Kvasny Prumysl, 1994 (vol. 40), issue 1
Sedimentative and turbidimetric assessment of yeast concentration.Peer-reviewed article
J. ŠAVEL, M. PROKOPOVÁ
Kvasny Prum. 1994; 40(1): 9-12 | DOI: 10.18832/kp1994001 
Pitching yeast concentration is assessed by standard centrifugation of yeast for 10 min (3000 r.p.m) in flat-bottomed glass cells. Relative yeast concentration is expressed as sediment volume fraction on sample total volume, read after centrifugation. For turbidimetric yeast assessment, 0,4 ml of 20% NaOH was added to 4 ml sample containing fermented hopped wort, fermenting or secondary fermented beer; after stirring-up an absorbance value was measured at 800 nm. NaOH activity effects sludge dissolution contained in hopped wort and beer.(In Czech, English summary only)
Inulinase activity assessment by using eS-test inulinase.Peer-reviewed article
J. ZEMEK, V. HOMOĽOVÁ
Kvasny Prum. 1994; 40(1): 13-15 | DOI: 10.18832/kp1994002
The results of submitted work refer to availability of the es-test inulinase for inulinase enzyme activity assessment, even when ß-D-fructofuranosidase (invertase) is presented. The eS-test inulinase thus completes standard methods used for activity assessment of biotechnologically significant hydrolases.(In Czech, English summary only)