期刊
BIORESOURCE TECHNOLOGY
卷 132, 期 -, 页码 383-386出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.11.023
关键词
Saccharification; Non-treated cassava pulp; Cellulosome; Thermophilic beta-glucosidase; Amylolytic enzymes
资金
- Japan International Research Center for Agricultural Sciences (JIRCAS), Japan
- Kasetsart University Research and Development Institute (KURDI), Thailand
Cassava pulp containing 60% starch and 20% cellulose is a promising renewable source for bioethanol. The starch granule was observed to tightly bind cellulose fiber. To achieve an efficient degradation for cassava pulp, saccharification tests without pre-gelatinization treatment were carried out using combination of commercial a-amylase with cellulosome from Clostridium thermocellum S14 and beta-glucosidase (rCglT) from Thermoanaerobacter brockii. The saccharification rate for cassava pulp was shown 59% of dry matter. To obtain maximum saccharification rate, glucoamylase (GA) from C thermocellum S14 was supplemented to the combination. The result showed gradual increase in the saccharification rate to 74% (dry matter). Supplementation of GA to the combination of commercial a-amylase, cellulosome and rCglT is powerful method for efficient saccharification of cassava pulp without pretreatment. (C) 2012 Elsevier Ltd. All rights reserved.
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