title: Production of propionic acid by mixed bacterial fermentation.
abstract: VariousPropionibacteria andLactobacilli have been grown in starch based media in pure and mixed cultures to ascertain the optimum conditions for propionic acid production. A system has been identified using.Propionibacterium freudenreichii ssshermanii grown in mixed culture withLactobacillus amylophilus that yields approximately 20g/l propionic acid from a medium consisting of wheat flour and corn steep liquor. Simple processing of fermentation broths results in a product containing approximately 30% (w/w) propionic acid that may be suitable for use as a food preservative.
authors.affiliation: Dalgety PLC, Group Research Laboratory, CB1 2JN, Cambridge, England.
authors.forename: P M
authors.initials: PM
authors.lastname: Border
authors.affiliation: Dalgety PLC, Group Research Laboratory, CB1 2JN, Cambridge, England.
authors.forename: M P J
authors.initials: MP
authors.lastname: Kierstan
authors.affiliation: Dalgety PLC, Group Research Laboratory, CB1 2JN, Cambridge, England.
authors.forename: G S
authors.initials: GS
authors.lastname: Plastow