The occurrence of enteric pathogens and Aeromonas species in organic vegetables

Ann McMahon, IG Wilson

    Research output: Contribution to journalArticle

    130 Citations (Scopus)

    Abstract

    A range of commercially available organic vegetables (n = 86) was examined for the presence of Salmonella, Campylobacter, Escherichia coli, E. coli O 157, Listeria and Aeromonas spp., to provide information on the occurrence of such organisms in organic vegetables in Northern Ireland. The study was not designed to quantify such organisms or to compare occurrence with conventionally farmed vegetables. Standard enrichment techniques were used to isolate and identify enteric pathogens and Aeromonas species. No Salmonella, Campylobacter, E. coli, E. coli O 157, Listeria were found in any of the samples examined. Aeromonas species were isolated from 34% of the total number of organic vegetables examined. Many (64%) of the organic vegetables examined were ``ready-to-eat'' after minimal processing, i.e., washing. Aeromonas spp. was isolated from 41% of these vegetables. Aeromonas spp. was not recovered from certain vegetable types. The most commonly isolated species of Aeromonas was Aeromonas schubertii with 21.0% of all samples contaminated with this species; 5.8% of samples contained A. hydrophila, 5.8% A. trota, 3.5% A. caviae and 2.3% contained A. veronii biovar veronii. Although Aeromonas species are frequently detected in organic vegetables, the absence of accepted enteric pathogens was encouraging, and does not support the allegation of organic foods being of high risk due to the farming methods used. (C) 2001 Elsevier Science B.V. All rights reserved.
    LanguageEnglish
    Pages155-162
    JournalInternational Journal of Food Microbiology
    Volume70
    Issue number1-2
    DOIs
    Publication statusPublished - Oct 2001

    Fingerprint

    Aeromonas
    vegetables
    pathogens
    Escherichia coli
    Listeria
    Campylobacter
    Aeromonas trota
    Aeromonas schubertii
    Salmonella
    Aeromonas punctata
    organic foods
    Northern Ireland
    Aeromonas hydrophila
    organisms
    sampling
    washing
    farming systems
    methodology

    Keywords

    • enteric pathogens
    • Aeromonas spp.
    • organic vegetables

    Cite this

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    abstract = "A range of commercially available organic vegetables (n = 86) was examined for the presence of Salmonella, Campylobacter, Escherichia coli, E. coli O 157, Listeria and Aeromonas spp., to provide information on the occurrence of such organisms in organic vegetables in Northern Ireland. The study was not designed to quantify such organisms or to compare occurrence with conventionally farmed vegetables. Standard enrichment techniques were used to isolate and identify enteric pathogens and Aeromonas species. No Salmonella, Campylobacter, E. coli, E. coli O 157, Listeria were found in any of the samples examined. Aeromonas species were isolated from 34{\%} of the total number of organic vegetables examined. Many (64{\%}) of the organic vegetables examined were ``ready-to-eat'' after minimal processing, i.e., washing. Aeromonas spp. was isolated from 41{\%} of these vegetables. Aeromonas spp. was not recovered from certain vegetable types. The most commonly isolated species of Aeromonas was Aeromonas schubertii with 21.0{\%} of all samples contaminated with this species; 5.8{\%} of samples contained A. hydrophila, 5.8{\%} A. trota, 3.5{\%} A. caviae and 2.3{\%} contained A. veronii biovar veronii. Although Aeromonas species are frequently detected in organic vegetables, the absence of accepted enteric pathogens was encouraging, and does not support the allegation of organic foods being of high risk due to the farming methods used. (C) 2001 Elsevier Science B.V. All rights reserved.",
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    The occurrence of enteric pathogens and Aeromonas species in organic vegetables. / McMahon, Ann; Wilson, IG.

    In: International Journal of Food Microbiology, Vol. 70, No. 1-2, 10.2001, p. 155-162.

    Research output: Contribution to journalArticle

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