数字农科院2.0

Production Pectin Oligosaccharides Using Humicola Insolens Y1-Derived Unusual Pectate Lyase

文献类型： 外文期刊

作者： Wang, ZY; Xu, B; Luo, HY; Meng, K; Wang, Y; Liu, MT; Bai, YG; Yao, B; Tu, T

作者机构：

关键词： Humicola Insolens Y1; Pectate Lyase; Heterologous Expression; Apple Peel; Pectin Oligosaccharide

期刊名称： JOURNAL OF BIOSCIENCE AND BIOENGINEERING

ISSN： 1389-1723

年卷期： 2020 年 129 卷 1 期

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： The economical production of pectin oligosaccharides with a specific degree of polymerization and structure from agro-food waste is an industrially important process. This study identified a novel pectate lyase gene (plhy1) from the thermophilic cellulolytic fungus H. insolens Y1 and tested its ability to produce pectin oligosaccharides. The recombinant PLHY1 produced in Pichia pastoris was superior to other similar enzymes due to its high thermal and pH stability. PLHY1 demonstrated optimal enzymatic activity at 55 degrees C and pH 10.0 in the presence of 0.4 mM Ca2+, and preferred methyl esterified substrates for digestion. High performance anion exchange chromatography-pulsed amperometric detector and ultra high performance liquid chromatography in combination with electrospray ionization tandem mass spectrometry analysis showed that galacturonic acid-oligosaccharides with a small degree of polymerization (4-6) were the major hydrolysates produced by the degradation of apple peel pectin by PLHY1. The properties of PLHY1 make it valuable for application in the agro-food industry for the production of pectin oligosaccharides. (C) 2019, The Society for Biotechnology, Japan. All rights reserved.

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