4TH INTERNATIONAL SEMINAR ON CHEMISTRY最新文献_第4页

The effect of stirring and fermentation time of coconut cream on the yield and quality of virgin coconut oil (VCO) 椰子奶油搅拌发酵时间对初榨椰子油产率和品质的影响

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0051839

Harmami Harmami, I. Ulfin, D. Kurnia, H. Juwono

引用次数: 1

Synthesis and cytotoxicity of indolin-2-one derivatives against WiDr cells 吲哚-2- 1衍生物的合成及对WiDr细胞的细胞毒性研究

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0051756

A. Fadlan, B. Prayitno, M. R. G. Fahmi, M. Santoso

引用次数: 1

Improvement N2/SF6 separation performance on P84 derived carbon membrane by incorporating of zeolite-carbon composite 添加沸石-碳复合材料改善P84衍生炭膜上N2/SF6分离性能

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0052171

A. R. Widyanto, I. S. Caralin, N. Widiastuti, T. Gunawan, R. Wijiyanti, W. Salleh, A. Ismail, Mikihiro Nomura, Kohei Suzuki

{"title":"Improvement N2/SF6 separation performance on P84 derived carbon membrane by incorporating of zeolite-carbon composite","authors":"A. R. Widyanto, I. S. Caralin, N. Widiastuti, T. Gunawan, R. Wijiyanti, W. Salleh, A. Ismail, Mikihiro Nomura, Kohei Suzuki","doi":"10.1063/5.0052171","DOIUrl":"https://doi.org/10.1063/5.0052171","url":null,"abstract":"SF6 gas is one of the greenhouse gasses which contributed to the global warming effect. Separation of SF6 and N2 was investigated on the P84 and P84/ZCC carbon membrane. Carbon membranes were prepared via pyrolysis process at 700°C under N2 atmosphere. All of the carbon membranes were characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). XRD results show a typical peak of carbon membranes at 2θ∼24° and 41-42° which correspond to the amorphous and aromatic graphite structures, respectively. The scanning electron microscopy image observed that the addition of ZCC filler has been successfully incorporated without producing surface defect on the carbon membrane. The introduction of zeolite-carbon composite particles into the co-polyimide matrix enhanced the selectivity of N2/SF6 by 136.85%. The permeability of N2 has improved by 7.65%. Yet the permeability of SF6 has decreased by 54.55%, which indicated the addition of ZCC filler gives a molecular sieving effect. It concluded that the P84/ZCC carbon membrane shows better N2/SF6 separation performance than the pristine P84 carbon membrane.","PeriodicalId":6833,"journal":{"name":"4TH INTERNATIONAL SEMINAR ON CHEMISTRY","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83175595","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

Physicochemical properties of snakehead (Channa striata) fish protein concentrate extracted by different methods 不同方法提取黑头鱼浓缩蛋白的理化性质

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0051833

D. Ikasari, Mohamad I. N. Wijaya

{"title":"Physicochemical properties of snakehead (Channa striata) fish protein concentrate extracted by different methods","authors":"D. Ikasari, Mohamad I. N. Wijaya","doi":"10.1063/5.0051833","DOIUrl":"https://doi.org/10.1063/5.0051833","url":null,"abstract":"Production of fish protein concentrate (FPC) employing chemical and enzymatic extraction process often resulted in several weaknesses, including high cost, low yield, and reduced nutritional and functional properties of FPC. The present study aims to produce protein concentrate extracted from Snakehead fish (Channa striata) using two different methods, namely heating and combination methods, and to investigate the characteristics of resulted FPC. In the heating method, the cooked meat was mixed with distilled water and heated at 80°C prior centrifugation, drying and grinding into powder. In contrast, in the combination method, the minced meat was treated with combination techniques between washing and acidification. The protein concentrates were analyzed for parameters of yield, proximate value, colour and functional properties, including water absorption capacity, fat absorption capacity, water holding capacity, emulsion activity and emulsion stability. Results showed that the yield of protein concentrate produced from combination and heating methods were 27±0.01% and 21±0.01%, respectively. Combination method produced fish protein concentrate with lower ash and fat contents compared to the heating method. Both methods resulted in fish protein concentrate with light yellow colour; however, fish protein concentrate produced by the combination method demonstrated a higher ability to hold and absorb water which is desirable for food formulation.","PeriodicalId":6833,"journal":{"name":"4TH INTERNATIONAL SEMINAR ON CHEMISTRY","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79573776","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: 2

