Publications by authors named "Dolores Sicilia"
Article Synopsis
- Astaxanthin is a powerful antioxidant that shows promise for treating diseases related to oxidative stress, but its effectiveness is often hindered by its properties like high lipophilicity and sensitivity to heat.
- Researchers created a formulation using lipid carriers with sunflower oil to protect astaxanthin's antioxidant abilities and enhance its stability.
- The study found that these nanostructured lipid carriers successfully maintained over 90% of astaxanthin after synthesis and demonstrated significant antioxidant activity, with the particles being spherical and about 60 nm in size.
Astaxanthin, a powerful antioxidant, is a good candidate for the prevention of intracellular oxidative stress. The aim of the study was to compare the antioxidant activity of astaxanthin present in two natural extracts from Haematococcus pluvialis, a microalgae strain, with that of synthetic astaxanthin. Natural extracts were obtained either by solvent or supercritical extraction methods.
View Article and Find Full Text PDFThe mixed aggregate (MA) method was evaluated for the routine determination of total ethoxylated nonionic surfactants in municipal raw and treated sewage. Nonionics in wastewater samples were enriched with a C8 solid-phase extraction cartridge, eluted with ethyl acetate-methanol, and separated from interferences with stacked strong anionic (quaternary ammonium form) and cationic (benzenesulfonic acid form) exchange columns. Sample extracts were evaporated to dryness and redissolved in distilled water.
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