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Scale‐up model of forced air‐integrated gaseous chlorine dioxide for the decontamination of lowbush blueberries
Journal of Food Safety ( IF 2.4 ) Pub Date : 2020-03-25 , DOI: 10.1111/jfs.12793 Alison Lacombe 1 , Jeremiah G. Antosch 2 , Vivian C. H. Wu 1
Journal of Food Safety ( IF 2.4 ) Pub Date : 2020-03-25 , DOI: 10.1111/jfs.12793 Alison Lacombe 1 , Jeremiah G. Antosch 2 , Vivian C. H. Wu 1
Affiliation
Gaseous chlorine dioxide (ClO2) is a promising sanitizer for frozen products because of its efficacy under nonthermal and waterless conditions. A major knowledge gap exists between laboratory trials and effectiveness at the industrial scale. To address this, a pilot study implementing a pallet‐sized fumigation container (60 harvest totes) was designed for gaseous ClO2. Fifty kilograms of blueberries were exposed to initial dose of 57.46 mg/L, representing a treatment of 2.35 mg/g of blueberries. Blueberries remained enclosed for 10 hr. Reduction of all viable cells, coliforms, yeasts, and molds were measured by plating treated samples on Tryptic Soy Agar, Violet Red Bile Agar, and Dichloran Rose Bengal Chloramphenicol Agar and compared to untreated controls. The results demonstrate that a significant reduction of 1.5 log CFU/g can be achieved against coliforms after ClO2 exposure. Our findings demonstrate a cost‐effective procedure that could be adapted to commercial processing.
中文翻译:
强制空气集成的二氧化氯气对低灌木蓝莓去污的放大模型
气态二氧化氯(ClO 2)由于其在非热和无水条件下的功效而成为一种有前景的冷冻产品消毒剂。在工业规模的实验室试验和有效性之间存在重大知识鸿沟。为了解决这个问题,针对气态ClO 2设计了一个实施了托盘大小的熏蒸容器(60个收获箱)的试点研究。。将五十公斤蓝莓暴露于57.46 mg / L的初始剂量,代表处理量为2.35 mg / g蓝莓。蓝莓保持封闭10小时。通过在胰蛋白酶大豆琼脂,紫罗兰红胆汁琼脂和敌敌畏玫瑰孟加拉氯霉素琼脂上平板接种处理过的样品,测量所有活细胞,大肠菌,酵母和霉菌的减少,并与未处理的对照进行比较。结果表明,暴露于ClO 2后,针对大肠菌群可实现1.5 log CFU / g的显着降低。我们的发现表明,该方法可适用于商业加工,具有成本效益。
更新日期:2020-03-25
中文翻译:
强制空气集成的二氧化氯气对低灌木蓝莓去污的放大模型
气态二氧化氯(ClO 2)由于其在非热和无水条件下的功效而成为一种有前景的冷冻产品消毒剂。在工业规模的实验室试验和有效性之间存在重大知识鸿沟。为了解决这个问题,针对气态ClO 2设计了一个实施了托盘大小的熏蒸容器(60个收获箱)的试点研究。。将五十公斤蓝莓暴露于57.46 mg / L的初始剂量,代表处理量为2.35 mg / g蓝莓。蓝莓保持封闭10小时。通过在胰蛋白酶大豆琼脂,紫罗兰红胆汁琼脂和敌敌畏玫瑰孟加拉氯霉素琼脂上平板接种处理过的样品,测量所有活细胞,大肠菌,酵母和霉菌的减少,并与未处理的对照进行比较。结果表明,暴露于ClO 2后,针对大肠菌群可实现1.5 log CFU / g的显着降低。我们的发现表明,该方法可适用于商业加工,具有成本效益。