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Updated: Jul 15, 2026

Genetic Engineering of an Unconventional Yeast for Renewable Biofuel and Biochemical Production
Published on: September 20, 2016
Production of riboflavin (vitamin B2) by hydrocarbon-utilizing yeasts
S A Sabry1, A H el-Refai, S Y Gamati
1Botany Department, Faculty of Science, Alexandria University, Egypt.
Abstract:
Candida guilliermondii Wickerham was found to be superior to the other yeasts tested for growth yields and riboflavin production when cultivated on different carbohydrate and hydrocarbon-containing media. Among the refined petroleum fractions and cheap hydrocarbons tested, solar was selected as a carbon source best suited for the fermentation process. The highest growth yield and riboflavin output (10.64 mg/100 ml) by C. guilliermondii Wickerham were achieved by placing aliquots of 20 ml medium (pH 6.0) in 100 ml Erlenmeyer flasks and incubating the inoculated medium at 30 degrees C for 14 days in the dark.
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