Microbial co-culture production of propionic acid

Details Microbial co-culture production of propionic acid Microbial co-culture production of propionic acid

1984-04-16

1988-12-27

Weimar, Elizabeth

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Process involving micro-organisms of different genera in the...

435140, 435141, 435822, 435853, 435885, 435801, 435139, 4352524, C12P 3900, C12P 754, C12P 752, C12N 120

Patent

active

047940808

ABSTRACT:
A simultaneous sequential anaerobic fermentation process for the in vitro production of propionic and acetic acids is disclosed. The process comprises employing an obligatory two-component co-culture which maintains a relatively constant ratio of species populations over multiple passages. A first co-culture component is a Lactobacillus or Streptococcus which homofermentatively converts the hexose to lactic acid. A second microorganism in the co-culture is a Veillonella which is metabolically incapable of assimillating the hexose and converts the lactic acid product to propionic and acetic acids. The co-culture is inoculated into a nutrient growth feedstock such as whole whey or a clarified dairy whey lactose permeate which contains a metabolizable source of a hexose such as glucose, lactose or sucrose.

REFERENCES:
patent: 1932755 (1933-10-01), Stiles et al.
patent: 4391887 (1983-07-01), Baumgarton et al.
patent: 4567140 (1986-01-01), Voelskow et al.
Liu et al., 1982, Appl. Environ. Microbiol 44/3/715-722.
Bergey's Manual of Systemic Bacteriology Krieg et al. (eds) 1984, Williams and Wilkins, Baltimore.
Distler, W. and A. Kroncke, "Acid Formation by Mixed Cultures of Dental Plaque Bacteria Actinomyces and Veillonella", Arch. Oral Biol., vol. 26, pp. 123-136 (1981).

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