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ARAUJO, R.L. Effect of phenolic compounds from Eugenia dysenterica DC on postprandial glycemia in subjects with metabolic syndrome and dysglycemia. Dissertação (Mestrado) – Faculdade de Ciências Farmacêuticas – Universidade de São Paulo, São Paulo, 2015. Brazil has several native fruits, some of them are considered potential sources of phenolic compounds. Cagaita (Eugenia dysenterica DC) is a native fruit from Cerrado region belonging to the Myrtaceae family. Some polyphenols presents in fruits of this family may be able to act on inhibition of enzymes related to carbohydrates such as α-amylase and αglucosidase in vitro. The inhibition of those enzymes activities delays blood glucose absorption, thereby reducing postprandial glycemia and insulinemia. This study aimed to assess the effect of cagaita fruit juices, clarified and non-clarified, rich in phenolic compounds including ellagitannins and proanthocyanidins, on the postprandial blood glucose and insulin responses from a bread meal (50 g), in prediabetic humans who were not taking medications known to influence glucose or insulin metabolism. Three different meals were consumed by volunteers (n=14). The first one consisted of white bread (50 g) plus water (300 mL) as a control; the second one, white bread (50 g) plus clarified cagaita fruit juice (300 mL), and the last one white bread (50 g) plus non-clarified cagaita fruit juice (300 mL). The results showed that both cagaita fruit juices reduced the total amount of glucose absorbed (AUC) by 56% (clarified juice) and 71% (non-clarified) and insulin released by 59% (clarified juice) and 69% (non-clarified), after the ingestion of white bread. Although glucose incremental velocity (GIV) did not show significant differences, absolute increase of glucose (AIg), glucose incremental percentage (GIP) and peak values of glucose (GPV) and insulin (IPV) were significantly lower than those of control (p ˂ 0.05). Also, after ingestion of cagaita juices it was observed an increased antioxidant capacity of plasma in subjects that consumed the meals (p ˂ 0.05).

Efeito dos compostos fenólicos de Eugenia dysenterica DC sobre a glicemia pós-prandial de indivíduos com síndrome metabólica e disglicemia