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The occurrence of enteric pathogens and Aeromonas species in organic vegetables

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

McMahon, Ann and Wilson, IG (2001) The occurrence of enteric pathogens and Aeromonas species in organic vegetables. INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY, 70 (1-2). pp. 155-162. [Journal article]

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DOI: 10.1016/S0168-1605(01)00535-9

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.

Item Type:Journal article
Keywords:enteric pathogens; Aeromonas spp.; organic vegetables
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Health Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Infection and Immunity/Microbiology
ID Code:6118
Deposited By:Dr Ann McMahon
Deposited On:13 Jan 2010 10:05
Last Modified:01 Mar 2012 15:00

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