Open AccessCHARACTERISTICS OF THE STRAIN Lactobacillus plantarum UL487 ISOLATED FROM TOFU (HUE)
Author(s) -
Dao Thi Anh Nguyen,
Vinh Van Hoang,
Uyen Quynh Nguyen
Publication year - 2020
Publication title -
khoa học
Language(s) - English
Resource type - Journals
ISSN - 1859-4816
DOI - 10.35382/18594816.1.40.2020.625
Subject(s) - lactobacillus plantarum , microbiology and biotechnology , bacteria , bacillus cereus , bacteriocin , salmonella enterica , biology , staphylococcus aureus , lactic acid , strain (injury) , pathogenic bacteria , agar , salmonella , antimicrobial , genetics , anatomy
Lactobacillus plantarum is widely used in many fields, especially in medicine. In this study, besides thestrain’s morphology (i.e, the colony and the cell under microscrope and scan electronic microscope), antibacterial activities against some pathogenic bacteria and the nucleotide sequences encoded for bacteriocin PlnA, PlnEF and the cold shock protein (Csp) of L. plantarum UL487 isolated form Tofu (Hue) were studiedby agar diffusion method and cloning. The results showed that: i) the morphology of the colony and the cell of the strain were typical for lactic acid bacteria; ii) UL487 owned antibacterial activities against some pathogenic bacteria such as Staphylococcus aureus VTCCB 658, Bacillus cereus VTCCB 613 and Salmonella enterica VTCCB 480; and iii) the nucleotide sequences encoded for bacteriocin PlnA, PlnEF and the amino acid of the cold shock protein (Csp) of the strain were 96%, 99% and 94% identical to those of the L. plantarum in the Gen Bank, respectively.