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脱氧雪腐镰刀菌烯醇(DON)降解菌Devosia sp. A8和Paracoccus yeei A9的生理生化及生长特性

文献类型: 中文期刊

作者: 王燕霞 1 ; 王刚 1 ; 王宇 2 ; 戴亦军 2 ; 史建荣 1 ; 江凌 3 ; 徐剑宏 1 ;

作者机构: 1.江苏省农业科学院农产品质量安全与营养研究所农业农村部农产品质量安全控制技术与标准重点实验室江苏省现代粮食流通与安全协同创新中心

2.南京师范大学生命科学学院江苏省微生物与功能基因组学重点实验室江苏省微生物资源产业化工程技术研究中心

3.南京工业大学食品与轻工学院

关键词: Devosia sp. A8;Paracoccus yeei A9;deoxynivalenol;人工混菌

期刊名称: 生物加工过程

ISSN: 1672-3678

年卷期: 2023 年 002 期

页码: 191-197

收录情况: CSCD

摘要: 由菌株A8和A9组成的人工混菌能够有效地降解脱氧雪腐镰刀菌烯醇(DON)毒素。为了对双菌降解系统进行深入了解,对这2株菌进行严格的生理生化试验,并通过单因素设计,探究不同培养条件(时间、培养基、温度、pH、NaCl质量浓度、抗生素及摇床转速)对其生长状况的影响。通过生理生化试验,进一步确认了菌株A8和A9分别为Devosia sp.和Paracoccus yeei。生长特性研究结果表明:Devosia sp. A8最适宜生长的培养基为多价蛋白胨-酵母粉(PY)培养基,最适pH为8.0,最适培养温度为30℃,最适NaCl质量浓度为5 g/L;而P.yeei A9的最适培养基则为超优肉汤(SOC)培养基,最适pH为7.0~8.0,最适培养温度为35℃,最适NaCl质量浓度为2 g/L。Devosia sp. A8和P.yeei A9的培养条件较为温和,为以后大规模发酵生产以开发DON降解菌剂或酶制剂提供了有利条件。

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