文献类型：期刊文献

英文题名：Kinetic analysis of curdlan production by Alcaligenes faecalis with maltose, sucrose, glucose and fructose as carbon sources

作者：Zhang, Qin[1];Sun, Jingyun[1];Wang, Zejian[1];Hang, Haifeng[1];Zhao, Wei[2];Zhuang, Yingping[1];Chu, Ju[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, POB 329,130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shan Dong Fu Yang Biol Technol Co Ltd, Dezhou, Peoples R China

年份：2018

卷号：259

起止页码：319

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000429820300041)】；

基金：This work was financially supported by the National key research and development program 2017YFF0204602 and 2017ZX07402003.

语种：英文

外文关键词：Alcaligenes faecalis; Carbon sources; Curdlan; Kinetics

摘要：Curdlan has wide-ranging benefits in food and pharmaceutical industries for its unique rheological and thermal gelling properties. To analyze the cell growth and curdlan biosynthesis kinetics of Alcaligenes faecalis, the kinetic properties of the curdlan fermentation under different carbon sources conditions (maltose, sucrose, glucose and fructose) were investigated using Logistic and Luedeking-Piret equations. The results demonstrated that curdlan fermentation is partial growth-associated process. With maltose as the sole carbon source, the highest curdlan production (P-m = 39.3 g/L), the maximum specific growth rate (mu(m) = 0.44/h) and the growth-associated rate constant (alpha = 2.05 g curdlan/g cell) were achieved. In contrast, the fructose was the less desired carbon source in both the cell growth and curdlan production. Further, the results demonstrated that slow-releasing glucose from maltose boosted cell growth and curdlan production.