Abstract
Three different plastic packaging (CPP, LDPE and HDPE) were researched on preservation of carp in this study, and the indicatiors of color difference and sensory evaluation were tracked. Color difference of carp block muscle was analyzed by CR-400 chroma meter, and the value of L*, a* and b* were measured at different stage of storage. At the same time, sensory evaluation was conducted. The results showed that the value of L* a* and b* all increased along with storage days, which indicated that the color of the carp block skin turning lighter, redder and yellower. The material of High Density Polyethylene (HDPE) could be better for keeping muscle color of carp during storage. However, the results of sensory evaluation showed that Cast Polypropylene (CPP) was better for keeping shelf quality of carp block. There was negative correlation between color difference and sensory evaluation. The value of b* could better represent sensory score in MAP, for it was correlate significantly with sensory evaluation in all three types of packaging.
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