首页 > 最新文献

Jurnal Kimia Valensi最新文献

英文 中文
Synthesis and Characterization of Ag/TiO2 Nanoparticles using Mirabilis jalapa Plant Extract 紫茉莉提取物制备银/TiO2纳米颗粒及表征
Pub Date : 2021-06-02 DOI: 10.15408/JKV.V1I1.18875
F. O. Purnomo, S. S. Ningrum, Sadwika Najmi Kautsari
Green synthesized nanomaterials have been widely developed because of their less toxicity, low energy process, environmentally friendly, effective, cheap, and pollution-free. Green synthesis of silver doped titanium dioxide nanoparticles (Ag/TiO2 NPs) was carried out using Mirabilis jalapa plant extract. The plant extract was used as a reducing agent. The functional groups, morphology, and crystalline structure of as-synthesized Ag/TiO2 NPs were investigated by FT-IR, FESEM, and XRD. Analysis by FESEM confirmed that the morphology of Ag/TiO2 NPs is spherical with an average size of ~ 400 nm. Crystallite size for the Ag/TiO2 NPs was calculated by the Scherrer formula dan the average size found to be in the range of 15.72 nm. The result of XRD analysis showing the fcc structure for metallic silver and TiO2 particles in the anatase and rutile phases.
绿色合成纳米材料以其低毒、低能耗、环保、高效、廉价、无污染等特点得到了广泛的发展。利用紫茉莉植物提取物进行了银掺杂二氧化钛纳米颗粒(Ag/TiO2-NPs)的绿色合成。植物提取物被用作还原剂。通过FT-IR、FESEM和XRD对合成的Ag/TiO2纳米颗粒的官能团、形貌和晶体结构进行了研究。FESEM分析证实,Ag/TiO2纳米颗粒的形态为球形,平均尺寸约为400nm。Ag/TiO2 NP的晶粒尺寸通过Scherrer公式计算,并且发现平均尺寸在15.72nm的范围内。XRD分析结果显示锐钛矿和金红石相中的金属银和TiO2颗粒的fcc结构。
{"title":"Synthesis and Characterization of Ag/TiO2 Nanoparticles using Mirabilis jalapa Plant Extract","authors":"F. O. Purnomo, S. S. Ningrum, Sadwika Najmi Kautsari","doi":"10.15408/JKV.V1I1.18875","DOIUrl":"https://doi.org/10.15408/JKV.V1I1.18875","url":null,"abstract":"Green synthesized nanomaterials have been widely developed because of their less toxicity, low energy process, environmentally friendly, effective, cheap, and pollution-free. Green synthesis of silver doped titanium dioxide nanoparticles (Ag/TiO2 NPs) was carried out using Mirabilis jalapa plant extract. The plant extract was used as a reducing agent. The functional groups, morphology, and crystalline structure of as-synthesized Ag/TiO2 NPs were investigated by FT-IR, FESEM, and XRD. Analysis by FESEM confirmed that the morphology of Ag/TiO2 NPs is spherical with an average size of ~ 400 nm. Crystallite size for the Ag/TiO2 NPs was calculated by the Scherrer formula dan the average size found to be in the range of 15.72 nm. The result of XRD analysis showing the fcc structure for metallic silver and TiO2 particles in the anatase and rutile phases.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43086581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanoporous Carbon Prepared with MOF-5 as a Template and Activated using KOH for Hydrogen Storage 以MOF-5为模板,KOH活化制备纳米多孔碳储氢
Pub Date : 2020-05-29 DOI: 10.15408/jkv.v6i1.13621
R. Ediati, T. Mulyati, A. Mukminin, D. O. Sulistiono, N. Khoiroh, H. Fansuri, D. Prasetyoko
A series of nanoporous carbon was prepared with MOF-5 as a template and furfuryl alcohol as an additional carbon source by carbonation at temperatures of 550 °C and 900 °C, respectively, with and without activation using KOH. XRD patterns of the obtained carbons before and after the activation process showed characteristic peaks at the same 2θ values, which corresponded to the XRD pattern of a ZnO. The Surface morphology of the MOF-5 templated carbon with a carbonation temperature of 550 °C was in the form of a cube. In contrast, the one carbonated at 900 °C had a cubic and circular morphology. The N2 adsorption-desorption isothermal showed that MOF-5 templated carbon had a larger specific surface area, pore diameter, and pore volume than those of the original MOF-5. Activation of the MOF-5 templated carbon using KOH resulted in a decrease in surface area and pore volume. All the materials were measured for their hydrogen adsorption at room temperature and atmospheric pressure using a gravimetric method.
以MOF-5为模板,糠醇为额外碳源,分别在550°C和900°C的温度下,使用KOH活化和不活化,制备了一系列纳米多孔碳。所获得的碳在活化过程前后的XRD图谱在相同的2θ值处显示出特征峰,这对应于ZnO的XRD图谱。碳酸化温度为550°C的MOF-5模板碳的表面形态为立方体。相比之下,在900°C下碳酸化的具有立方和圆形形态。N2吸附-解吸等温线表明,MOF-5模板碳比原始MOF-5具有更大的比表面积、孔径和孔体积。使用KOH活化MOF-5模板碳导致表面积和孔体积减小。使用重量法测量所有材料在室温和大气压下的氢吸附。
{"title":"Nanoporous Carbon Prepared with MOF-5 as a Template and Activated using KOH for Hydrogen Storage","authors":"R. Ediati, T. Mulyati, A. Mukminin, D. O. Sulistiono, N. Khoiroh, H. Fansuri, D. Prasetyoko","doi":"10.15408/jkv.v6i1.13621","DOIUrl":"https://doi.org/10.15408/jkv.v6i1.13621","url":null,"abstract":"A series of nanoporous carbon was prepared with MOF-5 as a template and furfuryl alcohol as an additional carbon source by carbonation at temperatures of 550 °C and 900 °C, respectively, with and without activation using KOH. XRD patterns of the obtained carbons before and after the activation process showed characteristic peaks at the same 2θ values, which corresponded to the XRD pattern of a ZnO. The Surface morphology of the MOF-5 templated carbon with a carbonation temperature of 550 °C was in the form of a cube. In contrast, the one carbonated at 900 °C had a cubic and circular morphology. The N2 adsorption-desorption isothermal showed that MOF-5 templated carbon had a larger specific surface area, pore diameter, and pore volume than those of the original MOF-5. Activation of the MOF-5 templated carbon using KOH resulted in a decrease in surface area and pore volume. All the materials were measured for their hydrogen adsorption at room temperature and atmospheric pressure using a gravimetric method.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43724675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Silver Recovery from X-ray Film Waste by Leaching and Precipitation Method Using Sodium Hydroxide and Sodium Sulfide 氢氧化钠和硫化钠浸出沉淀法从X射线胶片废料中回收银
Pub Date : 2020-05-29 DOI: 10.15408/jkv.v6i1.13648
S. Fatimah, W. Siswaningsih, Ali Kusrijadi, Fikri Aziz Shalahuddin
Silver recovery research from x-ray film waste by leaching and precipitation method using NaOH and Na2S aims to determine the optimum conditions in silver recovery. The parameters optimated in this study were the concentration of the precipitants, leaching temperature and the effect of the type of precipitants on the precipitated time. The results showed that the NaOH and Na2S precipitants were able to recover silver optimally at a concentration of 1.5 M. The optimum leaching temperature of the film with the Na2S precipitant to recover silver was at 25oC, whereas in the NaOH precipitant the film leaching temperature only affected the time of precipitation. Therefore, the formation of precipitate using Na2S is more efficient than NaOH, but the acquisition of silver is better to use NaOH than Na2S.
