Prediction of Shelf-life of Trachypenaeus curvirostris Based on Dynamic Model of Freshness Index
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    Abstract:

    In order to investigate the freshness changes of Trachypenaeus curvirostris during storage at different temperatures and to monitor the shelf-life of logistics in real time, Trachypenaeus curvirostris were stored at -30, -18, 0 ℃ and 4 ℃ to determine their K value, volatile basic nitrogen (TVB-N) value and total number of colonies (TVC), and the shelf-life prediction model was studied. The results showed that with the decrease of storage temperature, the decline rate of shrimp's freshness index also slowed down, the shelf-life was extended, and different temperature groups had a greater impact on the freshness index of shrimps. The kinetic model of storage temperature, storage time and K value, TVB-N value and total number of colonies constructed by using Arrhenius equation and combined with food TTT theory, shows that the fitting degree of each freshness index is good, and R2 > 0.9, the variable shelf-life prediction model of eagle claw shrimp has a higher accuracy rate for shelf-life prediction, and the absolute value of the relative error between the predicted value and the measured value does not exceed 5%. Therefore, the dynamic model based on the freshness index can be used to predict the shelf-life of the cold-chain logistics of Trachypenaeus curvirostris.

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  • Online: August 12,2021
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