title: Dehydrogenase activity of pseudomonas species.
abstract: Single-strain cultures of Pseudomonas fragi, P. fluorescens, P. putrefaciens, and strains of two marine species, Pseudomonas type I and Pseudomonas type II, were found to be capable of reducing added acetaldehyde, proprionaldehyde, and butyraldehyde to the corresponding alcohols at 21 C. All species studied reduced propionaldehyde at 6 C. P. fragi, Pseudomonas type I, and Pseudomonas type II reduced butanone at 6 and 21 C. P. fragi and Pseudomonas type II reduced acetone at 21 C. Dehydrogenase activity was found in some cultures in which growth was not evident. Under aerobic conditions, a strain of P. fragi reduced added propionaldehyde to n-propanol quantitatively within 36 hr at 21 C.
authors.affiliation: Department of Food Science and Technology, Oregon State University, Corvallis, Oregon.
authors.forename: T W
authors.initials: TW
authors.lastname: Keenan
authors.forename: D D
authors.initials: DD
authors.lastname: Bills
authors.forename: R C
authors.initials: RC
authors.lastname: Lindsay