Kvasny Prumysl, 1983 (vol. 29), issue 10


Problem of pesticide. I. Classification of pesticides and their application in agriculture.Peer-reviewed article

B. ©PINAR, V. KELLNER, J. ČULÍK

Kvasny Prum. 1983; 29(10): 217-220 | DOI: 10.18832/kp1983039  

Thirds article is the first of three publications describing the problems of pesticides in agriculture. The classification of pesticide was made according to their biological efficiency. The most significant agents of the basic groups of pesticides used in Czechoslovakia are reviewed.(In Czech, English summary only)

The basic aspects of yeast cell wall study.Peer-reviewed article

V. JIRKŮ, G. BASAŘOVÁ

Kvasny Prum. 1983; 29(10): 220-224 | DOI: 10.18832/kp1983040  

Our present understanding of the nature of yeast cell wall is based on the information obtained from chemical and biochemical studies, including enzymatic digestion of wall and from cytological investigations. In this connection, this review deals with the development of our knowledge of the basic structural components and biochemistry of yeast cell wall. Attention is also paid to the biosynthesis of principal polysaccharide components as well as cell wall biosynthesis. In addition, the article covers briefly the major aspects of cell wall biodegradation by exogenous lytic enzymes, especially by gastric juice by the garden snail, Helix pomatia.(In...

Microbial contamination of fodder yeast production from petrochemical raw materials.Peer-reviewed article

J. RYBÁŘOVÁ

Kvasny Prum. 1983; 29(10): 225-227 | DOI: 10.18832/kp1983041  

The most frequent contamination in fodder yeast production are bacteria and yeasts. The contamination by molds can be neglected. According to published results, the effect of bacterial contamination in fodder yeast production from petrochemical raw material can manifest itself by one of the following manners: Bacteria contaminated and their metabolites resp., have inhibitory or stimulatory effect on yeasts or are without any effect. The present results of the studies of bacterial contamination during continuous production of fodder yeast from synthetic ethanol show that bacteria have no unsuitable effect on economic parameters of the culture. From...

New types of non alcoholic beverages developed in Research and Development Center Nealko Olomouc.Peer-reviewed article

M. ZBOŘIL, M. HEBELKA, J. MALASKA, M. ČECHOVÁ

Kvasny Prum. 1983; 29(10): 228-230 | DOI: 10.18832/kp1983042  

The article describes the activity of the Research and Development Center of Non-Alcoholic Beverages inOlomouctown. New types of non-alcoholic beverage developed in years 1979 - 1982 are described. A review of the best types procedure from imported raw material is given. These beverages are compared to those commercially produced inCzechoslovakia. Further attention is focused on new beverages performed from domestic raw materials with higher stability and on low energy beverages. At the end some problems with obstruct the speed of an enlargement of the new beverages on the domestic market are discussed.(In Czech, English summary only)

Changes in biosynthetic activity of Aspergillus niger due to repeated treatment with mutagens.Peer-reviewed article

M. MUSÍLKOVÁ, E. UJCOVÁ, L. SEICHERT, V. KRUMPHANZL

Kvasny Prum. 1983; 29(10): 230-232 | DOI: 10.18832/kp1983043  

The mutant producing about 100 % more of citric acid that the original strain Aspergillus niger K 10 under submerged cultivation conditions were obtained by the repeated action of the mutagens.(In Czech, English summary only)