在制备发酵果仁奶酪类似物时,沙门氏菌的行为
Hanna S Louvau1, Hongye Wang1, Maria M Shaposhnikov1
1Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
Journal of food protection
|June 9, 2024
概括
在没有初始培养的发酵过程中,沙门氏菌种群在果仁奶酪类似物中显著增加. 添加Lactococcus lactis (LAB) 起始培养有助于控制沙门氏菌,强调需要在植物性发酵中采取强有力的安全措施.
科学领域:
- 食品微生物学 食品微生物学
- 食品安全 食品安全
- 发酵科学 发酵科学
背景情况:
- 最近与果仁奶酪类似物相关的沙门氏菌病爆发强调了食品安全方面的担忧.
- 了解植物性发酵中的微生物行为对于防止污染至关重要.
研究的目的:
- 为了评估沙门氏菌在果仁发酵过程中的行为.
- 评估Lactococcus lactis (LAB) 起始培养和添加剂对沙门氏菌种群的影响.
主要方法:
- 沙门氏菌注射的果仁是用或没有LAB,NaCl和酸发酵的.
- 在72小时内监测pH值,有氧板数和沙门氏菌种群.
- 微生物分析使用了M17 agar和CHROMagar Salmonella与里法.
主要成果:
- 与没有LAB相比,LAB的存在显著减少了沙门氏菌种群.
- 在没有LAB的24小时内,沙门氏菌种群增加了5.3-5.5日志CFU/g,而没有LAB的沙门氏菌种群增加了0.5-1.7日志CFU/g.
- LAB显著降低了pH值,有助于微生物控制.
结论:
- 乳球菌乳酸菌的初始培养在果仁发酵期间控制沙门氏菌起着至关重要的作用.
- 有效的控制措施对于植物性发酵产品的安全生产至关重要.
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