Antioxidant Activities of Polyphenol Containing Extracts from Citrus

Several fruits and vegetables that posses antioxidant activity have been reported to be rich in polyphenols and are commercially promoted as functional foods. Citrus fruits contain many bioactive compounds such as phenolics, flavonoids, limonoids, carotenoids, sterols and ascorbic acid. Six different varieties of citrus fruits were extracted with five solvents. The dried extracts were screened for their radical scavenging activity and antioxidant capacity. The total phenolics have been determined by Folin-Ciocalteu method and the results have been expressed as catechin equivalents. The antioxidant capacity of the extracts is in accordance with the amount of phenolics / lycopene / vitamin C present in each fraction and may provide a good source of antioxidants. © 2008 American Chemical Society.

Antioxidant Activities of Polyphenol Containing Extracts from Citrus Conference Paper