Recognition of antioxidants and photosensitizers in Dyssodia pinnata by EPR spectroscopy

Please use this identifier to cite or link to this item: http://rdu.iquimica.unam.mx/handle/20.500.12214/1219

Title:	Recognition of antioxidants and photosensitizers in Dyssodia pinnata by EPR spectroscopy
Author:	ROMO DE VIVAR ROMO, ALFONSO
Author ID:	info:eu-repo/dai/mx/cvu/749
Abstract:	Terthiophenes were obtained from hexane (DPH) and acetone (DPA) extracts, and flavonoids from DPA and methanol (DPM) extracts. The interaction with Cu2+ of extracts and isolated compounds of Dyssodia pinnata showed two effects in EPR: reduction and chelation; flavonoids exhibited both effects, while terthiophenes showed only reduction. DPA, DPM, and flavonoids were active in DPPH and TBARS assays. Quercetagetin‐7‐O‐β‐glucoside showed the highest antioxidant and chelating activities, 3‐glycosidated flavonoids were less active. Upon irradiation extracts and terthiophenes induced 1O2 formation.
Issue Date:	2020
License:	http://creativecommons.org/licenses/by-nc-nd/4.0
URI:	http://rdu.iquimica.unam.mx/handle/20.500.12214/1219
metadata.dc.type.uri:	https://doi.org/10.1002/pca.2889
Language:	eng
Appears in Collections:	Artículos

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