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Rapid CO 2 Evolution Method for Determining Shelf Life of Refrigerated Catfish
Author(s) -
CHEW SY.,
HSIEH YH. P.
Publication year - 1998
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1998.tb17896.x
Subject(s) - catfish , shelf life , food spoilage , food science , chemistry , fishery , biology , fish <actinopterygii> , bacteria , genetics
The feasibility of a CO 2 evolution method using an IR analyzer to evaluate the shelf life of refrigerated (4deg;C) catfish was investigated. Aerobic plate count (APC), and isoelectric focusing (IEF) of samples were compared with the CO 2 evolution rate (CER) determinations. The increase in CER (25.78 to 195.63 Lg −1 h −1 ) for farm raised catfish stored from 0 to 10 days correlated highly with APCs (4.32 to 10.24 log CFU g −1 ). The IEF data also confirmed the APC and CER results. Catfish spoilage was evident after 6 days at 4°C. Direct measurement of CER is a rapid and effective method to determine the microbial quality of catfish.