Qualidade, compostos bioativos e atividade antioxidante de genótipos de mangabeiras (Hancornia speciosa gomes) nativos do litoral cearense.

• Ano de defesa: 2010
• Autor(a) principal: Vidal, Ravena Ferreira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Agronomia; Mangaba; Frutas; Qualidade; Atividade antioxidante; Mangaba - Catu (Fruta) - Composição; Antioxidantes; Mangabeira
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/8615

Mangaba or Mangabeira (Hancornia speciosa) is better adapted to tropical climate drier climate and type of Brazilian cerrados board coasters, where its fruit in the future can be a nice source of food, although not significantly exploited commercially. This study aimed to provide data on the physical, physicochemical and evaluate the quantity of bioactive compounds and total antioxidant activity of different genotypes mangabeiras native of Ceará to obtain information relevant to the use and variability of this species. The fruits were physically characterized for total weight, size and pulp yield. For the evaluation of the physicochemical and chemical characteristics were analyzed: total acidity, total soluble sugar, pH, soluble solids, SS/TTA ratio, vitamin C, total pectin, yellow flavonoids, carotenoids, total extractable polyphenols (TEP) and total antioxidant activity (TAA) by ABTS and DPPH. With respect to the total weight was no big difference between genotypes, ranging from 8.55 g to 20.51 g with pulp yield range from 76.92% to 91.56%. The soluble solids showed high amplitude with a minimum value (17.30 ° Brix) and maximum (24.40 ° Brix). The genotypes showed an average of 10.26% for total sugar, low acid content ranging from 1.55% to 2.24% citric acid, with an average for the SS/TTA ratio of 10.59%. For vitamin C genotype that stood out was the G14 with a value of 269.66 mg/100 g with an average total value of 183.81 mg/100g. A wide variation was obtained for the TEP range from 161.45 to 366.83 mg/100g and average value of 220.06 mg/100g. With respect to the TAA genotypes showed an average of 13.18 mM Trolox / g pulp with the method of ABTS pulp and 5792.66 g / g DPPH for DPPH. There was significant positive correlation between total antioxidant activity by ABTS method with vitamin C (0.6133 **) and the DPPH method, the correlation was negative and significant (-0.669 **). The fruits of mangabeiras studied in this work in its present composition excellent quantities of bioactive compounds such as vitamin C, carotenoids, flavonoids and polyphenols extractable total. Highlighting the genotype 14 with the higher content of vitamin C among genotypes. Genotypes 5, 13 and 15 with the highest values of total antioxidant activity in ABTS method, among the genotypes. And for the total antioxidant activity in DPPH, highlighted the five genotypes, 14 and 15.