在果汁加工过程中食源性病原体的交叉污染
Isma Neggazi1, Pilar Colás-Medà1, Inmaculada Viñas1
1Postharvest Biology and Technology Unit, Department of Food Technology, Engineering and Science, University of Lleida, AGROTECNIO-CERCA Center, Av. Rovira Roure 191, 25198 Lleida, Spain.
没有消毒的果汁会给食品带来安全风险. 这项研究发现病原体从切割板和手套转移到产品,特别是甜菜,不同果汁的存活率也不同.
科学领域:
- 食品微生物学
- 食品安全问题
- 病原体转移的动态
背景情况:
- 越来越多的未经巴氏杀菌的果汁增加了食物传播疾病的风险.
- 在产品处理和果汁加工过程中可能发生病原体污染.
研究的目的:
- 评估病原体从与食物接触的表面转移到产品中.
- 评估病原体在不同果汁类型中的生存和转移.
主要方法:
- 从表面 (切割板,刀具,手套) 转移 * Salmonella enterica *, * Escherichia coli * O157: H7 和 * Listeria monocytogenes * 来进行生产.
- 评估了甜菜,草和果汁中的病原体转移和生存动力学.
主要成果:
- 切割板和手套的病原体传输率高于刀具.
- 在测试的产品中,甜菜的病原体转移率最高.
- 甜菜汁支持细菌的生存, 而草汁显示最快的微生物减少.
结论:
- 从表面到产品的污染是果汁加工中的重大风险.
- 生产类型和果汁矩阵影响病原体的生存.
- 提高卫生实践对于未经消毒的果汁安全至关重要.
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