Sugars, organic acids, minerals and lipids in jabuticaba/Acucares, acidos organicos, minerais e lipideos em jabuticaba

• Published in: Revista Brasileira de fruticultura Vol. 33; no. 2
• Main Authors: Lima, Annete De Jesus Boari, Correa, Angelita Duarte, Dantas-Barros, Ana Maria, Nelson, David Lee, Amorim, Ana Carolina LourenCo
• Format: Journal Article
• Language: Spanish
• Published: Sociedade Brasileira de Fruticultura 01.06.2011
• ISSN: 0100-2945

The aim of this work was to determine the sugar, organic acid and mineral compositions of the whole fruit and fractions (skin, pulp and seed) of the Paulista (Plinia cauliflora) and Sabara (Plinia jaboticaba) jabuticaba tree genotypes, as well as the oil compositions of their skin and seeds. High levels of sugar, especially fructose, followed by glucose and sucrose, were encountered in the fruit. In the Paulista genotype, higher levels of total and reducing sugars were found in the pulp and skin, which was not observed when comparing the whole fruit of both genotypes. Five organic acids were found in the whole fruit and in the fractions of the two jabuticaba genotypes in quantitative order: citric acid > succinic acid > malic acid > oxalic acid > acetic acid. Potassium was the most abundant mineral found. This fruit was also shown to be rich in magnesium, phosphorus, calcium and copper. The seed oil had nearly the same constitution as the oil extracted from the skin in both genotypes and the major compounds were an unidentified phytosterol, palmitic, linoleic and oleic acids, and squalene. Index terms: Plinia cauliflora, Plinia jaboticaba, chemical constituents. O objetivo deste trabalho foi determinar a composicao dos aCucares, acidos organicos e minerais do fruto inteiro e fraCoes (casca, polpa e semente) dos genotipos de jabuticabeira Paulista (Plinia cauliflora) e Sabara (P. jaboticaba), assim como a composicao do oleo das cascas e sementes. As frutas apresentaram elevados teores de aCucares totais, destacando-se a frutose, seguida de glicose e sacarose. No genotipo Paulista, foram encontrados teores mais elevados de aCucares totais e redutores na polpa e na casca, o que nao foi observado ao comparar os frutos inteiros dos dois genotipos. Foram encontrados cinco acidos organicos na seguinte ordem quantitativa: acido citrico > acido succinico > acido malico > acido oxalico > acido acetico. Potassio foi o mineral mais abundante encontrado. A fruta mostrou tambem ser rica em magnesio, fosforo, calcio e cobre. O oleo das sementes mostrou ter praticamente a mesma constituicao do oleo extraido das cascas, e os compostos majoritarios foram um fitosterol nao identificado, os acidos palmitico, linoleico e oleico e o esqualeno. Termos para indexacao: Plinia cauliflora, Plinia jaboticaba, constituintes quimicos.