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中国精品科技期刊2020
周俊, 夏秀东, 李亚辉, 王英, 董明盛, 周剑忠. 产β-D-葡萄糖苷酶乳酸菌的筛选、鉴定及系统发育分析[J]. 食品工业科技, 2018, 39(12): 119-123,131. DOI: 10.13386/j.issn1002-0306.2018.12.022
引用本文: 周俊, 夏秀东, 李亚辉, 王英, 董明盛, 周剑忠. 产β-D-葡萄糖苷酶乳酸菌的筛选、鉴定及系统发育分析[J]. 食品工业科技, 2018, 39(12): 119-123,131. DOI: 10.13386/j.issn1002-0306.2018.12.022
ZHOU Jun, XIA Xiu-dong, LI Ya-hui, WANG Ying, DONG Ming-sheng, ZHOU Jian-zhong. Screening,identification and phylogenetic analysis of Lactic acid bacteria producing β-D-glucosidase[J]. Science and Technology of Food Industry, 2018, 39(12): 119-123,131. DOI: 10.13386/j.issn1002-0306.2018.12.022
Citation: ZHOU Jun, XIA Xiu-dong, LI Ya-hui, WANG Ying, DONG Ming-sheng, ZHOU Jian-zhong. Screening,identification and phylogenetic analysis of Lactic acid bacteria producing β-D-glucosidase[J]. Science and Technology of Food Industry, 2018, 39(12): 119-123,131. DOI: 10.13386/j.issn1002-0306.2018.12.022

产β-D-葡萄糖苷酶乳酸菌的筛选、鉴定及系统发育分析

Screening,identification and phylogenetic analysis of Lactic acid bacteria producing β-D-glucosidase

  • 摘要: 为寻找一种适用于果酒增香的糖苷酶。利用七叶苷显色平板法,从63株乳酸菌中筛选得到4株产β-D-葡萄糖苷酶的菌株。再以对硝基苯基β-D-葡萄糖苷(PNPG)为底物,利用差速离心分级沉淀对β-D-葡萄糖苷酶进行初步定位。此外通过形态特征、生理生化实验等传统鉴定方法,结合16S rDNA序列分析对其进行鉴定。结果表明:所研究的4株菌株所产β-D-葡萄糖苷酶均为胞内酶;FL12和Hsb鉴定为植物乳杆菌(Lactobacillus plantarum),CM3鉴定为戊糖乳杆菌(Lactobacillus pentosus),T61鉴定为短乳杆菌(Lactobacillus brevis)。

     

    Abstract: In search for a glycosidase that can enhance flavor in fruit wine. Four strains of β-D-glucosidase were screened from 63 strains of Lactobacillus with Esculin color-developing plate method. The p-nitro-phenyl-β-D-glucopyranoside(PNPG)were used as a substrate and method of differential centrifugation graded precipitation was utilized to the initial location of β-D-glucosidase.In addition,traditional identification methods,such as morphology,physiological and biochemical tests,and sequence analysis of 16S rDNA were used to identify the four strains. The result indicated that the β-D-glucosidases generated by four strains were all endoenzyme;FL12 and Hsb were Lactobacillus plantarum,and CM3 was Lactobacillus pentosus and T61 was Lactobacillus brevis.

     

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