ABSTRACT. Four formulations of gabiroba jam were processed, and their physicochemical and functional characteristics, rheological profile and jam acceptance were assessed. The physicochemical and chemical characteristics evaluated were water activity, titratable acidity, pH, reducing and non-reducing sugars, proteins, ashes, dietary fibers, color, and firmness. For functional analyses of the formulations, vitamin C, phenolic compounds and carotenoid contents were determined. The ABTS + and DPPH• methods were employed to evaluate the antioxidant potential. Rheological analysis was performed in a HAAKE RS 75 Rheoestress rheometer with a plate/plate sensor. The flow curve behavior was adjusted using the Power Law and Herschel-Bulkley models. Sensory analyses were performed by 52 untrained testers using a 9-point structured hedonic scale. The content of total phenolic compounds in the jam was between 322.09 and 728.48 mg 100 g . The samples also showed good retention of beta carotene. All samples showed a higher storage modulus (G') than loss (G") Thsensory evaluation revealed a satisfactory acceptance of the gabiroba jam formulations.Keywords: gabiroba, jam, antioxidant activity, rheological profile.Caracterização química e avaliação do potencial antioxidante do doce em massa de gabiroba (Campomanesia xanthocarpa Berg) RESUMO. foram processar quatro formulações de doces em massa de gabiroba e avaliar às suas características físico-químicas, funcionais, perfil reológico e aceitabilidade dos doces. As características físico-químicas e físicas avaliadas foram: atividade de água, acidez titulável, pH, açúcares redutores e não redutores, proteínas, cinzas, fibra alimentar, cor, firmeza. Para avaliação funcional das formulações foram determinados os teores de vitamina C, compostos fenólicos, carotenóides. O potencial antioxidante foi determinado através dos métodos ABTS + e DPPH• . As análises reológicas foram realizadas em reômetro HAAKE RS 75 Rheoestress com o sensor placa-placa. O comportamento das curvas de fluxo foi ajustado pelos modelos de Lei da Potência e Herschel-Bulkley. A avaliação sensorial foi realizada por 52 provadores não treinados utilizando escala hedônica estruturada de nove pontos. Os doces apresentaram teores de compostos fenólicos totais entre 322,09 e 728,48 mg 100 g -1

Campomanesia xanthocarpa Berg (Myrtaceae) é uma árvore nativa brasileira, com ampla distribuição natural ou cultivada em pomares domésticos da Região Sul. Apresenta abundante frutificação, cresce em solos pobres, em climas quentes ou secos. A fruta madura é verde-amarelada, a polpa é doce, rica em vitaminas, utilizada para o preparo de sucos ou ingerida in natura. O fruto contém macro e micronutrientes: proteínas (1,08 g/100 g), lipídios (0,12 g/100 g), açúcares redutores (8,3 g/100 g, sendo frutose 4,0 g/100g; glucose 4,3 g/100g), sais minerais (ferro 3,52, cálcio 28,45; fósforo 25,3; potássio 1,53mg/100g). Os elevados teores de compostos fenólicos (1616 ppm/100g) e vitamina C (233,56 mg/100g) qualificam o fruto como alimento funcional. A polpa suculenta e o aroma característico do fruto podem ser atributos vantajosos na preparação de polpa congelada e como excelente matéria-prima no preparo de sucos, geléias, sorvetes etc. A textura do fruto pode ser atribuída ao alto teor de pectinas, que foram extraídas e analisadas. Este fruto apresenta potencial tecnológico devido às suas propriedades sensoriais e nutritivas.

No abstract

This study aimed to evaluate the antioxidant potential and fatty acid profile of gabiroba (Campomanesia xanthocarpa Berg) seeds. In order to obtain the extract, the seeds were dried, crushed, and subjected to sequential extraction by maceration and percolation in a modified soxhlet extractor using solvent polarity gradient composed of hexane, chloroform, ethyl acetate, and alcohol, respectively. The extraction time was six hours. The ethanol extract showed the highest antioxidant potential, given by the EC50 value and the amount of total phenolic compounds. High amounts of unsaturated fatty acids were found in the oil studied, especially the oleic acid.

OBJECTIVE: This study assessed the impact of supplementing the diet of women during pregnancy and lactation with fish oil containing the omega-3 fatty acid docosahexaenoic acid, and its influence on the composition of human milk. METHODS: The sample comprised 60 women aged 18 to 38 years with appropriate dietary pattern, all of them healthy and nonsmokers. The intervention consisted of a daily supplementation with fish oil capsules that corresponded to a daily intake of 315mg of docosahexaenoic acid and 80mg of eicosapentaenoic acid during the third trimester of pregnancy and the first three months postpartum. The total fat content and fatty acid profile of their milk were determined by creamatocrit and gas chromatography. Descriptive statistics were used for data analysis and the significance level was set at p<0.05. RESULTS: There was no statistical difference between the fat contents of the study (fish oil capsules) and control (capsules containing corn starch as filler) groups. However, the milk of women taking fish oil contained higher docosahexaenoic and eicosapentaenoic acid levels 30 and 60 days after delivery. These results demonstrate that high omega-3 intake can influence its concentration in human milk. CONCLUSIONS: Given the importance of docosahexaenoic acid in the neonatal period, it is appropriate for pregnant and breastfeeding women to supplement on long-chain polyunsaturated fatty acids, which may be done by adding fish oil to the regular diet.