title: Physiological study on riboflavin production by hydrocarbon-utilizing Candida guilliermondii Wickerham.
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.
authors.affiliation: Botany Department, Faculty of Science, Alexandria University, Egypt.
authors.forename: K M
authors.initials: KM
authors.lastname: Ghanem
authors.forename: S A
authors.initials: SA
authors.lastname: Sabry
authors.forename: S Y
authors.initials: SY
authors.lastname: Gamati
mesh_terms: D000596:Amino Acids / Q000494:pharmacology; D002175:Candida / Q000187:drug effects / Q000378:metabolism*; D003470:Culture Media; D005079:Excipients / Q000494:pharmacology; D005227:Fatty Acids / Q000494:pharmacology; D006838:Hydrocarbons / Q000378:metabolism*; D010938:Plant Oils / Q000494:pharmacology; D011687:Purines / Q000494:pharmacology; D012256:Riboflavin / Q000096:biosynthesis*; D013501:Surface-Active Agents / Q000494:pharmacology; D014131:Trace Elements / Q000494:pharmacology; D014815:Vitamins / Q000494:pharmacology
chemical_list: D000596:Amino Acids; D003470:Culture Media; D005079:Excipients; D005227:Fatty Acids; D006838:Hydrocarbons; D010938:Plant Oils; D011687:Purines; D013501:Surface-Active Agents; D014131:Trace Elements; D014815:Vitamins; D012256:Riboflavin