熱震與冷震影響一些食源性病原菌對消毒劑之敏感性

Heat and Cold shock Affect the Susceptibility of Various Food-borne Pathogens to Sanitizers

林孟璇(Meng-Hsuan Lin)

指導教授 ： 周正俊

國立臺灣大學/生物資源暨農學院/食品科技研究所/碩士(2010年)

https://doi.org/10.6342/NTU.2010.00442

摘要

本研究乃試圖了解不同食源性病原菌包括Vibrio parahaemolyticus、Salmonella Typhimurium及Listeria monocytogenes經過熱震與冷震之次致死壓力處理後，於後續暴露在氯消毒劑Clidox-S® 及四級銨消毒劑Quatricide® 中之存活情形。
結果顯示，熱震處理可顯著地 (p < 0.05) 提升V. parahaemolyticus與L. monocytogenes對Clidox-S® 及Quatricide® 之耐受性，然而卻降低了Sal. Typhimurium對這些消毒劑之耐受性。在另一方面經過冷震處理後之V. parahaemolyticus、Sal. Typhimurium及L. monocytogenes菌體暴露於Clidox-S®及Quatricide®之耐受性亦顯著提高 (p < 0.05)，而在40oC下，Clidox-S® 及Quatricide® 對所試病原菌呈現之抗菌效果均比在25oC下強。

關鍵字

Vibrio parahaemolyticus ； Salmonella Typhimurium ； Listeria monocytogenes ； 熱震 ； 冷震 ； 消毒劑

並列摘要

This study was conducted to investigate the effct of heat shock and cold shock on the susceptibility of various food-borne pathogens such as Vibrio parahaemolyticus, Salmonella Typhimurium and Listera monocytogenes to sanitizers including Clidox-S® and Quatricide®.
It was found that heat shock treatment significantly (p < 0.05) increased the tolerance of V. parahaemolyticus and L. monocytogenes to Clidox-S® and Quatricide®, while reduced the tolerance of Sal. Typhimurium to these sanitizers. On the other hand, a significantly (p < 0.05) increased tolerance to Clidox-S® and Quatricide® was noted with cells of V. parahaemolyticus, Sal. Typhimurium and L. monocytogenes after exposure to cold shock treatment. Additionally, Clidox-S® and Quatricide® exhibited a higher antibacterial activity against the pathogens examined at 40oC that at 25oC.

並列關鍵字

Vibrio parahaemolyticus ； Salmonella Typhimurium ； Listeria monocytogenes ； Heat shock ； Cold shock ； Sanitizers

參考文獻

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