A total of 24 yeast strains were tested for their capacity to produce ethanol, and of these, 8 were characterized by the best ethanol yields (73.11-8 1.78%). The most active mutant Saccharomyce s cerevisiae ER-A, resistant to ethanol stress, was characterized by high resistance to acidic (pH 1.0 and 2.0), oxidative (1 and 2% of H2O2), and high temperature (45 and 52 degrees C) stresses. During ...

A culture of Saccharomyces cerevisiae M30 entrapped in loofa-reinforced alginate was used for continuous ethanol fermentation in a packed-bed reactor with initial sugar concentrations of 200-248 g/L. Maximum ethanol productivity of 11.5 g/(L·h) was obtained at an ethanol concentration of 57.4 g/L, an initial sugar concentration of 220 g/L and a dilution rate (D) of 0.2 h(-1). However, a maximum...

The influence of the ethanol concentration on the composition and activity of a developed biofilm in a denitrifying submerged unidirectional filter was studied. Process yields (represented as inorganic nitrogen removal), total platable bacteria, denitrifying bacteria, nitrate- and sulphate-reducing bacteria and denitrifying activity (N2O production) were compared at different ethanol concentrat...

The effect of CO2 pressure on commercial S.cerevisiae cells viability and on the rate of ethanol production in yeast, has been studied in batch cultures under 1,10 and 18 bar of CO2 pressures. The results show that the effect of CO2 pressure on ethanol productivity strongly depends on the temperature, glucose and starting biomass concentration and pressure itself. Under atmospheric CO2 pressure...

The effects of zein ratio, concentration of glycerol, liquid-solid ratio, ethanol concentration, pH and heat-treatment temperature on the properties of zein/wheat gluten composite films were researched. The results showed that elongation (E) increased with an increase in glycerol or ethanol concentrations, but it first increased and then decreased with increasing zein/wheat gluten ratio, heat-t...

Here, we report the results of a study on the effects of ethanol exposure on human red blood cells (RBCs) using quantitative phase imaging techniques at the level of individual cells. Three-dimensional refractive index tomograms and dynamic membrane fluctuations of RBCs were measured using common-path diffraction optical tomography, from which morphological (volume, surface area, and sphericity...

HIROSE, T., HIGASHI, R., IKEDA, H., TAMIIRA, K. and Suzuxi, T. Effect of Ethanol on Adrenaline anal Noradrenaline Secretion of the Adrenal Glandin the Dog. Tohoku J. exp. Med., 1973, 109 (1), 85-88 Conscious dogs were infused intravenously with ethanol solution in a dose of 0.7-1.0 g/kg. Before and after the ethanol infusion, the adrenal venous blood samples were collected and analyzed for adre...