Pub Date : 2023-08-31DOI: 10.14710/jksa.26.6.217-223
Kindi Farabi, Desi Harneti, Nurlelasari Nurlelasari, Tri Mayanti, Rani Maharani, Unang Supratman
Steroids are one of the secondary metabolite groups that are abundant in many organisms. In plants, this type of compound is called phytosterols. Phytosterols have been widely known to show many potential bioactivities such as anti-inflammatory, induced apoptosis, cytotoxic, anti-diabetic, angiogenic, and antioxidant. One of the sources of phytosterol compounds is the genus Aglaia. As the largest genus in the Meliaceae family, the genus Aglaia contains many bioactive compounds, including steroids. This research reported the isolation, structural determination, and cytotoxic activity of steroid compounds from the stem bark of Aglaia cucullata, one of the members of the Aglaia genus. Pure isolated steroid was obtained after maceration of dried stem bark with ethanol and partitioned based on difference polarity, continued by column chromatography. Spectroscopic methods, including HRMS, FTIR, 1D and 2D NMR, were used for structural determination. The compound structure identified as stigmast-5-en-3β-ol-3β-oleate was first isolated from this species. MCF-7 breast cancer cell, B16-F10 melanoma cell, and CV-1 normal fibroblast kidney cell were used to evaluate its cytotoxicity. Stigmast-5-en-3β-ol-3β-oleate displayed low cytotoxicity against those two cancer cells and a normal cell.
{"title":"Isolation, Structure Determination, and Cytotoxic Activity of Steroid Compound from The Stem Bark of Aglaia cucullata (Meliaceae)","authors":"Kindi Farabi, Desi Harneti, Nurlelasari Nurlelasari, Tri Mayanti, Rani Maharani, Unang Supratman","doi":"10.14710/jksa.26.6.217-223","DOIUrl":"https://doi.org/10.14710/jksa.26.6.217-223","url":null,"abstract":"Steroids are one of the secondary metabolite groups that are abundant in many organisms. In plants, this type of compound is called phytosterols. Phytosterols have been widely known to show many potential bioactivities such as anti-inflammatory, induced apoptosis, cytotoxic, anti-diabetic, angiogenic, and antioxidant. One of the sources of phytosterol compounds is the genus Aglaia. As the largest genus in the Meliaceae family, the genus Aglaia contains many bioactive compounds, including steroids. This research reported the isolation, structural determination, and cytotoxic activity of steroid compounds from the stem bark of Aglaia cucullata, one of the members of the Aglaia genus. Pure isolated steroid was obtained after maceration of dried stem bark with ethanol and partitioned based on difference polarity, continued by column chromatography. Spectroscopic methods, including HRMS, FTIR, 1D and 2D NMR, were used for structural determination. The compound structure identified as stigmast-5-en-3β-ol-3β-oleate was first isolated from this species. MCF-7 breast cancer cell, B16-F10 melanoma cell, and CV-1 normal fibroblast kidney cell were used to evaluate its cytotoxicity. Stigmast-5-en-3β-ol-3β-oleate displayed low cytotoxicity against those two cancer cells and a normal cell.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136035664","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}
Zeolite is a porous crystalline mineral alumina silica tetrahydrate that has an open three-dimensional framework structure that has channels and cavities filled with metal ions, while Bottom ash is also known to have high porosity and surface area. Thus, both zeolite and bottom ash can be used as adsorbents. This study aims to make an adsorbent based on Pahae natural zeolite with a mixture of bottom ash from coal as an adsorbent for iron (Fe) and manganese (Mn) metals in well water. Adsorbent made from Natural Zeolite Pahae-Coal Bottom Ash with a size of 200 mesh (74 µm) which has been chemically activated with 1 M NaOH solution, was prepared with various compositions of (100:0)%, (95:5)%, (90:10)%, (85:15)%, (80:20)%, (75:25)% respectively, then mold using a hydraulic press with a load of 6 tons of weight for 10 minutes. The mold samples were then physically activated with temperature variations of 600°C, 700°C, and 800°C for 4 hours, respectively. The addition of coal bottom ash filler is known to increase the porosity of the adsorbent with the composition of (75:25)% with an activated temperature of 800°C by 10%. The results of the AAS test showed that the adsorbent made from Natural Zeolite Pahae-Coal Bottom Ash reduced the content of Fe and Mn metals by 92.37% and 53.49% in well water, respectively.
