Bioconversion of sugarcane biomass into ethanol: an overview about composition, pretreatment methods, detoxification of hydrolysates, enzymatic saccharification, and ethanol fermentation.
Bioconversion of sugarcane biomass into ethanol: an overview about composition, pretreatment methods, detoxification of hydrolysates, enzymatic saccharification, and ethanol fermentation.
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DOI：
10.1155/2012/989572
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发表时间：
2012
影响因子：
--
通讯作者：
da Silva SS
中科院分区：
文献类型：
--
作者：
Canilha L;Kumar Chandel A;dos Santos Milessi TS;Fernandes Antunes FA;da Costa Freitas WL;das Graças Almeida Felipe M;da Silva SS
化石燃料供应的枯竭、汽油价格的定期上涨以及环境的破坏使得必须寻找经济和生态良性的汽油替代品。乙醇是从基于食物/饲料的基质（谷物、糖和糖蜜）中生产的，由于燃料、食物、饲料和其他需求的增加，其作为能源的应用似乎不适合长期使用。这些问题迫使人们探索具有成本竞争力和可持续供应生物燃料的替代手段。甘蔗渣、甘蔗渣（SB）和稻草（SS）可能是生产第二代（2G）乙醇的理想原料。这些原材料富含碳水化合物，可再生，不会与食品/饲料需求竞争。然而，SB/SS的有效生物转化（有效的预处理技术、纤维素的解聚和释放的糖的发酵）仍然是商业化纤维素乙醇的挑战。在技术挑战中，稳健的预处理和高效生物转化过程的开发（涉及转化戊糖和己糖的合适的乙醇生产菌株）具有关键作用。本文综述了甘蔗渣中SB和SS的组成、甘蔗生物质的预处理方法、甘蔗渣水解液的脱毒方法、甘蔗渣的酶解以及甘蔗渣发酵生产乙醇的研究进展。
Depleted supplies of fossil fuel, regular price hikes of gasoline, and environmental damage have necessitated the search for economic and eco-benign alternative of gasoline. Ethanol is produced from food/feed-based substrates (grains, sugars, and molasses), and its application as an energy source does not seem fit for long term due to the increasing fuel, food, feed, and other needs. These concerns have enforced to explore the alternative means of cost competitive and sustainable supply of biofuel. Sugarcane residues, sugarcane bagasse (SB), and straw (SS) could be the ideal feedstock for the second-generation (2G) ethanol production. These raw materials are rich in carbohydrates and renewable and do not compete with food/feed demands. However, the efficient bioconversion of SB/SS (efficient pretreatment technology, depolymerization of cellulose, and fermentation of released sugars) remains challenging to commercialize the cellulosic ethanol. Among the technological challenges, robust pretreatment and development of efficient bioconversion process (implicating suitable ethanol producing strains converting pentose and hexose sugars) have a key role to play. This paper aims to review the compositional profile of SB and SS, pretreatment methods of cane biomass, detoxification methods for the purification of hydrolysates, enzymatic hydrolysis, and the fermentation of released sugars for ethanol production.
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6.3
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