Clearing up the photochemistry of resveratrol: Effect of the solvent

Abstract Polyphenolic substances synthesized by plants are generally involved in protection against UV radiation and the attack of pathogenic microorganisms. Resveratrol (3,5,4′-trihydroxystilbene, RSV) is synthesized in its <i>trans-form</i> (<i>trans</i>-RSV) in plants unde...

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Detalles Bibliográficos
Autores principales: Gaspar Tosato, Maira, Vicendo, Patricia, Thomas, Andrés Héctor, Lorente, Carolina
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Exactas
Química
Resveratrol
Photochemistry
UV radiation
Photoproducts
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124874
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124874
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Resveratrol
Photochemistry
UV radiation
Photoproducts
spellingShingle Ciencias Exactas
Química
Resveratrol
Photochemistry
UV radiation
Photoproducts
Gaspar Tosato, Maira
Vicendo, Patricia
Thomas, Andrés Héctor
Lorente, Carolina
Clearing up the photochemistry of resveratrol: Effect of the solvent
topic_facet Ciencias Exactas
Química
Resveratrol
Photochemistry
UV radiation
Photoproducts
description Abstract Polyphenolic substances synthesized by plants are generally involved in protection against UV radiation and the attack of pathogenic microorganisms. Resveratrol (3,5,4′-trihydroxystilbene, RSV) is synthesized in its <i>trans-form</i> (<i>trans</i>-RSV) in plants under stress conditions like infections or UV exposure and has attracted attention as an antioxidant agent. <i>Trans</i>-RSV was irradiated with both UV-A (λ<sub>MAX</sub> = 365 nm) and UV-B (λ<sub>MAX</sub> = 300 nm) radiation in aqueous and ethanolic solutions at room temperature. The reactions were followed by UV–Vis spectrophotometry, HPLC with UV and fluorescence detection, and UPLC coupled to mass spectrometry detection. In both solvents the irradiation caused the fast isomerization of <i>trans</i>-RSV to cis-RSV. In ethanolic solutions, a strong fluorescent compound, identified as resveratrone (RSVT) was detected independently on the irradiation wavelength. In aqueous solutions, RSVT was not detected in both irradiation conditions. However, in aqueous/ethanol mixtures the amount RSVT was found to be proportional to the amount of ethanol in the solution. Under UV-B irradiation, both in ethanolic or water solutions other products were detected. Our results demonstrated that RSV is photosensitive and its photochemistry depends on the solvent nature and on the irradiation wavelength.
format Articulo
Articulo
author Gaspar Tosato, Maira
Vicendo, Patricia
Thomas, Andrés Héctor
Lorente, Carolina
author_facet Gaspar Tosato, Maira
Vicendo, Patricia
Thomas, Andrés Héctor
Lorente, Carolina
author_sort Gaspar Tosato, Maira
title Clearing up the photochemistry of resveratrol: Effect of the solvent
title_short Clearing up the photochemistry of resveratrol: Effect of the solvent
title_full Clearing up the photochemistry of resveratrol: Effect of the solvent
title_fullStr Clearing up the photochemistry of resveratrol: Effect of the solvent
title_full_unstemmed Clearing up the photochemistry of resveratrol: Effect of the solvent
title_sort clearing up the photochemistry of resveratrol: effect of the solvent
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/124874
work_keys_str_mv AT gaspartosatomaira clearingupthephotochemistryofresveratroleffectofthesolvent
AT vicendopatricia clearingupthephotochemistryofresveratroleffectofthesolvent
AT thomasandreshector clearingupthephotochemistryofresveratroleffectofthesolvent
AT lorentecarolina clearingupthephotochemistryofresveratroleffectofthesolvent
bdutipo_str Repositorios
_version_ 1764820451239919618

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