Mutton's biochemical, physicochemical and microbial indexes were measured with a temperature-time indicator system based on lipase detection in the cold chain logistics of mutton. These indexes include TVBN, POV, shear force, the total number of microorganisms, pH, muscle color odor, flexibility, organization morphological etc. The results showed that the color of the indicator card was associated with the freshness of mutton directly. When the mutton was at first grade, the pH of the mixed indicator was greater than 7.5, the color was purple, blue, green, blue, turquoise. When at second grade, the pH of mixed indicator was 7.50~6.80, the color was light green, yellowish green. When at corruption stage, the pH of mixed indicator respectively was Less than 6.8, the color was yellow, light yellow.

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