N. Jamarun, Nabiila Ayyu Trycahyani, S. Arief, Upita Septiani, V. Sisca
Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) is a calcium phosphate-based biomaterial that is widely used in bone implants due to its similarity in composition with the constituent elements of bone. However, HAp still has poor mechanical properties, so research was carried out to improve the mechanical properties such as reduced brittleness, less fracture resistance, and a denser structure of HAp by synthesizing composites with PEG. This study used PEG as a filler and HAp as a matrix. HAp was synthesized from blood clam shells (Anadara granosa) using the sol-gel method. HAp-PEG composite was synthesized using the in-situ method with various HAp concentrations of 40, 50, 60, 70, and 80%. FTIR characterization showed the presence of functional groups PO43− and CO23−, which indicated the presence of HAp. Analysis of the XRD pattern showed a crystal size of 24.194 nm. SEM-EDX showed the needle-shaped HAp-PEG composite HAp crystal morphology and obtained a Ca/P ratio of 1.87. Analysis of DTA results showed a weight loss of 65.72% in the composite at a temperature > 200 °C. A degradation test was also carried out to see the percentage of the HAp-PEG composite to be degraded, and the optimum degraded composite with increasing days had a concentration of 70%.
{"title":"Synthesis of Hydroxyapatite-Polyethylene Glycol with In-Situ Method Using Calcium Oxide from Blood Shells (Anadara granosa)","authors":"N. Jamarun, Nabiila Ayyu Trycahyani, S. Arief, Upita Septiani, V. Sisca","doi":"10.22146/ijc.78538","DOIUrl":"https://doi.org/10.22146/ijc.78538","url":null,"abstract":"Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) is a calcium phosphate-based biomaterial that is widely used in bone implants due to its similarity in composition with the constituent elements of bone. However, HAp still has poor mechanical properties, so research was carried out to improve the mechanical properties such as reduced brittleness, less fracture resistance, and a denser structure of HAp by synthesizing composites with PEG. This study used PEG as a filler and HAp as a matrix. HAp was synthesized from blood clam shells (Anadara granosa) using the sol-gel method. HAp-PEG composite was synthesized using the in-situ method with various HAp concentrations of 40, 50, 60, 70, and 80%. FTIR characterization showed the presence of functional groups PO43− and CO23−, which indicated the presence of HAp. Analysis of the XRD pattern showed a crystal size of 24.194 nm. SEM-EDX showed the needle-shaped HAp-PEG composite HAp crystal morphology and obtained a Ca/P ratio of 1.87. Analysis of DTA results showed a weight loss of 65.72% in the composite at a temperature > 200 °C. A degradation test was also carried out to see the percentage of the HAp-PEG composite to be degraded, and the optimum degraded composite with increasing days had a concentration of 70%.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41868419","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}
S. Suratno, S. K. Wahono, D. Siswanta, N. H. Aprilita
This study analyzed MeHg in a fast, simple, low-waste, and accurate by using ultra-high liquid chromatography coupled with inductively coupled plasma mass spectrometry. Simple preparation by liquid extraction with sonication at room temperature was effective extract MeHg from Certified Reference Material (CRM) and shark meat samples. Effective MeHg separation was achieved in less than 300 s using a C18 Hypersil Gold analytical column with a mobile gradient phase of 0.5% (w/v) L-cysteine in 2% (v/v) HNO3 and 100% methanol. The MeHg was extracted from 100 mg of shark meat using 1 mL of 0.5% (w/v) L-cysteine in 2% (v/v) HNO3 and sonicated for 30 min. Analysis of certified reference material (DORM-4) showed values between the experimental and certified values. The observed limit of detection and quantification MeHg were 0.86 and 2.85 pg/L, respectively. This method was applied to measure MeHg in shark meat from Binuangeun areas. The MeHg concentration in Rhizoprionodon acutus was 0.22–0.63 mg/kg wet weight (w.w.), Squalus hemipinis 0.68–1.14 mg/kg w.w., and 0.29–1.22 mg/kg w.w. for Sphyrna lewini. This study provides a quick and easy method to evaluate MeHg in shark meat or other seafood products and applies to many samples in a single assay.
