期刊
BIORESOURCE TECHNOLOGY
卷 116, 期 -, 页码 536-539出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.04.025
关键词
Enzymatic hydrolysis; Kapok fiber; Pretreatment; Reducing sugar; Second generation bioethanol
资金
- Universiti Sains Malaysia [1001-PTE-KIND/821067]
- Ministry of Higher Education (MOHE), Malaysia
The importance of bioethanol currently has increased tremendously as it can reduce the total dependency on fossil-fuels, especially gasoline, in the transportation sector. In this study, Ceiba pentandra (kapok fiber) was introduced as a new resource for bioethanol production. The results of chemical composition analysis showed that the cellulose (alpha- and beta-) contents were 50.7%. The glucose composition of the fiber was 59.8%. The high glucose content indicated that kapok fiber is a potential substrate for bioethanol production. However, without a pretreatment, the kapok fiber only yielded 0.8% of reducing sugar by enzymatic hydrolysis. Thus, it is necessary to pre-treat the kapok fiber prior to hydrolysis. Taking into account environmentally friendliness, only simple pretreatments with minimum chemical or energy consumption was considered. It was interesting to see that by adopting merely water, acid and alkaline pretreatments, the yield of reducing sugar was increased to 39.1%, 85.2% and >100%, respectively. (C) 2012 Elsevier Ltd. All rights reserved.
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