Abstract
Generally, natural isolates of high ethanol producingSaccharomyces cerevisiae obtained by screening are used in alcoholic industries. The methods involved in their isolation and identification are elaborate. Antigenic analysis using antibodies raised against wholeSaccharomyces cells indicated species specificity of cell wall surface thermostable antigens. By affinity purification, the specific antibodies could be obtained and used for specific isolation ofS. cerevisiae. Antigenic studies using antibodies raised against isolated cell walls of fermentatively grownS. cerevisiae indicated the occurrence of thermolabile antigens common toSaccharomyces species. Higher concentrations of these antigens could be detected in thoseS. cerevisiae that had the ability for high ethanol production. The concentrations of these cell wall common antigens increased with increasing culture age and ethanol accumulation in culture broths. In younger yeast cells, the concentration could be increased by growing the cells in a medium containing added ethanol. Using dilutions of cross absorbed antibody specific for common antigens and Ouchterlony test, high ethanol producingS. cerevisiae could be identified.
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Umesh-Kumar, S., Nagarajan, L., Rehana, F. et al. The effect of ethanol on cell wall antigens ofSaccharomyces cerevisiae and specific isolation of high ethanol producing strains of this yeast, making use of a serological technique. Antonie van Leeuwenhoek 58, 57–66 (1990). https://doi.org/10.1007/BF02388080
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DOI: https://doi.org/10.1007/BF02388080