Ice amount determination and shelf-life prediction of ice-stored crucian carp during storage and transportation

The influence of different amount of ice on the quality of crucian carp were studied in the paper; Arrhenius equation were applied to establish dynamic prediction model of crucian carp.At 5℃, the effect of 50%, 100%, 150%and 200% amount of ice on sensory quality, total volatile basic nitrogen ( TVB-N) value, pH, elasticity and shelf life of crucian carp was studied. Meanwhile, shelf life accelerating test under 15, 25 and 35℃ was conducted, respectively.The kinetics of TVB-N changes and the shelf life prediction model was established.Results indicated that the different amount of ice had significant effect on the quality of crucian carp, considering the actual time and cost of storage and transportation, the 150% amount of ice was chosen; the calculated data of TVB- N were satisfactorily described by a zero order kinetic model with the active energy ( Ea) 35kJ /mol.The verification test of crucian carp stored under 7, 18, 32℃ showed that the relative error of shelf life prediction model was 8.89%.As a conclusion, the established models could be used to predict the quality of ice-stored crucian carp satisfactorily.