THE UTILIZATION OFD-AMINO ACIDS BY YEASTS

Abstract
Ninety-one strains of yeast from 19 genera were examined for their ability to utilize single L- and D-amino acids as the nitrogen source for growth. Eighty strains from 17 genera were able to grow on at least one D-amino acid. The most readily utilized were alanine, α-amino butyric acid, leucine, and serine. D-Cysteine was used by few species. The utilization of D-amino acids is of little use in classifying or identifying yeasts.