Current Biotechnology ›› 2026, Vol. 16 ›› Issue (1): 10-17.DOI: 10.19586/j.2095-2341.2025.0070

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Research Progress on Screening of High-yield Xylanase-producing Strains

Jiazeng GAO1,2,3,4(), Yunshu XIAO1,2,3,4, Wenzheng YAN1,2,3,4, Yongli LI1,2,3,4, Zhanying LIU1,2,3,4, Jianhua HU1,2,3,4()   

  1. 1.Key Laboratory of Synthetic Biology,Inner Mongolia Autonomous Region,Hohhot 010051,China
    2.Inner Mongolia Autonomous Region Engineering Research Center for Bio-fermentation Green Manufacturing,Hohhot 010051,China
    3.Engineering Research Center of Inner Mongolia for Green Manufacturing in Bio-fermentation Industry,Hohhot 010051,China
    4.School of Chemical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China
  • Received:2025-06-20 Accepted:2025-11-07 Online:2026-01-25 Published:2026-02-12
  • Contact: Jianhua HU

Abstract:

Xylan, the main component of plant hemicellulose, is a complex pentosan polysaccharide characterized by abundant content, low cost and renewability. However, it suffers from problems such as poor degradability, low utilization rate, and easy causes of resource waste and environmental pollution. Xylanase is the primary enzyme for degrading xylan and boasts great development potential, being widely applied in the industrial, agricultural, pharmaceutical, food and other fields. Microorganisms are the major source of xylanase, and xylanases from different sources vary greatly, yet the common drawback of low enzyme activity exists universally. Therefore, screening high-yield xylanase-producing strains is of great significance for resource recycling. This paper briefly elaborated on the classification and structure of xylanase, the mutagenesis breeding methods of xylanase-producing strains, as well as the cloning and heterologous expression of xylanase genes, and revealed the hydrolysis mechanism of xylanase and its expression in bacterial and fungal expression systems, aiming to provide a reference for the research on xylanase production.

Key words: xylanase, mutagenesis breeding, xylanase activity, heterologous expression, expression system

摘要:

木聚糖作为植物半纤维素的主要成分,是一种复杂的多聚五碳糖,具有含量丰富、廉价和可再生等特点,但其存在难降解、被利用率低、易造成资源浪费和环境污染等问题。木聚糖酶是降解木聚糖的主要酶类,具有极大的发展潜力,广泛应用于工业、农业、医药、食品等领域。微生物是木聚糖酶的主要来源,不同来源的木聚糖酶也存在着较大差异,但是普遍存在酶活力低下的问题,因此筛选高产木聚糖酶菌株对资源的再利用具有重要意义。简述了木聚糖酶的分类与结构、木聚糖酶菌株的诱变选育方法及木聚糖酶基因的克隆和异源表达,揭示了木聚糖酶的水解机理及其在细菌和真菌表达系统中的表达,以期为木聚糖酶的生产研究提供参考。

关键词: 木聚糖酶, 诱变育种, 木聚糖酶活力, 异源表达, 表达系统

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