{"title":"Development of Methylmercury Analysis by Ultra-High Performance Liquid Chromatography Coupled with ICP-MS and Its Application on Sharks’ Meat Measurement","authors":"S. Suratno, S. K. Wahono, D. Siswanta, N. H. Aprilita","doi":"10.22146/ijc.82512","DOIUrl":"https://doi.org/10.22146/ijc.82512","url":null,"abstract":"This study analyzed MeHg in a fast, simple, low-waste, and accurate by using ultra-high liquid chromatography coupled with inductively coupled plasma mass spectrometry. Simple preparation by liquid extraction with sonication at room temperature was effective extract MeHg from Certified Reference Material (CRM) and shark meat samples. Effective MeHg separation was achieved in less than 300 s using a C18 Hypersil Gold analytical column with a mobile gradient phase of 0.5% (w/v) L-cysteine in 2% (v/v) HNO3 and 100% methanol. The MeHg was extracted from 100 mg of shark meat using 1 mL of 0.5% (w/v) L-cysteine in 2% (v/v) HNO3 and sonicated for 30 min. Analysis of certified reference material (DORM-4) showed values between the experimental and certified values. The observed limit of detection and quantification MeHg were 0.86 and 2.85 pg/L, respectively. This method was applied to measure MeHg in shark meat from Binuangeun areas. The MeHg concentration in Rhizoprionodon acutus was 0.22–0.63 mg/kg wet weight (w.w.), Squalus hemipinis 0.68–1.14 mg/kg w.w., and 0.29–1.22 mg/kg w.w. for Sphyrna lewini. This study provides a quick and easy method to evaluate MeHg in shark meat or other seafood products and applies to many samples in a single assay.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49251138","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}
Rafles Sinaga, W. B. Kusumaningrum, Y. Taryana, W. Fatriasari, Zuratul Ain Abdul Hami, L. Suryanegara, H. Holilah, Y. Darma
The polymer/ferroferric oxide (Fe3O4) foam and aerogel composites generally exhibit superior radar absorptivity performance. However, these composites have poor mechanical and thermal properties. This study manufactured a polylactic acid (PLA)/Fe3O4 bio-composite and evaluated the radar absorptivity, thermal, and mechanical properties of radar-absorbing material. The composites were prepared using a solvent casting method to mix PLA and Fe3O4 at varying concentrations, followed by evaporation, oven drying, and hot pressing into a film. Thermogravimetric analysis showed that the decomposition temperature of the PLA/Fe3O4-5% composite occurred at around 306 °C, which shifted to a lower decomposition temperature of PLA. The addition of 25 wt.% Fe3O4 improved the tensile modulus of neat PLA from 2.92 to 3.55 GPa. The vector network analyzer demonstrated that the addition of Fe3O4 at 25% improved the reflection loss of PLA from –5.17 to -25.83 dB at a thickness of 3 mm, with energy absorbed by 99.74% at frequency position 10.58 GHz. These results demonstrated that PLA/Fe3O4 composites have great potential in radar-absorbing practical applications.
