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The key to ethanol production from lignocellulosic hydrolysates: xylose-fermenting yeasts

机译:木素纤维素水解物生产乙醇的关键:木糖发酵酵母

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Bioconversion of lignocellulose raw materials into ethanol has aroused extensive attention in recent years. High ethanol yields are dependcnt on co-fermentation of hexose and pentose sugars present in lignocellulosic hydrolysates. Unfortunately, the traditional ethanologenic yeast Saccharomyces cerevisiae is unable to utilize xylose and ferment it to ethanol. Hence efforts have been made to construct various recombinant yeasts to improve the ability of xylose fermentation. In this article we briefly review researches on the development of xylose-fermenting yeast strains including microorganisms for xylose fermentation, xylose metabolic pathway, metabolic engineering of S. cerevisiae, protoplast fusion and genome shuffling. Problems existing in current researches and prospects are also discussed.
机译:近年来,将木质纤维素原料的生物转化为木质纤维素原料中的乙醇激烈地引起了广泛的关注。高乙醇产率在木质纤维素水解产物中存在的己糖和戊糖糖的共发酵中。不幸的是,传统的素质酵母糖酵母酿酒酵母不能利用木糖并将其发酵给乙醇。因此,已经努力构建各种重组酵母以改善木糖发酵的能力。在本文中,我们简要介绍了对木糖发酵酵母菌菌株的发展的研究,包括木糖发酵,木糖代谢途径,S.酿酒酵母代谢工程,原生质体融合和基因组洗片的微生物。还讨论了当前研究和前景中存在的问题。

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