جمعه 1 شهريور 1398
به سایت مجله پزشکی دانشگاه علوم پزشکی و خدمات بهداشتی و درمانی تبریز خوش آمدید
   أوت 23, 2019
   
   
     
  تعداد اعضاء : 3354 نفر
  بازدیدهای امروز :466 بار
  تعداد کل بازدیدها : 491033 بار
   
Volume: 41
Year: 2019
Month: 7
Subject Others
Title Bacteriocin production by Lactobacillus spp. And study on it's antimicrobial activity against some pathogenic microorganisms
Authors Fatemeh Kheirollahi; Masoumeh Anvari;
Abstract Background: Bacteriocins are antimicrobial proteins which prevent the growth of sensitive strains. The aim of study is to produce antimicrobial products using the lactic acid bacteria separated from low fat yogurt and survey on their antimicrobial activity. Methods: At the first bactobacillus separated from two kinds of pasteurized yogurt of Gilan and then its effect on E.coli and a staphylococcus aureus was studied by disc and gel diffusion methods. Also effect of different physicochemical factors on bacteriocin production was evaluated، using Taguchi methodology. Results: The greatest zone diameter and the highest rate of production and E.coli (17 mm). This diameter was observed in PH 5، inoculation size 20%, temperature 25oC, Glucose and yeast extract as the carbon and nitrogen sources. The result analysis of varians showed that carbon and nitrogen type had significant product. Conclusion: The results in optimized MRS broth medium show that the best bacteriocin production in the optimized environment was 70% greater and it could be prev the bacterial growth property
Keyword: Probiotic, Bacteriocin, Optimization, Lactobacillus.
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ISSN 1608-5671 (Print)  

ISSN 2008-160X (Online)  
 
     
     
 

ضريب تأثير (IF) مجله پزشکی دانشگاه علوم پزشکی تبریز  در  پايگاه  استنادي علوم جهان اسلام (ISC)  

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