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Survey Of Current Water Use Practices On Fresh Fruit And Vegetable Farms And Evaluation Of Microbiological Quality Of Surface Waters Intended For Fresh Produce Production

机译:新鲜果蔬农场当前用水实践的调查以及用于新鲜农产品生产的地表水微生物质量评价

摘要

Fruits and vegetables are a delicious and nutritious food source enjoyed worldwide. Most produce is grown in fields, under open skies, where human pathogens could be present and then transferred to fresh produce during production, harvesting, and packing resulting in contamination. Consumption of contaminated fresh produce can result in produce-associated foodborne illnesses as has been documented multiple times over the last three decades in commodities such as spinach, tomatoes, lettuce, melons, and peppers to name a few. Fresh fruits and vegetables that are eaten raw, receive no treatment that would remove or kill bacteria, viruses or other microorganisms that may be present. Thus the focus for reducing produce-associated foodborne illnesses is on preventing contamination before it occurs. Understanding risks that exist on farms and in packinghouses and developing Good Agricultural Practices (GAPs) that reduce these risks are critical to preventing contamination. The studies in this dissertation focus on fruit and vegetable production as it relates to food safety, with an emphasis on water management practices especially from surface water sources. Specifically, a grower survey was conducted to assess on-farm practices related to the use of surface water sources during the production of fruits and vegetables because surface water represents a potential microbial hazard, particularly if it is applied directly to the edible portion of the plant during irrigation, frost protection or the application of protective topical sprays. Samples from surface water sources on farms throughout New York and Tennessee were analyzed for water quality indicators such as quantified generic E.coli, specific conductance, turbidity, and pH with a subgroup of samples analyzed for Salmonella spp. as another means of assessing risk. This resulted in a better understanding of produce safety issues, particularly those related to the use of surface water during production to guide the practical implementation of food safety practices on farms and in packinghouses based on current, relevant scientific data. Reducing contamination risks through science-based risk assessment and the implementation of GAPs to reduce identified risks are effective and practical approaches that can be utilized by all growers to help ensure safe fresh fruits and vegetables.
机译:水果和蔬菜是享誉全球的美味营养食品。大多数农产品都生长在开阔天空下的田野中,在这些地方可能存在人类病原体,然后在生产,收获和包装过程中转移到新鲜农产品中,从而导致污染。食用受污染的新鲜农产品可能导致与农产品相关的食源性疾病,过去三十年来在菠菜,西红柿,生菜,甜瓜和辣椒等商品中已多次记录到这种疾病。生吃的新鲜水果和蔬菜未经任何处理,不会去除或杀死可能存在的细菌,病毒或其他微生物。因此,减少与农产品相关的食源性疾病的重点在于防止污染发生之前。了解农场和包装厂中存在的风险,并制定降低这些风险的良好农业规范(GAP),对于防止污染至关重要。本文的研究集中在水果和蔬菜的生产上,因为它涉及食品安全,并着重于水管理实践,尤其是地表水源的管理。具体而言,进行了一项种植者调查,以评估与水果和蔬菜生产过程中使用地表水源有关的农场实践,因为地表水代表着潜在的微生物危害,特别是如果直接将其用于植物的可食用部分时在灌溉,防霜或使用局部防护喷雾剂期间。对整个纽约和田纳西州农场的地表水样品进行了水质指标分析,如定量的通用大肠杆菌,比电导,浊度和pH值,并分析了亚组的沙门氏菌。作为评估风险的另一种方法。这使人们对产品安全问题有了更好的了解,尤其是与生产过程中使用地表水有关的问题,以根据最新的相关科学数据指导农场和包装厂食品安全实践的实际实施。通过基于科学的风险评估和实施GAP以降低已识别的风险来降低污染风险,是有效且实用的方法,所有种植者都可以使用该方法来帮助确保新鲜水果和蔬菜的安全。

著录项

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    Bihn Elizabeth;

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  • 年度 2011
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  • 原文格式 PDF
  • 正文语种 en_US
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