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投稿时间:2018-10-23
投稿时间:2018-10-23
中文摘要: 以腐乳为研究对象,利用变性梯度凝胶电泳(polymerase chain reaction-denaturing gradient gel electrophoresis,PCR-DGGE)技术与Miseq 高通量测序技术相结合的手段解析及评价细菌多样性,同时利用传统纯培养的方法对乳酸菌进行分离、纯化与鉴定。结果显示:腐乳中主要微生物为变形菌门(Proteobacteria,80.45%),其中绿脓杆菌属、不动杆菌属、鞘氨醇杆菌属、布丘氏菌属和草螺菌属细菌为优势细菌属。同时通过PCR-DGGE 和纯培养发现腐乳中鉴定出 7 株乳酸菌,其中 2 株为戊糖片球菌(Pediococcus pentosaceus),1 株为乳酸片球菌(Pediococcus acidilactici),4株为屎肠球菌(Enterococcus faecium)。由此可知腐乳中蕴含着丰富的微生物资源,同时屎肠球菌(Enterococcus faecium)为优势乳酸菌。
中文关键词: 腐乳 变性梯度凝胶电泳 Miseq高通量测序 细菌多样性 乳酸菌
Abstract:The bacterial diversity of sufu in Enshi was analyzed and evaluated by polymerase chain reaction and denaturing gradient gel electrophoresis(PCR-DGGE)technologies and Miseq high throughput sequencing.The results showed that Proteobacteria(80.45%)was main microbial in sufu and the dominant bacteria generas were Pseudomonas,Acinetobacter,Sphingobacterium,Buttiauxella and Herbaspirillum.Furthermore,by using of PCR-DGGE and pure culture methods turned out that there were 7 strains of Lactic acid bacteria were isolated from sufo and 2 strains were Pediococcus pentosaceus,one strain was Pediococcus acidilactici and 4 strains were Enterococcus faecium.It showed that an abundant microbial resource in sufu,and Enterococcus faecium was the dominant lactic acid bacteria.
keywords: sufu polymerase chain reaction-denaturing gradient gel electrophoresis(PCR-DGGE) Miseq high throughput sequencing bacterial diversity lactic acid bacteria
文章编号:201916029 中图分类号: 文献标志码:
基金项目:湖北省荆楚卓越工程师协同育人计划(201657);湖北文理学院2018年度学科开放基金项目(931102)
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