发布求助
文献互助 智能选刊 最新文献

Indonesian Journal of Chemical Science and Technology (IJCST)最新文献

筛选
英文 中文
Effect of Different Retanning Agents on Shrinkage Temperature of Leathers 不同复鞣剂对皮革收缩温度的影响
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-07-31 DOI: 10.24114/ijcst.v6i2.49365
Beena Zehra, Uzma Nadeem, S. Ismail, B. Solangi, Mohammad Kashif Pervez
{"title":"Effect of Different Retanning Agents on Shrinkage Temperature of Leathers","authors":"Beena Zehra, Uzma Nadeem, S. Ismail, B. Solangi, Mohammad Kashif Pervez","doi":"10.24114/ijcst.v6i2.49365","DOIUrl":"https://doi.org/10.24114/ijcst.v6i2.49365","url":null,"abstract":"Retanning of tanned leathers played an important role to raise the shrinkage temperature characteristic and quantum of retanning agents, where crosslinks are formed with the polypeptide chain of the collagen or other reactive available sites of the collagen. This study is useful for the tanners to determine the percentage of shrinkage by using different retannages. The results revealed that the maximum thermal stability (increase in shrinkage temperature 21-25%) has been found in the basic chromium sulphate retanned leather without destruction of physical properties. Beside this, other types of retannages i-e, mineral retanning, phenolic based retanning, formalin based syntan have been showed thermal stability upto different levels (increase in shrinkage temperature 4-6%,12-15%, 10- 14% respectively) in addition to the development of physical properties such as tensile strength (N/ mm2 ), tear strength (N/mm), fullness , etc. to suit different needs.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89945580","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
Effectiveness Test of the Antibacterial Activity of Endophytic Fungi RS-2 from Sambiloto (Andrographis paniculata) on Red Rice Media 穿心莲内生真菌RS-2在红米培养基上的抑菌效果试验
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43181
Luqiyatur Rohmah, Suryelita Suryelita, Riga Riga, M. Ulfah
{"title":"Effectiveness Test of the Antibacterial Activity of Endophytic Fungi RS-2 from Sambiloto (Andrographis paniculata) on Red Rice Media","authors":"Luqiyatur Rohmah, Suryelita Suryelita, Riga Riga, M. Ulfah","doi":"10.24114/ijcst.v6i1.43181","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43181","url":null,"abstract":"A. paniculata (Sambiloto) is a plant capable of producing various secondary metabolites which use in the field of pharmacology, one of which is as a source of antibacterial compounds. This potential can be explored from endophytic fungi associated with A. paniculata. The purpose was to determine the effectiveness of the antibacterial activity of the endophytic fungi RS-2 from branches of A. paniculata using red rice as the media. The stages of the research included isolation of the fungi, cultivation, extraction, antibacterial test, and test of the phytochemical of the endophytic fungi on branches of A. paniculata. The effectiveness test of antibacterial activity against the extract of the RS-2 endophytic fungi showed that the endophytic fungi extract had the potential to inhibit the growth of the three tested bacteria at concentrations of 10%, 30%, and 50%. The ethyl acetate extract of the endophytic fungi RS-2 from A. paniculata has the potential as a source of antibacterial compounds using red rice media.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73400620","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
Effect Of Biomass Dosage on Biosorption Malachite Green Using Immobilized Langsat Shell (Lansium Domesticum Corr) 生物质投加量对固定化Langsat壳吸附孔雀石绿的影响
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43177
Niswatul Inayah, D. Kurniawati
{"title":"Effect Of Biomass Dosage on Biosorption Malachite Green Using Immobilized Langsat Shell (Lansium Domesticum Corr)","authors":"Niswatul Inayah, D. Kurniawati","doi":"10.24114/ijcst.v6i1.43177","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43177","url":null,"abstract":"Malachite green dye waste is one of the wastes that is genotoxic and carcinogenic to humans. Biosorption is an effective process for the removal and recovery of Malachite green dye waste from aqueous solutions. In this study, the biomass used was a langsat shell which had been immobilized with sodium silicate. The obtained biosorbents were characterized using Fourier Transform Infra-Red (FTIR). In this research, we determine the effect of biomass dosage on biosorption Malachite green using the column method. The results showed that the optimum conditions for absorption occurred at biomass dosage 2 gram . The maximum biosorption efficiency of 96,85%","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88152194","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
Bibliometric Analysis on Scholarly Journals of PVA Hydrogel Membrane Using VOSviewers Software 用vosviewer软件对PVA水凝胶膜学术期刊进行文献计量分析
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43182
Virni Grace Irene Damanik, A. Nandiyanto