{"title":"Robust Biocomposite Film of Polylactic Acid and Ferroferric Oxide as a Radar Absorbing Material","authors":"Rafles Sinaga, W. B. Kusumaningrum, Y. Taryana, W. Fatriasari, Zuratul Ain Abdul Hami, L. Suryanegara, H. Holilah, Y. Darma","doi":"10.22146/ijc.79089","DOIUrl":"https://doi.org/10.22146/ijc.79089","url":null,"abstract":"The polymer/ferroferric oxide (Fe3O4) foam and aerogel composites generally exhibit superior radar absorptivity performance. However, these composites have poor mechanical and thermal properties. This study manufactured a polylactic acid (PLA)/Fe3O4 bio-composite and evaluated the radar absorptivity, thermal, and mechanical properties of radar-absorbing material. The composites were prepared using a solvent casting method to mix PLA and Fe3O4 at varying concentrations, followed by evaporation, oven drying, and hot pressing into a film. Thermogravimetric analysis showed that the decomposition temperature of the PLA/Fe3O4-5% composite occurred at around 306 °C, which shifted to a lower decomposition temperature of PLA. The addition of 25 wt.% Fe3O4 improved the tensile modulus of neat PLA from 2.92 to 3.55 GPa. The vector network analyzer demonstrated that the addition of Fe3O4 at 25% improved the reflection loss of PLA from –5.17 to -25.83 dB at a thickness of 3 mm, with energy absorbed by 99.74% at frequency position 10.58 GHz. These results demonstrated that PLA/Fe3O4 composites have great potential in radar-absorbing practical applications.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45704347","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}
H. Syaima, S. Rahardjo, Anisa Nurul Hanifa, Ariffah Ana Fathonah, R. Setyaningsih
The aims of this research are to synthesize and determine the formula, characteristics, and complex structure of Cu(II) and Co(II) with 4-aminophenol and to investigate their antibacterial activity. The complexes were synthesized by refluxing a solution of CuSO4·5H2O and CoSO4·7H2O, respectively, with 4-aminophenol in methanol for 1 h. The products were characterized using UV-Vis spectroscopy, atomic absorption spectroscopy, thermal analysis, conductivity, FTIR, and magnetic moment. The formation of the complex was indicated by shifting of maximum wavelength of the metal solution toward shorter, i.e., 817 to 421 nm for Cu(II) and 566 to 450 nm for Co(II). From the characterization, the proposed formulas of the complexes are [Cu(4-aminophenol)4]SO4 and [Co(4-aminophenol)4(H2O)2]SO4·5H2O forming square planar and octahedral geometry, respectively. Both complexes are paramagnetic with negligible antibacterial activity against Staphylococcus aureus, Staphylococcus epidermis, Escherichia coli, and Pseudomonas aeruginosa.
{"title":"Novel Metal Coordination Complexes Based on 4-Aminophenol: Spectroscopic Analysis and Antibacterial Test","authors":"H. Syaima, S. Rahardjo, Anisa Nurul Hanifa, Ariffah Ana Fathonah, R. Setyaningsih","doi":"10.22146/ijc.78757","DOIUrl":"https://doi.org/10.22146/ijc.78757","url":null,"abstract":"The aims of this research are to synthesize and determine the formula, characteristics, and complex structure of Cu(II) and Co(II) with 4-aminophenol and to investigate their antibacterial activity. The complexes were synthesized by refluxing a solution of CuSO4·5H2O and CoSO4·7H2O, respectively, with 4-aminophenol in methanol for 1 h. The products were characterized using UV-Vis spectroscopy, atomic absorption spectroscopy, thermal analysis, conductivity, FTIR, and magnetic moment. The formation of the complex was indicated by shifting of maximum wavelength of the metal solution toward shorter, i.e., 817 to 421 nm for Cu(II) and 566 to 450 nm for Co(II). From the characterization, the proposed formulas of the complexes are [Cu(4-aminophenol)4]SO4 and [Co(4-aminophenol)4(H2O)2]SO4·5H2O forming square planar and octahedral geometry, respectively. Both complexes are paramagnetic with negligible antibacterial activity against Staphylococcus aureus, Staphylococcus epidermis, Escherichia coli, and Pseudomonas aeruginosa.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43913897","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}
A. Wibowo, Annisa Nur Buana Wati, Anas Santria, A. Masykur, M. Firdaus
Electrocatalytic parameters of a Pt/C standard and a sample of terbium(III) monoporphyrinato were investigated in different solutions. N electron transfer, Tafel slope, Eonset, and overpotential of the catalyst of Pt/C in different solutions were calculated and analyzed using a rotating ring disk electrode (RRDE) in 0.5 M H2SO4, 0.1 M HClO4 and 0.1 M NaOH. In the RRDE measurements, a bipotentiostat at a potential range of 1.03 to 0.05 V vs RHE (Ering = 1.2 V vs RHE) with a scan rate of 5 mV/s and rotation rates of 200, 400, 900, 1600 and 2500 rpm was used. Hereafter, the test of terbium(III) monoporphyrinato compound formulated in [Tb(TPP)(cyclen)]Cl (TPP = 5,10,15,20-tetraphenylporphyrinato; cyclen = 1,4,7,10-tetraazacyclododecane) as a candidate material for ORR electrocatalyst was also done. The results showed that the measurement of Pt/C standards was satisfactory according to the literature for all parameters with the n electron transfer close to 4 in all electrolytes media. [Tb(TPP)(cyclen)]Cl had an n electron transfer value of 2.38, suggesting that the [Tb(TPP)(cyclen)]Cl compound has less potential for ORR catalysts.