采用NaOH和Na2S浸出沉淀法从x射线胶片废料中回收银的研究旨在确定回收银的最佳条件。本研究中优化的参数是沉淀剂的浓度、浸出温度以及沉淀剂类型对沉淀时间的影响。结果表明,NaOH和Na2S沉淀剂在1.5M的浓度下能够最佳地回收银。Na2S沉淀对膜的最佳浸出温度为25℃,而在NaOH沉淀剂中,膜的浸出温度只影响沉淀时间。因此,使用Na2S形成沉淀物比使用NaOH更有效,但使用NaOH获得银比使用Na2S更好。
{"title":"Silver Recovery from X-ray Film Waste by Leaching and Precipitation Method Using Sodium Hydroxide and Sodium Sulfide","authors":"S. Fatimah, W. Siswaningsih, Ali Kusrijadi, Fikri Aziz Shalahuddin","doi":"10.15408/jkv.v6i1.13648","DOIUrl":"https://doi.org/10.15408/jkv.v6i1.13648","url":null,"abstract":"Silver recovery research from x-ray film waste by leaching and precipitation method using NaOH and Na2S aims to determine the optimum conditions in silver recovery. The parameters optimated in this study were the concentration of the precipitants, leaching temperature and the effect of the type of precipitants on the precipitated time. The results showed that the NaOH and Na2S precipitants were able to recover silver optimally at a concentration of 1.5 M. The optimum leaching temperature of the film with the Na2S precipitant to recover silver was at 25oC, whereas in the NaOH precipitant the film leaching temperature only affected the time of precipitation. Therefore, the formation of precipitate using Na2S is more efficient than NaOH, but the acquisition of silver is better to use NaOH than Na2S.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46303205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The Effect of Single Co-expression of The DnaK-DnaJ-GrpE and GroEL/ES Chaperones and Their Combination on Expression Intein-pretrombin-2 in Escherichia coli ER2566 dna - dnaj - grpe和GroEL/ES伴侣蛋白单共表达及其联合表达对大肠埃希菌ER2566中蛋白原-2表达的影响
Pub Date : 2020-05-29 DOI: 10.15408/jkv.v6i1.11333
I. Maksum, D Agus Yusuf Wildan, Khomaini Hasan, T. Subroto
The use of recombinant thrombin in the manufacture of fibrin glue allows diseases contamination to be avoided. However, the expression of recombinant protein in E. coli still has a disadvantage of the formation of inclusion bodies, so it needs to be minimized by co-expression of chaperones. Therefore, the aim of this study was to determine the effect of single DnaK-DnaJ-GrpE and GroEL/ES chaperone expression and their combination on the expression of intein-pretrombin-2Ti,pH on E. coli ER2566. The method started with isolation of pTWIN1-prethrombin-2Ti,pH and pG-KJE8 from E. coli TOP10F' and DH5α respectively, the co-transformation of the expression host E. coli ER2566 using pG-KJE8 and pTWIN1-prethrombin-2Ti,pHvectors, the chaperone co-expression was induced using L-Arabinosa before IPTG induction and cell culture growth was incubated at 22 oC. The expression products were characterized by using Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis. The results of the co-expression of chaperone showed that the number of soluble fraction was higher than the one without co-expression of chaperone. In addition, the co-expression of chaperone using pG-KJE8 in intein-prothrombin-2Ti,pH expression was sufficient using tetracycline as an inducer.
重组凝血酶在纤维蛋白胶生产中的应用可以避免疾病污染。然而,重组蛋白在大肠杆菌中的表达仍然存在形成包涵体的缺点,因此需要通过伴侣蛋白的共表达来将其最小化。因此,本研究的目的是确定单个dna - dnaj - grpe和GroEL/ES伴侣蛋白表达及其联合表达对大肠杆菌ER2566上interin -pretrombin- 2ti、pH表达的影响。方法首先分别从大肠杆菌TOP10F′和DH5α中分离pTWIN1-prethrombin-2Ti、pH和pG-KJE8,用pG-KJE8和pTWIN1-prethrombin-2Ti、pHvectors共转化表达宿主大肠杆菌ER2566,在IPTG诱导前用L-Arabinosa诱导伴侣共表达,22℃培养细胞生长。表达产物采用十二烷基硫酸钠-聚丙烯酰胺凝胶电泳(SDS-PAGE)分析。伴蛋白共表达的结果表明,可溶性分数的数量高于未伴蛋白共表达的分数。此外,以四环素为诱导剂,pG-KJE8在凝血素- 2ti、pH中共表达伴侣蛋白是足够的。
{"title":"The Effect of Single Co-expression of The DnaK-DnaJ-GrpE and GroEL/ES Chaperones and Their Combination on Expression Intein-pretrombin-2 in Escherichia coli ER2566","authors":"I. Maksum, D Agus Yusuf Wildan, Khomaini Hasan, T. Subroto","doi":"10.15408/jkv.v6i1.11333","DOIUrl":"https://doi.org/10.15408/jkv.v6i1.11333","url":null,"abstract":"The use of recombinant thrombin in the manufacture of fibrin glue allows diseases contamination to be avoided. However, the expression of recombinant protein in E. coli still has a disadvantage of the formation of inclusion bodies, so it needs to be minimized by co-expression of chaperones. Therefore, the aim of this study was to determine the effect of single DnaK-DnaJ-GrpE and GroEL/ES chaperone expression and their combination on the expression of intein-pretrombin-2Ti,pH on E. coli ER2566. The method started with isolation of pTWIN1-prethrombin-2Ti,pH and pG-KJE8 from E. coli TOP10F' and DH5α respectively, the co-transformation of the expression host E. coli ER2566 using pG-KJE8 and pTWIN1-prethrombin-2Ti,pHvectors, the chaperone co-expression was induced using L-Arabinosa before IPTG induction and cell culture growth was incubated at 22 oC. The expression products were characterized by using Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis. The results of the co-expression of chaperone showed that the number of soluble fraction was higher than the one without co-expression of chaperone. In addition, the co-expression of chaperone using pG-KJE8 in intein-prothrombin-2Ti,pH expression was sufficient using tetracycline as an inducer.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67112679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Degradasi Zat Warna Orange-F3R dan Violet-3B secara Sonolisis Frekuensi Rendah dengan Penambahan Katalis C-N-Codoped TiO2 橙色物质f3r和viole- 3b通过添加C-N-Codoped TiO2催化剂的低频率微氧降解
Pub Date : 2019-05-29 DOI: 10.15408/JKV.V5I1.7801
Reza Audina Putri, Safni Safni, Diana Vanda Wellia, Upita Septiani, N. Jamarun
Zat warna orange-F3R dan violet-3B merupakan zat warna organik sintetis turunan vat yang bersifat non-biodegradable. Degradasi kedua zat warna ini telah dilakukan secara sonolisis dengan penambahan katalis semikonduktor TiO2 anatase yang didoping karbon dan nitrogen. Proses sonolisis menggunakan iradiasi ultrasonik dengan frekuensi 35 kHz. Massa katalis optimum yang diperoleh untuk sonolisis zat warna orange-F3R adalah 9 mg dan 6 mg untuk violet-3B. Persen degradasi meningkat secara signifikan dengan penambahan katalis yaitu dari 8.3% menjadi 36.2% untuk sonolisis zat warna orange-F3R selama iradiasi 180 menit. Sedangkan, dengan waktu iradiasi yang sama persen degradasi dari zat warna violet meningkat dari 5.8% menjadi 34.2% setelah penambahan katalis. Kata kunci: C-N-codoped TiO2, sonolisis, ultrasonik, vat  Orange-F3R and violet-3B are non-biodegradable synthetic organic dyes. The degradation of these two dyestuffs has been done by sonolysis process with the addition of semiconductor TiO2 anatase catalyst which is doped by carbon and nitrogen atoms. The sonolysis process used ultrasonic irradiation with a frequency of 35 kHz. The optimum catalyst mass obtained for the orange-F3R dye sonolysis was 9 mg and 6 mg for violet-3B. The percentage of degradation increased significantly with the addition of the catalyst; it was from 8.3% to 36.2% for the orange-F3R dye during irradiation for 180 min. Meanwhile, by the same irradiation time, the degradation percentage of violet dye increased from 5.8% to 34.2% after the addition of the catalyst. Keywords: C-N-codoped TiO2, sonolysis, ultrasonic, vat-dye.
