Results of Low β- and γ Irradiation Doses on Saccharomyces Cerevisiae Fermetation Process

摘要

Four different strains of Saccharomyces cerevisiae yeast samples were B and y irradiated using a “Sr nuclear source. The samples were irradiated for five hours acquiring a 12 Gray irradiation doses. The irradiated and non-irradiated samples were subject to a fermentation process conducted at 28°C and pH=5.8 for 96h. The fermentation parameters (carbon dioxide level and maltase activity) were recorded during the fermentation. For all the irradiated samples a significant increase in the fermentation parameters was recorded, as compared to the non-irradiated ones. The results of this ongoing study reveal that the small irradiation doses used in the work reported here produced significant increase of the fermentation parameters.