Risk assessment of Bacillus cereus in lettuce grown in open-field and greenhouse farming systems in China:A comparative study

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外文摘要：Objectives:Bacillus cereus isolates from vegetables can cause diarrheal syndrome food poisoning.Lettuce,the most highly consumed ready-to-eat vegetable,poses a significant risk of B.cereus exposure.Hence,B.cereus monitoring and evaluation during cultivation are essential for preventing foodborne illnesses caused by this food-pathogen combination.However,the impact of different cultivation practices on B.cereus contamination in lettuce currently remains unclear.Furthermore,a validity indicator for the experimental models cannot be effectively validated under field conditions.Materials and Methods:Herein,we assessed the risk of B.cereus exposure using lettuce grown under two different cultivation farming systems in China(open-field versus greenhouse)using a quantitative microbial risk assessment model.Tukey's mean comparison method and kernel density estimation frequency distribution statistics were used for model validation using environmental samples and lettuce.Results:The mean concentration of B.cereus in open-field-grown lettuce was significantly higher than that in greenhouse-grown lettuce(P＜0.05).No significant differences were observed between measured,formula-calculated,and risk assessment values in environmental sam-ples or lettuce(P＞0.05),verifying the accuracy of the risk model.Conclusion:Soil solarization,complete manure treatment,usage of mulch films,and irrigation water quality should be considered in agricul-tural practices to control B.cereus concentrations in lettuce.Overall,we found that B.cereus was more abundant in open-field-grown lettuce,and we provide a risk evaluation framework that can guide farmers and policy-makers to control B.cereus contamination in farm-to-fork lettuce chains in China.

外文关键词：

Diarrheal syndrome food poisoningready-to-eat vegetablegreenhousemicrobial risk assessment

作者：

Yang Qu、Shenghao Yu、Haotian Gu、Wen Wang、Wenbo Wang、Zhaoying He、Hong Shan、Min Gao、Xin Zhao、Chao Wei、Tingting Tao、Guanghua Zhao、Changyan Zhou、Yujuan Suo

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作者单位：

Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs,Institute for Agro-Food Standards and Testing Technology,Shanghai Academy of Agricultural Sciences,Shanghai,China

Information Application Research Center of Shanghai Municipal Administration for Market Regulation,Shanghai,China

Eco-environmental Protection Research Institute,Shanghai Academy of Agricultural Sciences,Shanghai,China

MOA Laboratory of Quality&Safety Risk Assessment for Agro-products(Hangzhou),Institute of Agro-Product Safety and Nutrition,Zhejiang Academy of Agricultural Sciences,Hangzhou,China

Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs,Institute of Agricultural Standards and Testing Technology for Agri-Products,Shandong Academy of Agricultural Sciences,Jinan,China

Institute of Quality Standard and Testing Technology,Beijing Academy of Agriculture and Forestry Sciences,Beijing,China

Quality and Safety Institute of Agricultural Products,Heilongjiang Academy of Agricultural Sciences,Harbin,China

Institute of Food Science and Technology,Chinese Academy of Agricultural Sciences,Beijing,China

Institute of Germplasm Resources and Biotechnology,Tianjin Academy of Agricultural Sciences,Tianjin,China

Laboratory of Quality and Safety Risk Assessment for Agro-Products of Ministry of Agriculture and Rural Affairs,Institute of Quality Standard and Testing Technology for Agro-Products of Sichuan Academy of Agricultural Sciences,Chengdu,China

Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality,Institute of Food Safety and Nutrition,Jiangsu Academy of Agricultural Sciences,Nanjing,China

Research Institute of Agricultural Quality Standards and Testing Techniques,Henan Academy and Agricultural Sciences,Zhengzhou,China

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出版年：

2024

DOI：

10.1093/fqsafe/fyad056

食品品质与安全研究(英文版)

ISSN：

年,卷(期)：2024.8(2)