橙- f3r和viole- 3b是一种不可生物降解的vat衍生的有机合成颜色物质。这两种颜色物质的降解都是通过添加一种半导体替氨酸催化而进行的。超声波过程采用了35千赫频率的超声波辐射。橙色- f3r物质sonolisis获得的最佳催化剂质量为violet-3B提供了9毫克和6毫克。在180分钟的辐射中,催化剂的含量从8.3%增加到362%。另一方面,在催化剂添加后,紫罗兰色物质的降解时间从5.8%增加到34.2%。关键字:C-N-codoped TiO2, sonolisis,超声波,vat Orange-F3R和viole- 3b是非生物降解的有机合成dyes。这两种被告的退化是由半孔半孔碳和亚原子氮的加氧加法进行的。超音速处理由于35千赫的频率。最佳大众对橙f3r dye超音速运动员的迷恋是9毫克,3b毫克。退化的底色因加泰罗尼亚的加泰罗尼亚的加泰罗尼亚的加泰罗尼亚的加泰罗尼亚在180分钟的冲突中,人们的f3r减少了,同时,在同样动荡的时代,紫罗兰的衰落从5.8%增加到34.2%c - n调整TiO2,超声波,超声波,vdye。
{"title":"Degradasi Zat Warna Orange-F3R dan Violet-3B secara Sonolisis Frekuensi Rendah dengan Penambahan Katalis C-N-Codoped TiO2","authors":"Reza Audina Putri, Safni Safni, Diana Vanda Wellia, Upita Septiani, N. Jamarun","doi":"10.15408/JKV.V5I1.7801","DOIUrl":"https://doi.org/10.15408/JKV.V5I1.7801","url":null,"abstract":"Zat warna orange-F3R dan violet-3B merupakan zat warna organik sintetis turunan vat yang bersifat non-biodegradable. Degradasi kedua zat warna ini telah dilakukan secara sonolisis dengan penambahan katalis semikonduktor TiO2 anatase yang didoping karbon dan nitrogen. Proses sonolisis menggunakan iradiasi ultrasonik dengan frekuensi 35 kHz. Massa katalis optimum yang diperoleh untuk sonolisis zat warna orange-F3R adalah 9 mg dan 6 mg untuk violet-3B. Persen degradasi meningkat secara signifikan dengan penambahan katalis yaitu dari 8.3% menjadi 36.2% untuk sonolisis zat warna orange-F3R selama iradiasi 180 menit. Sedangkan, dengan waktu iradiasi yang sama persen degradasi dari zat warna violet meningkat dari 5.8% menjadi 34.2% setelah penambahan katalis. Kata kunci: C-N-codoped TiO2, sonolisis, ultrasonik, vat  Orange-F3R and violet-3B are non-biodegradable synthetic organic dyes. The degradation of these two dyestuffs has been done by sonolysis process with the addition of semiconductor TiO2 anatase catalyst which is doped by carbon and nitrogen atoms. The sonolysis process used ultrasonic irradiation with a frequency of 35 kHz. The optimum catalyst mass obtained for the orange-F3R dye sonolysis was 9 mg and 6 mg for violet-3B. The percentage of degradation increased significantly with the addition of the catalyst; it was from 8.3% to 36.2% for the orange-F3R dye during irradiation for 180 min. Meanwhile, by the same irradiation time, the degradation percentage of violet dye increased from 5.8% to 34.2% after the addition of the catalyst. Keywords: C-N-codoped TiO2, sonolysis, ultrasonic, vat-dye.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44349082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Profil Dan Sensitivitas Protein Alergen Ikan Tongkol (Thunnus albacares) Sebagai Reagen Skin Prick Test (SPT) 作为皮肤试剂的皮肤样本(例如),金枪鱼的过敏原蛋白(Thunnus cares)的配置和敏感性
Pub Date : 2019-05-29 DOI: 10.15408/JKV.V5I1.9678
Sri Yadial Chalid, Dahrul Syah, Puspo Edi Giriwono, Fransiska Rungkat, Zakaria Zakaria
Ikan tongkol merupakan salah satu produk laut penyebab alergi makanan. Gejala klinis reaksi alergi makanan adalah gatal, bentol, bengkak, sesak nafas, batuk, dan yang terparah adalah syok anafilaksis. Pengobatan dan pencegahan alergi makanan yang terbaik adalah menghindari konsumsi penyebab alergi. Menghindari konsumsi suatu makanan sebaiknya berdasarkan uji alergi seperti Skin Prick Test (SPT). SPT dilakukan menggunakan reagen SPT yang dicukitkan pada lapisan epidermis kulit lengan bagian volar. Reagen alergen pada penelitian ini merupakan protein ikan tongkol yang berasal dari laut Indonesia dan diekstrak dengan buffer fosfat, Profil ekstrak protein menggunakan elektroforesis dan immunoblotting untuk menentukan protein allergen. Sebanyak 15 pita protein terdeteksi pada ekstrak ikan tongkol yaitu protein dengan berat molekul antara 17 sampai 152 kDa. Potensi alergenik terdapat pada pita protein dengan berat molekul antara 12 sampai 50 kDa. Reagen SPT ikan tongkol mempunyai sensitivitas sebesar 81.8% dan spesifitas 100% sehingga disimpulkan bahwa reagen ekstrak ikan tongkol dapat digunakan sebagai reagen skin prick test Kata kunci: Alergi, protein, tongkol, gejala klinis, skin prick test   Tuna fish is one of the marine products that can cause allergic. Clinical symptoms of allergic are a bump, swelling, shortness of breath, coughing and anaphylactic shock is the worst symptom. The best medication and treatment is avoiding the consumption of food that could cause allergy. Avoiding consumption of food should be based on an allergy test such as a Skin Prick Test (SPT). SPT using reagent which is applied on the skin of the forearm between the wrist and elbow. The reagent for SPT is a protein solution of tuna which was extracted by phosphate buffer then protein profile was detected using electrophoresis. Immunoblotting was done to determine the molecular weight of the allergen protein. Fifteen protein bands were detected on tuna fish extract; the molecular weight of the protein was obtained between 17 to 152 kDa. Protein allergenic are molecules that have protein bands with a molecular weight between 12 and 50 kDa. Tuna fish extract solution for SPT had a sensitivity is 81.8%, and specificity is 100%, it was concluded that tuna fish reagent could be used as SPT reagent. Keywords: Allergen, protein, tuna fish, skin prick test.
