Maroleiro (Annona crassiflora Mart), belonging to the family of Annonaceae is a typical specie of the Cerrado and has occurred in most states. For fruit characteristics "sui generis", with significant nutritional value. This study aimed to characterize the marolo (Anonna crasiflora Mart) during fruit development, through the evaluation of its proximal and mineral composition. The fruits 2012/2013 season, were picked to 12Km from the city of Itumirim, southern Minas Gerais, in intervals of 20 days from anthesis to maturity, and the first fruits were harvested 60 days after anthesis. The flowering marolo began in late September 2012, with fruiting initially observed at the end of Dctober, with peak production at the end of February and beginning of March 2013 The fruits were harvested in the morning and carried to the laboratory, where followed up the moisture, ether extract, protein, ash, fiber and high sugar fraction beyond mineral quantification of them. During development reductions in moisture content and protein increments of ether extract, crude fiber and high sugar fraction and an oscillation in the mineral along the developmental stages was observed.

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