{"title":"The Synthesis and Characterization of Pahae Natural Zeolite-Coal Bottom Ash Adsorbent for Fe and Mn Purifier in Well Water","authors":"Susilawati Susilawati, Nurul Syafina Lubis, Khatarina Meldawati Pasaribu","doi":"10.14710/jksa.26.6.211-216","DOIUrl":"https://doi.org/10.14710/jksa.26.6.211-216","url":null,"abstract":"Zeolite is a porous crystalline mineral alumina silica tetrahydrate that has an open three-dimensional framework structure that has channels and cavities filled with metal ions, while Bottom ash is also known to have high porosity and surface area. Thus, both zeolite and bottom ash can be used as adsorbents. This study aims to make an adsorbent based on Pahae natural zeolite with a mixture of bottom ash from coal as an adsorbent for iron (Fe) and manganese (Mn) metals in well water. Adsorbent made from Natural Zeolite Pahae-Coal Bottom Ash with a size of 200 mesh (74 µm) which has been chemically activated with 1 M NaOH solution, was prepared with various compositions of (100:0)%, (95:5)%, (90:10)%, (85:15)%, (80:20)%, (75:25)% respectively, then mold using a hydraulic press with a load of 6 tons of weight for 10 minutes. The mold samples were then physically activated with temperature variations of 600°C, 700°C, and 800°C for 4 hours, respectively. The addition of coal bottom ash filler is known to increase the porosity of the adsorbent with the composition of (75:25)% with an activated temperature of 800°C by 10%. The results of the AAS test showed that the adsorbent made from Natural Zeolite Pahae-Coal Bottom Ash reduced the content of Fe and Mn metals by 92.37% and 53.49% in well water, respectively.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135716603","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}
Green betel leaves have been traditionally employed within communities for various medicinal purposes, owing to their rich composition. These leaves are endowed with secondary metabolites encompassing flavonoids, phenols, saponins, and essential oils. Notably, the essential oils within green betel leaves possess a spectrum of biological properties, including antioxidant, antifungal, antidiabetic, anti-inflammatory, antibacterial, antitumor, anti-Alzheimer's, and anti-carcinogenic activities. In this study, the essential oil from green betel leaf collected from Klaten, Central Java, Indonesia, was isolated using water-steam distillation. The components of this isolate were identified using GC-MS analysis. Antibacterial activity was assessed against Staphylococcus epidermidis ATCC 12228 (S. epidermidis) and Escherichia coli (E. coli) using the well-diffusion method at various concentrations (25%, 50%, 75%, 90%, and 100%). Chloramphenicol served as the positive control, while a solution of Tween 20 in distilled water used as the negative control. The essential oil derived from green betel leaves exhibited a brownish-yellow color, possessed a distinctive betel aroma, and had a concentration of 0.21% v/w, a refractive index of 1.5001, and a specific gravity of 0.961 g/mL. The GC-MS analysis revealed the presence of 44 components, with the five most abundant constituents being acetyl chavicol (20.65%), germacrene- D (11.55%), eugenol (8.94%), trans-caryophyllene (7.92%), and chavicol (5.74%). Regarding antibacterial activity, the isolate demonstrated strong activity against S. epidermidis ATCC 12228 at a concentration of 75%, yielding an inhibition zone diameter of 12.33 mm. Similarly, it exhibited strong activity against E. coli at a concentration of 90%, resulting in an inhibition zone diameter of 12.67 mm.
