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Full-Text Articles in Food Science
Improved Keratinase Production For Feather Degradation By Bacillus Licheniformis Zjuel31410 In Submerged Cultivation, Hui Ni, Qi-He Chen, Feng Chen, Ming-Liang Fu, Ya-Chen Dong, Hui-Nong Cai
Improved Keratinase Production For Feather Degradation By Bacillus Licheniformis Zjuel31410 In Submerged Cultivation, Hui Ni, Qi-He Chen, Feng Chen, Ming-Liang Fu, Ya-Chen Dong, Hui-Nong Cai
Publications
Optimal medium was used to improve the production of keratinase by Bacillus licheniformis ZJUEL31410, which has a promising application in the transformation of feather into soluble protein. The results of single factor design revealed that the concentration of feather at 20 g/l and the initial pH at value 8 was the best for the production of keratinase and the degradation of feather. Ammonia salt and nitrate salt strongly restricted the production of keratinase and the degradation of feather. Result of Box-Behnken design (BBD) experiment which was used to optimize concentrations of glucose, corn steep flour and K2HPO4 …
Biodiesel Production From Crude Cottonseed Oil: An Optimization Process Using Response Surface Methodology, Xiaohu Fan, Xi Wang, Feng Chen
Biodiesel Production From Crude Cottonseed Oil: An Optimization Process Using Response Surface Methodology, Xiaohu Fan, Xi Wang, Feng Chen
Publications
Biodiesel, known as fatty acid methyl ester (FAME), was produced from crude cottonseed oil (triglycerides) by transesterification with methanol in the presence of sodium hydroxide. This process was optimized by applying factorial design and response surface methodology (RSM) with SAS and PSIPLOT programs. A second-order mathematical model was obtained to predict the yield as a function of methanol/oil molar ratio, catalyst concentration, reaction temperature, and rate of mixing. Based on ridge max analysis and RSM, as well as economic cost consideration, the practical optimal condition for the production of biodiesel was found to be: methanol/oil molar ratio, 7.9; temperature, 53 …