Indonesian Journal of Pure and Applied Chemistry最新文献_第8页

PENGARUH PENAMBAHAN JENIS DAN KONSENTRASI PLASTICIZER TERHADAP KUALITAS BIOPLASTIK BERBASIS SELULOSA DARI TANDAN KOSONG KELAPA SAWIT 油棕一簇空棕榈油中纤维素基生物塑料质量的增加和浓度的影响

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-10-09 DOI: 10.26418/indonesian.v2i2.36901

Cindy Andahera, Isni Sholikhah, D. Islamiati, M. D. Pusfitasari

{"title":"PENGARUH PENAMBAHAN JENIS DAN KONSENTRASI PLASTICIZER TERHADAP KUALITAS BIOPLASTIK BERBASIS SELULOSA DARI TANDAN KOSONG KELAPA SAWIT","authors":"Cindy Andahera, Isni Sholikhah, D. Islamiati, M. D. Pusfitasari","doi":"10.26418/indonesian.v2i2.36901","DOIUrl":"https://doi.org/10.26418/indonesian.v2i2.36901","url":null,"abstract":"Plastic is a material that commonly used in daily activities. The increasing of using plastic can increase the amount of plastic waste that can give a negative impact on environment. One effort to solve the problem is by replacing plastic material with a material that convenient degraded by soil, that’s called bioplastic. Bioplastic has a biodegradable characteristic and it is 67% compostable. One of the raw material to producing bioplastic is cellulose. Cellulose can be found in non-food plants such as woods, because most of them contain 40-45% cellulose. Oil palm is the one of the plants which is the cellulose taken by utilize oil palm empty fruit bunch. On the other hand, plasticizer must be added for producing bioplastic to make plastic has elastic characteristic. Sorbitol, Glycerol, Oleic Acid are types of plasticizer. In this research, bioplastic is producing by using solution casting method by addition of plasticizer. With these methods indicates that by using sorbitol as plasticizer is more suitable than glycerol and oleic acid. By using 30% v/v sorbitol can get the optimum quality of bioplastic with 58,7% mass reduction using degradation-analysis during 4 days, and maximum attraction which can be detained is 6,27 kPa","PeriodicalId":13554,"journal":{"name":"Indonesian Journal of Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81940836","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

UJI KELARUTAN LOGAM DARI TAILING TIMAH MENGGUNAKAN PELARUT EUTEKTIK BERBASIS KOLIN KLORIDA DAN ASAM p-TOLUENASULFONAT

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-10-09 DOI: 10.26418/indonesian.v2i2.36906

Nimas Ade Kusdayanti, Winda Rahmalia, Thamrin Usman

{"title":"UJI KELARUTAN LOGAM DARI TAILING TIMAH MENGGUNAKAN PELARUT EUTEKTIK BERBASIS KOLIN KLORIDA DAN ASAM p-TOLUENASULFONAT","authors":"Nimas Ade Kusdayanti, Winda Rahmalia, Thamrin Usman","doi":"10.26418/indonesian.v2i2.36906","DOIUrl":"https://doi.org/10.26418/indonesian.v2i2.36906","url":null,"abstract":"Deep eutectic solvents (DES) are defined as combinations of two or three components which are able to establish hydrogen bond interactions with each other to form an eutectic mixture, that have a melting point lower than that of the each individual component. This study aims to determine the characteristics of DES based on choline chloride (ChCl) as quaternary ammonium salts and p-toluenasulfonic acid (PTSA) as hydrogen bond donors and to investigate their selectivity for dissolving metals in tin tailings. Synthesis of DES was carried out by mixing ChCl and PTSA with variations of the mole fraction, then stirring at 80 oC for 15 minutes. Resulted products were characterized their freezing point, density, viscosity, conductivity and functional groups. Mixture with a mole fraction of ChCl 0.6 formed homogeny clear liquid. It has a freezing point of 8 oC, density of 1.207 g/mL, viscosity of 4.663 cP, and conductivity of 182.4 mS/cm. Based on fourier transform infrared (FTIR) analysis, the interaction between ChCl and PTSA was due to the formation of hydrogen bonds between the O atoms of PTSA and the H atoms of ChCl. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) analysis showed the presence of 1962 ppm of Fe metal dissolved in DES. This value was significant greater than the presence of other metals in the DES.","PeriodicalId":13554,"journal":{"name":"Indonesian Journal of Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75280017","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

UJI AKTIVITAS ANTIBAKTERI MINYAK ATSIRI DAUN JERUK SAMBAL (Citrus x hystryx) TERHADAP Escherichia coli DAN Staphylococcus aureus 对辣椒杆菌和葡萄球菌菌油的抗菌活性进行测试

