Post-mortem Biochemical, Microbiological and Sensory Quality Changes in the Grass Carp (Ctenopharyngodon idella) during Ice Storage

Rasul Et Al., Md. Golam

doi:10.21608/ejabf.2022.259699

Post-mortem Biochemical, Microbiological and Sensory Quality Changes in the Grass Carp (Ctenopharyngodon idella) during Ice Storage

Document Type : Original Article

Author

Md. Golam Rasul et al.

10.21608/ejabf.2022.259699

Abstract

In this study, biochemical, bacteriological, and sensory changes of ice stored (0 ˚C) grass carp (Ctenopharyngodon idella) were investigated. Whole, ungutted fish were stored in insulated ice boxes maintaining a 1:2 fish ice ratio and analyzed periodically at every 3-day interval. On a fresh matter basis, moisture, crude protein, crude lipid, and ash content of grass carp during ice storage varied significantly (P < 0.05). The initial pH value of 6.76 increased to 7.05 on the 12^th day of ice storage. Throughout the storage period, total volatile basic nitrogen and thiobarbituric acid reactive substances values were increased. K-value also increased from 2.32% to 68.74% within 12 days. Aerobic plate count and total psychrotrophic count suggested that the fish was safe for human consumption until the 9^th day of storage; a similar acceptance period was also revealed by the result of sensory evaluation. From the evidence, it can be concluded that the shelf life of ice stored C. idella was 9 days in an insulated ice box with the above-mentioned fish ice ratio.

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