研究了Pt/C标准品和单卟啉铽样品在不同溶液中的电催化参数。在0.5 M H2SO4、0.1 M HClO4和0.1 M NaOH溶液中，利用旋转环盘电极(RRDE)计算并分析了Pt/C催化剂在不同溶液中的N电子转移、Tafel斜率、Eonset和过电位。在RRDE测量中，使用了一个电位范围为1.03至0.05 V/ RHE (Ering = 1.2 V/ RHE)的双恒电位器，扫描速率为5 mV/s，转速为200、400、900、1600和2500 rpm。随后，对[Tb(TPP)(环)]Cl (TPP = 5,10,15,20-四苯基卟啉)配制的铽(III)单卟啉化合物进行了试验;cyclen = 1,4,7,10-四氮杂环十二烷)作为ORR电催化剂的候选材料。结果表明，Pt/C标准品在所有电解质介质中的n电子转移量均接近4，所有参数的测量结果与文献相符。[Tb(TPP)(cyclen)]Cl的n电子转移值为2.38，表明[Tb(TPP)(cyclen)]Cl化合物作为ORR催化剂的潜力较小。
{"title":"Oxygen Reduction Reaction (ORR) of Pt/C Standard in Different Electrolyte Solutions and Terbium(III) Monoporphyrinato Complex","authors":"A. Wibowo, Annisa Nur Buana Wati, Anas Santria, A. Masykur, M. Firdaus","doi":"10.22146/ijc.78807","DOIUrl":"https://doi.org/10.22146/ijc.78807","url":null,"abstract":"Electrocatalytic parameters of a Pt/C standard and a sample of terbium(III) monoporphyrinato were investigated in different solutions. N electron transfer, Tafel slope, Eonset, and overpotential of the catalyst of Pt/C in different solutions were calculated and analyzed using a rotating ring disk electrode (RRDE) in 0.5 M H2SO4, 0.1 M HClO4 and 0.1 M NaOH. In the RRDE measurements, a bipotentiostat at a potential range of 1.03 to 0.05 V vs RHE (Ering = 1.2 V vs RHE) with a scan rate of 5 mV/s and rotation rates of 200, 400, 900, 1600 and 2500 rpm was used. Hereafter, the test of terbium(III) monoporphyrinato compound formulated in [Tb(TPP)(cyclen)]Cl (TPP = 5,10,15,20-tetraphenylporphyrinato; cyclen = 1,4,7,10-tetraazacyclododecane) as a candidate material for ORR electrocatalyst was also done. The results showed that the measurement of Pt/C standards was satisfactory according to the literature for all parameters with the n electron transfer close to 4 in all electrolytes media. [Tb(TPP)(cyclen)]Cl had an n electron transfer value of 2.38, suggesting that the [Tb(TPP)(cyclen)]Cl compound has less potential for ORR catalysts.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42988001","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}
In the current endeavor, a new Schiff base of 14,15,34,35-tetrahydro-11H,31H-4,8-diaza-1,3(3,4)-ditriazola-2,6(1,4)-dibenzenacyclooctaphane-4,7-dien-15,35-dithione was synthesized. The new symmetrical Schiff base (Q) was employed as a ligand to produce new complexes comprising Co(II), Ni(II), Cu(II), Pd(II), and Pt(II) metal-ions at a ratio of 2:1 (Metal:ligand). There have been new ligands and their complexes validated by (FTIR), (UV-visible), 1H-NMR, 13C-NMR, CHNS, and FAA spectroscopy, Thermogravimetric analysis (TG), Molar conductivity, and Magnetic susceptibility. The photostabilization technique to enhance the polymer was also used. The ligand Q and its complexes were mixed in 0.5% w/w of polyvinyl chloride in tetrahydrofuran (THF). The photo stabilization of polymer films was studied at 25 °C under irradiation of light λ 380–250 nm with intensity of 7.75 × 10−9 ein dm−3 s−1. The photostabilization activity of these compounds was determined by monitoring the hydroxyl, carbonyl, and polyene indexes, weight loss method with irradiation time. The ICO, IPO and IOH index values increased with irradiation time, this increase depends on the type of additives. The surface morphology for these films was studied during irradiation time. This project is highly intriguing for the ecosystem in regards to the decrease in the consumption of plastic.
