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The location of amphiphobic antioxidants in micellar systems: The diving-swan analogy

Author:
Lopez de Arbina, Amaia, Losada-Barreiro, Sonia, Rezende, Marcos Caroli, Vidal, Matías, Aliaga, Carolina
Source:
Food chemistry 2019 v.279 pp. 288-293
ISSN:
0308-8146
Subject:
antioxidants, caffeic acid, esters, gallic acid, hydrophobicity, protocols
Abstract:
A protocol for determining the location of antioxidants (AOs) in a micro-heterogeneous medium was applied to three series of AOs with increasing hydrophobicities: chromancarboxylic acid (“Trolox”) esters, caffeic acid and its esters, and gallic acid and its esters. The observed paradoxical behaviour of these and other commonly encountered antioxidants was rationalized with the aid of a pictorial simile, the “diving-swan” analogy, that explains the orientation and location of an amphiphobic AO when it reacts with a radical probe in the micellar interface.
Agid:
6259709