Sequential statistical methods were used to maximise carotenoid production by a strain of Rhodotorula mucilaginosa, isolated from the Brazilian ecosystem. Initially, a factorial 2(5-1) experimental design was used, and the variables were pH and the levels of glucose, yeast extract, MgSO4.7H2O and KH2PO4. The nitrogen source (yeast extract) was the most important variable in enhancing carotenoid...

microbial oil has high similarity to the oil obtained from plants and animals. they are renewable sources that can be used for different purposes such as production of biofuels. biofuels are renewable, biodegradable, and nontoxic, which makes them highly environmentally friendly. producing oil from yeasts has more advantages than that from plants. accordingly, isolation of oleaginous yeasts wit...