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Assessment of microbial risk factors and impact of meteorological conditions during production of baby spinach in the Southeast of Spain.
Castro-Ibáñez, I; Gil, M I; Tudela, J A; Ivanek, R; Allende, A.
Afiliación
  • Castro-Ibáñez I; Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, PO Box 164, Espinardo, Murcia E-30100, Spain.
  • Gil MI; Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, PO Box 164, Espinardo, Murcia E-30100, Spain.
  • Tudela JA; Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, PO Box 164, Espinardo, Murcia E-30100, Spain.
  • Ivanek R; Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA.
  • Allende A; Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, PO Box 164, Espinardo, Murcia E-30100, Spain. Electronic address: aallende@cebas.csic.es.
Food Microbiol ; 49: 173-81, 2015 Aug.
Article en En | MEDLINE | ID: mdl-25846928
There is a timely need to evaluate the effect agricultural factors and meteorological conditions on fresh produce contamination. This study evaluated those risk factors and described, for the first time, the distribution of indicator microorganisms (Escherichia coli, Enterococcus, coliforms, and Enterobacteriaceae) and the prevalence of foodborne pathogens (Enterohaemorrhagic E. coli, Listeria monocytogenes and Salmonella spp.) in baby spinach grown in the Southeast of Spain. A longitudinal study was conducted on three farms (2011-2013). Results obtained for E. coli highlighted soil and irrigation water as important factors affecting the microbial safety of baby spinach. Significant differences in the proportion of E. coli positive samples were found between treated (46.1%) and untreated (100%) irrigation water. However, the microbial quality of irrigation water didn't affect E. coli prevalence in produce. All E. coli positive spinach samples were detected at the highest observed temperature range suggesting that ambient temperature affects the probability and extent of spinach contamination. Salmonella spp. was detected by RT-PCR in manure, soil, irrigation water and baby spinach but only two of them (manure and irrigation water) were confirmed by isolation in culture media. Salmonella RT-PCR positive samples showed higher levels of E. coli than Salmonella negative samples. This preliminary finding supports recent identification of E. coli as a suitable parameter for the hygiene criterion at the primary production of leafy greens.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Microbiología del Suelo / Bacterias / Spinacia oleracea / Agua Dulce Tipo de estudio: Etiology_studies / Observational_studies / Prognostic_studies / Risk_factors_studies País/Región como asunto: Europa Idioma: En Revista: Food Microbiol Asunto de la revista: CIENCIAS DA NUTRICAO / MICROBIOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: España Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Microbiología del Suelo / Bacterias / Spinacia oleracea / Agua Dulce Tipo de estudio: Etiology_studies / Observational_studies / Prognostic_studies / Risk_factors_studies País/Región como asunto: Europa Idioma: En Revista: Food Microbiol Asunto de la revista: CIENCIAS DA NUTRICAO / MICROBIOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: España Pais de publicación: Reino Unido