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Determination of quality index method for ice stored ungutted greenback grey mullet Chelon subviridis and estimation of its shelf life
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Fatemeh Ghani Kuvei   , Ainaz Khodanazary  , Isaac Zamani |
| , khodanazary@yahoo.com |
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Abstract: (31 Views) |
Background and Objectives: This study aimed to develop a Quality Index Method (QIM) for ice stored greenback grey mullet (Chelon subviridis), and estimate its shelf life of gutted fish samples during 16 days of storage.
Methods: For this research, it was analyzed periodically microbiological (total mesophilic (TMC), psychrotrophilic (PTC)), physicochemical (TVB-N, TMA, pH, TBARS and FFA), color analysis and sensory (Quality Index Method protocol) characteristics.
Findings: Partial least squares (PLS) regression was used to correlate the QIM attributes, and linear regression analysis was used to check the variables as a function of storage time. Principal component analysis (PCA) was used for interpreting physicochemical and bacteriological quality parameters. The QIM scheme was developed based on 34 demerit points, in which zero indicates total freshness. QI showed a linear relationship to storage time (QIM= 7.633× storage time-9.433, R2= 0.975), and the remaining storage time could be estimated with an accuracy of ± 3 days.
Conclusion: From the integration of sensory, microbiological, and physicochemical data, it was possible to estimate that the shelf life of ice stored Metapenaeus affinis is 12 days. |
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| Keywords: Chelon subviridis, Sensory analysis, Quality index method, Shelf life. |
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Type of Study: Research/ Original/ Regular Article |
Subject:
Fisheries and Aquaculture
Received: 2024/12/8 | Revised: 2025/09/6 | Accepted: 2025/09/6
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