Adsorption of lithium and calcium using cationic resin for separation application 阳离子树脂吸附锂和钙的分离应用

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0052532

D. Amalia, I. Perdana, C. Purnomo

{"title":"Adsorption of lithium and calcium using cationic resin for separation application","authors":"D. Amalia, I. Perdana, C. Purnomo","doi":"10.1063/5.0052532","DOIUrl":"https://doi.org/10.1063/5.0052532","url":null,"abstract":"Lithium is currently one of the most needed elements due to its main role in Lithium-Ion Batteries (LIBs) and its scarce availability in the world. Spent LIBs become a potential source of Lithium, especially for countries with no resource of Lithium in nature. It is necessary to develop an efficient Lithium recovery process which can produce Lithium compound for further reuse. Lithium can be recovered from LIBs cathode through a hydrometallurgical process, which requires sequential precipitations of components. Calcium is frequently added to the precipitation process, which at the end might disturb the purification of Lithium compound products. This work studied the purification of Lithium from Calcium-containing solution by adsorption. The solution might resemble the leaching solution of spent LIBs cathode. The artificial solution containing 2000 ppm Lithium and 500 ppm Calcium were adsorbed using 0.5 grams of cationic resin for 24 hours at 30, 50 and 70°C, respectively. Experimental results showed that Calcium has a higher affinity against Lithium. The adsorption at 30°C was dominated by Calcium intake of 94.16%, while Lithium was only 18.28%. This result indicates that the adsorption method using cationic resins can be used to selectively separate Lithium from the Calcium-containing solution, which is advantageous for further application in LIBs recycling.","PeriodicalId":6833,"journal":{"name":"4TH INTERNATIONAL SEMINAR ON CHEMISTRY","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75090508","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

Synthesis and characterization of thermosensitive-ionic based gel in various temperatures 不同温度下热敏离子基凝胶的合成与表征

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0051617

E. O. Ningrum, S. Suprapto, A. D. Karisma, E. Agustiani, H. Ni’mah

{"title":"Synthesis and characterization of thermosensitive-ionic based gel in various temperatures","authors":"E. O. Ningrum, S. Suprapto, A. D. Karisma, E. Agustiani, H. Ni’mah","doi":"10.1063/5.0051617","DOIUrl":"https://doi.org/10.1063/5.0051617","url":null,"abstract":"The rapid development of technology in industry produces heavy metals waste which identified as B3 waste, thus management is needed to maintain the ecosystem and life around it. One of the industries which needs B3 waste management is electroplating industry. The acidic effluent from electroplating industrial contains heavy metals like chromium, nickel, and cadmium. Waste containing heavy metals can be regenerated through varied methods, one of them is by utilizing zwitterion betaine gel. However, the weakness of this method is the presence of intra-intra chain association so that the ionic group ability to adsorb the ion is inhibited by the charge group interaction. Therefore, in this research, the intra-intra chain of these gels were minimalized by synthetizing anionic and cationic gel separately using NIPAM-co-Chi and NIPAM-co-AAc copolymer. NIPAM-co-Chi and NIPAM-co-AAc gels were synthetized through polymerization reaction using N,N’-methylenebisacrylamide (MBAA) as the cross linker with NIPAM-co-Chi and NIPAM-co-AAc concentration ratio of 8:2 at various syntesis temperatures. Heavy metal adsorbed simultaneously by the charge group in gel. Several analysis were done to investigate the characteristic of the gel produced, including FTIR, swelling degree, gel morphology through SEM. Based on the FTIR analysis result on NIPAM-co-Chi and NIPAM-co-AAc gels, only a few vinyl group seen on its functional group, so that it can be conclude that the synthesis of the gel copolymer was successfully carried out. The highest swelling degree on NIPAM-co-Chi was at synthesis temperature of 10 °C, while on NIPAM-co-AAc was at synthesis temperature of 30 °C. The lowest swelling degree on NIPAM-co-Chi was at synthesis temperature of 70 °C, while on NIPAM-co-AAc was at synthesis temperature of 70 °C. Furthermore, based on SEM result, porous was found on both gels at synthesis temperatures of 30 °C, 50 °C, and 70 °C.","PeriodicalId":6833,"journal":{"name":"4TH INTERNATIONAL SEMINAR ON CHEMISTRY","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88573107","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