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-10-09 DOI: 10.26418/indonesian.v2i2.36905

Yurisa Yurisa, M. A. Wibowo

引用次数: 0

PENENTUAN STRUKTUR SENYAWA ANTIOKSIDAN LIMONOID DARI BIJI JERUK SAMBAL (Citrus microcarpa Bunge) KALIMANTAN BARAT

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-07-12 DOI: 10.26418/INDONESIAN.V1I3.34193

Setyo Widayanti, R. Rudiyansyah, A. H. Alimuddin

引用次数: 1

SINTESIS DAN STUDI STABILITAS NANOPARTIKEL PERAK TERTUDUNG ASAM SALISILAT 合成和研究银纳米粒子的稳定性

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-07-12 DOI: 10.26418/INDONESIAN.V1I3.34195

R. Ridwan, Gusrizal Gusrizal, N. Nurlina, S. J. Santosa

引用次数: 2

BIOADSORPSI Fe(II) OLEH KULIT BUAH JERUK Citrus nobilis Lour. var microcarpa TERMODIFIKASI Ca(OH)2 Fe(II)配柑橘皮。var microcarpa修改了Ca(OH)2

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-07-12 DOI: 10.26418/INDONESIAN.V1I3.34205

Norvi Fatmawati, T. Usman, Titin Anita Zahara

{"title":"BIOADSORPSI Fe(II) OLEH KULIT BUAH JERUK Citrus nobilis Lour. var microcarpa TERMODIFIKASI Ca(OH)2","authors":"Norvi Fatmawati, T. Usman, Titin Anita Zahara","doi":"10.26418/INDONESIAN.V1I3.34205","DOIUrl":"https://doi.org/10.26418/INDONESIAN.V1I3.34205","url":null,"abstract":"Pontianak peel fruit waste contains pectin, cellulose, and hemicellulose which can be used as heavy metal adsorbents by modifying using Ca(OH)2. The purpose of this study was to determine the physicochemical characteristics of calcium-modified Pontianak Citrus adsorbents (JeP-Oca), determine the maximum capacity of Fe(II) adsorption by JeP-OCa, and JeP-OCa adsorption kinetics. The characteristics of the adsorbent were analyzed using the Fourier Transformation Infra Red (FTIR) showing the functional groups of –OH and -COOH, Electron Scanning (SEM) Microscopy showing the surface structure of the canal and many irregular niches. The adsorption isotherm method with the BET model showed a large difference in porous surface area, namely 104.872 m2/g for JeP, 242.649 m2/g for JeP-ONa and 3759.745 m2/g for JeP-OCa. Optimization of the influence of pH, adsorbent mass, adsorbate concentration, and time using the column method. Adsorption isotherm followed the Freundlich isotherm model with maximum adsorption capacity value of 22.7272 mg/g. Fulfill the pseudo-order 2 reaction kinetics with a rate constant value of 4.097 L/mg. Min. The adsorption application using groundwater resulted in absorption efficiency of 82.99%.","PeriodicalId":13554,"journal":{"name":"Indonesian Journal of Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82901966","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

ADSORPTION OF Pb(II) BY POLYANILINE/SILICA GEL COMPOSITE: KINETICS AND ISOTHERM STUDIES 聚苯胺/硅胶复合材料对铅(II)的吸附:动力学和等温线研究

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-07-12 DOI: 10.26418/INDONESIAN.V1I3.34196

Mas Inda Putrinesia, N. Nurlina, W. Rahmalia

引用次数: 0

SINTESIS, UJI AKTIVITAS ANTIOKSIDAN DAN ANTIKANKER SENYAWA 3′,4′-DIMETHOXY FLAVONOL 合成,抗氧化剂和抗癌化合物活动试验3′,4′-DIMETHOXY FLAVONOL

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-04-30 DOI: 10.26418/indonesian.v2i1.36921

Muhamad Rokim

引用次数: 0

ENKAPSULASI FRAKSI N-HEKSAN DAUN KESUM (Polygonum Minus Huds) TERSALUT Carboxymethylcellulose (CMC) DAN PATI DAN UJI AKTIVITAS ANTIOKSIDAN DENGAN TEKNIK FREEZE DRYING

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-04-30 DOI: 10.26418/indonesian.v2i1.36945

