Color stability of tropical nectars and a simple method of its determination

acide ascorbique acido ascorbico ascorbic acid carotenoide carotenoides carotenoids catechol oxidase catecol oxidasa color colour control de calidad couleur cuba decoloration discoloration enzymic activity fruit juices jugo de frutas mango mangoes mangue polyphenoloxidase procesamiento processing refrigerated storage stockage au froid traitement vitaminas vitamine vitamins