生物技术通报2024,Vol.40Issue(1) :45-56.DOI:10.13560/j.cnki.biotech.bull.1985.2023-0596

三种主要真菌毒素及其毒素降解酶的研究进展

Research Progress in Three Major Mycotoxins and Their Toxin-degrading Enzymes

向霞 朱恩恒 韩楠玉
生物技术通报2024,Vol.40Issue(1) :45-56.DOI:10.13560/j.cnki.biotech.bull.1985.2023-0596

三种主要真菌毒素及其毒素降解酶的研究进展

Research Progress in Three Major Mycotoxins and Their Toxin-degrading Enzymes

向霞 1朱恩恒 2韩楠玉3
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作者信息

  • 1. 云南师范大学生命科学学院,昆明 650500
  • 2. 生物能源持续开发利用教育部工程研究中心,昆明 650500
  • 3. 云南师范大学生命科学学院,昆明 650500;生物能源持续开发利用教育部工程研究中心,昆明 650500
  • 折叠

摘要

饲料生产贮藏时常被真菌毒素污染,主要包括黄曲霉毒素、玉米赤霉烯酮、呕吐毒素、伏马毒素B1、赭曲霉毒素A和T-2 毒素,真菌毒素会对畜禽造成严重的身体伤害甚至死亡,而真菌毒素的共存将导致更大程度的经济损失.真菌毒素的降解主要包括化学降解法、物理降解法和生物酶解法,而生物酶解法相比于另外两种方法更为环保、高效,因此备受关注.本文对毒性强、污染广的黄曲霉毒素、玉米赤霉烯酮和呕吐毒素的危害机制、降解途径以及相关的真菌毒素降解酶进行详细分析及探讨.利用分子对接等手段揭示了毒素小分子在降解反应中与真菌毒素降解酶的相互作用,并筛选出了降解过程中的关键氨基酸.虽然酶解法在去除真菌毒素方面具有优势,但是由于成本高等原因目前应用仍然受限,急需进一步研究和开发.因此,优化酶解法的工艺和条件,以实现高效、经济地去除真菌毒素将成为未来研究重点.本研究为指导真菌毒素降解酶的设计和优化提供了重要参考.

Abstract

Feed during production and storage is often contaminated with mycotoxins,mainly including aflatoxin,zearalenone,vomitoxin,fumonisin B1,ochratoxin A and T-2 toxins.Mycotoxins cause serious physical injury or even death to livestock and poultry,and the coexistence of mycotoxins will lead to greater economic losses.The degradation of mycotoxins mainly includes chemical degradation,physical degradation and biological enzymatic hydrolysis.Biological enzymatic hydrolysisis more environmentally friendly and efficient than the other two methods,thus it has attracted much attention.In this paper,we analyzed the harmful mechanisms,degradation pathways and related mycotoxin-degrading enzymes of aflatoxin,zearalenone and vomitoxin with strong toxicity and wide pollution in detail.We revealed the interaction between toxin small molecules and mycotoxin-degrading enzymes in degradation reactions by molecular docking and other means,and screened the key amino acids in the degradation process.Although enzymatic hydrolysis possesses advantages in removing mycotoxins,its current application is still limited due to high cost and other reasons,and further research and development are urgently needed.Therefore,optimizing the process and conditions of enzymatic hydrolysis to achieve efficient and cost-effective removal of mycotoxins will be the focus of future research.This study provides an important reference to guide the design and optimization of mycotoxin-degrading enzymes.

关键词

真菌毒素/危害机制/降解途径/毒素降解酶

Key words

mycotoxins/hazard mechanism/degrading pathways/toxin-degrading enzyme

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基金项目

云南省兴滇英才支持计划青年人才项目()

出版年

2024
生物技术通报
中国农业科学院农业信息研究所

生物技术通报

CSTPCDCSCD北大核心
影响因子:0.505
ISSN:1002-5464
被引量1
参考文献量14
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