Physiological Behavior of the Propionic Acid Group of Bacteria

Authors

Sara E. Kendall, Iowa State College
C. H. Werkman, Iowa State CollegeFollow

Document Type

Research

Abstract

The group constitutes a number of species of bacteria producing large quantities of propionic acid from carbohydrates. The generic diagnosis of the group is: Propionibacterium, Orla-Jensen, 1909. Gram positive, non-sporulating non-motile short rods showing marked morphological variation in acid media or when grown under aerobic conditions; normal growth anaerobic. Cultures are catalase positive. Carbohydrates, glucosides and alcohols attacked with the production of propionic acid, acetic acid and CO₂. The species are differentiated on the basis of sugar fermentation, nitrate reduction, pigment production and morphology. A key to the species is given with a description of each.

Publication Date

1929

Journal Title

Proceedings of the Iowa Academy of Science

Volume

36

Issue

1

First Page

111

Last Page

111

Copyright

©1929 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Kendall, Sara E. and Werkman, C. H. (1929) "Physiological Behavior of the Propionic Acid Group of Bacteria," Proceedings of the Iowa Academy of Science, 36(1), 111-111.
Available at: https://scholarworks.uni.edu/pias/vol36/iss1/17