Influence of product volume on water antimicrobial efficacy and cross-contamination during retail batch washing of lettuce.
Influence of product volume on water antimicrobial efficacy and cross-contamination during retail batch washing of lettuce.
复制标题
产品体积对生菜零售批量清洗过程中水抗菌功效和交叉污染的影响。
DOI：
10.1016/j.ijfoodmicro.2020.108593
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
K. Matthews
中科院分区：
文献类型：
--
作者：
Jingwen Gao;Hyein Jang;Licheng Huang;K. Matthews
新鲜农产品应在零售层面进行彻底清洗，然后用饮用水供应给消费者。如果食品上存在食源性病原体，可能会转移到洗涤水中，并交叉污染浸入水中的其他产品。通常，整盒生菜（24头）一起清洗，由于每个头之间的紧密接触，增加了交叉污染的可能性。本研究旨在比较两种清洗批次体积-“低”（8头）和“高”（24头）对两种市售水抗菌剂的有效性和交叉污染的影响。将产滋贺毒素大肠杆菌（STEC）和单核细胞增生李斯特菌点接种（~5.0 log CFU/g）红叶生菜。在第一批洗涤中，用未接种的莴苣洗涤接种的莴苣，然后重复使用水/抗微生物剂两次，仅洗涤未接种的莴苣。采集接种和未接种生菜样品，以确定需氧平板计数（APC）以及STEC和L的种群。单核细胞增多症还进行了洗涤水的微生物分析。清洗量（8与24生菜头）对评价的干预措施的抗菌活性的影响有限。相反，高容量洗涤增加了未接种和接种生菜之间的交叉污染率，以及通过洗涤水重复使用的未接种生菜的交叉污染率。考虑到减少潜在的产品交叉污染，RESPONSE应考虑每批处理的产品体积、清洗水的重复使用以及适当的水抗菌剂的使用。
Fresh produce shall be thoroughly washed at the retail level prior to serving to the consumer with potable water. Foodborne pathogens if present on a product may transfer to the wash water and cross-contaminate other products immersed in the water. Typically, an entire carton of lettuce (24 heads) is washed together increasing the likelihood of cross-contamination due to the close contact between each head. This study aimed to compare the effects of two wash batch volumes – “low” (8 heads) and “high” (24 heads) on the efficacy of two commercial water antimicrobials and cross-contamination. Red leaf lettuce was spot-inoculated (~5.0 log CFU/g) with Shiga toxin-producingEscherichia coli(STEC) and Listeria monocytogenes. In the first batch of washing, inoculated lettuce was washed with non-inoculated lettuce, followed by reuse of the water/antimicrobials twice washing only non-inoculated lettuce. Samples of inoculated and non-inoculated lettuce were collected to determine aerobic plate count (APC) as well as the populations of STEC andL. monocytogenes. Microbiological analysis of the wash water was also conducted. Wash volume (8 versus 24 lettuce heads) had limited effects on the antimicrobial activities of the interventions evaluated. Instead, high-volume wash increased the rate of cross-contamination between non-inoculated and inoculated lettuce, and cross-contamination of non-inoculated lettuce through wash water reuse. Retailers should consider volume of product processed per batch, reuse of wash water, and use of an appropriate water antimicrobial in consideration of mitigating potential product cross-contamination.
与长叶生菜相关的产志贺毒素大肠杆菌感染 - 美国，2018 年。
影响因子：
11.8
作者：
L. Bottichio;A. Keaton;Deepam Thomas;Tara Fulton;A. Tiffany;A. Frick;Mia C. Mattioli;A. Kahler;J. Murphy;M. Otto;Adiam T. Tesfai;A. Fields;Kelly E. Kline;Jennifer Fiddner;J. Higa;Amber Barnes;Francine Arroyo;Annabelle Salvatierra;April Holland;Wendy Taylor;J. Nash;B. Morawski;Sarah Correll;Rachel Hinnenkamp;J. Havens;K. Patel;Morgan N. Schroeder;L. Gladney;H. Martin;L. Whitlock;N. Dowell;Corinne Newhart;L. F. Watkins;V. Hill;S. Lance;Stic Harris;M. Wise;I. Williams;C. Basler;L. Gieraltowski
通讯作者：
L. Gieraltowski