Kvasny Prum. 1991; 37(5): 137-141 | DOI: 10.18832/kp1991017

Production of Kluyveromyces marxianus on whey.Peer-reviewed article

M. STREĎANSKÝ, E. ŠTURDIK, M. TOMÁŠKA, T. MALIAR, Ľ KREMNICKÝ

23 strains Kluyveromyces marxianus was screened for production of biomass and β-galactosidase. Straín CCY 51-1-1 was selected. Optimalized medium for cultivation was deproteinized sweet whey with 1 % ammonium sulfate and 0,2 % yeast extract. Yield coefficient Y_xs = 0,19 after 12 h fermentation with oxygen limitation was obtained in 1500 1 fermentor. Increasing of partial pressure to level 15 % improved Y_xs on 0,24 and shorted fermentation time on 10 h, but specific activity of  β-galactosidase in cells decreased by 24 %.
(In Slovak, English summary only)

Keywords: whey, Kluyveromyces marxianus, yeasts biomass, β-galactosidase

Published: May 1, 1991