{"title":"Bibliometric Analysis on Scholarly Journals of PVA Hydrogel Membrane Using VOSviewers Software","authors":"Virni Grace Irene Damanik, A. Nandiyanto","doi":"10.24114/ijcst.v6i1.43182","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43182","url":null,"abstract":"The development of technology in this world is already developing rapidly. One of the advanced technologies that support research planning is bibliometrics. This study aims to analyze the scope of research on PVA Hydrogel Membrane using VOSviewer using bibliometric review with a mapping process to ensure that the research to be carried out has never been studied and knows the relationship of each related item. The three processes underlying the search use the keywords \"chemistry, particle, PVA, and Hydrogel\" namely title, abstract, and keyword. The research database is taken from google scholar. A total of 98 articles are relevant and meet the criteria. The results show that most of the studies were conducted in the 2012-2022 range. PVA and Hydrogel are so closely related to each other that they have a fairly bright density visualization. Some items are not related to the PVA Hydrogel Membrane but these items are interconnected with other items so it can be concluded that there are still many items that can be used for further research.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74417100","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
Determination Of Total Flavonoid Content Of Bajakah Tampala And Kalalawit Roots Using The Reflux 回流法测定坦巴拉根和卡拉维根总黄酮含量
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43183
Sasi Yuni Kirana, Rizki Febrianti, Wilda Amananti
{"title":"Determination Of Total Flavonoid Content Of Bajakah Tampala And Kalalawit Roots Using The Reflux","authors":"Sasi Yuni Kirana, Rizki Febrianti, Wilda Amananti","doi":"10.24114/ijcst.v6i1.43183","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43183","url":null,"abstract":"Bajakah is one of the plants found in the forest around Muara Badak. Bajakah root contains flavonoids which have potential as natural ingredients that have medicinal properties. Currently, there are two types of bajakah root on the market, namely tampala and kalalawit. This study aims to determine the content and total flavonoid content of the extract of the Bajakah root from the two types of Bajakah root. The research procedure was initiated by the process of extracting the roots of the Bajakah root using the reflux method using 96% ethanol. The reflux extraction results are then carried out by an evaporation process to obtain a thick extract. The second step is to test the flavone content through a color test. And the quantitative test for determining total flavonoid levels was carried out by UV-Vis Spectrophotometry. Based on the results of a qualitative test using a color reaction, it shows that the roots of the kalalawit and tampala bajakar contain flavonoids. Where the total flavonoid content in the roots of Bajakah Tampala was 59.38% and in Bajakah Kalalawi roots was 47.14%.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89850977","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
A Review: Immunomodulator Effects of Plants Extract on Rats with Haematological Parameter include White Blood Count and Differential Leucocytes Count 植物提取物对大鼠血液学指标包括白细胞计数和差异白细胞计数的免疫调节作用综述
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43185
Rafika Hayu Pratiwi, T. Juwitaningsih
{"title":"A Review: Immunomodulator Effects of Plants Extract on Rats with Haematological Parameter include White Blood Count and Differential Leucocytes Count","authors":"Rafika Hayu Pratiwi, T. Juwitaningsih","doi":"10.24114/ijcst.v6i1.43185","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43185","url":null,"abstract":"Plants extract as immunomodulatory is substance which can stimulates or suppresses the component of immune system including white blood count and differential leucocytes count. The modulation of immune system by various plants extract has become subject for scientific investigation currently worldwide. Some of these plants have been claimed to increase immune system by increasing the total white blood count and differential leucocytes count are Achyranthes aspera Linn, Cermai Leaves (Phyllanthus acidus (L.)) Skeels, Moringa oleivera and Poguntano herb (Picriafel-terraeLour).. Plants extract were recommended for us as immunomodulatory because there are several botanical products with potential therapeutic applications such as high efficacy, low cost and low toxicity.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75651157","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
Analysis of The Optical Properties of Ag Nanoparticles With The Assistance of Bioreductors of Saga Leaf Extract (Abrus pecatorius L.) 竹叶提取物生物载体辅助下银纳米粒子光学性质的研究
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43179
Rahma Sofia Putri, A. B. Riyanta, Wilda Amananti
{"title":"Analysis of The Optical Properties of Ag Nanoparticles With The Assistance of Bioreductors of Saga Leaf Extract (Abrus pecatorius L.)","authors":"Rahma Sofia Putri, A. B. Riyanta, Wilda Amananti","doi":"10.24114/ijcst.v6i1.43179","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43179","url":null,"abstract":"Nanotechnology has become an important and interesting field of physics, chemistry, biology and engineering in recent years. The rapidly growing nanotechnology today is nanoparticles. The characteristic characteristic of nanoparticles is that the particle size is very small in the range (1-100 nm). Silver nanoparticles have been synthesized using saga leaf extract (Abrus pecatorius L.) as a reducing agent. The formation of silver nanoparticles was carried out by adding sage leaf extract to the AgNO3 solution and homogenizing using a magnetic stirrer for 60 minutes. UV-Vis spectrophotometer was used to confirm the formation of silver nanoparticles. Test the inhibition of bacteria using the well method. The results showed that the wavelength values were in the range of 375-395nm.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85733134","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
