title: Production of metabolites with antioxidant and emulsifying properties by antarctic strain Sporobolomyces salmonicolor AL₁.
abstract: The Sporobolomyces salmonicolor AL(1) Antarctic strain was cultivated and two bioproducts were obtained: exopolysaccharide and biomass. The biologically active substances ergosterol, torularhodin, torulene, β-carotene and CoQ(10) were extracted from the biomass and were quantified as follows: ergosterol 5.2 ± 0.2 mg/g, torularhodin 458.3 ± 24.5 μg/g, torulene 273.7 ± 14.5 μg/g, β-carotene 129.2 ± 7.3 μg/g and coenzyme Q(10) (CoQ(10)) 236.1 ± 12.1 μg/g. Their antioxidant activity was estimated according to the cathode voltammetry method. The most pronounced antioxidant activity (according to trolox) was exhibited by β-carotene 3.78, followed by CoQ(10) 3.60, both of them being the main contributors to the total extract activity of 3.19. The biologically active metabolites in combination with exoglucomannan as emulsifier were used for the creation of model emulsion systems characterised by great stability. The absorption of UVA rays by the model emulsions was studied.
authors.affiliation: Department of Chemistry and Biochemistry, Medical University, 15A V. Aprilov Blvd, Plovdiv 4002, Bulgaria. szd@abv.bg
authors.forename: Stela
authors.initials: S
authors.lastname: Dimitrova
authors.forename: Kostantsa
authors.initials: K
authors.lastname: Pavlova
authors.forename: Ludmil
authors.initials: L
authors.lastname: Lukanov
authors.forename: Elena
authors.initials: E
authors.lastname: Korotkova
authors.forename: Ekaterina
authors.initials: E
authors.lastname: Petrova
authors.forename: Plamen
authors.initials: P
authors.lastname: Zagorchev
authors.forename: Margarita
authors.initials: M
authors.lastname: Kuncheva
mesh_terms: D000864:Antarctic Regions; D000975:Antioxidants / Q000032:analysis / Q000378:metabolism*; D001487:Basidiomycota / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D002338:Carotenoids / Q000032:analysis / Q000378:metabolism; D045703:Emulsifying Agents / Q000032:analysis / Q000378:metabolism*; D012988:Soil Microbiology; D014451:Ubiquinone / Q000031:analogs & derivatives / Q000032:analysis / Q000378:metabolism; D019207:beta Carotene / Q000032:analysis / Q000378:metabolism
chemical_list: D000975:Antioxidants; D045703:Emulsifying Agents; D019207:beta Carotene; D014451:Ubiquinone; D002338:Carotenoids; C024989:coenzyme Q10; C078923:torularhodin