Influence of pH control on the production of curdlan by Alcaligenes faecalis strain.
- Author:
Lei WANG
1
;
Xiao-Bei ZHAN
;
Yi-Hui ZHU
;
Zhen-Yu LI
;
Ye YANG
Author Information
1. Key Laboratory of Industrial Biotechnology of Ministry of Education, Southern Yangtze University, Wuxi 214036, China.
- Publication Type:Journal Article
- MeSH:
Alcaligenes;
growth & development;
metabolism;
Fermentation;
Glucans;
biosynthesis;
Hydrogen-Ion Concentration;
beta-Glucans
- From:
Chinese Journal of Biotechnology
2002;18(5):634-637
- CountryChina
- Language:Chinese
-
Abstract:
A two-stage pH control method was employed in batch fermentation of curdlan by Alcaligenes faecalis WX-C12 where cell-growth stage was constantly controlled at pH 7.0 and stationary stage was controlled at a constant pH as well. The influence of pH control on the curdlan production was investigated. The optimal pH control of batch process for curdlan production was obtained when cell-growth stage was controlled at pH 7.0 and stationary stage was constantly controlled at pH 5.6. Production and productivity of curdlan, QP and YP/S reached 28.19 g/L, 291 mg/(L.h), 132.27 mg/(L.h.g) and 0.659, an improvement of 20.4%, 38.1%, 38.1% and 29.5% compared to a pH uncontrolled operation respectively.
