Betanin, the main pigment of red beet: molecular origin of its exceptionally high free radical-scavenging activity.

In the present study, the pH-dependent free radical-scavenging activity of betanin in the Trolox equivalent antioxidant capacity (TEAC) assay was determined. It was found that at a pH > 4 betanin is about 1.5-2.0-fold more active than some anthocyanins considered very good free radical scavengers as... View More