Screening of Yeasts and Cultural Conditions for Cell Production from Palm Oil

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Abstract
Many yeast strains which grew on palm oil were obtained from natural sources. A yeast strain capable of assimilating crude palm oil effectively was isolated from field soil, and named Torulopsis candida Y-128. When the substrate was emulsified with a nonionic surfactant, yeast cell growth was promoted. In a shaking culture of this strain, corn steep liquor as a natural nutrient was good for cell growth, and ammonium sulfate was more effective than any other nitrogen source. The protein content of dried cells was over 40% and amino acids of the yeast protein were well-balanced.