针对牛肉腐烂的有针对性的控制:将屠宰源追踪与包装温度障碍相结合,以精确保存
Jiarui Li1, Dequan Zhang2, Ming Tian2
1Institute of Food Science and Technology, Chinese Academy of Agriculture Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Harvest, Storage, Transportation, Management and Control, Ministry of Agriculture and Rural Affairs, Beijing 100193, China; Institute of Western Agriculture, Chinese Academy of Agricultural Sciences, Xinjiang Engineering Technology Research Center for Exploration and Quality Evaluation of Characteristic Agricultural and Livestock Product Resources, Changji 831100, China.
适当的牛肉储存和屠宰场卫生对于防止腐败至关重要. 识别像Pseudomonas和Brochothrix这样的主导腐烂细菌有助于改进肉类保存技术和质量管理.
科学领域:
- 食品微生物学 食品微生物学
- 肉类科学 肉科学
- 微生物生态学 微生物生态学
背景情况:
- 微生物活动在加工和储存期间显著影响牛肉的质量.
- 腐烂微生物是牛肉恶化的关键驱动因素.
研究的目的:
- 在储存期间确定牛肉中占主导地位的腐烂细菌.
- 确定屠宰场中主要的污染源.
- 评估不同储存条件对牛肉质量的影响.
主要方法:
- 牛肉储存实验使用空气包装 (AP),真空包装 (VP) 和在4°C和-1°C下进行21天的修改大气包装 (MAP).
- 16S rRNA基因的高通量测序用于细菌社区分析.
- 对食品腐烂指标的评估.
- 暂时连续的细菌污染源的跟踪.
主要成果:
- 储存条件 (包装和温度) 显著影响了牛肉的质量和腐败率,AP在4°C显示更快的腐败.
- 细菌群体的多样性和结构在关键的破坏时间点上发生了显著的变化.
- 鉴定出 Pseudomonas, Brochothrix, Acinetobacter 和 Serratia 是主导的腐烂细菌,它们起源于脱皮操作,并在尸体四割和修剪过程中通过工人手套传播.
结论:
- 储存条件通过改变最初的微生物生态来影响牛肉质量.
- 在加工前 (屠宰场) 和屠宰后 (储存) 控制污染对于管理腐烂细菌的继承至关重要.
- 这些发现为优化肉类保存技术和质量管理策略提供了基础.
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