以两种黑牛肉为原料,采用0～4℃、7～11℃两个温度贮藏样品,通过每10d对黑牛肉进行pH值、水分含量、色泽、质构和菌落总数、大肠菌群等指标进行测定。结果表明：两种黑牛肉感官评分一致处于下降趋势;pH值变化不大,一直处于缓慢下降;两种黑牛肉水分含量变化相反,美好黑牛肉水分含量上升,高金黑牛肉则下降;两种产品的色泽变化一致;两种黑牛肉质构变化相反,可能与水分含量有关;菌落总数处于上升趋势,0～4℃贮藏的产品菌落总数比7～11℃的增长得缓慢,但都未超过卫生标准,上述说明低温更有利于保持产品品质的稳定性和安全性,延长肉品的货架期。%Dynamic characteristics of two commercial brands （Meihao and Gaojin） of black beef stored at 0 - 4 ℃ and 7 - 11 ℃ were investigated by determining sensory quality, pH, water content, color, texture, bacterial count and coliform number every 10 d during a storage period of 60 d. The results showed that the sensory quality of both brands of black beef revealed a declining trend, but the pH did not exhibit an obvious reduction. On the other hand, both brands revealed opposite change trends in water content; water content in Meihao black beef revealed an increasing trend, while Gaojin exhibited a declining trend. A similar change trend in color was observed, whereas the textural structure changed in an opposite manner, which may be related to water content. Although the number of colony-forming units revealed slow growth, it still did not exceed the hygiene standard. The above findings suggest that low temperature （0--4 ~C） is more conducive to maintaining the stability and safety of black beef.
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