Analysis of Total Flavonoid Content in the Extract of Bajakah Kalalawit Root (Uncaria gambir Roxb) Infunded Results 百加根提取物中总黄酮含量分析
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43184
Nurul Reza Alfani, Rizki Febrianti, Wilda Amananti
{"title":"Analysis of Total Flavonoid Content in the Extract of Bajakah Kalalawit Root (Uncaria gambir Roxb) Infunded Results","authors":"Nurul Reza Alfani, Rizki Febrianti, Wilda Amananti","doi":"10.24114/ijcst.v6i1.43184","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43184","url":null,"abstract":"Bajakah kalalawit is one of the plants that has been empirically used in traditional medicine. The roots of Bajakah kalalawit (Uncaria gambir Roxb) have phenol and antibacterial content and have a high enough content of flavonoid compounds so that they have pharmacological activity as an anticancer. This article examines the content of flavonoid compounds contained in the extract of Bajakah Kalalawi root and also examines the total levels of flavonoids contained in the roots of Bajakah Kalalawi. Bajakah kalalawit root extract was obtained by the infundation extraction method using a water solvent (1:10). Examination of the characteristics of the sample is carried out by macroscopic and microscopic identification. The qualitative test of flavonoids was carried out by color reaction tests in two treatments. Determination of flavonoid levels in the root extract of bajakah kalalawi was carried out by the UV-Vis spectrophotometry method. From the results of the study showed that the levels of flavonoids in the root extract of Bajakah Kalalawi in sample A were 33.2% and in sample B by 44.8%. The results showed that the roots of Bajakah Kalalawi were shown to contain flavonoid compounds.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75535233","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
Electrical Analysis of Fermented Durian Rinds 发酵榴莲皮的电性分析
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43188
Siti Rahmah, A. Nur, Andreta B Hutahuruk, Kurnia Rizki Siregar, Nelsy Theresia Siggalingging, R. Selly
{"title":"Electrical Analysis of Fermented Durian Rinds","authors":"Siti Rahmah, A. Nur, Andreta B Hutahuruk, Kurnia Rizki Siregar, Nelsy Theresia Siggalingging, R. Selly","doi":"10.24114/ijcst.v6i1.43188","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43188","url":null,"abstract":"In this study, Durian rind wastes were fermented using Saccharomyces cerevisiae yeast to break the starch to be smaller sugar molecule. Then, the pH was analyzed using digital pH-meter. The voltage and electric current were analyzed using multimeter. The result showed that the lower the pH value the greater its voltage and its electric current. The pH value influenced by fermentation time. The longer the fermentation time the lower the pH value. The type of microorganism and the composition of durian rind wastes were also affected the pH value. In this study, the fermentation process was set for 24, 48, 72 hours, and the pH value was resulted in the basic range. The highest voltage is 0.094 volt and the highest electric current is 0.058 mA measured in pH 12.3.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77641095","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
Biodegradation Study of Polymer Composites Reinforced by Areca catechu fibers (Areca catechu L.) and Snake plant fibers (Sansevieria Trifasciata) 槟榔纤维与蛇属植物纤维增强聚合物复合材料的生物降解研究
Indonesian Journal of Chemical Science and Technology (IJCST) Pub Date : 2023-02-01 DOI: 10.24114/ijcst.v6i1.43180
Tasya Natalia Lumban Gaol, N. Nurfajriani
{"title":"Biodegradation Study of Polymer Composites Reinforced by Areca catechu fibers (Areca catechu L.) and Snake plant fibers (Sansevieria Trifasciata)","authors":"Tasya Natalia Lumban Gaol, N. Nurfajriani","doi":"10.24114/ijcst.v6i1.43180","DOIUrl":"https://doi.org/10.24114/ijcst.v6i1.43180","url":null,"abstract":"Natural fiber components are used for composite materials because they provide strength to the fibers. Composite materials commonly used are thermoset polymers, one of which is epoxy resin. Biodegradation aims to determine the rate of change in the mass of the specimen after 40 days of burial. The purpose of this study was to determine the effect of the volume fraction of the combination of areca catechu fibers and snake plant fibers on biodegradation properties. The method used in this research is the soil burial test, which is to determine the rate of polymer biodegradation in the soil. The best results in the biodegradation property test obtained the highest mass value of 30% variation obtained after burial for 40 days amounting to 13,417 grams, with the biodegradation test obtained a comparison before and after burial the mass value obtained did not experience a significant increase, this is because the composite material have no pores. or holes for the entry of microorganisms into the soil.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91001654","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信