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

• Tipo: Outra Publicação em Revista Científica Internacional
• Data: 2009

Autores

Luis M Magalhaes (Autor) Outra; Marlene Lucio (Autor) FFUP; Marcela A Segundo (Autor) FFUP; Salette Reis (Autor) FFUP; Jose L F C Lima (Autor) FFUP

Revista

Título: Talanta

Vol. 78 Nº 1

Páginas: 1219-1226

ISSN: 0039-9140

Editora: Elsevier

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 19 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-003-J7Z

DOI: 10.1016/j.talanta.2009.02.006

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8