Kvasny Prumysl, 1984 (vol. 30), issue 6
Problems of metals in beer - Al, As, Cd, Pb.Peer-reviewed article
V. KELLNER, P. ČEJKA, F. FRANTÍK
Kvasny Prum. 1984; 30(6): 121-124 | DOI: 10.18832/kp1984023 
The significance of the individual metals of Al, As, Cd and Pb from the standpoint of brewing as well as that of hygiene is discussed. Concentrations of these four elements were determined in 31 samples of 12%, 10% and 8% beer commercially produced inCzechoslovakia. 107 determinations were made on the whole. The results are compared with those published in the literature and with the Czechoslovak Hygienic Other. All the concentrations determined experimentally were below the maximum permitted value.(In Czech, English summary only)
Brewing in Republic of Mosambic.Peer-reviewed article
R. ŠUSTÁK
Kvasny Prum. 1984; 30(6): 124-128 | DOI: 10.18832/kp1984024
Author briefly describes characteristics, structure and speciality of brewing in Republic of Mosambic. The output of beer in the last two years is given. In beer, structure of assortment, technical inspection and quality control in breweries and some results of Czechoslovak-Mosambic cooperation in brewing are discussed.(In Slovak, English summary only)
Biotin and biochemical activity of yeast cell.Peer-reviewed article
V. JIRKŮ, A. ČEJKOVÁ, G. BASAŘOVÁ
Kvasny Prum. 1984; 30(6): 128-132 | DOI: 10.18832/kp1984025
Biotin was first isolated and identified as a yeas growth factor in 1935. Since then, its biological role, structure, and mechanism of action have been investigated vigorously. Biotin is an essential cofactor for a small number of enzymes that have diverse metabolic functions. In this connection, this review deal with the development of our knowledge of the biochemical processes dependent of our knowledge of the biochemical processes dependent on biotin, biosynthesis of biotin, biotin vitamers and cellular transport of biotin. Attention is also poid to the effects of biotin deficiency, especially in relation to the industrial cultivation of yeasts.(In...
Biosynthesis of L-lysine with psophocarpus flour as nitrogen source.Peer-reviewed article
F. SMÉKAL, M. BÁRTA, V. BULANT, S. ALBERT
Kvasny Prum. 1984; 30(6): 133-135 | DOI: 10.18832/kp1984026
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...