泡菜发酵过程中真菌群落结构研究及优势真菌菌群变化分析Study on Fungi Community Structure in Pickle during Natural Fermentation and Analysis on Changes of Predominant Fungi
孟霞,裴乐乐,张安,张亚豪,张文学
摘要(Abstract):
采用构建18SrDNA克隆文库及ARDRA分型分析对发酵过程中青菜泡菜样品进行研究,了解其真菌的多样性。结果表明:所得到的744个阳性克隆子分布于11个类群,其绝对优势真菌Debaryomyces贯彻整个发酵中期,Pichia在发酵第15天为绝对优势菌,Kodamaea ohmeri在发酵第81天为绝对优势菌,检测到的主要优势真菌有Candida等。荧光定量qPCR的结果与克隆文库基本吻合,进一步说明了克隆文库的准确性。此结果不仅能够较全面、真实地反映同种原料泡菜发酵过程中真菌的群落结构及差异,而且能发挥免培养技术的优势,可为泡菜等发酵食品的研究应用提供一定的理论基础。
关键词(KeyWords): 泡菜;真菌;ARDRA;18S rDNA克隆文库;qPCR
基金项目(Foundation): 国家科技支撑计划(2012BDA31B00);; 四川省科技支撑计划(2013VZ0055)
作者(Author): 孟霞,裴乐乐,张安,张亚豪,张文学
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