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] State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Shan Dong Fu Yang Biological Technology Co., Ltd, China

年份：2018

卷号：259

起止页码：319

外文期刊名：Bioresource Technology

收录：EI(收录号：20181204934102)

语种：英文

外文关键词：Carbon - Rate constants - Fructose - Sugar (sucrose) - Biochemistry - Glucose - Growth kinetics - Fermentation - Maltose - Cell growth

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 (Pm = 39.3 g/L), the maximum specific growth rate (μm = 0.44/h) and the growth-associated rate constant (α = 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. ? 2018 Elsevier Ltd