F. Fitriani, M. A. Wibowo, A. Alimuddin

{"title":"ENKAPSULASI FRAKSI N-HEKSAN DAUN KESUM (Polygonum Minus Huds) TERSALUT Carboxymethylcellulose (CMC) DAN PATI DAN UJI AKTIVITAS ANTIOKSIDAN DENGAN TEKNIK FREEZE DRYING","authors":"F. Fitriani, M. A. Wibowo, A. Alimuddin","doi":"10.26418/indonesian.v2i1.36945","DOIUrl":"https://doi.org/10.26418/indonesian.v2i1.36945","url":null,"abstract":"Kesum have a scientific name Polygonum Minus Huds is one of the endemic plants originating from West Borneo. Extracts of kesum leaf is easily damaged and the compounds contained therei are volatile. Therefore it is necessary to take measures to protect the extracts of kesum leaf. One effort that can be made to im exprove the stability of the compounds in the extract is by the process of encapsulation. This process needs to be done so that the leaf extract can last longer so it can be used for various purposes. Encapsulation aims to protect sensitive material components and reduce the degradation of the active compounds in the material. This study aims to determine the effect of mass of core materials on the efficiency of encapsulation and antioxidant activity and the effect of temperature on encapsulation. The results showed that the encapsulated with the mass of core material 10% gave the highest efficiency of 89.7%. The mass of the core material affects the encapsulation efficiency, the less the core material will provide a high value of encapsulation efficiency. Enkapsulates containing n-heksan fractions of 444.53 ppm have a lower value IC50, thus having better antioxidant activity properties. The stability of the encapsulated antioxidant activity performed at room temperature 25◦C at 10% n-hexane fraction yielded 88.36% ihibisi on day 1, 80.90% on day 3, 79.67% on day 6 and 78.04% on day 9. Activity the antioxidant encapsulant on the first day at room temperature 25◦C is better than the third, sixth and ninth days. SEM leaf extract analysis results have uneven spherical particles, no visible fracture or pore holes as large as encapsulation have round particles that are almost as large.","PeriodicalId":13554,"journal":{"name":"Indonesian Journal of Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91204139","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

ISOLATION OF FLAVONOID FROM ANDONG LEAVES (Cordyline fruticosa (L.) A. Chev.) AND ITS ACTIVITY AS COMPLEXOR OF Fe2+ 冬虫夏草(Cordyline fruticosa (L.))中黄酮类化合物的分离答:Chev)。及其作为Fe2+络合物的活性

Indonesian Journal of Pure and Applied Chemistry Pub Date : 2019-04-30 DOI: 10.26418/indonesian.v2i1.36947

Herlinda Djohan, Ari Widiyantoro, A. Shofiyani

{"title":"ISOLATION OF FLAVONOID FROM ANDONG LEAVES (Cordyline fruticosa (L.) A. Chev.) AND ITS ACTIVITY AS COMPLEXOR OF Fe2+","authors":"Herlinda Djohan, Ari Widiyantoro, A. Shofiyani","doi":"10.26418/indonesian.v2i1.36947","DOIUrl":"https://doi.org/10.26418/indonesian.v2i1.36947","url":null,"abstract":"Flavonoid is one of the phenolic compounds that can complex metals. One of the native plants of Indonesia which has the potential as a metal complexor is the andong plant (Cordyline fruticosa (L.) A.Chev). The isolation process to obtain pure compound are extraction, fractionation, and separation by chromatography. Chromatography method using vacuum liquid chromatography (VLC), gravity column chromatography (GCC) and preparative thin layer chromatography (TLC). This research obtained relatively pure isolate F2.8. The IR (KBr) data on wave numbers of isolate F2.8 were 3430; 2925-2855; 1749; 1609-1512; 1171 and 1100 cm-1.The result of the spectrum 1H-NMR showed flavonoid compound has similar typical spectrum of apigenin compound which showed chemical shift (δH ppm) : 6.85 (1H, s, H-3); 6.29 (1H, s H-6); 6.57 (1H, H-8); 7.03 (2H, d, J = 11.96 Hz, H-3’, H-5’); 8.03 (2H, d, J = 11.72 Hz, H-2’, H-6’). The UV-Vis (CH3OH) spectrum data of isolate F2.8 after the addition of Fe2+ showed a shift at λmax towards a greater direction with a batochromic shift which was caused a decrease in absorbance after the addition of iron (Fe2+) 20 ppm namely: 290 nm; 305 nm with respectively absorbances of 1.62 A; 0.42 A. Based on these data, isolate F2.8 is apigenin which is capable of complexing Fe2+.","PeriodicalId":13554,"journal":{"name":"Indonesian Journal of Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84992805","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