Abstract
Growth yields were determined with Acetobacterium woodii strain NZva 16 on hydrogen and CO2, formate, methanol, vanillate, ferulate and fructose in mineral medium in the absence and presence of 0.05% yeast extract. Yeast extract was not essential for growth but enhanced growth yields by 25–100% depending on the substrate fermented. Comparison of yields on formate or methanol allowed calculation of an energy yield in the range of 1.5–2 mol ATP per mol acetate formed during homoacetate fermentation of A. woodii. In the presence of 6 mM caffeate, growth yields were determined with the substrates formate or methanol. Caffeate was reduced to hydrocaffeate and increased growth yields were obtained. An ATP yield of about 1 mol per mol of caffeate reduced was calculated. Cytochromes were not detectable in cell free extracts or membrane preparations.
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Tschech, A., Pfennig, N. Growth yield increase linked to caffeate reduction in Acetobacterium woodii . Arch Microbiol 137, 163–167 (1984). https://doi.org/10.1007/BF00414460
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DOI: https://doi.org/10.1007/BF00414460