Biomass production from Kluyveromyces spp. by using cheese whey

Volume 17 , Issue 4 , December 2015 , Pages 85-94

Authors

¹ Food Science Dept. Faculty Of Agricultural Science University Of Sulaimani , Kurdistan Region- Iraq

Cheese whey was used as a medium for producing yeast biomass from Kluyveromyces

lactis DSM 70800 and Kluyveromyces fragilis. The best conditions for yeast biomass

production were 35oC with agitation speed of 150 and 200 rpm for Kluyveromyces fragilis

and Kluyveromyces lactis DSM 70800 respectively. Both strains can grow in a wide range

of pH. The maximum biomass yield recorded when whey with pH 6.5 was used. The crud

protein based on dry weight was relatively high and the crud protein % of Kluyveromyces

lactis DSM 70800 (50.56%) was insignificantly higher than that was obtained for

Kluyveromyces fragilis (49.53%) while the protein yield was insignificantly higher for

Kluyveromyces fragilis. On the other hand, the essential and non-essential amino acids

were present in a various amount, among these amino acids arginine was present in high

level in both strains which has the good nutritive value especially for children.

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