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Physiological study on riboflavin production by hydrocarbon-utilizing Candida guilliermondii Wickerham
K M Ghanem1, S A Sabry, S Y Gamati
1Botany Department, Faculty of Science, Alexandria University, Egypt.
Zentralblatt Fur Mikrobiologie
|January 1, 1992
Abstract:
The production of riboflavin (vitamin B2) by Candida guilliermondii Wickerham cultivated on solar-containing medium was stimulated in the presence of corn oil (0.1 g%), arginine, phenylalanine (1 m mole/l) or CoSO4.7H2O (1000 micrograms/l). On the other hand, emulsifying agents strongly inhibited yeast growth and vitamin production. Similarly, FeSO4.7H2O and MnSO4.4H2O at 50 and 200 micrograms/l levels, respectively, also showed inhibitory effect. Among the tested purines, xanthine enhanced vitamin production.