Study about the stability and some technological properties of the pigments synthesized of Epicoccum nigrum

Abstract

A yellowish colorant complex, rich in carotenoids and flavonoids, synthesized by selected strain Epicoccum nigrumMIUG 2.15, was studied for its stability and some technological properties. Stability of watery and ethanolic extracts was evaluated indifferent conditions. The study was concerned with the behavior of the pigments for different pH values. The extracts bearing significant pH differences were experimented for temperatures of 5ºC, 20ºC and 60ºC and also for different types of light: solar, UV and in darkness. The components of the colorant complex were separated on ion chromatography, and analyzed the absorption spectrum of the isolated fractions were analyzed. The different separated fractions were studied for their antioxidant capacity and antimicrobial activity. The pigments complex biosynthesized by Epicoccum nigrum MIUG 2.15 proved stability in refrigeration and darkness conditions, and the better stability was found at ethanolic extracts in an alkaline medium. The isolated fractions proved a good antioxidant activity.