Topical cream optimization and in vitro testing of bromelain nanoemulsion from pineapple core as anti-inflammation agents 菠萝核菠萝蛋白酶纳米乳抗炎外用乳膏优化及体外实验研究

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0052799

Denny J. Pasaribu, S. Setiasih, S. Hudiyono

{"title":"Topical cream optimization and in vitro testing of bromelain nanoemulsion from pineapple core as anti-inflammation agents","authors":"Denny J. Pasaribu, S. Setiasih, S. Hudiyono","doi":"10.1063/5.0052799","DOIUrl":"https://doi.org/10.1063/5.0052799","url":null,"abstract":"Bromelain is a major proteolytic enzyme that existed in pineapple core and is widely known for its rich bioactivities, including anti-inflammatory and anti-bacterial. In this research, the isolation, extraction, and purification of bromelain from pineapple core was successfully performed, followed by the formulation of bromelain nanoemulsion, which ended with the in vitro testing on mouse skin to determine its skin permeability. The bromelain activity was also evaluated in this study, whereas the specific activity was determined at 51.36 U/mg and 68.62 U/mg at pineapple core and crude enzyme fractions, respectively. Moreover, the further fractionation using (NH4)2SO4 was performed and resulted in the specific activities of 118.48 U/mg for fraction 0-50% at 12 hr. In addition, three formulas of bromelain nanoemulsion were created in this study and characterized further using organoleptic and in vitro tests. According to the PSA data, the Formula 3 nanoemulsion, which majorly comprised of Tween 80 and small amounts of lecithin, shown a smaller droplet size at 22.04 nm, which corresponds to its higher penetration rate at 587.56 µg/cm2 in 30 minutes. Moreover, the decreased bromelain proteolytic activity in Formula 3 was not significant compared to the other two formulas. Thus, this optimized bromelain nanoemulsion formula can be studied further to examine its anti-bacterial potency through additional in vitro and in vivo tests.","PeriodicalId":6833,"journal":{"name":"4TH INTERNATIONAL SEMINAR ON CHEMISTRY","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89419321","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

Chemical characteristic of fly ash from 3 Kalimantan’s power plants as potential source for synthesis of aluminosilicate-based material 加里曼丹3个电厂粉煤灰合成铝硅酸盐基材料的化学特性

