Assessment of aerobic and respiratory growth in the Lactobacillus casei group

One hundred eighty four strains belonging to the species Lactobacillus casei, L. paracasei and L. rhamnosus were screened for their ability to grow under aerobic conditions, in media containing heme and menaquinone and/or compounds generating reactive oxygen species (ROS), in order to identify respi...

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Veröffentlicht in:PloS one 2014-06, Vol.9 (6), p.e99189
Hauptverfasser: Zotta, Teresa, Ricciardi, Annamaria, Ianniello, Rocco G, Parente, Eugenio, Reale, Anna, Rossi, Franca, Iacumin, Lucilla, Comi, Giuseppe, Coppola, Raffaele
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container_title PloS one
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creator Zotta, Teresa
Ricciardi, Annamaria
Ianniello, Rocco G
Parente, Eugenio
Reale, Anna
Rossi, Franca
Iacumin, Lucilla
Comi, Giuseppe
Coppola, Raffaele
description One hundred eighty four strains belonging to the species Lactobacillus casei, L. paracasei and L. rhamnosus were screened for their ability to grow under aerobic conditions, in media containing heme and menaquinone and/or compounds generating reactive oxygen species (ROS), in order to identify respiratory and oxygen-tolerant phenotypes. Most strains were able to cope with aerobic conditions and for many strains aerobic growth and heme or heme/menaquinone supplementation increased biomass production compared to anaerobic cultivation. Only four L. casei strains showed a catalase-like activity under anaerobic, aerobic and respiratory conditions and were able to survive in presence of H2O2 (1 mM). Almost all L. casei and L. paracasei strains tolerated menadione (0.2 mM) and most tolerated pyrogallol (50 mM), while L. rhamnosus was usually resistant only to the latter compound. This is the first study in which an extensive screening of oxygen and oxidative stress tolerance of members of the L. casei group has been carried out. Results allowed the selection of strains showing the typical traits of aerobic and respiratory metabolism (increased pH and biomass under aerobic or respiratory conditions) and unique oxidative stress response properties. Aerobic growth and respiration may confer technological and physiological advantages in the L. casei group and oxygen-tolerant phenotypes could be exploited in several food industry applications.
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Most strains were able to cope with aerobic conditions and for many strains aerobic growth and heme or heme/menaquinone supplementation increased biomass production compared to anaerobic cultivation. Only four L. casei strains showed a catalase-like activity under anaerobic, aerobic and respiratory conditions and were able to survive in presence of H2O2 (1 mM). Almost all L. casei and L. paracasei strains tolerated menadione (0.2 mM) and most tolerated pyrogallol (50 mM), while L. rhamnosus was usually resistant only to the latter compound. This is the first study in which an extensive screening of oxygen and oxidative stress tolerance of members of the L. casei group has been carried out. Results allowed the selection of strains showing the typical traits of aerobic and respiratory metabolism (increased pH and biomass under aerobic or respiratory conditions) and unique oxidative stress response properties. 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Aerobic growth and respiration may confer technological and physiological advantages in the L. casei group and oxygen-tolerant phenotypes could be exploited in several food industry applications.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24918811</pmid><doi>10.1371/journal.pone.0099189</doi><oa>free_for_read</oa></addata></record>
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subjects Adaptation, Physiological
Aerobic conditions
Aerobiosis
Anaerobic conditions
Biology and Life Sciences
Biomass
Catalase
Cloning
Cultivation
Culture media
Cytochrome
Dietary supplements
Food industry
Food processing industry
Genomes
Heme
Hydrogen peroxide
Hydrogen Peroxide - pharmacology
Industrial applications
Lactobacilli
Lactobacillus
Lactobacillus casei
Lactobacillus casei - drug effects
Lactobacillus casei - growth & development
Lactobacillus casei - physiology
Lactobacillus plantarum
Lactococcus lactis
Media (culture)
Menadione
Menaquinones
Metabolism
Oxidative Stress
Oxygen
pH effects
Physiology
Probiotics
Pyrogallol
Pyrogallol - pharmacology
Reactive oxygen species
Reactive Oxygen Species - metabolism
Respiration
Respiratory diseases
Stress response
Studies
Supplementation
Vitamin K 3 - pharmacology
title Assessment of aerobic and respiratory growth in the Lactobacillus casei group
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