舌鱼是引起食物过敏的海产品之一。对食物过敏反应的临床症状是瘙痒、皮疹、皮疹、喘息、咳嗽,出血是过敏性休克。最好的食物过敏治疗和预防是避免食用过敏物质。避免食用食物最好基于过敏测试,如皮肤刺痛测试(SPT)。使用附着在挥发性臂的表皮层上的SPT试剂进行SPT。对这项研究的过敏反应是一种来自印度尼西亚海域的棒鱼蛋白,用磷酸盐缓冲液提取,这是一种使用电铸和免疫印迹法测定过敏原蛋白的提取蛋白图谱。因此,在棒鱼提取物上检测到15条蛋白质带,这些蛋白质的分子量在17至152kDa之间。在分子量在12和50kDa之间的蛋白质带上发现了过敏潜力。cod的SPT试剂具有81.8%的灵敏度和100%的特异性,因此得出结论,cod提取物试剂可以用作皮肤点刺试验试剂过敏的临床症状有肿块、肿胀、呼吸急促、咳嗽和过敏性休克是最严重的症状。最好的药物和治疗方法是避免食用可能导致过敏的食物。避免食用食物应基于过敏测试,如皮肤刺痛测试(SPT)。使用试剂进行SPT,该试剂涂抹在手腕和肘部之间的前臂皮肤上。SPT的试剂是用磷酸盐缓冲液提取的金枪鱼蛋白质溶液,然后用电泳检测蛋白质图谱。进行免疫印迹以确定过敏原蛋白的分子量。在金枪鱼提取物中检测到15条蛋白质带;所获得的蛋白质的分子量在17至152kDa之间。蛋白质致敏性是具有分子量在12和50kDa之间的蛋白质带的分子。金枪鱼提取物溶液对SPT的敏感性为81.8%,特异性为100%,可以作为SPT试剂。关键词:过敏原,蛋白质,金枪鱼,皮肤点刺试验。
{"title":"Profil Dan Sensitivitas Protein Alergen Ikan Tongkol (Thunnus albacares) Sebagai Reagen Skin Prick Test (SPT)","authors":"Sri Yadial Chalid, Dahrul Syah, Puspo Edi Giriwono, Fransiska Rungkat, Zakaria Zakaria","doi":"10.15408/JKV.V5I1.9678","DOIUrl":"https://doi.org/10.15408/JKV.V5I1.9678","url":null,"abstract":"Ikan tongkol merupakan salah satu produk laut penyebab alergi makanan. Gejala klinis reaksi alergi makanan adalah gatal, bentol, bengkak, sesak nafas, batuk, dan yang terparah adalah syok anafilaksis. Pengobatan dan pencegahan alergi makanan yang terbaik adalah menghindari konsumsi penyebab alergi. Menghindari konsumsi suatu makanan sebaiknya berdasarkan uji alergi seperti Skin Prick Test (SPT). SPT dilakukan menggunakan reagen SPT yang dicukitkan pada lapisan epidermis kulit lengan bagian volar. Reagen alergen pada penelitian ini merupakan protein ikan tongkol yang berasal dari laut Indonesia dan diekstrak dengan buffer fosfat, Profil ekstrak protein menggunakan elektroforesis dan immunoblotting untuk menentukan protein allergen. Sebanyak 15 pita protein terdeteksi pada ekstrak ikan tongkol yaitu protein dengan berat molekul antara 17 sampai 152 kDa. Potensi alergenik terdapat pada pita protein dengan berat molekul antara 12 sampai 50 kDa. Reagen SPT ikan tongkol mempunyai sensitivitas sebesar 81.8% dan spesifitas 100% sehingga disimpulkan bahwa reagen ekstrak ikan tongkol dapat digunakan sebagai reagen skin prick test Kata kunci: Alergi, protein, tongkol, gejala klinis, skin prick test   Tuna fish is one of the marine products that can cause allergic. Clinical symptoms of allergic are a bump, swelling, shortness of breath, coughing and anaphylactic shock is the worst symptom. The best medication and treatment is avoiding the consumption of food that could cause allergy. Avoiding consumption of food should be based on an allergy test such as a Skin Prick Test (SPT). SPT using reagent which is applied on the skin of the forearm between the wrist and elbow. The reagent for SPT is a protein solution of tuna which was extracted by phosphate buffer then protein profile was detected using electrophoresis. Immunoblotting was done to determine the molecular weight of the allergen protein. Fifteen protein bands were detected on tuna fish extract; the molecular weight of the protein was obtained between 17 to 152 kDa. Protein allergenic are molecules that have protein bands with a molecular weight between 12 and 50 kDa. Tuna fish extract solution for SPT had a sensitivity is 81.8%, and specificity is 100%, it was concluded that tuna fish reagent could be used as SPT reagent. Keywords: Allergen, protein, tuna fish, skin prick test.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45975920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Peran Capping Agent terhadap Morfologi SrTiO3 Bulat Berongga yang Terbentuk dari Susunan Nanokubus melalui Metode Solvotermal 包覆剂对溶剂法纳米晶排列SrTiO3长圆形貌的影响
Pub Date : 2019-05-29 DOI: 10.15408/JKV.V5I1.9972
Y. Putri, Merida Saputri, Rahmadhini Anwar, N. Andriani, Rathesa Najeela, Thalabul Ilmi, Diana Vanda Wellia
SrTiO3 bulat berongga yang tersusun dari nano kubus telah disintesis dengan penambahan cetyltrimethylammonium bromide (CTAB) sebagai capping agent untuk mengontrol morfologi partikel. Kondisi sintesis pada suhu 220 °C selama 48 jam dengan perbandingan mol Sr:Ti = 1:1.25 dan perbandingan material awal dengan CTAB adalah 1:0.5 menghasilkan partikel dengan kristalinitas yang tinggi pada puncak spesifik   2θ = 32.41o bidang 110 yang merujuk pada struktur perovskit kubus.  Penghalusan struktur kristal dengan metoda Rietveld menunjukkan bahwa struktur kristal hasil pengukuran memiliki kecocokan yang tinggi dengan hasil perhitungan dengan nilai Rwp adalah 12.07. Interaksi antara CTAB dan permukaan SrTiO3 terlacak pada spektrum FTIR dengan angka gelombang 1100-1250 cm-1 membuktikan adanya vibrasi ulur C-N yang melemah akibat proses capping. Foto SEM menunjukkan bahwa partikel yang terbentuk umumnya memiliki bentuk bulat berongga, sementara foto TEM memperlihatkan partikel berongga berukuran mikro dibentuk dari susunan nanokubus berukuran rata-rata 20 nm. Kata kunci: Capping agent, partikel berongga, nanokubus, solvotermal, perovskite The synthesis of SrTiO3 hollow sphere built as assembly of nanocubes using cetyltrimethylammonium bromide (CTAB) as capping agent was aimed to control the size and shape of the particles. The condition of the synthesis at 220 °C for 48 hours with a molar ratio of Sr:Ti was 1:1.25 and starting material:CTAB was 1:0.5, have resulted the particles with a high crystallinity with specific XRD peaks at 2θ; 32.41 (110), which was in agreement with the cube-perovskite structure. The refinement of the crystal structure by the Rietveld method showed that the crystal structure of the measurement results has a high match with the result of the calculation with Rwp value was 12.07. The interaction between CTAB and the surface of SrTiO3 traced in the FTIR spectrum with wave number 1100-1250 cm-1 indicated the stretching vibration of C-N was weakened due to the capping process. SEM images showed the particles with hollow microsphere, while TEM images revealed that the hollow particles were assembled by nanocubes with an average size of 20 nm. Keywords: Capping agent, hollow, nanocube, solvothermal, perovskite.
