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Microbiological and physico-chemical quality of various tissue types of fresh and potassium sorbate-treated and untreated smoked mullet (Mugil cephalus)

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Abstract

Flesh, gill or head tissues of fresh or smoked potassium sorbate (PS) treated and untreated mullet (Mugil cephalus) were evaluated for microbiological and physicochemical quality. Smoked, PS-treated and untreated mullet were further smoked after 3 days of initial smoking and stored (29±2°C). Overall microbial load was significantly higher in heads than in either flesh or gills. Conversely, with smoking, significant maximum load occurred in the flesh of PS-treated and in untreated mullet but the gills showed the lowest incidence. Coliform and staphylococci decreased markedly following final smoking but lactobacilli and fungi increased considerably following different lag periods. Lower counts occurred in PS-treated samples. The pH initially increased but decreased sharply after the final smoking. Moisture content decreased markedly on smoking and increased slightly during storage with gill tissues being highest.

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Authors
  1. B. J. O. Efiuvwevwere
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  2. H. A. Iweanoge
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Additional information

The authors are with the Department of Microbiology, Food and Industrial Division, University of Port Harcourt, PMB 5323, PO Box 148 Port Harcourt, Nigeria.

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Efiuvwevwere, B.J.O., Iweanoge, H.A. Microbiological and physico-chemical quality of various tissue types of fresh and potassium sorbate-treated and untreated smoked mullet (Mugil cephalus). World Journal of Microbiology and Biotechnology 7, 562–566 (1991). https://doi.org/10.1007/BF00368361

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  • DOI: https://doi.org/10.1007/BF00368361

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