Antioxidant activity of five Brazilian plants used as traditional medicines and food in Brazil

作者：Santos Allana K L; Costa Jose G M; Menezes Irwin R A; Cansancao Isaac F; Santos Karla K A; Matias Edinardo F F; Coutinho Henrique D M^*

来源：Pharmacognosy Magazine, 2010, 6(24): 335-338.

DOI：10.4103/0973-1296.71789

• DPPH
• Eugenia jambolanum
• Eugenia uniflora
• Hyptis martiusii
• Mentha arvensis
• Momordica charantia
• radical scavenging

Background: This study evaluates the radical-scavenging activity of five plants used as food and medicines in the northeastern region of Brazil. Materials and Methods: Spectrophotometric analysis of the plants' ethanol extracts was carried out. The antioxidant activity was determined by the DPPH (2,2-diphenyl-1 picrylhydrazyl) test. The antioxidant capacity was measured using ascorbic acid as a positive control. Results: All tested plant extracts showed an antioxidant activity, but the highest activity was observed with the extracts of Momordica charantia and Eugenia jambolana. Conclusions: Therefore, these species must be studied as a putative source of products for use in the prevention and treatment of diseases in which oxidants or free radicals are implicated.

• 出版日期2010-12