?- and ?-galactosidases enzymes activity of 'Tommy Atkins' mangoes during development.
Lucena E. M. P. de, Assis J. S. de, Alves R. E., Enéas Filho J.
Author Affiliation: Curso de Ciências Biológicas da Universidade Estadual do Ceará - UECE, Av. Paranjana, 1700, Itaperi, CEP 60.740- 903, Fortaleza-CE, Brazil.
Revista Brasileira de Produtos Agroindustriais 13 : 65-74
Abstract : The objective of this study is to define the pectines content, proteins, and galactosidase activity during mango (Mangifera indica L.) growth, cv. Tommy Atkins, from anthesis to harvest to determine the optimum harvest maturity stage for the mango. The fruits were harvested at 63, 70, 77, 84, 91, 98, 105 and 112 days after anthesis (DAA), with the following determinations: firmness, total pectin, soluble pectin, high and low pectin, metoxilation degree, protopectin, solubilization, pectin percentage, ?- and ?-Galactosidase enzymes activity. The results demonstrated that mango cv. Tommy Atkins took 98 DAA to reach maturity. The total pectin represented the best growth indicator of irrigated mango crop in the São Francisco Valley, based on its high coefficient of determination (R2=0,9509, P0,01) and the excellent correlation coefficients with the highest pectin metoxilation degree (R=0,82, P0,01).