在目前的工作中，合成了一种新的希夫碱14,15,34,35-四氢-11H，31H-4,8-二氮杂-1,3（3,4）-二三唑-2,6（1,4）-双苄基环辛phane-4,7-二烯-15,35-二硫酮。使用新的对称希夫碱（Q）作为配体来产生新的复合物，该复合物包含比例为2:1的Co（II）、Ni（Ⅱ）、Cu（Ⅱ），Pd（Ⅱ）和Pt（II）金属离子（金属：配体）。已经有新的配体及其配合物通过（FTIR）、（UV-可见）、1H-NMR、13C-NMR、CHNS和FAA光谱、热重分析（TG）、摩尔电导率和磁化率进行了验证。还使用了光稳定技术来增强聚合物。将配体Q及其配合物混合在0.5%（w/w）的聚氯乙烯的四氢呋喃（THF）中。研究了聚合物薄膜在25°C、波长为380–250 nm、强度为7.75×10−9 ein dm−3 s−1的光照下的光稳定性。通过监测羟基、羰基和多烯指数，用辐照时间失重法测定了这些化合物的光稳定活性。ICO、IPO和IOH指数值随着辐照时间的增加而增加，这种增加取决于添加剂的类型。研究了这些薄膜在辐照过程中的表面形态。这个项目对减少塑料消费的生态系统来说非常有趣。
{"title":"Synthesis of Co(ll), Ni(ll), Cu(ll), Pd(ll), and Pt(lV) Complexes with 14,15,34,35-Tetrahydro-11H, 31H-4,8-diaza-1,3(3,4)-ditriazola-2,6(1,4)-dibenzenacyclooctaphane-4,7-dien-15,35-dithione, and the Thermal Stability of Polyvinyl Chloride Modified Complexes","authors":"A. Al-khazraji","doi":"10.22146/ijc.81272","DOIUrl":"https://doi.org/10.22146/ijc.81272","url":null,"abstract":"In the current endeavor, a new Schiff base of 14,15,34,35-tetrahydro-11H,31H-4,8-diaza-1,3(3,4)-ditriazola-2,6(1,4)-dibenzenacyclooctaphane-4,7-dien-15,35-dithione was synthesized. The new symmetrical Schiff base (Q) was employed as a ligand to produce new complexes comprising Co(II), Ni(II), Cu(II), Pd(II), and Pt(II) metal-ions at a ratio of 2:1 (Metal:ligand). There have been new ligands and their complexes validated by (FTIR), (UV-visible), 1H-NMR, 13C-NMR, CHNS, and FAA spectroscopy, Thermogravimetric analysis (TG), Molar conductivity, and Magnetic susceptibility. The photostabilization technique to enhance the polymer was also used. The ligand Q and its complexes were mixed in 0.5% w/w of polyvinyl chloride in tetrahydrofuran (THF). The photo stabilization of polymer films was studied at 25 °C under irradiation of light λ 380–250 nm with intensity of 7.75 × 10−9 ein dm−3 s−1. The photostabilization activity of these compounds was determined by monitoring the hydroxyl, carbonyl, and polyene indexes, weight loss method with irradiation time. The ICO, IPO and IOH index values increased with irradiation time, this increase depends on the type of additives. The surface morphology for these films was studied during irradiation time. This project is highly intriguing for the ecosystem in regards to the decrease in the consumption of plastic.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43375127","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}
H. Djamaludin, H. Hardoko, M. Dailami, Vivi Nurhadianty, Mohammad Sholeh Uluwwi, Novaldo Yuri Muhammad, Tristany Brighton Jorghi
Tuna is one of the fish source of nutrition for humans because it contains high-quality protein and omega-3 fatty acids, which are beneficial for health. Tuna can be processed into various products, such as tuna-shredded. But it still has a drawback, i.e., the lower-fiber content. To enrich the fiber of tuna-shredded, fortification with banana blossoms can be developed as functional food such as preventing gout arthritis. The aims of this study were to develop a diversified product of tuna-shredded fortified banana blossoms and to determine the antioxidant activity in vitro and anti-arthritis gout through inhibition of the xanthine oxidase (XO) enzyme in silico. The method used was a simple, completely randomized design. The formulation of