{"title":"Isolation, Identification, and Antibacterial Testing of Essential Oil from Green Betel Leaf (Piper Betle L.) Using Well Diffusion Method","authors":"Enny Fachriyah, Hafizdah Fadillah, Purbowatiningrum Ria Sarjono, Ismiyarto Ismiyarto","doi":"10.14710/jksa.26.6.224-229","DOIUrl":"https://doi.org/10.14710/jksa.26.6.224-229","url":null,"abstract":"Green betel leaves have been traditionally employed within communities for various medicinal purposes, owing to their rich composition. These leaves are endowed with secondary metabolites encompassing flavonoids, phenols, saponins, and essential oils. Notably, the essential oils within green betel leaves possess a spectrum of biological properties, including antioxidant, antifungal, antidiabetic, anti-inflammatory, antibacterial, antitumor, anti-Alzheimer's, and anti-carcinogenic activities. In this study, the essential oil from green betel leaf collected from Klaten, Central Java, Indonesia, was isolated using water-steam distillation. The components of this isolate were identified using GC-MS analysis. Antibacterial activity was assessed against Staphylococcus epidermidis ATCC 12228 (S. epidermidis) and Escherichia coli (E. coli) using the well-diffusion method at various concentrations (25%, 50%, 75%, 90%, and 100%). Chloramphenicol served as the positive control, while a solution of Tween 20 in distilled water used as the negative control. The essential oil derived from green betel leaves exhibited a brownish-yellow color, possessed a distinctive betel aroma, and had a concentration of 0.21% v/w, a refractive index of 1.5001, and a specific gravity of 0.961 g/mL. The GC-MS analysis revealed the presence of 44 components, with the five most abundant constituents being acetyl chavicol (20.65%), germacrene- D (11.55%), eugenol (8.94%), trans-caryophyllene (7.92%), and chavicol (5.74%). Regarding antibacterial activity, the isolate demonstrated strong activity against S. epidermidis ATCC 12228 at a concentration of 75%, yielding an inhibition zone diameter of 12.33 mm. Similarly, it exhibited strong activity against E. coli at a concentration of 90%, resulting in an inhibition zone diameter of 12.67 mm.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135716604","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}
Pub Date : 2023-08-14DOI: 10.14710/jksa.26.6.230-237
Indah Permata Cantika, Muhammad Ali Zulfikar, Handajaya Rusli
Biodiesel is an alternative fuel that can be easily produced through transesterification with the assistance of a catalyst. Palm oil is a widely utilized feedstock for biodiesel production due to its abundant availability. In this study, a catalyst was synthesized using chitosan (CS) modified with ethylenediamine (EDA) and cross-linked with epichlorohydrin (ECH) for a catalyst heterogeneous in transesterification reaction. The resulting product (CS/EDA/ECH) was characterized using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Its performance was evaluated for biodiesel production. The CS/ECH/EDA catalyst achieved optimal reaction conditions with 5% EDA concentration at room temperature, an oil: methanol ratio of 1:1 (v/v), a total volume of 10 mL of oil and methanol, and a catalyst mass of 0.75 grams. The methyl esters formed corresponded to the fatty acid content in palm kernel, namely methyl palmitate, methyl 9,10-octadecadienoate, methyl oleate, methyl 12,13-tetradecadienoate, and methyl stearate with the highest methyl ester conversion is methyl oleate. The CS/ECH/EDA catalyst exhibited consistent performance after three use cycles.
{"title":"Synthesis of Ethylenediamine Modified Chitosan Beads for Biodiesel Production Catalyst: A Preliminary Study","authors":"Indah Permata Cantika, Muhammad Ali Zulfikar, Handajaya Rusli","doi":"10.14710/jksa.26.6.230-237","DOIUrl":"https://doi.org/10.14710/jksa.26.6.230-237","url":null,"abstract":"Biodiesel is an alternative fuel that can be easily produced through transesterification with the assistance of a catalyst. Palm oil is a widely utilized feedstock for biodiesel production due to its abundant availability. In this study, a catalyst was synthesized using chitosan (CS) modified with ethylenediamine (EDA) and cross-linked with epichlorohydrin (ECH) for a catalyst heterogeneous in transesterification reaction. The resulting product (CS/EDA/ECH) was characterized using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Its performance was evaluated for biodiesel production. The CS/ECH/EDA catalyst achieved optimal reaction conditions with 5% EDA concentration at room temperature, an oil: methanol ratio of 1:1 (v/v), a total volume of 10 mL of oil and methanol, and a catalyst mass of 0.75 grams. The methyl esters formed corresponded to the fatty acid content in palm kernel, namely methyl palmitate, methyl 9,10-octadecadienoate, methyl oleate, methyl 12,13-tetradecadienoate, and methyl stearate with the highest methyl ester conversion is methyl oleate. The CS/ECH/EDA catalyst exhibited consistent performance after three use cycles.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135308440","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}
Active compounds found in Syzygium myrtifolium Walp. leaves such as flavonoids, phenolics, and betulinic acid are known to have pharmacological activities. This research aimed to find active compounds found in Syzygium myrtifolium Walp. leaves, which have anticancer activity by inhibiting the protein leukotriene A4 hydrolase. Molecular docking methods are used to predict the activity and affinity between ligand-proteins. The research was conducted in silico on the active compound in Syzygium myrtifolium Walp. leaves, which met the five criteria of Lipinski’s rule for leukotriene A4 hydrolase with PDB code 3U9W. The software used were YASARA, MarvinSketch, and PLANTS, which can optimize ligands and bind ligand molecules to receptors. Then it was visualized using Discovery Studio Visualizer and analyzed the prediction of pharmacokinetics and toxicity. Docking results show that the four active compounds from the leaves of Syzygium myrtifolium Walp., namely bis (2-ethylhexyl) hexanedioate, 3-octadecyne, 1- octadecene, and (2E,6E)-farnesol have a lower docking score compared to bestatin; therefore, these four compounds have the potential to inhibit leukotriene A4 hydrolase receptors and can be candidates for colorectal anticancer compounds.
