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

Posted on 5 December, 201814 February, 2019 by antiox@uvigo.es

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, Read more about The location of amphiphobic antioxidants in micellar systems: the diving-swan analogy[...] [...]

Differential partitioning of lipophilic bioantioxidants in edible oil-water and octanol-water

Posted on 18 July, 201814 February, 2019 by antiox@uvigo.es

Partition coefficients, PWO, of antioxidants (AOs) between edible oils and water are scarce in the literature, despite that AOs are widely used to control lipid oxidation and the oxidative stress in cells. PWO values have a great importance to predict the efficiency and distribution of bioactives at different levels of biological organization from binary oil–water systems to living cells [...]

Enhancement of the antioxidant efficiency of gallic acid derivatives in intact fish oil-in-water emulsions throught optimization of their interfacial concentrations

Posted on 18 July, 201814 February, 2019 by antiox@uvigo.es

The antioxidant (AO) efficiencies and the distributions of gallic acid (GA) and a series of alkyl gallates (propyl, PG, butyl, BG, octyl, OG and lauryl, LG) were determined in intact fish oil-in-water emulsions. The efficiency of the AOs in inhibiting the oxidation of the fish oil lipids increases upon increasing AO hydrophobicity up to a maximum (∼3-fold) at the octyl derivative, after which the efficiency decreases (LG) [...]

Modulating the interfacial concentration of gallates to improve the oxidative stability of fish oil-in-water emulsions

Posted on 1 June, 201814 February, 2019 by antiox@uvigo.es

The distributions of some gallates were determined in intact fish oil emulsions. % gallates at the interface increases upon increasing surfactant volume fraction ΦI. On the contrary, their interfacial concentrations decrease upon increasing ΦI. Their efficiencies correlate directly with the gallate interfacial concentrations. Butyl and octyl gallates were the most suitable to protect the fish emulsions. [...]

Partitioning of aryl radicals in micellar systems

Posted on 19 February, 201814 February, 2019 by antiox@uvigo.es

19 February 2018 Journal of Physical Organic Chemistry. 2018 Sonia Losada-Barreiroa, Andrzej Sienkiewiczb, Carlos Bravo-Díaza Autor affilations: *Corresponding authors aDepartanento de Química Física, Universidad de Vigo, Spain Determining the association constants of radicals to biomimetic systems is not a simple task because of the inherent experimental difficulties associated to their “in‐situ” generation together with their high Read more about Partitioning of aryl radicals in micellar systems[...] [...]