Nutrients and bioactive compounds of pulp, peel and seed from umbu fruit
AUTOR(ES)
Ribeiro, Leilson de Oliveira
FONTE
Cienc. Rural
DATA DE PUBLICAÇÃO
18/04/2019
RESUMO
RESUMO: O objetivo deste trabalho foi avaliar a composição nutricional e compostos bioativos do umbu, incluindo polpa, semente, casca e uma polpa comercial do fruto. Amostras das frações e da polpa comercial foram analisadas para determinação da composição centesimal e mineral, compostos fenólicos totais e capacidade antioxidante. As polpas e casca também foram analisadas quanto aos teores de vitamina C e carotenoides. A polpa comercial apresentou melhor composição nutricional em comparação com a polpa fresca (P<0,05). A casca do fruto apresentou maior teor de compostos fenólicos e capacidade antioxidante que a semente. A casca também se destacou pelos seus teores de vitamina C (79 mg.100 g-1) e carotenoides totais (2.751 µg.100 g-1), mostrando que, como principal barreira do fruto para sua proteção, é uma fração rica em compostos bioativos. Os maiores teores de fibras e ferro foram observados na semente de umbu (P<0,05). Portanto, os subprodutos do despolpamento do fruto podem ser ingredientes adequados para o desenvolvimento de alimentos mais ricos em nutrientes e compostos bioativos.ABSTRACT: The objective of this research was to evaluate the nutritional composition and bioactive compounds of whole umbu fruit, including pulp, seed and peel, and also of a commercial umbu pulp. Samples of the fractions and of commercial pulp were analyzed for determination of minerals and proximate composition, total phenolic and antioxidant activity. Pulps and peel were also analyzed for vitamin C and carotenoids contents. Commercial pulp presented better nutritional composition than fresh pulp (P<0.05) and the peel presented higher phenolic content and antioxidant activity than seed. Peel also stood out by its vitamin C (79 mg.100 g-1) and total carotenoids (2,751 µg.100 g-1) contents, showing that, as the main barrier of the fruit for its protection, it is a fraction rich in bioactive compounds. The highest dietary fiber and iron contents were observed in umbu seed (P<0.05). Therefore, umbu by-products may be ingredients proper for development of food richer in nutrients and bioactive compounds.
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