Avaliação da atividade antioxidante do ácido fítico de germe de milho

Química Nova

Cristina Tostes Filgueiras²  Adriana Lourenço Soares²  Massami Shimokomaki²  Elza Iouko Ida²  Rúbia Casagrande¹ 

[1] ,Universidade Estadual de Londrina Departamento de Ciência e Tecnologia de Alimentos Londrina PR ,Brasil

关键词: phytic acid;    antioxidant;    corn germ;   

DOI  :  10.1590/S0100-40422009000700020

来源: SciELO

【 摘 要 】

The obtained corn germ phytic acid (CGPA) antioxidant potential was evaluated through the deoxyribose, bathophenanthroline (BPS) and DPPH• assays. In the concentration of 130.5 μM of CGPA the hydroxyl radical maximum sequestering antioxidant activity was 29.3% while standard phytic acid (SPA) presented this maximum activity of 18.2% in the concentration of 33.2 μM of SPA. The BPS assays revealed that the chelation activity towards Fe2+ increased concurrently with the increase of CGPA concentration and its Fe2+ contact time. Finally, DPPH• assay showed that CGPA and SPA did not present electron-donating capacity to DPPH•.

【 授权许可】

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