由纳米立方体组成的中空SrTiO3被合成,加入溴铵作为抑制粒子形态的代理。在220°C的温度下合成条件48小时相比之下mol Sr: Ti = 1:1 . 25和材料比较早CTAB是1:0 . 5的粒子产生很高的kristalinitas山顶2θ= 32。具体41o 110指perovskit立方体结构的领域。晶体结构的改进与Rietveld方法表明,测量结果的晶体结构与Rwp值的计算结果高匹配为12.07。FTIR波段与SrTiO3表面的相互作用,FTIR波段的波形为1100s -1250 cm-1,这证明了在capping过程中受到削弱的C-N振动的存在。SEM的照片显示,形成的粒子通常有中空的球形,而TEM则显示中空的微粒子是由平均20 nm的纳米立方体组成的。关键字:吸收剂、空心粒子、纳米立方体、溶剂、水晶体、水晶体……这些中空球体的合成器由溴溴铵构成。在220°C for雾》一个综合体。48小时with a ratio of磨牙Sr: Ti是1:1 . 25和启动材料:CTAB是1:0 . 5,有resulted particles with a high crystallinity with非常具体的XRD八次at 2θ;32.41(110),这是对cube- pervskite结构的同意。Rietveld的证据表明,计算结果的晶体结果与Rwp值的计算结果是12。07。CTAB和srti3在FTIR -1250 cmSEM images用空心的微球体呈现这些颗粒,而TEM则显示,这些空心颗粒被20个nm的平均大小的纳米颗粒覆盖。Capping剂,空心,纳米立方体,solvomal, pervskite。
{"title":"Peran Capping Agent terhadap Morfologi SrTiO3 Bulat Berongga yang Terbentuk dari Susunan Nanokubus melalui Metode Solvotermal","authors":"Y. Putri, Merida Saputri, Rahmadhini Anwar, N. Andriani, Rathesa Najeela, Thalabul Ilmi, Diana Vanda Wellia","doi":"10.15408/JKV.V5I1.9972","DOIUrl":"https://doi.org/10.15408/JKV.V5I1.9972","url":null,"abstract":"SrTiO3 bulat berongga yang tersusun dari nano kubus telah disintesis dengan penambahan cetyltrimethylammonium bromide (CTAB) sebagai capping agent untuk mengontrol morfologi partikel. Kondisi sintesis pada suhu 220 °C selama 48 jam dengan perbandingan mol Sr:Ti = 1:1.25 dan perbandingan material awal dengan CTAB adalah 1:0.5 menghasilkan partikel dengan kristalinitas yang tinggi pada puncak spesifik   2θ = 32.41o bidang 110 yang merujuk pada struktur perovskit kubus.  Penghalusan struktur kristal dengan metoda Rietveld menunjukkan bahwa struktur kristal hasil pengukuran memiliki kecocokan yang tinggi dengan hasil perhitungan dengan nilai Rwp adalah 12.07. Interaksi antara CTAB dan permukaan SrTiO3 terlacak pada spektrum FTIR dengan angka gelombang 1100-1250 cm-1 membuktikan adanya vibrasi ulur C-N yang melemah akibat proses capping. Foto SEM menunjukkan bahwa partikel yang terbentuk umumnya memiliki bentuk bulat berongga, sementara foto TEM memperlihatkan partikel berongga berukuran mikro dibentuk dari susunan nanokubus berukuran rata-rata 20 nm. Kata kunci: Capping agent, partikel berongga, nanokubus, solvotermal, perovskite The synthesis of SrTiO3 hollow sphere built as assembly of nanocubes using cetyltrimethylammonium bromide (CTAB) as capping agent was aimed to control the size and shape of the particles. The condition of the synthesis at 220 °C for 48 hours with a molar ratio of Sr:Ti was 1:1.25 and starting material:CTAB was 1:0.5, have resulted the particles with a high crystallinity with specific XRD peaks at 2θ; 32.41 (110), which was in agreement with the cube-perovskite structure. The refinement of the crystal structure by the Rietveld method showed that the crystal structure of the measurement results has a high match with the result of the calculation with Rwp value was 12.07. The interaction between CTAB and the surface of SrTiO3 traced in the FTIR spectrum with wave number 1100-1250 cm-1 indicated the stretching vibration of C-N was weakened due to the capping process. SEM images showed the particles with hollow microsphere, while TEM images revealed that the hollow particles were assembled by nanocubes with an average size of 20 nm. Keywords: Capping agent, hollow, nanocube, solvothermal, perovskite.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48916379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fitoremediasi Logam Seng (Zn) Menggunakan Hydrilla sp. Pada Limbah Industri Kertas 利用Hydrilla sp.在造纸工业废物中进行Seng金属配合物(Zn)
Pub Date : 2019-05-27 DOI: 10.15408/JKV.V5I1.8814
Cory Novi, Sartika Sartika, Afifah Nur Shobah
Logam seng pada konsentrasi tertentu dapat terakumulasi di dalam air, biota dan sedimen pada perairan yang dapat menimbulkan efek toksik terhadap organisme sehingga untuk mengatasi permasalahan tersebut telah dikembangkan teknologi alternatif yang dikenal dengan fitoremediasi. Tujuan dari penelitian ini adalah memanfaatkan Hydrilla sp. sebagai agen fitoremediasi untuk menurunkan konsentrasi logam seng (Zn) pada limbah industri kertas. Tahap penelitian meliputi uji karakteristik awal air limbah dan Range Finding Test (RFT), penyiapan 75 g Hydrilla sp. dan aklimatisasi Hydrilla sp. selama 5 hari. Hydrilla sp. ditumbuhkan  pada reaktor selama 18 hari dalam 5 liter limbah industri kertas dengan konsentrasi 100% dan 5 liter akuades sebagai kontrol (0%). Variabel pengamatan meliputi pengukuran nilai pH, suhu dan identifikasi perubahan warna daun Hydrilla sp. Limbah hasil fitoremediasi pada waktu pemaparan 3, 6, 9, 12, 15, dan 18 hari dilakukan analisis logam seng (Zn) dengan ICP-OES. Berdasarkan hasil analisis menunjukkan bahwa pada hari ke-0 sampai hari ke-12 persentase logam seng yang hilang sebesar 50% dan pada hari ke-18 mengalami penurunan persentase sebesar 25%. Kata kunci : Fitoremediasi, Hydrilla sp., limbah industri kertas, logam seng. Zinc metal at certain concentrations can accumulate in water, biota, sedimentary in waters which can cause toxic effects on organisms. So as to overcome these problems alternative technologies have been developed known as phytoremediation. The purpose of this research is to utilize Hydrilla sp. as a phytoremediation agent to reduce zinc metal concentrations in paper industry wastes. The research phase included preliminary research that is initial characteristic of wastewater and Range Finding Test (RFT), preparation of 75 g of Hydrilla sp. and Hydrilla sp. acclimatization for 5 days, then Hydrilla sp. grown on reactor for 18 days in 5 liters of paper industry waste with 100% concentration and 5 liters of akuadest as control (0%). Observation variables include measuring pH values, temperature and identify discoloration of Hydrilla sp. leaves, then the phytoremediation waste at exposure time of  3, 6, 9, 12, 15 and 18 days was analyzed zinc (Zn) with ICP-OES. Based on the analysis results show that on days 0 to day 12 the percent amount lost by 50% and on the 18th day the amount of zinc metal lost decreased by 25%. Keywords : Phytoremediation, Hydrilla sp., paper industry waste, zinc metals.
