FLAVONOIDS, POLIFENOLS CONTENT AND ANTIOXIDANT ACTIVITY OF CITRUS FRUITS EXTRACTS.

Ion Rodica-Mariana, et al.
Researchgate, 2015

Abstract

Most of citrus fruits offer large quantity of flavonoids and they have beneficial effects attributed to their chemical components: hesperidin, hesperetin, diosmin. The determination of total flavonoid content, determination of total polifenols content and the antioxidant activity of the samples (%), have been calculated in this paper for methanol extracts as the highest polar among the solvents used for extractions. This methanol extract contains the highest yield of phenolic compounds and the highest antioxidant activity (% DPPH scavenging activity) by comparison with other solvent extracts. It have been elaborated the calibration curves for the standards of the above mentioned compounds, by using UV-Vis spectrophotometry. ... Hesperidin is the most existent flavanone found in citrus peel. It is known that it improves the vascular integrity, decreases capillary permeability and is given as a supplement to patients with blood vessel fragility.

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