Effect of heat treatment on the biological volume of 'beta'-carotene added to soybean cooking oil in rats - Dutra de Oliveira, José Eduardo; Favaro, Rosa Maria Duarte; Junqueira-Franco, Márcia V. M.; Carvalho, Camila G.; Jordão Junior, Alceu Afonso; Vannucchi, Hélio (International Journal of Food Sciences and Nutrition, 1998)