特定浓度的无声金属会在水中、生物群和水中沉积物中积累,对生物体产生毒性影响,因此已经开发出了被称为植物修复的替代技术来解决这些问题。本研究的目的是利用Hydrilla sp.作为植物修复剂来降低废纸工业中固体金属(Zn)的浓度。研究水平包括废水特性的初步测试和测距测试(RFT),75克海狗的制备和5天的海狗驯化。Hydrilla sp.在反应器中在5升废纸工业中以100%和5升水浓度作为对照(0%)生长18天。观察变量包括pH值的测量、温度和Hydrilla sp.颜色变化的识别。显示3、6、9、12、15和18天的流动植物修复结果用ICP-OES进行了固体金属分析(Zn)。根据分析结果,在第0天至第12天,50%的金属损失,在第18天,25%的金属损失。关键词:Fitoremediation,Hydrilla sp.,废纸工业,seng metal。[UNK]一定浓度的锌金属会在水中、生物群中积累,并沉积在水中,这会对生物体产生毒性影响。为了克服这些问题,人们开发了被称为植物修复的替代技术。本研究的目的是利用Hydrilla sp.作为一种植物修复剂来降低造纸工业废物中的锌金属浓度。研究阶段包括初步研究,即废水的初始特性和测距试验(RFT),制备75g的Hydrilla sp.和适应5天的Hydrila sp.,然后在反应器上在5升100%浓度的造纸工业废物和5升作为对照(0%)的akuadest中生长18天。观察变量包括测量pH值、温度和识别Hydrilla sp.叶片的变色,然后用ICP-OES分析暴露时间为3、6、9、12、15和18天的植物修复废物的锌(Zn)。基于分析结果显示,在第0天至第12天,损失的百分比量减少了50%,而在第18天,锌金属的损失量减少了25%。关键词:植物修复,水螅属,造纸工业废弃物,锌金属。
{"title":"Fitoremediasi Logam Seng (Zn) Menggunakan Hydrilla sp. Pada Limbah Industri Kertas","authors":"Cory Novi, Sartika Sartika, Afifah Nur Shobah","doi":"10.15408/JKV.V5I1.8814","DOIUrl":"https://doi.org/10.15408/JKV.V5I1.8814","url":null,"abstract":"Logam seng pada konsentrasi tertentu dapat terakumulasi di dalam air, biota dan sedimen pada perairan yang dapat menimbulkan efek toksik terhadap organisme sehingga untuk mengatasi permasalahan tersebut telah dikembangkan teknologi alternatif yang dikenal dengan fitoremediasi. Tujuan dari penelitian ini adalah memanfaatkan Hydrilla sp. sebagai agen fitoremediasi untuk menurunkan konsentrasi logam seng (Zn) pada limbah industri kertas. Tahap penelitian meliputi uji karakteristik awal air limbah dan Range Finding Test (RFT), penyiapan 75 g Hydrilla sp. dan aklimatisasi Hydrilla sp. selama 5 hari. Hydrilla sp. ditumbuhkan  pada reaktor selama 18 hari dalam 5 liter limbah industri kertas dengan konsentrasi 100% dan 5 liter akuades sebagai kontrol (0%). Variabel pengamatan meliputi pengukuran nilai pH, suhu dan identifikasi perubahan warna daun Hydrilla sp. Limbah hasil fitoremediasi pada waktu pemaparan 3, 6, 9, 12, 15, dan 18 hari dilakukan analisis logam seng (Zn) dengan ICP-OES. Berdasarkan hasil analisis menunjukkan bahwa pada hari ke-0 sampai hari ke-12 persentase logam seng yang hilang sebesar 50% dan pada hari ke-18 mengalami penurunan persentase sebesar 25%. Kata kunci : Fitoremediasi, Hydrilla sp., limbah industri kertas, logam seng. Zinc metal at certain concentrations can accumulate in water, biota, sedimentary in waters which can cause toxic effects on organisms. So as to overcome these problems alternative technologies have been developed known as phytoremediation. The purpose of this research is to utilize Hydrilla sp. as a phytoremediation agent to reduce zinc metal concentrations in paper industry wastes. The research phase included preliminary research that is initial characteristic of wastewater and Range Finding Test (RFT), preparation of 75 g of Hydrilla sp. and Hydrilla sp. acclimatization for 5 days, then Hydrilla sp. grown on reactor for 18 days in 5 liters of paper industry waste with 100% concentration and 5 liters of akuadest as control (0%). Observation variables include measuring pH values, temperature and identify discoloration of Hydrilla sp. leaves, then the phytoremediation waste at exposure time of  3, 6, 9, 12, 15 and 18 days was analyzed zinc (Zn) with ICP-OES. Based on the analysis results show that on days 0 to day 12 the percent amount lost by 50% and on the 18th day the amount of zinc metal lost decreased by 25%. Keywords : Phytoremediation, Hydrilla sp., paper industry waste, zinc metals.","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49311155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Aplikasi Urease dari Biji Kacang Tolo (Vigna unguiculata ssp unguiculata L.) untuk Biosensor Urea
Pub Date : 2019-05-27 DOI: 10.15408/JKV.V5I1.8776
Zusfahair Zusfahair, D. Ningsih, Amin Fatoni, Vika Aprilia Puspitarini
Penggunaan urease dalam analisis urea yang digabungkan dengan suatu transduser disebut biosensor urea.Tujuan penelitian adalah menentukan kadar urea dengan metode biosensor urea berbasis urease biji kacang tolo yang diamobilisasi pada matrik alginat dan dideteksi secara kolorimetri menggunakan indikator bromtimol biru. Penelitian dimulai dengan isolasi urease dari biji kacang tolo (Vigna unguiculata ssp unguiculata L.), kemudian diamobilisasi menggunakan metode penjebakan dengan natrium alginat, setelah mencampur larutan urease dengan natrium alginat, diteteskan dalam larutan CaCl2 sampai terbentuk urease alginat. Beads urease alginat direaksikan dengan urea menghasilkan ion amonium, selanjutnya ditambahkan indikator bromtimol biru dan perubahan warnanya diukur menggunakan spektrofotometer. Kinerja analitis biosensor urea ditentukan melalui penentuan waktu reaksi enzimatis, keberulangan analisis, keberulangan pembuatan dan pengujian senyawa penganggu dengan konsentrasi urea 4mM, serta penentuan linearitas, batas deteksi, dan batas kuantifikasi dengan konsentrasi urea 0.05; 1; 3; 7; dan 15 mM. Hasil penelitian menunjukkan beads urease alginat bisa digunakan berulang sampai 8 kali. Kinerja analitis beads urease alginat menghasilkan respon yang linier pada rentang 0.05-15 mM dengan koefisien korelasi sebesar 0.9981, batas deteksi sebesar 0.8 mM dan batas kuantifikasi sebesar 2.67 mM. Keberulangan pembuatan beads urease alginat menghasilkan nilai koefisien variasi sebesar 6%. Analisis tidak terganggu dengan keberadaan asam askobat 0.05 mM dan asam urat 0.4 mM. Kata kunci: Amobilisasi urease, beads alginat, biosensor, biji kacang tolo, spektrofotometri. The use of urease in the urea analysis which combined with a transducer is called urea biosensor. Research aimed to