Lactobacillus buchneri, 1,2-propanediol

Schutz, H., Radler, F. (1984a). Anaerobic reduction of glycerol to propanediol-1,3 by Lactobacillus brevis and Lactobacillus buchneri. Syst. Appl. Microbiol., 5, 169-178. 

Oude Elferink, S. J., Krooneman, J., Gottschal, J. C. S. S. R, Faber, F. D. F. (2001). Anaerobic conversion of lactic acid to acetic acid and 1,2-propanediol by Lactobacillus buchneri. Applied and Environmental Microbiology, 67, 125-131. 

A novel route to 1,2-PD by the anaerobic conversion of lactic acid by Lactobacillus buchneri was described. Lactic acid had been shown to disappear in silage inoculated with L. buchneri. This organism anoxically converts 2 moles of lactic acid to 1 mole of acetic acid and 1 mole of 1,2-propanediol. This conversion does not occur unless the organism is at a pH below 5.8. In the proposed pathway, 1 mole of lactic acid is converted to 1,2-PD through lactaldehyde, while the other mole of lactic acid is converted through pyruvate to acetate (Oude Elferink et al. 2001). 

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