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  • Title: A bacteriological study of some frozen and nonfrozen foods.
    Author: Seng LY, Jegathesan M.
    Journal: Southeast Asian J Trop Med Public Health; 1977 Dec; 8(4):437-46. PubMed ID: 351818.
    Abstract:
    Over a period of 19 months, a total of 331 food samples were submitted to the Food Section of the Bacteriology Division for bacteriological examination. These included 184 samples of frozen seafoods from exporters and 147 samples of fresh, nonfrozen foods from food caterers. The total bacterial count for frozen seafoods ranged from 1 x 10(2) to 2.98 x 10(6) per gm with a mean of 2.14 x 10(5) per gm. Coliforms, Escherichia coli and Staphylococcus aureus were present in 48.9%, 3.3% and 8.2% of the samples examined respectively. Two of the cooked prawn samples showed the presence of Vibrio parahaemolyticus. For the fresh, nonfrozen foods, the total bacterial count ranged from 1 x 10(2) to 3.87 x 10(6) per gm with a mean of 2.58 x 10(5) per gm. The examination also showed that 74.8% were coliform positive, 14.9% were E. coli positive, and 4.8% were S. aureus positive. V. parahaemolyticus was not isolated in any of the samples tested. Other pathogens, namely, Vibrio cholerae, Salmonella and Shigella were not isolated from any of the foods examined. The bacterial levels in these foods were determined and their sanitary and public health significance is discussed.
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