tuna-shredded used fortification and active compounds analyzed by LC-HRMS. The antioxidant activity was analyzed by the DPPH. Inhibition of the XO enzyme was analyzed by molecular docking in silico. The results showed that tuna-shredded extract contained 32 compounds, which had total phenolic was 0.00134 mg GAE/g, total flavonoid was 0.0006670 mg QE/g, and IC50 was 4.38 ppm. Ferulic acid had the potential to inhibit the XO enzyme with binding affinity was -9.70 kcal/mol through hydrogen bonds and hydrophobic interactions.
{"title":"The Compounds of Tuna-Shredded (Thunnus sp.) Fortified Banana Blossom Extracts’ Antioxidant Activity and Xanthine Oxidase Enzyme Inhibition Capacity: An In Vitro-In Silico Study","authors":"H. Djamaludin, H. Hardoko, M. Dailami, Vivi Nurhadianty, Mohammad Sholeh Uluwwi, Novaldo Yuri Muhammad, Tristany Brighton Jorghi","doi":"10.22146/ijc.81448","DOIUrl":"https://doi.org/10.22146/ijc.81448","url":null,"abstract":"Tuna is one of the fish source of nutrition for humans because it contains high-quality protein and omega-3 fatty acids, which are beneficial for health. Tuna can be processed into various products, such as tuna-shredded. But it still has a drawback, i.e., the lower-fiber content. To enrich the fiber of tuna-shredded, fortification with banana blossoms can be developed as functional food such as preventing gout arthritis. The aims of this study were to develop a diversified product of tuna-shredded fortified banana blossoms and to determine the antioxidant activity in vitro and anti-arthritis gout through inhibition of the xanthine oxidase (XO) enzyme in silico. The method used was a simple, completely randomized design. The formulation of tuna-shredded used fortification and active compounds analyzed by LC-HRMS. The antioxidant activity was analyzed by the DPPH. Inhibition of the XO enzyme was analyzed by molecular docking in silico. The results showed that tuna-shredded extract contained 32 compounds, which had total phenolic was 0.00134 mg GAE/g, total flavonoid was 0.0006670 mg QE/g, and IC50 was 4.38 ppm. Ferulic acid had the potential to inhibit the XO enzyme with binding affinity was -9.70 kcal/mol through hydrogen bonds and hydrophobic interactions.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42590502","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}
M. Ananda, Fathan Aditya Sanjaya, Tami Bachrurozy, Helmi Majid Ar Rasyid, A. Barlian, A. H. Aimon, F. Qulub, P. Widiyanti, A. Wibowo
Silver nanoparticles (AgNPs) are fascinating materials for biomedical applications thanks to their strong antibacterial activity and biocompatibility. This study applied the green synthesis method using 0.5 wt.% Seminyak leaf extract and assisted with one min microwave irradiation to enhance AgNPs formation. Extremely small sizes AgNPs with an average particle size of 9.1 ± 4.1 nm and spherical shapes were obtained. The synthesized AgNPs displayed potent antibacterial activity against Escherichia coli and Staphylococcus aureus bacteria with a zone of inhibition of 12.3 ± 0.1 and 13.7 ± 0.7 mm, respectively. The MTT assay results demonstrated that the cells’ viability of the obtained AgNPs was 88.5 ± 7.0 %, implying biocompatibility for biomedical applications.
