MOLECULAR CHARACTERIZATION OF ISOLATED LACTIC ACID BACTERIA FROM DIFFERENT TRADITIONAL DAIRY PRODUCTS OF TRIBES IN THE FARS PROVINCE, IRAN

Authors

  • MARYAM JAFARI
  • Nabi Shariatifar
  • Gholamreza Jahed Khaniki
  • mehran sayadi Department of Food Safety and Hygiene, School of Health, Fasa University of Medical Sciences, Fasa, Iran
  • Abbas Abdollahi

DOI:

https://doi.org/10.15414/jmbfs.3621

Keywords:

Biochemical Identification, Genotypic Identification, Lactic acid bacteria, Strain selection, Traditional dairy products

Abstract

Various traditional dairy products could be considered as an abundant source for Isolation/collection of new lactic acid bacteria (LAB) with unique characteristics. The present researchaimed to investigate the morphological, biochemical and genotypic characterization of dominant lactic acid bacteria that were isolated from traditional dairy products in Iranian tribes . A total of 75 samples of traditional yogurt, doogh from dairy units in Fars province were randomly collected. Isolation of lactic acid bacteria, biochemical and genotypic identification were conducted. Totally, 157 LAB isolates were selected. Cocci and rod shape LAB were 53.50% and 46.49%, respectively. Biochemical tests showed the occurrence of 40.6% of the strains were Streptococcus, 2.25% of the strains were enterococci and 20.3% of the strains were lactococci. Most isolated lactobacilli were related to Lactobacillus plantarum and Lactobacillus bulgaricus. Genetically the presence of the following species was verified: Lactococcus lactis subsp. cremoris, Lactobacillus plantarum, Streptococcus thermophilus, Lactobacillus fermentum, Lactococcus lactis subsp. lactis, Lactobacillus bulgaricus, Lactobacillus helveticus, and Lactobacillus casei. The current study showed that thestrains which were isolated from traditional dairy products were not only appropriatefor use as starter adjuncts or cultures, but also they may provide a valuable gene pool for research and production of commercial starters with specific traits.

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Published

2021-10-01

How to Cite

JAFARI, M., Shariatifar, N. ., Jahed Khaniki, G., sayadi, mehran, & Abdollahi , A. . (2021). MOLECULAR CHARACTERIZATION OF ISOLATED LACTIC ACID BACTERIA FROM DIFFERENT TRADITIONAL DAIRY PRODUCTS OF TRIBES IN THE FARS PROVINCE, IRAN. Journal of Microbiology, Biotechnology and Food Sciences, 11(2), e3621. https://doi.org/10.15414/jmbfs.3621
Received 2020-08-22
Accepted 2021-04-16
Online Published 2021-10-01