Degradation of raw corn stover powder (RCSP) by an enriched microbial consortium and its community structure

Title
Degradation of raw corn stover powder (RCSP) by an enriched microbial consortium and its community structure
Authors
Yujie FengYanling YuXin WangYoupeng QuDongmei LiWeihua He김병홍
Keywords
Lignocellulosic biomass degradation; Microbial consortium; Enrichment; Raw corn stover
Issue Date
2011-01
Publisher
Bioresource technology
Citation
VOL 102, NO 2, 742-747
Abstract
A microbial consortium with a high cellulolytic activity was enriched to degrade raw corn stover powder (RCSP). This consortium degraded more than 51% of non-sterilized RCSP or 81% of non-sterilized filter paper within 8 days at 40 ℃ under facultative anoxic conditions. Cellulosome-like structures were observed in scanning electron micrographs (SEM) of RCSP degradation residue. The high cellulolytic activity was maintained during 40 subcultures in a medium containing cellulosic substrate. Small ribosomal gene sequence analyses showed the consortium contains uncultured and cultured bacteria with or without cellulolytic activities. Among these bacteria, some are anaerobic others aerobic. Analyses of the culture filtrate showed a typical anoxic polysaccharide fermentation during the culturing process. Reducing sugar concentration increased at early stage followed by various fermentation products that were consumed at the late stage.
URI
http://pubs.kist.re.kr/handle/201004/39399
ISSN
0960-8524
Appears in Collections:
KIST Publication > Article
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