{"title":"Fast Microwave-Assisted Green Synthesis of Silver Nanoparticles Using Low Concentration of Seminyak (Champeria sp.) Leaf Extract","authors":"M. Ananda, Fathan Aditya Sanjaya, Tami Bachrurozy, Helmi Majid Ar Rasyid, A. Barlian, A. H. Aimon, F. Qulub, P. Widiyanti, A. Wibowo","doi":"10.22146/ijc.78545","DOIUrl":"https://doi.org/10.22146/ijc.78545","url":null,"abstract":"Silver nanoparticles (AgNPs) are fascinating materials for biomedical applications thanks to their strong antibacterial activity and biocompatibility. This study applied the green synthesis method using 0.5 wt.% Seminyak leaf extract and assisted with one min microwave irradiation to enhance AgNPs formation. Extremely small sizes AgNPs with an average particle size of 9.1 ± 4.1 nm and spherical shapes were obtained. The synthesized AgNPs displayed potent antibacterial activity against Escherichia coli and Staphylococcus aureus bacteria with a zone of inhibition of 12.3 ± 0.1 and 13.7 ± 0.7 mm, respectively. The MTT assay results demonstrated that the cells’ viability of the obtained AgNPs was 88.5 ± 7.0 %, implying biocompatibility for biomedical applications.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43479161","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}
This study aimed to investigate the effect of soft template variations on Zinc Sulfate Hydrate (Gunningite) synthesis and the maximum adsorption capacity of ibuprofen. This study employed the soft template method and hydrothermal at 100 °C, followed by calcination at 550 °C. Here, ZnSO4 heptahydrate was used as the precursor for different templates. XRD analysis exhibited that the crystal sizes of Gunningite-F127G, Gunningite-F127, Gunningite-P123G, Gunningite-P123, and Gunningite-G were 18.35; 25.33; 25.67; 27.30; and 24.24 nm with crystallinity degrees of 36.89; 42.62; 46.83; 41.27; and 40.62%, respectively. FTIR examination indicated that the five samples contained functional groups of OH stretching at 3170 cm–1, Zn-O-Zn at 1637 cm–1, Zn-S=O symmetric and asymmetric at 900 and 1056 cm–1, and Zn-O at 521 cm–1. Furthermore, SEM-EDX investigation revealed that the morphology of all Gunningite samples was inhomogeneous due to agglomeration. Besides that, the elemental compositions in the samples were dominated by Zn and O elements. The maximum adsorption capacity obtained from each sample was 221.1 mg/g (Gunningite-F127G); 226.06 mg/g (Gunningite-F127); 234.23 mg/g (Gunningite-P123G); 229.76 mg/g (Gunningite-P123); and 222.85 mg/g (Gunningite-G). Moreover, the Gunningite kinetic model of ibuprofen adsorption followed Ho and McKay's pseudo-second-order kinetic model.
