After a serial of UV, EMS and NTG mutagenesis, a mutant named MM of the red marine yeast strain Rhodotorula sp. hidai was obtained. The mutant MM could produce 603.93 μg g-1 of carotenoid within 5 days in the medium ...After a serial of UV, EMS and NTG mutagenesis, a mutant named MM of the red marine yeast strain Rhodotorula sp. hidai was obtained. The mutant MM could produce 603.93 μg g-1 of carotenoid within 5 days in the medium containing 4.0 g sucrose, 1.5 g yeast extract, 0.1 g MgSO4, and 100 mL of sea water, with pH 6.0 and at 30 ℃, while only 213.18 μg g-1 of carotenoid was pro-duced by the wild type under the same conditions.展开更多
Objective:To evaluate the antifungal activity of four honeys of different types from Algeria against pathogenic yeast i.e.Candida albicans(C.albicans) and Rhoddtorula sp.Methods:Four Algeria honeys of different botani...Objective:To evaluate the antifungal activity of four honeys of different types from Algeria against pathogenic yeast i.e.Candida albicans(C.albicans) and Rhoddtorula sp.Methods:Four Algeria honeys of different botanical origin were analvzed to test anlilungal effect against C.albicans,and Rhodotorula sp.Different concentrations(undiluted,10%,30%,50%and 70%w/v) of honey were studied in vitro for their antifugal aclivity using C.albicans and Rhodotorula sp.as fungal strains.Results:The range of the c liameter of zone of inhibition of various concentrations ol tested honeys was(7-23 mm) for Rhodotorula sp.,while C.albicans showed clearly resistance towards all concentrations used.The MICs of tested honey concentrations against C.albicans and Rhodotorula sp.were(70.09-93.48)%and(4.90-99.70)%v/v,respectively.Conclusions:This study demonstrales that,in vitro,these natural products have clearly an antifungal activity against Rhodotorula sp.and C.albicans.展开更多
文摘After a serial of UV, EMS and NTG mutagenesis, a mutant named MM of the red marine yeast strain Rhodotorula sp. hidai was obtained. The mutant MM could produce 603.93 μg g-1 of carotenoid within 5 days in the medium containing 4.0 g sucrose, 1.5 g yeast extract, 0.1 g MgSO4, and 100 mL of sea water, with pH 6.0 and at 30 ℃, while only 213.18 μg g-1 of carotenoid was pro-duced by the wild type under the same conditions.
基金supported by project CNEPRU,Institute of Veterinary Sciences(IVS),University Ibn-Khaldoun(TIARET),Algeria(grant No.F023 2009/0009)
文摘Objective:To evaluate the antifungal activity of four honeys of different types from Algeria against pathogenic yeast i.e.Candida albicans(C.albicans) and Rhoddtorula sp.Methods:Four Algeria honeys of different botanical origin were analvzed to test anlilungal effect against C.albicans,and Rhodotorula sp.Different concentrations(undiluted,10%,30%,50%and 70%w/v) of honey were studied in vitro for their antifugal aclivity using C.albicans and Rhodotorula sp.as fungal strains.Results:The range of the c liameter of zone of inhibition of various concentrations ol tested honeys was(7-23 mm) for Rhodotorula sp.,while C.albicans showed clearly resistance towards all concentrations used.The MICs of tested honey concentrations against C.albicans and Rhodotorula sp.were(70.09-93.48)%and(4.90-99.70)%v/v,respectively.Conclusions:This study demonstrales that,in vitro,these natural products have clearly an antifungal activity against Rhodotorula sp.and C.albicans.
