Brief Communications

Nature 405, 903-904 (22 June 2000) | doi:10.1038/35016151

Nutrition: Antioxidant activity of fresh apples

Marian V. Eberhardt1, Chang Yong Lee1 & Rui Hai Liu1

Vitamin C is used as a dietary supplement because of its antioxidant activity, although a high dose (500 mg) may act as a pro-oxidant in the body1, 2. Here we show that 100 g of fresh apples has an antioxidant activity equivalent to 1,500 mg of vitamin C, and that whole-apple extracts inhibit the growth of colon- and liver- cancer cells in vitro in a dose-dependent manner. Our results indicate that natural antioxidants from fresh fruit could be more effective than a dietary supplement.

  1. Department of Food Science, 108 Stocking Hall, Cornell University, Ithaca, New York 14853-7201, USA

Correspondence to: Rui Hai Liu1 e-mail: Email: RL23@cornell.edu