桃金娘中的活性化合物。叶子如黄酮类化合物、酚类物质和白桦酸已知具有药理活性。本研究旨在发现桃金娘中的活性成分。它通过抑制蛋白质白三烯A4水解酶而具有抗癌活性。分子对接方法用于预测配体蛋白之间的活性和亲和力。对桃金娘中的活性成分进行了硅晶法研究。符合白三烯A4水解酶Lipinski规则的5个标准，PDB编码3U9W。使用的软件有YASARA, marvinssketch和PLANTS，这些软件可以优化配体并将配体分子与受体结合。然后用Discovery Studio Visualizer将其可视化，并分析预测药代动力学和毒性。对接结果表明，从桃金娘叶中提取的四种活性化合物。，即双(2-乙基己基)己烯二酸酯、3-十八烯、1-十八烯和(2E,6E)-法尼醇的对接得分较低;因此，这四种化合物具有抑制白三烯A4水解酶受体的潜力，可以作为结直肠癌抗癌化合物的候选化合物。
{"title":"Molecular Docking of Active Compounds of Syzygium myrtifolium Walp. Leaves on Leukotriene A4 Hydrolase Receptors as Colorectal Anticancer","authors":"Daini Amanah, Rosario Trijuliamos Manalu, Munawarohthus Sholikha, Vilya Syafriana, Yasman Yasman","doi":"10.14710/jksa.26.5.194-203","DOIUrl":"https://doi.org/10.14710/jksa.26.5.194-203","url":null,"abstract":"Active compounds found in Syzygium myrtifolium Walp. leaves such as flavonoids, phenolics, and betulinic acid are known to have pharmacological activities. This research aimed to find active compounds found in Syzygium myrtifolium Walp. leaves, which have anticancer activity by inhibiting the protein leukotriene A4 hydrolase. Molecular docking methods are used to predict the activity and affinity between ligand-proteins. The research was conducted in silico on the active compound in Syzygium myrtifolium Walp. leaves, which met the five criteria of Lipinski’s rule for leukotriene A4 hydrolase with PDB code 3U9W. The software used were YASARA, MarvinSketch, and PLANTS, which can optimize ligands and bind ligand molecules to receptors. Then it was visualized using Discovery Studio Visualizer and analyzed the prediction of pharmacokinetics and toxicity. Docking results show that the four active compounds from the leaves of Syzygium myrtifolium Walp., namely bis (2-ethylhexyl) hexanedioate, 3-octadecyne, 1- octadecene, and (2E,6E)-farnesol have a lower docking score compared to bestatin; therefore, these four compounds have the potential to inhibit leukotriene A4 hydrolase receptors and can be candidates for colorectal anticancer compounds.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43449505","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}
Pub Date : 2023-07-17DOI: 10.14710/jksa.26.5.178-186
M. C. Djunaidi, Henita Saulia Utari, Khabibi Khabibi
Molecularly Imprinted Membrane (MIM) was synthesized using polyeugenoxy acetic acid as the functional polymer, polyethylene glycol as the crosslinker agent, and polysulfone as a base membrane which was applied as a selective glucose membrane transport, and the immersion time expected to determine the transport capability of the membrane. This study aimed to determine the selectivity and transport properties of the MIM and NIM membranes. NIM was used as a control for MIM to research the selectivity test. In comparison, MIM has a template, while NIM is without a template. In this study, eugenol derivatives were synthesized through a polymerization reaction using a BF3-diethylether catalyst polymerized for 16 hours to produce polyeugenoxy acetic acid (PA). The PA was contacted with 7500 ppm glucose. PA-glucose produced an imprinted membrane, while PA produced a non-imprinted membrane. The membrane thickness was measured with a micrometer, resulting in a measurement range of 0.08–0.10 mm. The best transport result was achieved at the membrane passage of 24 hours of immersion time because the effect of membrane immersion time can increase the porosity, hydrophilicity, and membrane’s transport ability. Transport with MIM membrane shows better and more selective results than NIM. This confirms the existence of a glucose template on the MIM membrane, which causes the MIM membrane to recognize glucose and transport glucose better than fructose. This study’s advantages include learning how immersion time affects membrane production and determining how well MIM and NIM membranes transport and select glucose and fructose. Furthermore, membrane characterizations were done using FTIR to identify functional groups, SEM-EDX to analyze the shape of the membrane, and a UV-Vis spectrophotometer to analyze the membrane’s selectivity and transport capabilities.
