Related Experiment Video
Updated: Aug 29, 2026

Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol
Published on: October 24, 2016
[Alkalitolerant yeasts from natural biotopes]
G A Lisichkina1, I P Bab'eva, D Iu Sorokin
1Soil Science Department, Moscow State University, Vorob'evy gory, Moscow, 119992 Russia.
Abstract:
Using a solid nutrient medium containing alkaline buffer (pH 10) and an antibiotic, alkalitolerant yeasts were isolated from samples of soda-rich saline soils (solonchaks) of Armenia (Arazdayan) and the Transbaikal Region (the Kungur Steppe). The species diversity of the yeast populations of the tested soda-rich soils was relatively insignificant. They only contained alkalitolerant representatives of asporogenic capsulated yeasts belonging to the species Cryptococcus laurentii, C. albidus, Rhodotorula glutinis, R. mucilaginosa, and Sporobolomyces roseus. C. laurentii representatives clearly dominated the isolates obtained, their number exceeding that of the other species by 2-3 orders of magnitude. All of the isolates grew on acidic wort agar, suggesting that they did not include obligate alkaliphiles.
Related Concept Videos
Bioreactor Controls-III
Microbes in Food Production
Microbes in Beverage Production
Production of Alcohol
Factors Influencing Microbial Growth: pH
Diversity of Archaea I

