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鼠伤寒沙门氏菌和金黄色葡萄球菌在不同盐浓度的热那亚萨拉米香肠中的存活情况。

Survival of Salmonella typhimurium and Staphylococcus aureus in Genoa salami of varying salt concentration.

作者信息

Messier S, Smith H J, Tittiger F

机构信息

Agriculture Canada, Laboratoire d'hygiène vétérinaire, Saint-Hyacinthe, Québec.

出版信息

Can J Vet Res. 1989 Jan;53(1):84-6.

Abstract

Genoa salami prepared using three different salt concentrations (2.0, 2.75 and 3.3%) were inoculated with 2.0 x 10(3) and 1.1 x 10(3) bacteria/g of Salmonella typhimurium and Staphylococcus aureus respectively. Over a period of 74 days samples were taken and analyzed for water activity and pH, counts of S. aureus and presence of Salmonella. After 11 days of dry-curing Salmonella could no longer be detected by preenrichment followed by selective enrichment procedures. Viable S. aureus were still found after 74 days of dry-curing. The results of this study would suggest that water activity and pH measurements are useful in evaluating the safety of dry-cured products.

摘要

使用三种不同盐浓度(2.0%、2.75%和3.3%)制备的热那亚萨拉米香肠,分别接种了每克2.0×10³和1.1×10³的鼠伤寒沙门氏菌和金黄色葡萄球菌。在74天的时间里,采集样本并分析其水分活度、pH值、金黄色葡萄球菌计数和沙门氏菌的存在情况。干腌11天后,通过预富集然后选择性富集程序无法再检测到沙门氏菌。干腌74天后仍能发现存活的金黄色葡萄球菌。本研究结果表明,水分活度和pH值测量对于评估干腌产品的安全性很有用。

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