Comparison of the bioavailability of synthetic 'beta'-carotene and 'beta'carotene from a natural source in the presence of pectin in rabbits - Zanutto, M. E.; Fávaro, M. R. D.; Jordão Júnior, Alceu Afonso; Meirelles, M. S. S.; Verceze, A. V.; Vannucchi, Hélio (International Vitamin A Consultative Group Meeting, 2000)