Skip to main content
Applied Microbiology logoLink to Applied Microbiology
. 1969 Jan;17(1):176–178. doi: 10.1128/am.17.1.176-178.1969

Protein Quality of the Bacterium Hydrogenomonas eutropha

Doris H Calloway a, Adarsh M Kumar a,1
PMCID: PMC377633  PMID: 4975453

Abstract

Hydrogenomonas eutropha cells harvested from semicontinuous autotrophic culture and washed free of substrate contain about 13% of nitrogen on a dry-solids basis. Biological value and digestibility of the bacterial nitrogen were determined in the rat by use of an abbreviated Mitchell-Thomas nitrogen balance technique and casein as the standard protein. Casein nitrogen was 99% digestible, and that of both whole boiled and sonically ruptured bacterial cells was 93%. Biological value of casein and the bacterial preparations was uniformly 77%. Amino acid composition of the bacteria, as in the case of casein, indicates a first limitation of sulfur-containing amino acids. These compositional features suggest that H. eutropha may be potentially valuable as a protein supplement in animal feeds.

Full text

PDF
176

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. ROBERTS R. S. The nutritional properties of killed Bacterium coli. Br J Nutr. 1954;8(4):353–363. doi: 10.1079/bjn19540053. [DOI] [PubMed] [Google Scholar]
  2. Tannenbaum S. R., Miller S. A. Effect of cell fragmentation on nutritive value of Bacillus megaterium protein. Nature. 1967 Jun 17;214(5094):1261–1262. doi: 10.1038/2141261a0. [DOI] [PubMed] [Google Scholar]

Articles from Applied Microbiology are provided here courtesy of American Society for Microbiology (ASM)

RESOURCES