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Antioxidant and prooxidant nature of hydroxycinnamic acid derivatives ferulic and caffeic acids.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Maurya, Dharmendra Kumar Devasagayam, Thomas Paul Asir
Description	Country affiliation: India Author Affiliation: Maurya DK ( Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India.)
Abstract	Dietary polyphenols are beneficial to human health by exerting various biological effects. Ferulic and caffeic acids are hydroxycinnamic acid derivatives widely distributed in plant-derived food products. Studies indicate that some dietary compounds may have concentration-dependent antioxidant or prooxidant activities. The present study concerns such activities of ferulic and caffeic acids. They have concentration-dependent antioxidant effects in terms of inhibition of lipid peroxidation and reactive oxygen species-scavenging after 2,2'-azobis-amidinopropane dihydrochloride-induced damage in mouse liver microsomes and splenic lymphocytes respectively. They also show differential scavenging of nitric oxide, superoxide and 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulfonic acid radical (ABTS*(+)). In DPPH (1,1-diphenyl picrylhydrazyl) assay above 20 µM the absorbance start increasing due to the formation of an unknown adduct which has a shoulder at 517 nm. However, in Fenton reaction, above 5 µM, they behave as prooxidants and the possible mechanisms responsible for their prooxidant property may be related to their ferric reducing ability. These findings may have significant health implications where these natural compounds are being used/consumed.
File Format	HTM / HTML
ISSN	02786915
Issue Number	12
Volume Number	48
e-ISSN	18736351
Journal	Food and Chemical Toxicology
Language	English
Publisher	Elsevier
Publisher Date	2010-12-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Toxicology__semicolon__nutritional Discipline Sciences Antioxidants Pharmacology Caffeic Acids Coumaric Acids Free Radical Scavengers Oxidants Amidines Animals Benzothiazoles Chemistry Biphenyl Compounds Ferric Compounds Hydroxyl Radical In Vitro Techniques Lipid Peroxidation Drug Effects Male Mice Microsomes, Liver Nitric Oxide Picrates Reducing Agents Sulfonic Acids Superoxides Journal Article
Content Type	Text
Resource Type	Article
Subject	Medicine Toxicology Food Science

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Antioxidant and prooxidant nature of hydroxycinnamic acid derivatives ferulic and caffeic acids.

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