Aerobic and respirative growth of heterofermentative lactic acid bacteria: A screening study

Food Microbiology
T ZottaE Parente

Abstract

Heterofermentative lactic acid bacteria (76 strains) belonging to Lactobacillus, Leuconostoc and Weissella species which are important in fermentation, spoilage or as probiotics were screened in a factorial experiment for their ability to grow, produce catalase and consume oxygen in aerobiosis or in anaerobiosis, with or without supplementation with hemin and/or menaquinone in a medium containing glucose as a carbohydrate source. Aerobiosis improved growth with a few exceptions. The effect of supplementation with heme and/or menaquinone was strain specific and clear evidence of heme-boosted respiration was found in some cases. Heme-catalase was produced by strains of L. brevis, W. minor and Leuc. mesenteroides; some strains of the latter species produced non-heme catalase. Shaken flasks experiments showed that aerobic growth resulted in increased maximum growth rate and in a limited increase in biomass. Heme supplementation during aerobic growth resulted in a further increase in growth rate and final biomass only for a few strains; this was often related to catalase, which was also responsible for increased tolerance of H2O2. In both experiments we found evidence of heme toxicity, especially in anaerobiosis and in absence of me...Continue Reading

Citations

Oct 1, 2020·Food Science & Nutrition·Nasrin FayyazSahar Roshanak
Nov 12, 2020·International Journal of Systematic and Evolutionary Microbiology·Lu BaiYoung Hyo Chang
Feb 24, 2021·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Vanessa Moraes Ramalho CastroRosa Helena Luchese
Jun 4, 2021·Food Chemistry·Ana Paula Pereira BressaniRosane Freitas Schwan

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