On the study of yeasts consortia ethanol producing abilities
- Pages
- 54-63
Abstract
The production of bioethanol from non-food feedstock is considered to be a promising alternative to conventional ethanol production from food crops. However, a number of significant technological drawbacks does not allow the industrial production of bioethanol. There is the problem of screening the most effective microorganisms-producers in particular. Due to multicomponent composition of substrate, the use of several strains of microorganisms is considered to be more effective than that of one strain. Thus, the aim of the study is to select yeast consortia capable of cocultivation, and to analyze their ability to produce ethanol. According to the aim of the study, the analysis was carried out to determine the biocompatibility of some ethanologenic microorganisms from the All-Russian collection of industrial microorganisms. The ability of ethanol generation by a yeast consortia, using the enzymatic hydrolyzate of delignified Miscanthus cellulose. The comparison of the ability of yeast consortia to generate ethanol depending on aeration conditions was made. The test samples were controlled for reducing sugars with spectrophotometry, while the resulting ethanol content was determined with gas chromatography. It has been found that the use of yeast consortia makes ethanol fermentation efficient, as evidenced by the significant bioconversion of reducing sugars.
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