中国农业机械化科学研究院集团有限公司 主管

北京卓众出版有限公司 主办

腌卤牛肉快速冷却工艺对比及评价指标相关性分析

Comparison of Quick Cooling Processes for Marinated Beef and Correlation Analysis of Evaluation Indicators

  • 摘要: 腌卤牛肉熟制完成后快速冷却可以缩短腌卤牛肉出锅到包装的时间,利于保持腌卤牛肉风味和营养价值。采用液氮、冰水混合物、4 °C、–20 °C及–40 °C 5种冷却方式,从冷却速率、颜色、质构和感官4方面对比分析腌卤牛肉品质差异,分析不同冷却过程中品质变化规律。结果表明,腌卤牛肉出锅后,冷却速率由大到小依次为液氮、–40 °C、冰水混合物、4 °C和–20 °C;液氮和–20 °C冷却后L*值最大;–40 °C冷却滋味和质地得分最高,质构指标均处于中间值。复热后,–20 °C冷却速率显著增加;液氮冷却后L*值最大,硬度均显著增加;–40 °C冷却感官评价各指标得分均为最高,质构指标均处于中间值。相关性结果显示,感官评定指标与质构结果间均无显著相关性。该研究结果可为腌卤牛肉高效冷却包装提供理论和数据支撑。

     

    Abstract: After marinated beef is cooked, quick cooling can shorten time from pot to packaging, which is beneficial for maintaining flavor and nutritional value of marinated beef.By using different cooling methods such as liquid nitrogen, ice water mixture, 4 °C, –20 °C, and –40 °C, quality differences of marinated beef were compared and analyzed from aspects of cooling rate, color, texture, and sensory perception.Quality changes during different cooling processes were analyzed.Results showed that cooling rate of beef immediately after being cooked, in descending order, was liquid nitrogen, –40 °C, ice water mixture, 4 °C and –20 °C; the L* value was maximum after liquid nitrogen and –20 °C coolin; taste and texture scores were highest when cooled at 40 °C, and texture indicators were in the middle range.After reheating, cooling rate at –20 °C significantly increased; the L* value was maximum after liquid nitrogen cooling; the hardness significantly increased; sensory evaluation of cooling at 40 °C has the highest scores for all indicators, and texture indicators were all in the middle range.Correlation results showed that there was no significant correlation between sensory evaluation indicators and texture results.Research results could provide theoretical and data support for efficient cooling and packaging of marinated beef.

     

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