School of Industrial Technology, Universiti Sains Malaysia, Minden, 11800 Penang, Malaysia.
Bioresour Technol. 2012 Jul;116:536-9. doi: 10.1016/j.biortech.2012.04.025. Epub 2012 Apr 19.
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.
生物乙醇的重要性目前已经大大增加，因为它可以减少交通运输部门对化石燃料（尤其是汽油）的总依赖。在这项研究中，引入吉贝（木棉纤维）作为生物乙醇生产的新资源。化学成分分析的结果表明，纤维素（α-和β-）含量为 50.7%。纤维中的葡萄糖含量为 59.8%。高葡萄糖含量表明木棉纤维是生物乙醇生产的潜在底物。然而，如果不进行预处理，木棉纤维通过酶水解仅产生 0.8%的还原糖。因此，在水解之前有必要对木棉纤维进行预处理。考虑到环保性，仅考虑了使用最少的化学物质或能源的简单预处理。有趣的是，仅仅采用水、酸和碱预处理，还原糖的产率分别提高到 39.1%、85.2%和>100%。
