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在冷藏期间的中国新鲜牛肉的微生物多样性和社区结构以及它们与淡味的相关性
Zhiping Zhao1, Ziqing Ling1,2, Xin Nie2
1Meat Processing Key Laboratory of Sichuan Province, College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China.
Foods (Basel, Switzerland)
|May 25, 2024
概括
在冷藏期间,中国新鲜牛肉中的微生物群落发生变化,其丰富性下降,但多样性波动. 某些细菌,如乳球菌,可能会导致味道不佳,影响牛肉的保存.
科学领域:
- 食品微生物学 食品微生物学
- 微生物生态学 微生物生态学
- 食品科学 食品科学 食品科学
背景情况:
- 中国新鲜牛肉 (CFB) 的保存对于食品安全和质量至关重要.
- 了解冷藏期间的微生物动态对于防止腐烂和异味至关重要.
研究的目的:
- 在冷藏期间调查CFB中的真菌和细菌群落的多样性和动态.
- 确定关键的微生物参与者和与CFB腐烂和异味生产相关的代谢途径.
主要方法:
- 高通量测序用于分析CFB中存储了0,3,7和10天的微生物群落.
- 用KEGG代谢途径分析和BugSim预测来了解微生物的功能和表型.
- 进行了相关性分析,以将特定的微生物与非风味生产联系起来.
主要成果:
- 微生物丰富度显著下降,而多样性最初下降,然后在冷藏期间增加.
- 阿斯科米科塔和菲尔米库特是占主导地位的类;坎迪达和乳球菌是占主导地位的属.
- 碳水化合物新陈代谢,膜运输和氨基酸新陈代谢是主要的细菌途径;格拉姆阳性细菌是普遍存在的.
- 乳球菌,花菌,蛋白质菌和罗多托鲁拉菌都涉及到非风味的生产.
结论:
- 冷藏会显著改变CFB的微生物组成和动态.
- 像乳球球菌 (Lactococcus) 这样的特定品种在腐烂和味道不佳的发展中发挥着作用.
- 这些发现为改善CFB保存策略提供了理论基础.
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