Studies on Hiochi (Part 11)

Requirements of peptides for the growth of hiochi-bacteria

Abstract

Sixty-three strains of hiochi-bacteria were examined for their requirements of peptides necessaly for growth, and following results were obtained.
1) Hetero-fermentative genuine hiochi-bacteria essentially required peptides for the growth.
2) Homo-fermettative genuin hiochi-bacteria promotively required peptides for the growth.
3) Hiochi-natured lactobacilli did not generally required peptides for the growth.
Bacto-Tryptone was fractionated by using ion-exchahge resins (Dowex 50W) which had different cross-linkages, and each fractions were examined of its growth-promotive activities. From the results, it was assumed that the peptides which were required for the growth of hiochi-bacteria were composed of a few amino-acid residue.