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植物牛奶替代品中的微生物生长,生存和冷耐受性:对Listeria monocytogenes进行的一项研究
1Department of Gene and Cell Therapy, Mediterranean (Akdeniz) University, Antalya, Turkey.
Foodborne pathogens and disease
|December 11, 2024
概括
李斯特菌在植物性牛奶和牛奶中同样生长,但其在冷和解后的存活率各不相同,特别是在杏仁和大豆奶中. 这凸显了牛奶替代品的食品安全问题.
科学领域:
- 食品微生物学 食品微生物学
- 食品安全 食品安全
- 乳制品科学 乳制品科学
背景情况:
- 植物性牛奶替代品越来越受欢迎,与传统牛奶相比,它们的安全性受到质疑.
- 了解这些新型产品中Listeria monocytogenes等食源性病原体的行为对于公共卫生至关重要.
- 李斯特菌 (Listeria monocytogenes) 是食品工业中令人担忧的重要病原体.
研究的目的:
- 研究Listeria monocytogenes在各种植物性牛奶替代品中的生长,存活和冷耐受性.
- 为了比较杏仁,麦和大豆奶与牛奶中的Listeria monocytogenes的行为.
- 评估4°C的储存和重复的冷解周期对Listeria monocytogenes活力的影响.
主要方法:
- 使用经过超高温 (UHT) 处理的杏仁,麦,大豆和牛奶样本.
- 在这些牛奶类型中,Listeria monocytogenes菌株 (ATCC 19115和RS1) 在4°C的温度下培养.
- 量化了细菌的生长,生物膜的形成,以及在重复的冷和解周期后的生存.
主要成果:
- 在植物乳和牛奶中,Listeria monocytogenes在4°C时表现出类似的生长率 (p > 0.05).
- 在所有测试的牛奶类型中,Listeria monocytogenes的生物膜形成能力与所有测试的牛奶类型相似.
- 低温耐受性差异很大;与麦和牛奶相比,在杏仁和大豆奶中培养的Listeria monocytogenes在结解周期后的存活率降低 (p < 0.05).
结论:
- 虽然Listeria monocytogenes的生长是相似的,但其结后的生存受植物性牛奶的类型的影响.
- 杏仁和大豆奶似乎会降低Listeria monocytogenes的冷耐受性,这表明对产品稳定性的潜在影响.
- 随着饮食趋势的发展,进一步的研究是必不可少的,以确保植物性牛奶替代品的安全性和稳定性.
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