Toxin Degradation by Rumen Microorganisms: A Review

Degradation of soluble and insoluble proteins by Bacteroides amylophilus protease and by rumen microorganisms.

Various soluble and insoluble proteins (6.25 mg) were incubated at 37 C with partially purified protease from Bacteroides amylophilus (156 micrograms) in 2.0 ml of .1 M potassium phosphate buffer, pH 7.6, for 2, 4, 6 and 18 hr, and the liberated amino acids were determined by the ninhydrin method. Results showed that (1) although soluble, serum albumin and ribonuclease A were resistant to hydro...

Metabolism of glycine by rumen microorganisms.

Rumen microorganisms rapidly metabolized glycine at rates varying from 0.014 to 0.241 mumole of glycine per ml per min. The main metabolic products were carbon dioxide, acetic acid, and ammonia; little glycine was incorporated into bacterial protein. Use of carboxyl or methylene-labeled glycine showed that the carbon dioxide came mainly from the carboxyl of glycine, whereas both carbons of acet...

6 Aerobic Degradation by Microorganisms

Enhanced degradation of isofenphos by soil microorganisms

Laboratory experiments were conducted to investigate the enhanced degradation of isofenphos [ 1methylethyl 24 [ethoxy[ (1-methylethyl)amino]phosphinothioyl]oxy] benzoate] in soil and to elucidate the microbiology of this phenomenon. [U-ring-'4CIIsofenphos was most rapidly degraded in Iowa cornfield soils that had a history of isofenphos insecticide use. Between 13 and 42% of an applied dose of ...

Degradation of purines and pyrimidines by microorganisms.

[This corrects the article on p. 403 in vol. 40.].