fermentation

Optimization of Hydrolysis in Ethanol Production from Bamboo

This research involved optimizing acid hydrolysis in the development of ethanol, a promising alternative energy source for restricted crude oil, from lignocellulosic materials (bamboo). The conversion of bamboo to ethanol can mainly be accomplished through three process steps: pretreatment of bamboo wood for the removal of lignin and hemicellulose, acid hydrolysis of pretreated bamboo for the conversion of cellulose into sugar reduction (glucose) and fermentation of sugars into ethanol using anaerobic Saccharomyces cerevisiae.

BIOCONVERSION OF MOLESSES TO ETHANOL BY REACTIVE YEAST

The process of fermentation of beet molasses to ethanol using dry alcohol yeast Deltaferm AL-18, reactivated in wort with different dry matter content was studied. It is shown that the fermentative activity of these yeasts is higher than the generative one. The concentration of ethanol in the brew is maximum under the condition of reactivation of yeast in the wort (22 % CF). The density of yeast after fermentation decreases proportionally if the yeast is activated in the wort with a higher concentration.

IMPROVEMENT OF TECHNOLOGY OF THE LIQUID WASTE PURIFICATION FROM FERMENTATION PRODUCTION

One of the areas of waste disposal of fermentation industries is anaerobic fermentation and biogas production, which becomes increasingly attractive for researchers not only because of the global energy crisis but also the environmental one. Biogas production is based on methane fermentation fundamentally different from other types of fermentation, which creates certain difficulties in its implementation on a large scale.

Optimization Studies on Biosynthesis of Citric Acid by One-Factor-at-a-Time

In the presented study, the significant operating variables regarding biosynthesis of citric acid process were assessed and their effects on the process yield were analysed. These variables, namely, initial sucrose concentration, methanol concentration, inoculum density, initial medium pH, spore age, stirrer speed, incubation period, fermentation temperature, particle size distribution, oxygen flow rate, and moisture content have significant influence on bioprocess of citric acid production.