Effectiveness of edible coatings to inhibit browning and inactivate foodborne pathogens on fresh‐cut apples,Journal of Food Safety

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Effectiveness of edible coatings to inhibit browning and inactivate foodborne pathogens on fresh‐cut apples
Journal of Food Safety ( IF 1.9 ) Pub Date : 2020-04-06 , DOI: 10.1111/jfs.12802
Tony Z. Jin ₁ , Wenxuan Chen ₂ , Joshua B. Gurtler ₁ , Xuetong Fan ₁

Affiliation

Multiple formulations of edible coating solutions were developed and evaluated for their ability to maintain the quality and minimize populations of foodborne bacteria on fresh‐cut apples. Fresh‐cut apples were artificially inoculated with Salmonella spp., Escherichia coli O157:H7, and Listeria monocytogenes, and dip‐treated with coating solutions. Changes in populations of pathogens and molds and yeasts (M&Y) were evaluated after solution treatments and during storage at 4°C for 35 days. Changes in color, texture firmness, and weight loss during storage were also determined. Among the formulations, the solution containing 1% of three organic acids (acetic, lactic, and levulinic acids), 2% N‐acetyl‐l‐cysteine or L‐cysteine with 0.5% chitosan demonstrated the best effectiveness for the simultaneous reduction of pathogenic and spoilage microorganisms, control of browning, and maintenance of the quality of fresh‐cut apples. The treated apple slices had nondetectable pathogens and M&Y (<1 log CFU) and the least quality changes for 35‐day storage. The developed solutions can be used at processing plants, retail stores, or homes to protect fresh‐cut apples or other fresh‐cut fruits and vegetables from microbiological and quality deterioration.

中文翻译：

食用涂料可有效抑制鲜切苹果上的褐变和灭活食源性病原体

开发了多种可食用涂料溶液配方，并对其保持质量和最大程度减少鲜切苹果上食源性细菌数量的能力进行了评估。将鲜切苹果人工接种沙门氏菌，大肠杆菌O157：H7和单核细胞增生李斯特菌，并用涂料溶液浸涂。固溶处理后以及在4°C下存放35天期间，评估了病原体，霉菌和酵母菌（M＆Y）种群的变化。还确定了存储过程中颜色，质地紧实度和重量减轻的变化。在这些制剂中，含有1％的三种有机酸（乙酸，乳酸和乙酰丙酸），2％的N-乙酰基-1-半胱氨酸或L-半胱氨酸和0.5％的壳聚糖的溶液证明了同时减少病原体的最佳功效。和变质的微生物，控制褐变，并保持鲜切苹果的质量。处理过的苹果片具有不可检测的病原体和M＆Y（<1 log CFU），并且在35天的存储中质量变化最小。开发的解决方案可用于加工厂，零售店，

更新日期：2020-04-06

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