determine urea level using urea biosensor method based on urease from black-eyed pea that immobilized on alginate matrix and detected by colorimetric using bromothymol blue indicator. The research began with urease isolation from black-eyed pea (Vigna unguiculata ssp unguiculata L.), and then it immobilized utilizing the trapping method with sodium alginate, after mixing urease solution with sodium alginate, it is dripped in CaCl2 solution until alginate urease beads formed. Alginate urease beads reacted with urea to produce ammonium ion, then it’s added with indicator bromothymol blue, and the color changes were measured using a spectrophotometer. ­The analytical performance of urea biosensor is determined by enzymatic reaction time, repeated analysis, repeatability of fabrication and calibration of disturbing compound with concentration of urea 4 mM, also linearity, limit of detection and limit of quantification with concentration of urea 0.05, 1, 3, 7 and 15 mM. The results showed that alginate urease beads could repeatedly be used until eight times. The analytical performance of alginate urease beads including a linear response in the range of 0.05 mM-15 mM with the correlation coeffi
尿素分析与换能器结合的尿素分析的使用称为尿素生物传感器。研究的目的是用蓝色溴酸盐指示器确定尿素的生物传感器水平。研究开始时,将尿素从tolo种子(Vigna ungculata ssp unguilata L)中分离出来,然后用alginat钠的诱捕方法进行体外受精,在尿素溶液与alginat钠混合后,在蠕虫溶液中进行筛查,直到尿素形成alginat。白垩纪尿素是由尿素生成的,然后加入蓝色溴化指示器,用光谱仪测量颜色的变化。urea传感器生物传感器分析性能是由酶反应、重度分析、不宁制造和测试4毫米尿素浓度的镇痛化合物、线性、检测极限和定量限定与尿素浓度0.05;1;3;7;15毫米的研究结果表明,白喉白藜芦醇可重复使用8次。alginat的分析工作在0.05-15毫米范围内产生线性响应,相关系数为0.9981毫米,检测限额为0.8毫米,计算限额为2.67毫米。分析不因盐酸0.05毫米和尿酸0.4毫米而受到影响。尿素分析中使用的尿素分析的好处是一种叫做尿素生物传感器的传感器。研究已经确定了用黑眼豆蔻上的生物传感器方法来确定的尿素水平。这项研究始于黑眼睛豌豆的尿素隔离,然后它固定了用alginate钠和钠溶液混合的溶液,然后植入蠕虫溶液,直到尿素被排出。聚糖尿素被聚糖所吸收,然后加上溴化蓝色,颜色变化被用光谱仪放大。} -尿素的分析演出biosensor is intended enzymatic fabrication的反应时间,重复分析,repeatability》和第四calibration化合物用尿素4毫米的双臀,还linearity limit of detection and quantification的限额用尿素的双臀0。05,1、3、7和15毫米。The results那里那个alginate urease珠子会重复过去,直到八时报。alginate之分析演出urease用品在内的a线性响应《太阳城》0。05 mM-15毫米和0。9981之相关coefficient, 0。8毫米的detection限额and quantification限额of repeatability》2 . 67毫米fabrication alginate urease珠子coefficient of variation价值》由6%。呈现0.05毫米外皮acid和0.4毫米uric acid。分析没有干扰。Keywords:尿道阻滞剂,头,生物传感器,黑眼睛豆豆,光谱。
{"title":"Aplikasi Urease dari Biji Kacang Tolo (Vigna unguiculata ssp unguiculata L.) untuk Biosensor Urea","authors":"Zusfahair Zusfahair, D. Ningsih, Amin Fatoni, Vika Aprilia Puspitarini","doi":"10.15408/JKV.V5I1.8776","DOIUrl":"https://doi.org/10.15408/JKV.V5I1.8776","url":null,"abstract":"Penggunaan urease dalam analisis urea yang digabungkan dengan suatu transduser disebut biosensor urea.Tujuan penelitian adalah menentukan kadar urea dengan metode biosensor urea berbasis urease biji kacang tolo yang diamobilisasi pada matrik alginat dan dideteksi secara kolorimetri menggunakan indikator bromtimol biru. Penelitian dimulai dengan isolasi urease dari biji kacang tolo (Vigna unguiculata ssp unguiculata L.), kemudian diamobilisasi menggunakan metode penjebakan dengan natrium alginat, setelah mencampur larutan urease dengan natrium alginat, diteteskan dalam larutan CaCl2 sampai terbentuk urease alginat. Beads urease alginat direaksikan dengan urea menghasilkan ion amonium, selanjutnya ditambahkan indikator bromtimol biru dan perubahan warnanya diukur menggunakan spektrofotometer. Kinerja analitis biosensor urea ditentukan melalui penentuan waktu reaksi enzimatis, keberulangan analisis, keberulangan pembuatan dan pengujian senyawa penganggu dengan konsentrasi urea 4mM, serta penentuan linearitas, batas deteksi, dan batas kuantifikasi dengan konsentrasi urea 0.05; 1; 3; 7; dan 15 mM. Hasil penelitian menunjukkan beads urease alginat bisa digunakan berulang sampai 8 kali. Kinerja analitis beads urease alginat menghasilkan respon yang linier pada rentang 0.05-15 mM dengan koefisien korelasi sebesar 0.9981, batas deteksi sebesar 0.8 mM dan batas kuantifikasi sebesar 2.67 mM. Keberulangan pembuatan beads urease alginat menghasilkan nilai koefisien variasi sebesar 6%. Analisis tidak terganggu dengan keberadaan asam askobat 0.05 mM dan asam urat 0.4 mM. Kata kunci: Amobilisasi urease, beads alginat, biosensor, biji kacang tolo, spektrofotometri. The use of urease in the urea analysis which combined with a transducer is called urea biosensor. Research aimed to determine urea level using urea biosensor method based on urease from black-eyed pea that immobilized on alginate matrix and detected by colorimetric using bromothymol blue indicator. The research began with urease isolation from black-eyed pea (Vigna unguiculata ssp unguiculata L.), and then it immobilized utilizing the trapping method with sodium alginate, after mixing urease solution with sodium alginate, it is dripped in CaCl2 solution until alginate urease beads formed. Alginate urease beads reacted with urea to produce ammonium ion, then it’s added with indicator bromothymol blue, and the color changes were measured using a spectrophotometer. ­The analytical performance of urea biosensor is determined by enzymatic reaction time, repeated analysis, repeatability of fabrication and calibration of disturbing compound with concentration of urea 4 mM, also linearity, limit of detection and limit of quantification with concentration of urea 0.05, 1, 3, 7 and 15 mM. The results showed that alginate urease beads could repeatedly be used until eight times. The analytical performance of alginate urease beads including a linear response in the range of 0.05 mM-15 mM with the correlation coeffi","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42634066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Upgrading Crude Biodiesel dari Minyak Goreng Bekas menggunakan Katalis H-Zeolit
