World Chemical Engineering Journal最新文献_第3页

THE EFFECT OF NAOH CATALYST RATIO ON MANUFACTURING BIODISEL FROM OFFGRADE CPO 氢氧化钠催化剂配比对改性聚丙烯腈生产生物柴油的影响

World Chemical Engineering Journal Pub Date : 2020-12-20 DOI: 10.48181/WCEJ.V4I2.10595

R. Hartono

{"title":"THE EFFECT OF NAOH CATALYST RATIO ON MANUFACTURING BIODISEL FROM OFFGRADE CPO","authors":"R. Hartono","doi":"10.48181/WCEJ.V4I2.10595","DOIUrl":"https://doi.org/10.48181/WCEJ.V4I2.10595","url":null,"abstract":"Biodiesel is a type of alternative diesel fuel derived from plant oils or animal fats produced through the transesterification process. Previous biodiesel studies have stated that esterification reactions are carried out when the content of free fatty acids in vegetable oil raw materials is greater than 2%. If the content of free fatty acids is smaller than 2% then the process of transesterification reaction is carried out. The research aims to find out the optimum operating conditions of biodiesel manufacturing with low grade CPO raw materials using the esterification and transesterification process. The research began with the analysis of low grade CPO raw materials, then carried out the esterification process with the H 2 SO 4 catalyst and continued the transesterification process with NaOH catalyst. Fixed variables in the study were oil volume, 1% of H 2 SO 4 catalyst, mole ratio of oil and methanol 1:6, reaction time and reaction temperature of 60 o C. The fixed variables in the study were NaOH catalyst ratios in the transesterification process of 0.5%, 1% and 1.5%. The oil obtained is analyzed the content of free fatty acids, density, viscosity, and water content. The results of the study obtained the physical and chemical properties of low grade CPO, namely water content 0.042% and free fatty acids 49.03. Optimum operating conditions are obtained with a catalyst ratio of NaOH of 1% with a methyl ester yield of 60.80%. The resulting methyl ester has a viscosity value of 5,381 cSt, a density of 870 kg/m 3 , an acidic content of 0.11 and a water content of 0.028.","PeriodicalId":313477,"journal":{"name":"World Chemical Engineering Journal","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121711769","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

Application of Edible Film based on Chitosan-PLA in the Prolongation of the Shelf Life of Longan Fruit 壳聚糖-聚乳酸食用膜在延长桂圆果保质期中的应用

World Chemical Engineering Journal Pub Date : 2020-12-12 DOI: 10.48181/WCEJ.V4I2.10596

N. Kanani

引用次数: 0

Study of Esterification Reaction Between Ethanol and Acetic Acid Using Homogeneous and Heterogeneous Catalyst 均相和非均相催化剂下乙醇与乙酸酯化反应的研究

World Chemical Engineering Journal Pub Date : 2020-12-01 DOI: 10.48181/WCEJ.V4I2.8952

N. Nuryoto

引用次数: 1

Emerging Trends in the Development of Chitosan Films for Active Food Packaging 壳聚糖活性食品包装膜的发展趋势

World Chemical Engineering Journal Pub Date : 2020-10-17 DOI: 10.48181/WCEJ.V4I2.10594

D. Barleany

{"title":"Emerging Trends in the Development of Chitosan Films for Active Food Packaging","authors":"D. Barleany","doi":"10.48181/WCEJ.V4I2.10594","DOIUrl":"https://doi.org/10.48181/WCEJ.V4I2.10594","url":null,"abstract":"The demand for healthy and safe foods with the minimum use of synthetic materials is increasing very rapidly. Plastic polymers have negative effects on the environment, and great efforts have been made to evaluate the use of various bio-based polymers as alternatives to synthetic plastic packaging. Chitin and chitosan are mostly extracted from crustacean shells or byproducts from processing and handling fish and seafood. As a result, chitosan as a material for food packaging has received much attention and is widely researched because it has unique biological and functional properties. Chitosan for food packaging and food preservation applications can be applied via the method of spraying, immersing, coating, or wrapping films. However, chitosan has several disadvantages including low mechanical properties and high sensitivity to moisture, which are the main limitations for its industrial applications, including food packaging. In this study, the scientific literature of the last 5 years on chitosan-based films for their potential application in the food packaging industry has been extensively reviewed. This review also discussed various strategies that have been implemented to improve the properties of chitosan film, including using plasticizers and cross-linking agents, filling them with nanoparticles, fibers and whiskers and combining them with natural extracts and essential oils as well as with other natural and synthetic ingredients.","PeriodicalId":313477,"journal":{"name":"World Chemical Engineering Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122088823","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

In Silico Study and Bioactivity of Flavonoid Extract Syzygium polyanthum (Wight) Walp. Leaves Against Salmonella typhi 多花参黄酮提取物的体外研究及生物活性研究。叶子抗伤寒沙门氏菌

World Chemical Engineering Journal Pub Date : 2020-08-16 DOI: 10.48181/WCEJ.V4I2.10593

Agus Rochmat

{"title":"In Silico Study and Bioactivity of Flavonoid Extract Syzygium polyanthum (Wight) Walp. Leaves Against Salmonella typhi","authors":"Agus Rochmat","doi":"10.48181/WCEJ.V4I2.10593","DOIUrl":"https://doi.org/10.48181/WCEJ.V4I2.10593","url":null,"abstract":"Salmonella typhi bacteria cause complications of bleeding in the intestine or intestinal perforation. However, Salmonella typhi bacteria will become resistant to chloramphenicol due to the formation of plasmids that produce the chloramphenicol acetyl transferase (CAT) enzyme which works to activate chloramphenicol. So, the search for active groups of natural compounds which are expected to have the work of deactivating the CAT enzyme. One of them is a flavonoid compound. The flavonoid group is widely used as an antimicrobial. This research was aimed at the extraction of bay leaf flavonoids. The presence of flavonoids was proven by phytochemical tests, namely a yellow color change with a slightly acidic amyl alcohol solvent - Mg metal and strengthened by the scanning results of the maximum wavelength on the band 1 407 nm and band 2 338 nm which is a special feature of flavonoid backbone. The results of GC-MS analysis obtained 4 flavonoid compounds from bay leaf extract which have an abundance above 1% and qualification above 90%: 2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one, alpha- tocopherol, beta-tocopherol, and pyragallol. The correlation between the results of the inhibitory test against Salmonella typhi at a concentration of 100 ppm with the results of docking tocopherol - 3CLA receptors which have an affinity bond energy / ∆G binding = 7.40 kcal / mol, indicates that the bay leaf flavonoid extract can inhibit the formation of chloramphenicol acetyl transferase (CAT).","PeriodicalId":313477,"journal":{"name":"World Chemical Engineering Journal","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130204249","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