Kvasny Prum. 1984; 30(6): 133-135 | DOI: 10.18832/kp1984026

Biosynthesis of L-lysine with psophocarpus flour as nitrogen source.Peer-reviewed article

F. SMÉKAL, M. BÁRTA, V. BULANT, S. ALBERT

Biosynthesis of L-lysine with the strains Corynebacterium glutamicum and Brevibacterium flavum were studied in media with a hydrolysate of psophocarpus flour. This hydrolysate served as the complex nitrogen source. The flour was obtained from grinding of beans of Psophocarpus tetragonolobus. The analysis of aminoacids proved a possibility of the replacement of peanut flour with this non-standard nitrogen source. The production of L-lysine in 96 h´s cultivations with Corynebacterium glutamicum was 44 - 46 g . l^-1 while with Brevivacterium flavum was between 30 - 33 g.l^-1. The production of L-lysine on a laboratory scale in 2 l tanks was 70 g . l^-1. Psophocarpus flour is a significant nitrogen source utilizable in the fermentation industry.(In Czech, English summary only)

Keywords: L-lysin, biosynthesis, Corynebacterim glutamicum, Brevibacterium flavum

Published: June 1, 1984