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不同干燥方式对滑子蘑滋味物质的影响

Effects of Different Drying Methods on the Taste Substances of Pholiota microspora

  • 摘要: 为探究热风干燥、热泵干燥和微波干燥3种不同干燥方式对滑子蘑中滋味物质的影响,结合电子舌分析,测定比较了干燥滑子蘑中游离氨基酸、有机酸、5'-核苷酸的含量,并运用等鲜浓度(Equivalent umami concentration,EUC)值对其进行了鲜味评价。结果表明:微波干燥的滑子蘑中总游离氨基酸(168.81 mg/g)和有机酸(88.69 mg/g)含量最高;热泵干燥滑子蘑中总5'-核苷酸(2.86 mg/g)含量最高,但3种干燥样品中呈鲜核苷酸含量大小排序为:微波干燥>热风干燥>热泵干燥;微波干燥样品EUC值高于热风和热泵干燥样品。电子舌分析显示,3种干燥方式处理的滑子蘑滋味差异明显。综合考虑认为,微波干燥方式较利于保留滑子蘑中与滋味相关的物质,更适合滑子蘑的干制。

     

    Abstract: In order to explore the effects of three different drying methods(hot air drying, heat pumpon, microwave drying) on the taste substances of Pholiota microspora, the contents of free amino acids, organic acids and 5’-nucleotides in dried Pholiota microspora were determined and compared combined with the electronic tongue analysis, and the umami taste was evaluated by equivalent umami concentration(EUC) value. The results showed that the contents of total free amino acid(168.81 mg/g) and organic acid(88.69 mg/g) of Pholiota microspora dried by microwave was the highest, and the content of total 5’-nucleotides(2.86 mg/g) of Pholiota microspora dried by heat pump was the highest, but the order of umami nucleotide content in three dried samples was: microwave drying>hot air drying>heat pump drying. The EUC value of microwave drying samples was higher than that of hot air and heat pump drying samples. Electronic tongue analysis showed that the taste of Pholiota microspora treated by three drying methods was significantly different. Comprehensive consideration, microwave drying was more conducive to retain the taste related components in Pholiota microspora, which was more suitable for the drying of Pholiota microspora.

     

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