Full Article: PDF
Scientific Object Identifier: http://s-o-i.org/1.1/TAS-09-101-95
DOI: https://dx.doi.org/10.15863/TAS.2021.09.101.95
Language: Russian
Citation: Khramchankova, V. M. (2021). Photo-absorbent properties of licen extracts. ISJ Theoretical & Applied Science, 09 (101), 705-710. Soi: http://s-o-i.org/1.1/TAS-09-101-95 Doi: https://dx.doi.org/10.15863/TAS.2021.09.101.95 |
Pages: 705-710
Published: 30.09.2021
Abstract: Photoprotective properties of water, ethanol, methanol, acetone, benzene, hexane, ethyl acetate and chloroform extracts from lichens Cladonia furcata, C. rangiferina, Evernia mesomorpha, Hypogymnia tubulosa and Parmelia sulcata was studied. Alcoholic solutions of aqueous and hexane lichens extracts poorly absorb ultraviolet light in the range of 290 ? 400 nm. Ethanol, methanol, acetone, benzene, ethyl acetate and chloroform extracts absorb UV-B well and poorly absorb UV-A. For the extracts, the values ??of SPF, critical wavelength (?crit) and UV-A / UV-B ratios were determined. It is concluded that the studied lichen extracts are not photoprotective.
Key words: lichen extracts; sunscreen factor (SPF); critical wavelength (?crit); extracts alcohol solutions; absorption spectra; UV-A / UV-B ratio.
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