Simultaneous saccharification and ethanol fermentation of sago starch using immobilized Zymomonas mobilis

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Title
Simultaneous saccharification and ethanol fermentation of sago starch using immobilized Zymomonas mobilis
Author(s)
G M Lee; Chul Ho Kim; K J Lee; Z A M Yusof; Moon Hi Han; Sang Ki Rhee
Bibliographic Citation
Journal of Fermentation Bioengineering, vol. 64, no. 4, pp. 293-297
Publication Year
1986
Abstract
Simultaneous saccharification and ethanol fermentation (SSF) of sago starch using amyloglucosidase (AMG) and immobilized Zymomonas mobilis ZM4 on sodium alginate was studied. The immobilized Zymomonas cells were more thermo-stable than free Zymomonas cells in this system. The optimum temperature in the SSF system was 40°C, and 0.5% (v/w) AMG concentration was adopted for the economical operation of the system. The final ethanol concentration obtained was 68.3 g/l and the ethanol yield, Yp/s, was 0.49 g/g (96% of the theoretical yield). After 6 cycles of reuse at 40°C with 15% sago starch hydrolysate, the immobilized Z. mobilis retained about 50% of its ethanol fermenting ability.
ISSN
0385-6380
Publisher
Soc Bioscience Bioengineering Japan
DOI
http://dx.doi.org/10.1016/0385-6380(86)90121-4
Type
Article
Appears in Collections:
Jeonbuk Branch Institute > Microbial Biotechnology Research Center > 1. Journal Articles
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