@article{mbs:/content/journal/micro/10.1099/00221287-92-1-120, author = "Tennant, G. B.", title = "The Effect of Medium Redox Potential on the Folate-limited Growth of Lactobacillus casei var. rhamnosus", journal= "Microbiology", year = "1976", volume = "92", number = "1", pages = "120-124", doi = "https://doi.org/10.1099/00221287-92-1-120", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-92-1-120", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "Summary: The medium redox potential (E h) influenced the folate-limited growth of Lactobacillus casei; the growth response was maximal at an E h of +120 mV (pH 6·35). At raised E h serum folate would support less growth than pteroyl-glutamic acid, and the response to N 5-methyl tetrahydrofolic acid was intermediate between them. Pteroylglutamic acid was not destroyed during 24 h incubation at 37 °C in medium with E h values between +40 and +440 mV. Destruction of N 5-methyl tetrahydrofolic acid occurred within 24 h when the medium E h was greater than +125 mV. Folate was taken up rapidly by L. casei with an E h optimum at + 270 mV.", }