Pub Date : 2019-05-27 DOI: 10.15408/JKV.V5I1.10493
Isalmi Aziz, Muhammad Akbar Tafdila, Siti Nurbayti, Lisa Adhani, W. Permata
Crude biodiesel hasil transesterifikasi minyak goreng bekas dapat ditingkatkan kualitasnya melalui proses catalytic cracking menggunakan zeolit alam. Penelitian ini bertujuan untuk menentukan kondisi optimum proses catalytic cracking dan sifat fisika dan kimia biofuel yang dihasilkan. Reaksi dijalankan dalam reaktor dengan memvariasikan waktu (1, 2 dan 3 jam), konsentrasi katalis (3, 5 dan 7 %), ukuran partikel katalis (180, 250 dan 630μm) dan suhu reaksi (325, 350 dan 375°C). Kondisi optimum proses catalytic cracking crude biodiesel didapatkan pada : waktu  3 jam, konsentrasi katalis 7%, ukuran partikel katalis 180 μm dan suhu reaksi 375°C. Biofuel yang dihasilkan mengandung 6,26% fraksi bensin(C5-C11); 17,6% kerosin (C12-C15), 47,73% biodiesel (C16-C20) dan asam lemak 28,4%. Analisis sifat fisik menunjukan densitas 0,9631g/mL, titik tuang 12°C, titik nyala  49°C dan angka oktan 72,6. Kata kunci: catalytic cracking, crude biodiesel, angka oktan, biofuel. Crude biodiesel from transesterification of used cooking oil can be improved in quality through catalytic cracking using natural zeolite. This study aims to determine the optimum conditions for catalytic cracking and the physical and chemical properties of biofuels produced. The reaction was carried out in the reactor by varying the time (1, 2 and 3 hours), catalyst concentration (3, 5 and 7%), catalyst particle size (180, 250 and 630 μm) and reaction temperature (325, 350 and 375°C) . The optimum conditions for the catalytic cracking crude biodiesel process were obtained at: 3 hours, 7% catalyst concentration, catalyst particle size 180 μm and reaction temperature 375 ° C. The resulting biofuel contains 6.26% gasoline fraction (C5-C11); 17.6% kerosene (C12-C15), 47.73% biodiesel (C16-C20) and fatty acids 28.4%. Physical properties analysis showed density of 0.9631g/mL, pour point 12°C, flash point 49°C and octane number 72.6. Keywords: Catalytic cracking, crude biodiesel, octane number, biofuel. 
用天然zeolit进行加泰罗夫斯基生物柴油转化。本研究旨在确定催化过程的最佳状态,以及产生的生物燃料的物理和化学性质。反应堆的运行调节反应时间(1,2和3小时)、催化剂的浓度(3、5和7 %)、催化剂颗粒的大小(180 630,250μm)和反应温度(325年,350 375°C)。最佳条件上得到catalytic开裂原油生物柴油的过程:3小时,7%催化剂的浓度,反应温度180μm催化剂颗粒的大小和375°C。生产的生物燃料含有6.26%的汽油成分(C5-C11);17.6%是煤油(C12-C15), 47.73%的生物柴油(C16-C20)和284%的脂肪酸。物理性质分析显示测量0,9631g密度/ mL,倒点12°C,燃点49°C和辛烷72.6数字。关键词:catalytic cracking, crude biodiesel,辛烷数,生物燃料。从过去使用的烹饪油的外壳中提取的生物柴油可以通过catalytic通过天然zeolite实现质量。这项研究旨在确定对生物燃料生产的最佳冲击和物理和化学性质的特性。反应堆中的反应是carried out by varying时代杂志》(1、2和3小时),加泰罗尼亚双臀(3、5和7%),加泰罗尼亚粒子大小(180,250 630μm)和反应(325年,350和375°C)的温度。《最佳条件为catalytic开裂原油生物柴油的过程是获得at: 3小时,7%加泰罗尼亚双臀,加泰罗尼亚粒子大小180μm和生物燃料反应375°C的温度。The resulting contains 6 . 26%汽油fraction (C5-C11);17.6%煤油(C12-C15), 47.73%生物柴油(C16-C20)和脂肪acids 28.4%。身体性能分析那里0。9631g / mL的密度,pour point 12°C, flash point 49°C和octane 72当家6。catawords: Catalytic cracking, crude biodiesel, octane number, biofuel。
{"title":"Upgrading Crude Biodiesel dari Minyak Goreng Bekas menggunakan Katalis H-Zeolit","authors":"Isalmi Aziz, Muhammad Akbar Tafdila, Siti Nurbayti, Lisa Adhani, W. Permata","doi":"10.15408/JKV.V5I1.10493","DOIUrl":"https://doi.org/10.15408/JKV.V5I1.10493","url":null,"abstract":"Crude biodiesel hasil transesterifikasi minyak goreng bekas dapat ditingkatkan kualitasnya melalui proses catalytic cracking menggunakan zeolit alam. Penelitian ini bertujuan untuk menentukan kondisi optimum proses catalytic cracking dan sifat fisika dan kimia biofuel yang dihasilkan. Reaksi dijalankan dalam reaktor dengan memvariasikan waktu (1, 2 dan 3 jam), konsentrasi katalis (3, 5 dan 7 %), ukuran partikel katalis (180, 250 dan 630μm) dan suhu reaksi (325, 350 dan 375°C). Kondisi optimum proses catalytic cracking crude biodiesel didapatkan pada : waktu  3 jam, konsentrasi katalis 7%, ukuran partikel katalis 180 μm dan suhu reaksi 375°C. Biofuel yang dihasilkan mengandung 6,26% fraksi bensin(C5-C11); 17,6% kerosin (C12-C15), 47,73% biodiesel (C16-C20) dan asam lemak 28,4%. Analisis sifat fisik menunjukan densitas 0,9631g/mL, titik tuang 12°C, titik nyala  49°C dan angka oktan 72,6. Kata kunci: catalytic cracking, crude biodiesel, angka oktan, biofuel. Crude biodiesel from transesterification of used cooking oil can be improved in quality through catalytic cracking using natural zeolite. This study aims to determine the optimum conditions for catalytic cracking and the physical and chemical properties of biofuels produced. The reaction was carried out in the reactor by varying the time (1, 2 and 3 hours), catalyst concentration (3, 5 and 7%), catalyst particle size (180, 250 and 630 μm) and reaction temperature (325, 350 and 375°C) . The optimum conditions for the catalytic cracking crude biodiesel process were obtained at: 3 hours, 7% catalyst concentration, catalyst particle size 180 μm and reaction temperature 375 ° C. The resulting biofuel contains 6.26% gasoline fraction (C5-C11); 17.6% kerosene (C12-C15), 47.73% biodiesel (C16-C20) and fatty acids 28.4%. Physical properties analysis showed density of 0.9631g/mL, pour point 12°C, flash point 49°C and octane number 72.6. Keywords: Catalytic cracking, crude biodiesel, octane number, biofuel. ","PeriodicalId":17786,"journal":{"name":"Jurnal Kimia Valensi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44192325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
期刊
Jurnal Kimia Valensi
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1