Kvasny Prumysl, 1984 (vol. 30), issue 7
Pesticides as a possible precursors of N-nitrosamines.Peer-reviewed article
V. KELLNER, B. ©PINAR, J. ČULÍK, F. FRANTÍK
Kvasny Prum. 1984; 30(7): 145-148 | DOI: 10.18832/kp1984027 
Types of pesticides which can be converted to N-nitrosamines are discussed in the article. A briew review of analytic methods of n-nitrosamines with respect to pesticides is made. With respect to the limited level for N-nitrosamines in pesticides 1 ppm, according to Environmental protection Agency (U.S.A.), methods for the lowering level of nitrosamines in pesticides are discussed in greater details and some examples are given.(In Czech, English summary only)
Important standpoint of quality.Peer-reviewed article
H. BOCKER
Kvasny Prum. 1984; 30(7): 149-156 | DOI: 10.18832/kp1984028
A review of newer knowledges about changes of essential organic acids in grapes, must and wine is made. Qualitative and quantitative changes in the content of these acids, especially of tartic, malic and lactic acid, are described. On a base of studies, especially that from German authors, the desirable and undesirable microbial processes, that can have positive or negative effect on the quality of wine are described. At the end, classic and modern physical and chemical methods that permit a control of these processes are mentioned.(In Czech, English summary only)
Chemical treatment of straw for fooder and microbial aims. II. Production of yeast biomass on straw hydrolyzates.Peer-reviewed article
J. PLECHOVÁ, D. FABIÁNOVÁ, J. STANĚK, J. ®ĎÁRSKÝ, T. SOKOLOV
Kvasny Prum. 1984; 30(7): 156-160 | DOI: 10.18832/kp1984029
The results of the study showed further possibility of straw utilization, in addition to the usual procedures of its treatment. In case of the surplus of straw or in case of the lack of inland or imported protein fooder or in the lack of other agricultural wastes, the production of biomass can be performed in the fermentation procedure with straw. O achieve an economic evaluation of the procedure of the conversion of straw to protein fooder, experiments on pilot plant scale would be needed to be done. If it would be economic, all procedure would have to be mechanized.(In Czech, English summary only)