In the present scenario of depleting oil reservoir, microbial oil has gained much attention over plant and animal based sources. Among different microorganisms, yeast strains are considered superior source for oil production. The cost of oil produced by yeast could further be lowered using cheaper agro-waste and biomass as substrate. This review focuses on key topics which will help in gaining better understanding to enhance lipid production using yeast strains. The effects of oleaginous yeast co-culturing with microalgae, different cheap carbon sources of biomass, and types of yeast species on oil production were highlighted in the review. An overview of mechanisms of oil production from biomass, viz. pretreatment of biomass, fermentation and oil recovery are also provided. Constraints encountered during the oleogenesis or microbial oil accumulation and their probable solutions along with a section on different by-products obtained during oleo-genesis are also discussed.
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Chaturvedi et al. (2018) studied this question.
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