EmulCicloFood propone un enfoque novedoso bio-inspirado desde un punto de vista multidisciplinario pero inclusivo para abordar algunos de estos problemas mediante la combinación del uso de estabilizadores de grado alimentario, AOs naturales y estrategias de encapsulación. [...]
Reportaje en el diario de la universidad de Vigo sobre la Tesis de una compañera de nuestro equipo, Josefa Freiría. Buen trabajo Josefa!! [...]
Background Controlling the interfacial concentrations of antioxidants (AOs) in O/W emulsions can be regarded as an unique approach for increasing the efficiency of AOs in inhibiting the oxidation of lipids. Classical methods to determine the AO distribution in binary systems cannot be employed and their distribution needs to be assessed in the intact emulsion [...]
The location of antioxidants (AOs) in a micellar system was determined with the aid of a recently described protocol. The protocol was applied to trolox, caffeic, and gallic acid derivatives of increasing hydrophobicities. The amphiphobic nature of the AOs determined their insertion and orientation in the micellar interface. Their behaviour in a hetero-phasic system was rationalized with a pictorial simile, the “diving-swan” analogy. [...]
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 [...]
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) [...]
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. [...]
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 chemical instability, requiring the use of radical trapping agents in combination with, for example, magnetic (eg, EPR) and/or time‐resolved techniques (eg, frequency comb spectroscopy) to indentify and quantify them. Here, we have exploited the unique electrochemical properties of arenediazonium ions, ArN2+, to estimate the association constant of the electrochemically generated aryl radicals derived from benzenediazonium ions, BD, with sodium dodecyl sulfate (SDS) micelles [...]
Bienvenidos a nuestra nueva página web, en ella podréis encontrar todo lo relacionado con nuestro grupo de investigación Antiox [...]
Phenolipids are a class of phenolic compounds with a lipidic moiety that have been receiving increasing attention due to their promising biological activities; however data regarding their toxicity and mechanism of action are scarce. A series of 11 phenolipids consisting of alkyl esters derivatives of the natural molecule protocatechuic acid was synthesized and evaluated against a panel of cancer and non-cancer cell lines [...]