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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018026595
pages 637-645

Phenolic Compounds of Inonotus rheades (Agaricomycetes) Mycelium: RP-UPLC-DAD-ESI/MS Profile and Effect of Light Wavelength on Styrylpyrone Content

Tat'yana G. Gornostai
Laboratory of Physiological Genetics, Siberian Institute of Plant Physiology and Biochemistry, Siberian Division, Russian Academy of Sciences, Irkutsk, Russia
Gennadii G. Borovskii
Laboratory of Physiological Genetics, Siberian Institute of Plant Physiology and Biochemistry, Siberian Division, Russian Academy of Sciences, Irkutsk, Russia
Nina I. Kashchenko
Laboratory of Medical and Biological Research, Institute of General and Experimental Biology, Siberian Division, Russian Academy of Sciences, Ulan-Ude, Russia
Daniil N. Olennikov
Laboratory of Medical and Biological Research, Institute of General and Experimental Biology, Siberian Division, Russian Academy of Sciences, Ulan-Ude, Russia

ABSTRACT

The phenolic compounds of Inonotus rheades (Pers.) Bondartsev and Singer (Hymenochaetaceae), a typical xylotrophic basidiomycete, and accumulation of styrylpyrones in mycelium under the influence of light of different wavelengths were investigated. Six styrylpyrones (cis- and trans-hispidin, cis- and trans-bisnoryangonin, and phellinins A1 and A2) and 5 bis(styrylpyrones) (3,14'-bishispidinyl, hypholomin B, 3-bisnoryangonyl-14'-hispidin, 1,1-distyrylpyrylethane, and rheadinin) were detected in the extract of I. rheades mycelium using reversed phase ultra-performance liquid chromatography with diode array detection and electrospray ionization mass spectrometry (RP-UPLC-DAD-ESI/MS). The results showed that the maximal content of styrylpyrones was observed under the influence of blue light (8.10 mg/g of dry mycelium weight). Moreover, hispidin was the dominant compound in all experimental groups. Pigmentation intensity gradually decreased after shifting the light spectrum into darkness. It can be concluded that cultivation of I. rheades mycelium under the blue part of the light spectrum leads to the accumulation of styrylpyrones that have nutraceutical and medicinal significance.


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