Kvasny Prum. 1981; 27(10): 227-231 | DOI: 10.18832/kp1981043

Activity of bakers yeast and further possibility of its increase.Peer-reviewed article

M. RYCHTERA, A. PICHOVÁ

The paper deals with some of main possibilities of increasing the activity of baker's yeasts. First of all the question aims at the optimization of composition of growth factors in cultivation media. It is supposed that growth factors deficiency induces the significant change in the level of cell lipids and can therefore affect the synthesis of main biosynthetic pathways of yeast cell. In experimental work was evaluated: biomass yield, activities of α-D-glucosidase (maltase), β-D-fructofuranosidase (saccharase, invertase) and respiration activities of yeast. The relationship among maltase activity, technological activity and α-glucoside permease activity is discussed. From growth factors was tested the influence of biotin, thiamine, myo-inositol, pyridoxin, pantothenic acid and nicotinic acid. Biotin deficiency at both strains brought about decrease of all activities and respiration rates. Results support the idea of homogenization and mixing of molasses according to content of vitamins.
(In Czech, English summary only)

Keywords: bakers yeast, activity

Published: October 1, 1981