Home General Physiology and Biophysics 2019 General Physiology and Biophysics Vol.38, No.5, p.455–460, 2019

Journal info

Quarterly, 80 pp. per issue
Founded: 1982
ISSN  1338-4325 (online)

Published in English

Aims and Scope
Editorial Info
Abstracting and Indexing
Submission Guidelines

Select Journal

Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

General Physiology and Biophysics Vol.38, No.5, p.455–460, 2019

Title: Evaluation of thermostable catalase-peroxidase AfKatG supplementation on toxicity of residual hydrogen peroxide in cultivation media of lactic acid bacteria from starter cultures
Author: Eva Struhárňanská, Monika Chovanová, Silvia Rybecká, Mária Mikulášová, Zdenko Levarski, Marcel Zámocký, Stanislav Stuchlík, Ján Turňa

Abstract: Lactic acid bacteria (LAB) are exceptionally important strains in food industry. It is a heterogeneous group sharing same metabolic and physiological properties. They are usually catalase-negative strains, which represents a big disadvantage in food production in comparison with pathogenic bacteria as staphylococci and listeria existing in the same environment, because of the use of hydrogen peroxide as a disinfection agent which is utilized by catalases. We focused on increase in LAB surviving through the disinfection without any positive effect on growth of pathogenic bacteria. In our functional test hydrogen peroxide was used for disinfection. Ten mM thermostable catalase-peroxidase AfKatG was added to solid media to cultivate bacteria afterwards. As predicted there was no difference in the growth of pathogenic bacteria with or without catalase-peroxidase addition to media. However, we showed a huge positive effect on surviving LAB. With addition of AfKatG to solid media we gained 2–38 times higher CFU/ml than in control samples without it. We can assume AfKatG as an excellent supplement for growth media of food strains.

Keywords: Lactic acid bacteria, Thermostable catalase-peroxidase, Disinfection, Food pathogens
Published online: 30-Sep-2019
Year: 2019, Volume: 38, Issue: 5 Page From: 455, Page To: 460

download file

© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.