Caracterização física e química de três cultivares de nectarina na zona da mata de Minas Gerais
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Revista Brasileira de Agropecuária Sustentável
Abstract
Este trabalho teve como objetivo avaliar as características físicas e químicas de frutos de três cultivares de nectarina, a saber: Centenária, Josefina e Rubro Sol. Elas foram plantadas no pomar experimental da Universidade Federal de Viçosa (UFV), Viçosa-MG, em 2008, enxertadas sobre o porta-enxerto Okinawa. O experimento foi conduzido durante a safra 2011, em delineamento inteiramente casualisado, com três tratamentos (cultivares), três repetições e 10 frutos por parcela. As características avaliadas foram: cor da casca e da polpa (coordenadas b* e °h); peso de fruto (g); diâmetros longitudinal e transversal (mm); firmeza da polpa (N); teor de sólidos solúveis (°Brix); acidez titulável (% de ácido málico); relação entre o teor de sólidos solúveis e a acidez titulável (SS/AT); e teor de ácido ascórbico e de carotenóides totais. Frutos com coloração de polpa amarela mais intensa foram encontrados na cultivar Centenária. As cultivares Centenária e Josefina apresentaram, no geral, maior peso e diâmetros de frutos. Os frutos das cultivares Centenária e Josefina apresentaram menor acidez e melhor balanço entre sólidos solúveis e acidez. Maiores teores de ácido ascórbico e de carotenóides totais foram encontrados na cultivar Rubro Sol.
This study aimed to evaluate physical and chemical characteristics of fruits of three nectarine cultivars named Centenária, Josefina and Rubro-sol. They were planted in the experimental orchard of the Federal University of Viçosa (UFV), Viçosa-MG in 2008 and grafted on rootstock Okinawa. The experiment was conducted during the 2011 season, in a completely randomized design with three treatments (cultivars), three replicates of 10 fruits per plot. The characteristics evaluated were skin and flesh color (coordinates b* and °h); fruit weight (g); longitudinal and transverse diameters (mm); firmness (N); soluble solids (° Brix); titratable acidity (% malic acid); ratio of total soluble solids and titratable acidity (SS / TA); and ascorbic acid and carotenoids. Fruit with yellow flesh coloration more intense were found in cultivar Centenária. The fruits of cultivars Centenária e Josefina had, in general, higher fruit weight and diameter. The fruits of cultivars Centenária e Josefina had a lower acidity and better balance between acidity and soluble solids. Higher levels of ascorbic acid and carotenoids were found in cultivar Rubro Sol.
This study aimed to evaluate physical and chemical characteristics of fruits of three nectarine cultivars named Centenária, Josefina and Rubro-sol. They were planted in the experimental orchard of the Federal University of Viçosa (UFV), Viçosa-MG in 2008 and grafted on rootstock Okinawa. The experiment was conducted during the 2011 season, in a completely randomized design with three treatments (cultivars), three replicates of 10 fruits per plot. The characteristics evaluated were skin and flesh color (coordinates b* and °h); fruit weight (g); longitudinal and transverse diameters (mm); firmness (N); soluble solids (° Brix); titratable acidity (% malic acid); ratio of total soluble solids and titratable acidity (SS / TA); and ascorbic acid and carotenoids. Fruit with yellow flesh coloration more intense were found in cultivar Centenária. The fruits of cultivars Centenária e Josefina had, in general, higher fruit weight and diameter. The fruits of cultivars Centenária e Josefina had a lower acidity and better balance between acidity and soluble solids. Higher levels of ascorbic acid and carotenoids were found in cultivar Rubro Sol.
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