BIOTECHNOLOGICAL ASPECTS OF BIOCONVERSION OF POST-EXTRACTION BIOMASS AND CELL CULTURE ORTHILIA SECUNDA (L.) HOUSE WITH BASIDIOMYCETES

Abstract

The possibility of bioconversion after the extraction residue of the medicinal plant Orthilia secunda (initial plant biomass and callus after extraction of biologically active substances) by fast growing strains of basidiomycetes Tv2-16K Trametes versicolor and Pe-17T Pleurotus eryngii was studied. The main target products are: a mycelial-plant product with a reduced content of the indigestible fraction and enriched in protein and full-fledged fruit bodies. Fungi colonize plant waste with a radial growth rate of 2.0–2.3 mm / day and a growth rate of 65–77 units. Phenol oxidase activity is 0.7–1.2 units/g·s, depending on the type after the extraction residue. In substrates after biodegradation, the proportion of difficult hydrolysable polysaccharides, easily hydrolysable polysaccharides, and lignin is on average 1.6 times lower than in the original substrate. The content of protein and extractive substances is significantly higher, especially after the extraction residue of O. secunda callus under the influence of the T. versicolor strain Tv2-16K: 12.8 and 24.3%, respectively, of the mass of dry substrate. Fruit bodies of P. eryngii strain Pe-17T were obtained on various compositions of plant substrates. The maximum fruit formation was noted on four-component substrates containing two types after extraction residues of O. secunda, wheat bran, birch or aspen sawdust: the average weight of fruit bodies from one block was 230–236 g; biological efficiency – 46–47.2%.