Applying Both Chemical Liquefaction and Enzymatic Catalysis Can Increase Production of Agaro-Oligosaccharides from Agarose

文献类型： 外文期刊

第一作者： Jiang, Chengcheng

作者： Jiang, Chengcheng;Liu, Zhen;Liu, Jie;Sun, Jianan;Xu, Jiachao;Mao, Xiangzhao;Mao, Xiangzhao;Li, Laihao

作者机构：

关键词： neoagarotetraose; agarose; agarase; marine polysaccharide; expression

期刊名称：JOURNAL OF OCEAN UNIVERSITY OF CHINA （ 影响因子：0.913； 五年影响因子：1.012 ）

ISSN： 1672-5182

年卷期： 2020 年 19 卷 6 期

页码：

收录情况： SCI

摘要： Red algae represents an important marine bioresource. One high-value utilization of red algae is the production of agaro-oligosaccharides which have many positive biological effects. However, the lack of an efficient production route seriously limits the application of agaro-oligosaccharides. In this study, we established a green route that combines chemical liquefaction and enzymatic catalysis for the efficient production of agaro-oligosaccharides, and we used the production of neoagarotetraose (NA4) as an example. Agarose (150 g L-1) liquefaction by citric acid was controlled with respect to two targets: a 100% liquefaction rate and a high average degree of polymerization (> 4) of the liquesced agaro-oligosaccharides, which were then catalyzed by beta-agarase into an oligosaccharides mixture with a high concentration of NA4 (30.8gL(-1)) in a 1-L reaction volume. After purification, we obtained 25.5g of NA4 with a purity of 92%. This work establishes an easy route for the efficient production of pure agaro-oligosaccharides from agarose.

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