Isolation of Aeromonas hydrophila from cooked tripe

Hunter, Paul; Cooper-Poole, B.; Hornby, H.

doi:10.1111/j.1472-765x.1992.tb00768.x

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…Aeromonas hydrophila was isolated from 48% of retail cooked tripes (Hunter et al 1992) with three of the 21 positive samples yielding very high counts of the organism (more than 10 6 g 71 ).…”

Section: Original Articlementioning

confidence: 99%

Growth of Aeromonas hydrophila in modified-atmosphere-packed cooked meat products

et al. 2000

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Section: Original Articlementioning

confidence: 99%

Growth of Aeromonas hydrophila in modified-atmosphere-packed cooked meat products

et al. 2000

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“…1981;Hazen 1983), drinking water supplies (Havelaar et al 1990;Krovacek et al 1992b), domestic wastewater (Poffk and Op de Beeck 1991; Boussaid et a/. 1991) and mineral waters (Hunter 1993), but have also been isolated from food (Hunter et a/. 1992; Krovacek et a/.…”

Section: Introductionmentioning

confidence: 99%

Diversity of Aeromonas sp. in Flemish drinking water production plants as determined by gas‐liquid chromatographic analysis of cellular fatty acid methyl esters (FAMEs)

Huys

Kersters

Vancanneyt

et al. 1995

Journal of Applied Bacteriology

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Gas-liquid chromatography of cellular fatty acid methyl esters (FAMEs) was used to determine the phenotypic and genotypic diversity among 489 presumptive Aeromonas strains isolated from five Flemish drinking water production plants. FAME profiles were compared with the predetermined library profiles of a representative database, AER48C, which contains the mean FAME data of all 14 currently established hybridization groups (HGs) or genospecies within Aeromonas. Using AER48C, more than 93% (457 strains) of all presumptive aeromonads isolated on ampicillin-dextrin agar were unequivocally identified as belonging to this genus. Moreover, 85.5% and 73.5% of these strains could be assigned to a particular phenospecies or HG, respectively. Raw and treated surface water samples were dominated by members of the Aer. hydrophila complex (38.8%, comprising HGs 1-3), followed by the Aer. caviae complex (22.7%, comprising HGs 4-6) and the Aer. sobria complex (16.7%, comprising HGs 7-9). HGs 3, 5A/B and 8 were the most prominent genospecies in this type of water. On the other hand, it was found that raw and treated phreatic groundwater samples displayed a much more limited species diversity since these were almost entirely dominated (95.8%) by strains belonging to HGs 2 and 3 of the Aer. hydrophila complex. In general, flocculation-decantation and sand filtration were not shown to influence the overall species distribution in any of the plants examined.

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Influence of temperature and process technology on the occurrence of Aeromonas species and hygienic indicator organisms in drinking water production plants

et al. 1995

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The occurrence of Aeromonas spp. and hygienic indicator organisms in raw and treated waters of five drinking water production plants in Flanders (Belgium) was surveyed over a period of 17 months. Aeromonads were isolated on ampicillin-dextrin agar (ADA) and further identified by gas-liquid chromatographic analysis of their cellular fatty acid methyl ester (FAME) content. ADA medium was found to be highly specific for the enumeration of Aeromonas spp. In general, Aeromonas counts were very low in untreated groundwater but numbered 10(4)-10(6) colony-forming units per liter in open storage reservoirs for surface water. Aeromonas spp. were seasonally distributed with maximal densities occurring during the summer. The ecology of Aeromonas in the different waters was studied in relation to the physical, chemical, and microbiological water characteristics. Strongly positive correlations were observed between Aeromonas densities and heterotrophic plate counts, whereas a clearly negative relationship was found with dissolved oxygen. On average, 99.7% of the aeromonads were removed by flocculation-decantation followed by breakpoint chlorination, whereas 98.9% were removed by slow sand filtration. Flocculation-decantation without breakpoint chlorination did not reduce the microbial numbers. At three of four drinking water production plants tested, rapid sand filtration decreased the number of aeromonads and hygienic indicator organisms. At one plant, however, the numbers of Aeromonas and hygienic indicator organisms were high in the sand filter effluents. Increased numbers of aeromonads were also counted in the effluent of the activated carbon filters. Hence, inactivation of Aeromonas spp. by the current process technology appears not sufficient to exclude postchlorination. The survival of aeromonads in certain filter systems may be due to the growth of these bacteria on biodegradable organic material, provided by the decomposition from bacteria, algae, or other sources.

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Isolation of Aeromonas hydrophila from cooked tripe

Cited by 5 publications

References 4 publications

Growth of Aeromonas hydrophila in modified-atmosphere-packed cooked meat products

Growth of Aeromonas hydrophila in modified-atmosphere-packed cooked meat products

Diversity of Aeromonas sp. in Flemish drinking water production plants as determined by gas‐liquid chromatographic analysis of cellular fatty acid methyl esters (FAMEs)

Influence of temperature and process technology on the occurrence of Aeromonas species and hygienic indicator organisms in drinking water production plants

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