{"title":"Comparative Study of Soft Template on Gunningite Synthesis for Ibuprofen Adsorption Application","authors":"M. Ulfa, Windi Apriliani","doi":"10.22146/ijc.79098","DOIUrl":"https://doi.org/10.22146/ijc.79098","url":null,"abstract":"This study aimed to investigate the effect of soft template variations on Zinc Sulfate Hydrate (Gunningite) synthesis and the maximum adsorption capacity of ibuprofen. This study employed the soft template method and hydrothermal at 100 °C, followed by calcination at 550 °C. Here, ZnSO4 heptahydrate was used as the precursor for different templates. XRD analysis exhibited that the crystal sizes of Gunningite-F127G, Gunningite-F127, Gunningite-P123G, Gunningite-P123, and Gunningite-G were 18.35; 25.33; 25.67; 27.30; and 24.24 nm with crystallinity degrees of 36.89; 42.62; 46.83; 41.27; and 40.62%, respectively. FTIR examination indicated that the five samples contained functional groups of OH stretching at 3170 cm–1, Zn-O-Zn at 1637 cm–1, Zn-S=O symmetric and asymmetric at 900 and 1056 cm–1, and Zn-O at 521 cm–1. Furthermore, SEM-EDX investigation revealed that the morphology of all Gunningite samples was inhomogeneous due to agglomeration. Besides that, the elemental compositions in the samples were dominated by Zn and O elements. The maximum adsorption capacity obtained from each sample was 221.1 mg/g (Gunningite-F127G); 226.06 mg/g (Gunningite-F127); 234.23 mg/g (Gunningite-P123G); 229.76 mg/g (Gunningite-P123); and 222.85 mg/g (Gunningite-G). Moreover, the Gunningite kinetic model of ibuprofen adsorption followed Ho and McKay's pseudo-second-order kinetic model.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46522348","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}
T. Windarti, N. Prasetya, N. Ngadiwiyana, L. Nulandaya
A composite of hydroxyapatite modified silica (HASiO2) and 10% (w/w) polyeugenol (PE) was synthesized to produce a calcium phosphate cement with antibacterial activity. The compatibility of the composite (HASiO2_PE) with bone filler requirements was determined due to its crystal, surface, antibacterial, and cytocompatibility properties. The results showed that compositing HASiO2 and PE did not affect HA's chemical dan crystal properties. The presence of PE changed HASiO2 morphology to be coarser and denser than before composited. PE tends to agglomerate but does not affect the hydrophilicity of HASiO2. The presence of PE increased the surface area and total pore volume but lowered the average pore size. Different from pure PE, the composite of HASiO2_PE that contains of 10% PE has higher antibacterial activity toward Escherichia coli than Staphylococcus aureus. The composite is biocompatible because the cytotoxicity test toward pre-osteoblast cells resulted in an IC50 of 2092 μg/mL. Thus, due to its chemical, surface, antibacterial, and cytocompatibility properties, the HASiO2_PE composite can be recommended as a bone filler material.
{"title":"Calcium Phosphate Cement Composed of Hydroxyapatite Modified Silica and Polyeugenol as a Bone Filler Material","authors":"T. Windarti, N. Prasetya, N. Ngadiwiyana, L. Nulandaya","doi":"10.22146/ijc.80298","DOIUrl":"https://doi.org/10.22146/ijc.80298","url":null,"abstract":"A composite of hydroxyapatite modified silica (HASiO2) and 10% (w/w) polyeugenol (PE) was synthesized to produce a calcium phosphate cement with antibacterial activity. The compatibility of the composite (HASiO2_PE) with bone filler requirements was determined due to its crystal, surface, antibacterial, and cytocompatibility properties. The results showed that compositing HASiO2 and PE did not affect HA's chemical dan crystal properties. The presence of PE changed HASiO2 morphology to be coarser and denser than before composited. PE tends to agglomerate but does not affect the hydrophilicity of HASiO2. The presence of PE increased the surface area and total pore volume but lowered the average pore size. Different from pure PE, the composite of HASiO2_PE that contains of 10% PE has higher antibacterial activity toward Escherichia coli than Staphylococcus aureus. The composite is biocompatible because the cytotoxicity test toward pre-osteoblast cells resulted in an IC50 of 2092 μg/mL. Thus, due to its chemical, surface, antibacterial, and cytocompatibility properties, the HASiO2_PE composite can be recommended as a bone filler material.","PeriodicalId":13515,"journal":{"name":"Indonesian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42529711","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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