BIOSYNTHESIS OF OILS

doi: 10.25712/ASTU.2072-8921.2021.03.011

Abstract

 In the review article, we examined foreign studies and methods of obtaining microbial oil suitable for use in food, nutraceutical purposes, as well as for medical purposes. Microbial oil is obtained by deep fermentation with strains of microorganisms capable of accumulating more than 20 % of their dry biomass in the form of lipids or free fatty acids. Microbial oils are obtained by cultivating oily yeast together with microalgae or on various nutrient media: cheese-whey, molasses, starch waters, etc. Filamentous fungi, oily yeast isolates and immobilized lipases are also used to obtain microbial oil. Microorganisms resistant to pH changes are of great interest. The cost of production will decrease if these microorganisms are used. The yield of free fatty acids, microbial oil, the content of polyunsaturated fatty acids varies under different cultivation conditions and fermentation modes. The obtained microbial oils contain a lot of palmitic, oleic, linoleic and linolenic acids (up to 47 %). The maximum oil yield was 64.8 %.