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[Analysis of parameters for optimum of ergosterol fermentation].

Parameters in the process of ergosterol fermentation are studied. The relationship between biomass, ergosterol content in Saccharomyces cerevisiae and parameters such as DO, pH, OUR, glucose concentration, are discussed. Because of its good manipulation in yeast fermentation process, Do can thus serve as an effective control parameter. DO at about 12% (+/- 1%) can enhance the total yield of ergosterol considerably.