Production of cello-oligosaccharides from corncob residue by degradation-synthesis reactions

文献类型： 外文期刊

第一作者： Liang, Yazhe

作者： Liang, Yazhe;Sun, Xianhua;Hao, Zhenzhen;Wang, Xiaolu;Wang, Yuan;Bai, Yingguo;Qin, Xing;Luo, Huiying;Yao, Bin;Su, Xiaoyun;Huang, Huoqing;Ji, Wangli;Zhang, Wei

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关键词： Corncob residue; Cello-oligosaccharides; Cellulase; Phosphorylase; Growth promoter

期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：4.3； 五年影响因子：5.1 ）

ISSN： 0175-7598

年卷期： 2024 年 108 卷 1 期

页码：

收录情况： SCI

摘要： The cellulose-rich corncob residue (CCR) is an abundant and renewable agricultural biomass that has been under-exploited. In this study, two strategies were compared for their ability to transform CCR into cello-oligosaccharides (COS). The first strategy employed the use of endo-glucanases. Although selected endo-glucanases from GH9, GH12, GH45, and GH131 could release COS with degrees of polymerization from 2 to 4, the degrading efficiency was low. For the second strategy, first, CCR was efficiently depolymerized to glucose and cellobiose using the cellulase from Trichoderma reesei. Then, using these simple sugars and sucrose as the starting materials, phosphorylases from different microorganisms were combined to generate COS to a level up to 100.3 g/L with different patterns and degrees of polymerization. Using tomato as a model plant, the representative COS obtained from BaSP (a sucrose phosphorylase from Bifidobacterium adolescens), CuCbP (a cellobiose phosphorylase from Cellulomonas uda), and CcCdP (a cellodextrin phosphorylase from Clostridium cellulosi) were shown to be able to promote plant growth. The current study pointed to an approach to make use of CCR for production of the value-added COS.

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