Cold plasma is a promising nonthermal technology for the decontamination and preservation of fresh and fresh-cut produce. The rapid action of a cocktail of reactive oxygen and nitrogen species in plasma against a variety of food spoilage and pathogenic organisms make it a suitable decontamination intervention. This study evaluates the effectiveness of high voltage atmospheric cold plasma in reducing the natural microflora of carrots treated at 60, 80, and 100 kV (60 Hz frequency) for 1, 2, 3, 4, and 5 min. About 2 log 10 CFU/g reduction in the population of both, total aerobic mesophiles, and yeast and mold was observed in carrot discs treated at 100 kV for 5 min (~250 W power). The changes in pH, colour, texture, and total carotenoids of cold plasma treated carrots were minor. For shelf-life evaluation of plasma treated cut-carrots voltages between 80 to 100 kV and treatment times between 4 to 5 min is recommended, such that reduction in spoilage microflora and qualit...

中文翻译：

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鲜切胡萝卜的包装内冷血浆去污：微生物和质量方面

冷等离子体是一种有前途的非热技术，用于对新鲜和鲜切农产品进行去污和保存。血浆中活性氧和氮的混合物对多种食物变质和病原生物的快速作用使其成为一种合适的去污干预措施。这项研究评估了高压大气冷等离子体在减少60、80和100 kV（60 Hz频率）1、2、3、4和5分钟处理的胡萝卜的天然菌群方面的有效性。在100 kV处理5分钟（〜250 W功率）的胡萝卜盘中，总有氧嗜温菌，酵母和霉菌的种群均减少了约2 log 10 CFU / g。经冷等离子体处理的胡萝卜的pH，颜色，质地和总类胡萝卜素的变化很小。