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Peracetic Acid Sanitation on Arugula Microgreens Contaminated with Surface-Attached and Internalized Tulane Virus and Rotavirus
Food and Environmental Virology ( IF 3.4 ) Pub Date : 2021-04-19 , DOI: 10.1007/s12560-021-09473-1
Miyu Fuzawa 1 , Jinglin Duan 1 , Joanna L Shisler 2, 3 , Thanh H Nguyen 1, 3
Affiliation  

Hydroponic production of vegetables is becoming more common, especially in regions with unfavorable climate for year-round crop production. However, if viruses are present in the hydroponics feed water, then there is a chance that infectious viruses will be internalized into the tissues of hydroponically grown vegetables. When this happens, surface sanitization of postharvest vegetables may not be effective because the sanitizer cannot disinfect the internalized viruses. In this study, we determined if the effectiveness of peracetic acid (PAA), a sanitizer used in the vegetable industry, is affected by the location of viruses (produce surface or interior tissue) in microgreen arugula. Either internally or externally contaminated hydroponically grown microgreen arugula was then treated with PAA at either 30 or 80 ppm for up to 3 min. The PAA disinfection efficacy was higher when the RV was on the arugula surface (approximately 5-log10 in PFU after 3 min of exposure), instead of the arugula interior (1.5-log10 in PFU after 3 min of exposure). However, PAA disinfection efficacy of TV was not dependent on the virus location in arugula. For both internalized TV and RV, the disinfection efficacy was less than 2-log10 in PFU using all the tested PAA concentrations and exposure times examined here. Thus, both the type and location of virus in fresh vegetables may influence the virus disinfection of postharvest vegetables. Therefore, the optimization of sanitation for postharvest fresh vegetables is needed to reduce foodborne viral infection risks.



中文翻译:

表面附着和内化杜兰病毒和轮状病毒污染的芝麻菜微绿植物的过氧乙酸卫生

蔬菜的水培生产正变得越来越普遍,特别是在气候不利于全年作物生产的地区。然而,如果水培给水中存在病毒,那么传染性病毒就有可能被内化到水培蔬菜的组织中。发生这种情况时,采后蔬菜的表面消毒可能无效,因为消毒剂无法对内化的病毒进行消毒。在这项研究中,我们确定了过氧乙酸 (PAA)(一种用于蔬菜工业的消毒剂)的有效性是否受病毒在微绿芝麻菜中的位置(产生表面或内部组织)的影响。然后用 30 或 80 ppm 的 PAA 处理内部或外部污染的水培生长的微绿芝麻菜长达 3 分钟。暴露 3 分钟后 PFU 中为10),而不是芝麻菜内部(暴露 3 分钟后 PFU 中为 1.5-log 10)。然而,TV 的 PAA 消毒效果不依赖于芝麻菜中的病毒位置。对于内化 TV 和 RV,使用此处检查的所有测试的 PAA 浓度和暴露时间,PFU 中的消毒效果均小于 2-log 10。因此,新鲜蔬菜中病毒的类型和位置都可能影响采后蔬菜的病毒消毒。因此,需要优化采后新鲜蔬菜的卫生设施,以降低食源性病毒感染风险。

更新日期:2021-04-19
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