Postmortem Biochemical and Microbiological Changes in Loricariid Catfish (Pterygoplichthys disjunctivus) Muscle During Ice Storage |
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| Authors: | Enrique Marquez-Rios Ramon Pacheco-Aguilar Victor M Ocano-Higuera Celia O García-Sifuentes Susana M Scheuren-Acevedo |
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| Institution: | 1. Research Center for Food and Development, Hermosillo, Sonora, Mexico;2. Department of Chemical and Biological Sciences, University of Sonora, Hermosillo, Sonora, México |
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| Abstract: | ABSTRACTPostmortem biochemical and microbiological changes in loricariid catfish (Pterygoplichthys disjunctivus) muscle were evaluated during ice storage for 20 days. Values of pH remained stable for 15 days (7.4 ± 0.2), and total volatile base-nitrogen (TVB-N) remained under acceptable limits throughout storage, with a final value of 25.2 ± 3.3 mg N/100 g muscle at Day 20. Adenosine-5´-triphosphate (ATP) and derivatives followed a postmortem degradation pattern similar to other species, with the K-value being the best freshness loss indicator. Biochemical and microbiological changes indicated that the shelf life of iced loricariid catfish muscle was 15 days under optimal (0°C) storage conditions. |
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| Keywords: | loricariid catfish Pterygoplichthys disjunctivus postmortem muscle changes K-value microbiological changes |
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