冠突散囊菌发酵桑叶茶品质研究

Food Science and Technology(2021)

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Abstract
为探究冠突散囊菌在制作发酵桑叶茶中的应用,从茯砖茶“金花”中筛选冠突散囊菌,并进行菌落形态特征观察、光学显微镜及电镜观察、18S rDNA测序、同源比对,鉴定得到一株冠突散囊菌,命名为GTSNJ001.利用该菌株,以桑叶为原料,制作冠突散囊菌发酵桑叶茶和桑叶绿茶,以多糖、黄酮、多酚、水浸出率、1-脱氧野尻霉素(DNJ)和感官品评为主要评价指标,研究冠突散囊菌发酵桑叶茶和桑叶绿茶品质.结果 表明:与桑叶绿茶相比,冠突散囊菌发酵桑叶茶的多糖、黄酮、多酚含量均下降,降幅分别为76.1%、12%、7.1%,而DNJ和水浸出率含量大幅增加,增加量为未发酵桑叶茶的3倍左右,冠突散囊菌发酵桑叶茶感官品评综合得分也优于桑叶绿茶.
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