{"title":"Synthesis of Molecularly Imprinted Membrane Glucose for Selective Membrane Transport","authors":"M. C. Djunaidi, Henita Saulia Utari, Khabibi Khabibi","doi":"10.14710/jksa.26.5.178-186","DOIUrl":"https://doi.org/10.14710/jksa.26.5.178-186","url":null,"abstract":"Molecularly Imprinted Membrane (MIM) was synthesized using polyeugenoxy acetic acid as the functional polymer, polyethylene glycol as the crosslinker agent, and polysulfone as a base membrane which was applied as a selective glucose membrane transport, and the immersion time expected to determine the transport capability of the membrane. This study aimed to determine the selectivity and transport properties of the MIM and NIM membranes. NIM was used as a control for MIM to research the selectivity test. In comparison, MIM has a template, while NIM is without a template. In this study, eugenol derivatives were synthesized through a polymerization reaction using a BF3-diethylether catalyst polymerized for 16 hours to produce polyeugenoxy acetic acid (PA). The PA was contacted with 7500 ppm glucose. PA-glucose produced an imprinted membrane, while PA produced a non-imprinted membrane. The membrane thickness was measured with a micrometer, resulting in a measurement range of 0.08–0.10 mm. The best transport result was achieved at the membrane passage of 24 hours of immersion time because the effect of membrane immersion time can increase the porosity, hydrophilicity, and membrane’s transport ability. Transport with MIM membrane shows better and more selective results than NIM. This confirms the existence of a glucose template on the MIM membrane, which causes the MIM membrane to recognize glucose and transport glucose better than fructose. This study’s advantages include learning how immersion time affects membrane production and determining how well MIM and NIM membranes transport and select glucose and fructose. Furthermore, membrane characterizations were done using FTIR to identify functional groups, SEM-EDX to analyze the shape of the membrane, and a UV-Vis spectrophotometer to analyze the membrane’s selectivity and transport capabilities.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46629450","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}
Pub Date : 2023-07-04DOI: 10.14710/jksa.26.5.187-193
Sri Fauziah, Puput Melati, A. H. Mulyati, M. Rafi, E. Rohaeti
Thin layer chromatography (TLC) fingerprint profile analysis can be used for quality control of herbal medicinal raw materials through identification, authentication, and discrimination. This study aims to develop a fingerprint analysis method for tempuyung TLC (Sonchus arvensis L.), which is then used for quality control. Tempuyung was extracted with methanol using ultrasonication which was then analyzed using the developed fingerprint TLC method. The optimum mobile phase used to separate compounds from tempuyung was a composition of chloroform: ethyl acetate: dichloromethane: formic acid (7.5:2:0.5:0.1) and produced eleven bands. The mobile phase composition produced good separation and had a typical luteolin band with an Rf value of 0.22, detected under UV 366 nm and derivatized with 10% sulfuric acid reagent. This method was applied to tempuyung from three locations, including Malang, Solo, and Yogyakarta, whose fingerprint patterns did not differ significantly. The fingerprint method has been validated and met the acceptance requirements for quality control of tempuyung.
