Katherina Fernández

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An extraction protocol was developed to maximize the amount of extracts obtained from three brown seaweeds, Lessonia nigrescens (in two stages of development), Macrocystis pyrifera, and Durvillaea antarctica, and to evaluate them as natural inhibitors of the angiotensin I-converting enzyme (ACE). Two extraction methods were used, an enzymatic method(More)
Proanthocyanidins (PAs) have several bioactivities, but they are unstable in the digestive tract and possess low bioavailability. Nanoencapsulation stabilizes these compounds for oral administration. The intestinal absorption of grape seed and skin extracts, and the poly-lactic acid (PLA) nanoparticles loaded with such extracts was modeled, taking into(More)
The concentration profiles and the absorbed fraction (F) of the País grape seed extract in the human small intestine were obtained using a microscopic model simulation that accounts for the extracts' dissolution and absorption. To apply this model, the physical and chemical parameters of the grape seed extract solubility (C s), density (ρ), global mass(More)
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