Scavenging of Benzylperoxyl Radicals by Carotenoids

Author: Mortensen, Alan

Source: Free Radical Research, Volume 36, Number 2, 1 January 2002 , pp. 211-216(6)

Publisher: Informa Healthcare

Buy & download fulltext article:

OR

Price: $43.96 plus tax (Refund Policy)

Abstract:

Carotenoids scavenge simple lipid-like alkylperoxyl radicals. However, the rate constant is too low to be determined directly and the mechanism is likewise not known with certainty [Mortensen, A. and Skibsted, L.H. (1998) FEBS Lett. 426, 392-396]. It is demonstrated that carotenoids react with peroxyl radicals only slightly more reactive than lipidperoxyl radicals neither by electron transfer nor by hydrogen atom donation, but by adduct formation. Benzylperoxyl radicals are scavenged by the carotenoids -carotene and canthaxanthin with a second-order rate constant of at least 1 × 106 M−1 s−1 by formation of an adduct which decays in a first-order reaction.

Keywords: Benzylperoxyl radical; Canthaxanthin; Laser flash photolysis; -carotene

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/10715760290006501

Publication date: January 1, 2002

More about this publication?
Related content

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page