{"title":"Thin Layer Chromatography Fingerprint Analysis of Tempuyung (Sonchus arvensis L.)","authors":"Sri Fauziah, Puput Melati, A. H. Mulyati, M. Rafi, E. Rohaeti","doi":"10.14710/jksa.26.5.187-193","DOIUrl":"https://doi.org/10.14710/jksa.26.5.187-193","url":null,"abstract":"Thin layer chromatography (TLC) fingerprint profile analysis can be used for quality control of herbal medicinal raw materials through identification, authentication, and discrimination. This study aims to develop a fingerprint analysis method for tempuyung TLC (Sonchus arvensis L.), which is then used for quality control. Tempuyung was extracted with methanol using ultrasonication which was then analyzed using the developed fingerprint TLC method. The optimum mobile phase used to separate compounds from tempuyung was a composition of chloroform: ethyl acetate: dichloromethane: formic acid (7.5:2:0.5:0.1) and produced eleven bands. The mobile phase composition produced good separation and had a typical luteolin band with an Rf value of 0.22, detected under UV 366 nm and derivatized with 10% sulfuric acid reagent. This method was applied to tempuyung from three locations, including Malang, Solo, and Yogyakarta, whose fingerprint patterns did not differ significantly. The fingerprint method has been validated and met the acceptance requirements for quality control of tempuyung.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46874395","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}
Pub Date : 2023-06-22DOI: 10.14710/jksa.26.5.160-165
M. Mashuni, F. Hamid, M. Jahiding, Andi Muhammad Naufal Khaeri
In recent years, sensor applications have been critical in many fields, especially food safety and pesticides. Organophosphorus pesticides (OPPs) can be detected using a potentiometric biosensor with a membrane electrode made of a new natural material based on cellulose acetate (CA). Acetylcholinesterase was immobilized to 15% modified CA membrane electrodes using glutaraldehyde (GTA) as crosslinking agent and gold (Au) electrode. An indirect method used an acetylthiocholine chloride (ATCl) substrate to find OPPs like chlorpyrifos, profenophos, and diazinon. The working electrode was an CA/GTA membrane electrode, and the reference electrode was an Ag/AgCl electrode, whose potential value was measured with a potentiometer. The surface morphology of the biosensor membrane was investigated using scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX). It showed that the CA membrane has a smooth, porous surface and is very dense, and its structure consists of 71.27% carbon (C) and 28.73% oxygen (O) with an average diameter of 562.33 nm. A potentiometric biosensor based on AChE inhibition for the detection of OPPs showed a limit of detection (LoD) of 1×10−6 μg/L with a linearity range of 1×10−6–1.0 μg/L. The %inhibition value for the chlorpyrifos pesticide was 14.44 to 73.08%, profenophos was 11.98 to 77.98%, and diazinon was 18.58 to 83.27%. Therefore, higher inhibitor concentrations (OPPs) have a greater ability to prevent the AChE enzyme from breaking down the acetylcholine substrate. The biosensor with the CA membrane has a wide linearity range and a low detection limit. The potentiometer rapidly detects pesticide residues.
