Postmortem Biochemical and Microbiological Changes in Loricariid Catfish (Pterygoplichthys disjunctivus) Muscle During Ice Storage

Postmortem 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 st...

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Bibliographic Details
Published in:Journal of aquatic food product technology 2016-01, Vol.25 (1), p.105-113
Main Authors: Marquez-Rios, Enrique, Pacheco-Aguilar, Ramon, Ramirez-Suarez, Juan Carlos, Ocano-Higuera, Victor M., García-Sifuentes, Celia O., Scheuren-Acevedo, Susana M., Mazorra-Manzano, Miguel A.
Format: Article
Language:English
Subjects:
Biochemistry
Catfish
Cold storage
Ice
K-value
loricariid catfish
microbiological changes
Microbiology
postmortem muscle changes
Pterygoplichthys
Pterygoplichthys disjunctivus
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Summary:Postmortem 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.
ISSN:1049-8850
1547-0636
DOI:10.1080/10498850.2013.828146