Characterization of a flavonol-rich antioxidant fraction from Spondias purpurea L. pulp and the effect of its incorporation on cellulose acetate-based film.

Background: Active packaging containing natural flavonoid has recently emerged as a result of its potential to inhibit the oxidation of foods by interacting with it and/or its surrounding environment, with the aim of counteracting oxidation reactions and extending the shelf-life of foods. The plant Spondias purpurea L. is widely found in northeastern Brazil and is known to contain bioactive flavonoids.

Betulinic Acid from Bark Using Focused Microwave-Assisted Extraction and Response Surface Methodology.

Background: The effect of the extraction time (min) and temperature (°C) on the yield of betulinic acid (BA) from barks using focused microwave-assisted extraction was investigated.

Materials And Methods: The ethyl acetate was used as extractor solvent because it was shown to provide a betulinic acid-clean extract. A full two-level statistical factorial design was applied to determine the important effects and interactions of these independent variables upon the yield of BA.