Automatic flow injection based methodologies for determination of scavenging capacity against biologically relevant reactive species of oxygen and nitrogen

作者：Magalhaes Luis M; Lucio Marlene; Segundo Marcela A^*; Reis Salette; Lima Jose L F C

来源：Talanta, 2009, 78(4-5): 1219-1226.

DOI：10.1016/j.talanta.2009.02.006

• Antioxidants
• Reactive oxygen species
• Reactive nitrogen species
• Flow injection analysis

Redox reactions are the heart of numerous biochemical pathways found in cellular chemistry, generating reactive oxygen species (ROS) and reactive nitrogen species (RNS), that includes superoxide anion radical (O(2)(center dot-)), hydrogen peroxide (H(2)O(2)), hydroxyl radical (HO(center dot)), singlet oxygen ((1)O(2)), hypochlorite anion (OCl(-)), peroxynitrite anion (ONOO(-)) and nitric oxide radical (NO(center dot)). The measurement of scavenging capacity against these reactive species presents new challenges, which can be met by flow injection analysis (FIA). In the present review several methods based on FIA and also on its predecessors computer-controlled techniques (sequential injection analysis. multisyringe flow injection analysis, multicommutated and multipumping flow systems) are critically discussed. The selectivity and applicability of the methodology, the generation and detection of the target reactive species, the benefits and limitations of automation when compared to batch methods are some of the issues addressed.

• 出版日期2009-6-15