The need to use waste from the production of phytopreparations (meals) is due to the presence of a sufficient residue of biologically active substances and dietary fiber after solvent extraction. The use of plant waste for growing basidiomycetes has a rational and ecological approach. Growing mushrooms on waste leads to their rapid destruction, and the fruiting bodies in this case have a new chemical composition. In this study, it was shown that the use of Lavanda angustifolia meal as a substrate leads to an increase in the total fat content in Pleurotus ostreatus fruiting bodies by 5.8%. The composition of the total lipid fatty acids of Pleurotus ostreatus fruiting bodies when cultivated on narrow-leaved lavender meal and wheat straw showed variability under the influence of the substrate factor. Changes were observed in the accumulation of myristic, palmitic, margaric, stearic and oleic acids. A dependence was revealed for them: the more in the substrate, the more in the fruiting bodies, with a decrease in the content in the substrate block after cultivation. The major component in the fruiting bodies was linoleic acid, regardless of the substrate. The data obtained provide grounds for recommending the use of growing the basidylic fungus Pleurotus ostreatus on narrowleaved lavender meal not only to increase the natural rate of decomposition of the meal, but also as a raw material or product with a high content of linoleic acid.

Gornostai Tatyana Gennadievna, Candidate of Science (Pharmaceutics), Research Scientist, Siberian Institute of Plant Physiology and Biochemistry SB RAS, 132, Lermontov st., Irkutsk, 664033, Russian Federation, e-mail: t.g.gornostay@yandex.ru

Polyakova Marina Stanislavovna, Junior Research Scientist, Siberian Institute of Plant Physiology and Biochemistry SB RAS, 132, Lermontov st., Irkutsk, 664033, Russian Federation, e-mail: poljakova.m@gmail.com

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