Microbiological quality of farm-reared freshwater fish, rohu (Labeo rohita)


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Authors

  • G Jeyasekaran Fisheries College and Research Institute Tamil Nadu Veterinary and Animal Sciences University, Tuticorin, India
  • S Ayyappan Division of Aquatic Microbiology, Central Institute of Freshwater Aquaculture, ICAR, Bhubaneswar -751 002, India

Abstract

The microbiological quality of farm-reared freshwater fish, rohu (Labeo rohita)
stored at two different temperatures was studied. The fish fillet was found to
have an initial bacterial load of 103 /g. The initial level of lactics, staphylococci,
aeromonads, anaerobes and molds in the fish fillet was 101/g. The vibrios and
E. coli were initially absent, but Salmonella present. The fish fillet held at
ambient temperature (28 ± 20C) was organoleptically acceptable up to 10 h,
when total bacterial load was in the threshold of exceeding 106/g. However, the
fish fillet stored at freezer temperatures (-10 to -150C) was found to be in acceptable
condition even after 30 days of storage and the total bacterial load was
fluctuating in the range of 103 - 104 / g. In the fish fillets stored at these two
temperatures, Staphylococcus sp. and Lactobacillus sp. were found to be the
dominant microflora, although there was a shift in bacterial flora consisting of
Bacillus, Micrococcus, Flavobacterium, Acinetobacter and Enterobacter during
storage at low temperatures.

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Author Biographies

  • G Jeyasekaran, Fisheries College and Research Institute Tamil Nadu Veterinary and Animal Sciences University, Tuticorin, India
    Fisheries College and Research Institute Tamil Nadu Veterinary and Animal Sciences
    University, Tuticorin, India
  • S Ayyappan, Division of Aquatic Microbiology, Central Institute of Freshwater Aquaculture, ICAR, Bhubaneswar -751 002, India
    Division of Aquatic Microbiology, Central Institute of Freshwater Aquaculture,
    ICAR, Bhubaneswar -751 002, India

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Issue

Vol. 50 No. 4 (2003)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Jeyasekaran, G., & Ayyappan, S. (2011). Microbiological quality of farm-reared freshwater fish, rohu (Labeo rohita). Indian Journal of Fisheries, 50(4), 455-459. https://epubs.icar.org.in/index.php/IJF/article/view/7660