Efficacy of a Citric Acid-based Organic Sanitizer against Salmonella enterica and Background Microflora on Fresh-cut Celery and Leeks.

IF 2.6 3区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

Journal of Food Science and Technology-mysore Pub Date : 2016-02-11 DOI:10.25177/jfst.1.2.1

S. Ravishankar, Libin Zhu

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引用次数: 4

Abstract

The efficacy of a citric acid-based organic sanitizer (organic Chico WashTM) against Salmonella enterica serovar Newport and background microflora on fresh-cut celery and leeks was investigated. Three concentrations (1:10, 1:20 and 1:40) of Chico Wash were used. For evaluating the efficacy against background microflora, fresh-cut celery or leeks were treated with sanitizers without an initial wash. For evaluating the efficacy against Salmonella, fresh-cut produce samples were initially washed and dip inoculated with 10 7 CFU/ml S. Newport. Samples were immersed in the sanitizer solutions for 2 min. Samples were taken for enumeration of survivors immediately after treatment and after storage at 4oC for 1, 3 and 6 days. Compared to controls washed in water at day 6, Chico Wash reduced Salmonella and background microflora by 0.7-1.5 and 1.2-2.6 log CFU/g, respectively. All three concentrations of Chico Wash showed 0.2- 1.1 log additional reductions in Salmonella population compared to 200 ppm chlorine. At day 6, background microflora population on celery and leeks were 1-1.7 and 1.5-2.2 logs lower, respectively, than that on chlorine treated samples. The results showed that Chico Wash could potentially serve as an alternative for chlorine sanitizer to wash produce.

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柠檬酸有机消毒剂对鲜切芹菜和韭菜肠道沙门氏菌和本底菌群的防治效果。

研究了柠檬酸基有机消毒剂(organic Chico WashTM)对新鲜切芹菜和韭菜的肠道沙门氏菌血清型和本底菌群的杀灭效果。使用三种浓度(1:10,1:20和1:40)的Chico Wash。为了评估对背景菌群的功效，用消毒剂处理新鲜切好的芹菜或韭菜，而不进行初始清洗。为了评估对沙门氏菌的杀灭效果，对新鲜农产品样品进行初步清洗，并用10.7 CFU/ml S. Newport浸渍接种。样品在消毒液溶液中浸泡2分钟。处理后立即取样，在4℃下保存1、3和6天后进行幸存者计数。与第6天在水中洗涤的对照组相比，Chico Wash分别减少了0.7-1.5和1.2-2.6 log CFU/g沙门氏菌和背景菌群。所有三种浓度的Chico Wash与200 ppm氯相比，沙门氏菌数量减少了0.2- 1.1个对数。第6天，芹菜和韭菜的背景菌群数量分别比氯处理低1 ~ 1.7 log和1.5 ~ 2.2 log。结果表明，Chico Wash可以作为氯消毒剂的替代品来清洗农产品。

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来源期刊

Journal of Food Science and Technology-mysore 工程技术-食品科技

CiteScore

7.70

自引率

0.00%

发文量

274

审稿时长

11 months

期刊介绍： The Journal of Food Science and Technology (JFST) is the official publication of the Association of Food Scientists and Technologists of India (AFSTI). This monthly publishes peer-reviewed research papers and reviews in all branches of science, technology, packaging and engineering of foods and food products. Special emphasis is given to fundamental and applied research findings that have potential for enhancing product quality, extend shelf life of fresh and processed food products and improve process efficiency. Critical reviews on new perspectives in food handling and processing, innovative and emerging technologies and trends and future research in food products and food industry byproducts are also welcome. The journal also publishes book reviews relevant to all aspects of food science, technology and engineering.