05 December 2018
Food Chemistry. 1 - 279, pp. 288 - 293.
2018
Sonia Losada-Barreiroc, Amaia Lopez de Arbinaa,b, Marcos Caroli Rezendea, Matias Vidala, Carolina Aliagaa,b*
Autor affilations:
*Corresponding authors
aFacultad de Química y Biología, Universidad de Santiago de Chile, Av. B.O’Higgins 3363, Santiago, Chile
bCentro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Chile
cDepartanento de Química Física, Universidad de Vigo, Spain
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.