{"title":"Biosensor based on Cellulose Acetate/Glutaraldehyde Membrane Electrodes for detection of organophosphorus pesticides","authors":"M. Mashuni, F. Hamid, M. Jahiding, Andi Muhammad Naufal Khaeri","doi":"10.14710/jksa.26.5.160-165","DOIUrl":"https://doi.org/10.14710/jksa.26.5.160-165","url":null,"abstract":"In recent years, sensor applications have been critical in many fields, especially food safety and pesticides. Organophosphorus pesticides (OPPs) can be detected using a potentiometric biosensor with a membrane electrode made of a new natural material based on cellulose acetate (CA). Acetylcholinesterase was immobilized to 15% modified CA membrane electrodes using glutaraldehyde (GTA) as crosslinking agent and gold (Au) electrode. An indirect method used an acetylthiocholine chloride (ATCl) substrate to find OPPs like chlorpyrifos, profenophos, and diazinon. The working electrode was an CA/GTA membrane electrode, and the reference electrode was an Ag/AgCl electrode, whose potential value was measured with a potentiometer. The surface morphology of the biosensor membrane was investigated using scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX). It showed that the CA membrane has a smooth, porous surface and is very dense, and its structure consists of 71.27% carbon (C) and 28.73% oxygen (O) with an average diameter of 562.33 nm. A potentiometric biosensor based on AChE inhibition for the detection of OPPs showed a limit of detection (LoD) of 1×10−6 μg/L with a linearity range of 1×10−6–1.0 μg/L. The %inhibition value for the chlorpyrifos pesticide was 14.44 to 73.08%, profenophos was 11.98 to 77.98%, and diazinon was 18.58 to 83.27%. Therefore, higher inhibitor concentrations (OPPs) have a greater ability to prevent the AChE enzyme from breaking down the acetylcholine substrate. The biosensor with the CA membrane has a wide linearity range and a low detection limit. The potentiometer rapidly detects pesticide residues.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48066388","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}
Pub Date : 2023-06-22DOI: 10.14710/jksa.26.5.166-177
Syamsul Falah, L. Ambarsari, Dimas Andrianto, Rini Kurniasih, Sanro Tachibana
A Flavonoid glycoside compound, isolated and identified from E. polyantha as myricitrin, was analyzed as a ligand for its molecular binding activity against SARS-CoV-2 protein (receptor binding domain on Spike/RBD, main protease/nsp5, EndoRNAse, RNA-dependent-RNA-polymerase/RdRp), and its receptor, ACE2, and computationally assessed via molecular docking method. This study aims to determine the potential of myricitrin in E. polyantha from Indonesia as an antiviral drug for SARS-CoV-2 through molecular docking and molecular dynamic simulation analysis. The results showed that the myricitrin had the strongest binding affinity energy towards the three important SARS-CoV-2 proteins, namely endoRNAse, main protease (3CLpro), and RdRp with ∆G values of −9.60 kcal/mol, −8.40 kcal/mol, and −8.30 kcal/mol, respectively. These values are stronger than the comparator ligands of favipiravir (−5.60 kcal/mol), atazanavir (−7.20 kcal/mol), and remdesivir (−7.70 kcal/mol). This indicated that the compound has the potential as an inhibitor against 3CLpro, endoRNAse, and RdRp of SARS-CoV-2 proteins. This result was supported by the prediction made according to the Molprobity and PASS Online web servers, which showed that myricitrin has high bioactivity potential as an enzyme inhibitor (with a score of 0.38) and antiviral (with a score of 0.704).
{"title":"The potential of Myricitrin, a Flavonoid Compound in Eugenia polyantha from Indonesia, as an Antiviral Drug for SARS-Cov-2 through the Molecular Docking Analysis","authors":"Syamsul Falah, L. Ambarsari, Dimas Andrianto, Rini Kurniasih, Sanro Tachibana","doi":"10.14710/jksa.26.5.166-177","DOIUrl":"https://doi.org/10.14710/jksa.26.5.166-177","url":null,"abstract":"A Flavonoid glycoside compound, isolated and identified from E. polyantha as myricitrin, was analyzed as a ligand for its molecular binding activity against SARS-CoV-2 protein (receptor binding domain on Spike/RBD, main protease/nsp5, EndoRNAse, RNA-dependent-RNA-polymerase/RdRp), and its receptor, ACE2, and computationally assessed via molecular docking method. This study aims to determine the potential of myricitrin in E. polyantha from Indonesia as an antiviral drug for SARS-CoV-2 through molecular docking and molecular dynamic simulation analysis. The results showed that the myricitrin had the strongest binding affinity energy towards the three important SARS-CoV-2 proteins, namely endoRNAse, main protease (3CLpro), and RdRp with ∆G values of −9.60 kcal/mol, −8.40 kcal/mol, and −8.30 kcal/mol, respectively. These values are stronger than the comparator ligands of favipiravir (−5.60 kcal/mol), atazanavir (−7.20 kcal/mol), and remdesivir (−7.70 kcal/mol). This indicated that the compound has the potential as an inhibitor against 3CLpro, endoRNAse, and RdRp of SARS-CoV-2 proteins. This result was supported by the prediction made according to the Molprobity and PASS Online web servers, which showed that myricitrin has high bioactivity potential as an enzyme inhibitor (with a score of 0.38) and antiviral (with a score of 0.704).","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49424302","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}
Pub Date : 2023-06-15DOI: 10.14710/jksa.26.4.143-150
Sri Hilma Siregar, P. Prasetya, Norramizawati Norramizawati, Marlian Marlian, Aulia Rizki Ramadhanti
Dye is one of the waste waters, which will be a problem if the content is excessive in the water. Modifying bentonite with titanium dioxide (TiO2) as a photocatalyst for removal of dye waste. In this study, composite synthesis was carried out by mixing bentonite and TiO2 suspensions. The mass of bentonite is 20 g, and the mass variations of TiO2 are 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%. The resulting composite was heated using a furnace at 550°C for 5 hours. Bentonite-TiO2 composites were characterized using Fourier Transform Infrared, X-Ray Diffraction, and Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX). Photodegradation of methylene blue dye with bentonite-TiO2 was carried out by varying the mass of bentonite-TiO2 photocatalysts (0.02, 0.04, 0.06, 0.08 g); variations in pH (1, 3, 5, 7, and 9), and variations in UV irradiation time (30, 60, 90, and 120 minutes). The results of characterization with FTIR showed the presence of Ti-O-Ti vibrations at wavenumber 1419 cm-1 and Si-O-Ti at wave numbers 780 cm-1 and 799 cm-1. Characterization of 20% bentonite-TiO2 by XRD showed rutile, anatase, and montmorillonite phases. The SEM-EDX bentonite-TiO2 characterization results produced some small particles with a layered structure with TiO2 particles clumping and still in the form of agglomerates, and the EDX results showed the chemical composition of Si and Ti. The results of photodegradation showed that the best activity for the bentonite-TiO2 composite occurred in photocatalyst BT-20% with a mass of 0.08 g, pH 1, and UV irradiation time of 120 minutes with methylene blue 99.942% degraded.
{"title":"Titanium Dioxide (TiO2) Modified Bentonite for Photodegradation in Methylene Blue Dye","authors":"Sri Hilma Siregar, P. Prasetya, Norramizawati Norramizawati, Marlian Marlian, Aulia Rizki Ramadhanti","doi":"10.14710/jksa.26.4.143-150","DOIUrl":"https://doi.org/10.14710/jksa.26.4.143-150","url":null,"abstract":"Dye is one of the waste waters, which will be a problem if the content is excessive in the water. Modifying bentonite with titanium dioxide (TiO2) as a photocatalyst for removal of dye waste. In this study, composite synthesis was carried out by mixing bentonite and TiO2 suspensions. The mass of bentonite is 20 g, and the mass variations of TiO2 are 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%. The resulting composite was heated using a furnace at 550°C for 5 hours. Bentonite-TiO2 composites were characterized using Fourier Transform Infrared, X-Ray Diffraction, and Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX). Photodegradation of methylene blue dye with bentonite-TiO2 was carried out by varying the mass of bentonite-TiO2 photocatalysts (0.02, 0.04, 0.06, 0.08 g); variations in pH (1, 3, 5, 7, and 9), and variations in UV irradiation time (30, 60, 90, and 120 minutes). The results of characterization with FTIR showed the presence of Ti-O-Ti vibrations at wavenumber 1419 cm-1 and Si-O-Ti at wave numbers 780 cm-1 and 799 cm-1. Characterization of 20% bentonite-TiO2 by XRD showed rutile, anatase, and montmorillonite phases. The SEM-EDX bentonite-TiO2 characterization results produced some small particles with a layered structure with TiO2 particles clumping and still in the form of agglomerates, and the EDX results showed the chemical composition of Si and Ti. The results of photodegradation showed that the best activity for the bentonite-TiO2 composite occurred in photocatalyst BT-20% with a mass of 0.08 g, pH 1, and UV irradiation time of 120 minutes with methylene blue 99.942% degraded.","PeriodicalId":17811,"journal":{"name":"Jurnal Kimia Sains dan Aplikasi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46789146","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}
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