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- W2038609425 abstract "Noroviruses (NoV) are a common cause of foodborne outbreaks. In spite of that, no standard viral detection method is available for food products. Therefore, three viral elution–concentration methods and one direct RNA isolation method were evaluated on a broad range of Ready-To-Eat (RTE) food products (mixed lettuce, fruit salad, raspberries and two RTE dishes) artificially seeded with a diluted stool sample contaminated with NoV genogroup II. These seeding experiments revealed two categories of RTE products, fruits and vegetables grouped together and RTE dishes (penne and tagliatelle salads) which are rich in proteins and fat formed another category. The RNA extracts were amplified and detected with two conventional RT-PCR systems (Booster and Semi-nested GII) and one real-time RT-PCR (Real-time GII) assay. A fast direct RNA isolation method detected 102 RT-PCRU on 10 g penne and tagliatelle salads with the conventional RT-PCR assays. However real-time RT-PCR was less sensitive for penne salad. A viral elution–concentration method, including a buffer solution for the elution step and one polyethylene glycol (PEG) precipitation step, was able to detect 102 RT-PCRU on 50 g frozen raspberries with conventional and real-time RT-PCR assays. Moreover the latter extraction method used no environmental hazardous chemical reagents and was easy to perform." @default.
- W2038609425 created "2016-06-24" @default.
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- W2038609425 date "2008-03-01" @default.
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- W2038609425 title "Evaluation of viral extraction methods on a broad range of Ready-To-Eat foods with conventional and real-time RT-PCR for Norovirus GII detection" @default.
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- W2038609425 doi "https://doi.org/10.1016/j.ijfoodmicro.2007.12.020" @default.
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