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0051996

R. M. Iqbal, Elda Alyatikah, E. P. Toepak, R. Rasidah, L. R. Tambunan, Siswo Siswo, H. Fansuri

{"title":"Chemical characteristic of fly ash from 3 Kalimantan’s power plants as potential source for synthesis of aluminosilicate-based material","authors":"R. M. Iqbal, Elda Alyatikah, E. P. Toepak, R. Rasidah, L. R. Tambunan, Siswo Siswo, H. Fansuri","doi":"10.1063/5.0051996","DOIUrl":"https://doi.org/10.1063/5.0051996","url":null,"abstract":"Efforts to fulfill the needs of electricity in Indonesia are still dominated by the use of fossil fuels such as coal in Steam Power Plants. However, the process of burning coal causes various environmental problems, one of which is fly ash. Fly ash is classified as a dangerous and toxic material. Although it is regarded as hazardous material, fly ash contains silica (SiO2) and alumina (Al2O3) which can be used as raw material for synthesis of aluminosilicate-based materials such as geopolymers, zeolites and others. In this study, the chemical composition, SiO2/Al2O3 ratio, and fly ash type will be examined from three different sources of fly ash such as power plants owned by a private company located in the Kapuas area (FA1), Asam-Asam’s (FA2), and PulangPisau’s (FA3) power plant. The chemical composition was tested by ASTM D 3682-13. Based on data, FA1 has the highest SiO2 and Al2O3 composition with a percentage of 56.44% and 31.31%, respectively. FA2 has the highest Fe2O3 composition with a percentage of 23.10% and FA3 has the highest CaO composition with a percentage of 23.46%. The highest SiO2/Al2O3 ratio is 4.61 from FA2, while the lowest SiO2/Al2O3 ratio is 1.80 from FA1. Based on the chemical composition of fly ash, FA1 and FA2 are classified as F type, while FA3 is classified as C type. From these data, it can be concluded that the fly ash from the three power plants still have the potential to be used as source for synthesis of aluminosilicate-based materials.","PeriodicalId":6833,"journal":{"name":"4TH INTERNATIONAL SEMINAR ON CHEMISTRY","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72973933","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

Synthesis of ZIF-67 in the presence of acetic acid as methyl orange adsorbent 以乙酸为甲基橙吸附剂合成ZIF-67

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0052106

D. O. Sulistiono, R. Ediati

引用次数: 0

The combination of natural dyes from jengkol POD waste (Archidendron jiringa) and liquid waste of gambier (Uncaria gambir Roxb) on coloring of cotton fabrics 菊芋废渣天然染料与洋云母废液染料在棉织物上的联合染色

4TH INTERNATIONAL SEMINAR ON CHEMISTRY Pub Date : 2021-06-24 DOI: 10.1063/5.0051819

S. Sofyan, F. Failisnur, S. Silfia

{"title":"The combination of natural dyes from jengkol POD waste (Archidendron jiringa) and liquid waste of gambier (Uncaria gambir Roxb) on coloring of cotton fabrics","authors":"S. Sofyan, F. Failisnur, S. Silfia","doi":"10.1063/5.0051819","DOIUrl":"https://doi.org/10.1063/5.0051819","url":null,"abstract":"Natural colors for textile products are becoming a trend today as an alternative to reducing the usage of synthetic dyes. Jengkol pod waste is a useless resource and is disposed as waste as well as gambier liquid waste which is produced from the pressing process of the gambier leaves. Both of resources contain tannins, which can function as dyes. The use of these two resources as natural dyes is an effort that can increase added value. The research was aimed at color and see the quality of the colored cotton material using a combination of jengkol pod waste and gambier liquid waste. The research was conducted by extracting the dye of the jengkol pod waste and gambier liquid waste, and testing the application of the dye on cotton fabrics. Three types of mordants, namely Al2(SO4)3, CaO, and FeSO4 were used in the coloring process. A treatment without mordant (control) was carried out as a comparison. Cotton fabrics that had been dyed were tested for the quality of their coloring by testing the color coordinate, color strength, and colorfastness. The results indicated that each mordant gave a different color coordinate with brown color in the use of mordant CaO and mordant Al2(SO4)3, and greenish-grey color with mordant FeSO4. The highest color strength was obtained in the use of mordant FeSO4 with K/S value of 11.678. Treatment with mordant CaO was the best treatment for colorfastness of washing, acidic and alkaline perspiration, light, and rubbing with values of 4 to 5, 4 to 5, 3, 4, 4 to 5 respectively.","PeriodicalId":6833,"journal":{"name":"4TH INTERNATIONAL SEMINAR ON CHEMISTRY","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77514699","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