Evaluation of biogenic amines in some Portuguese quality wines by HPLC fluorescence detection of OPA derivatives

• Tipo: Artigo em Revista Científica Internacional
• Data: 1999

Autores

Mafra, I (Autor) Outra; Herbert, P (Autor) Outra; Santos, L (Autor) FEUP; Barros, P (Autor) Outra; Alves, A (Autor) FEUP

Revista

Título: American Journal of Enology and Viticulture

Vol. 50 Nº 1

Páginas: 128-132

ISSN: 0002-9254

Editora: American Society for Enology and Viticulture

Indexação

ISI Web of Knowledge - 43 Citações

Scopus - 49 Citações

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

Outras Informações

ID Authenticus: P-005-6AF

Abstract (EN): Biogenic amines are present in wines in relatively low quantities, when compared with other food products. The difficulty in accurately analyzing biogenic amines in wines is due to matrix interference and to the generally low quantities of the amines present. In this work data on 30 Portuguese wines, including fortified wines: Porto, Madeira, and Moscatel de Setubal; red D.O.C. wine Dao and white D.O.C. wine Vinho Verde are presented. OPA-fluorescent derivatives of 10 amines - histamine, tyramine, beta-phenylethylamine, tryptamine, putrescine, cadaverine, ethylamine, methylamine, isoamylamine, and ethanolamine - were separated by reverse phase HPLC. Advantages of the method were: low detection limit (90 mu g/L average), an acceptable reproducibility (relative standard deviation was 10.4% average - minimum 3.0% for ethanolamine and maximum 21.1% for cadaverine), absence of previous laborious and less accurate extraction procedure and possibility of automation. Time of analysis (60 minutes) was sacrificed in order to obtain a better resolution between amines. Results show that amines suspected to have toxicological effects (histamine, tyramine and beta-phenylethylamine) do not represent any concern, as their amounts do not generally exceed 5 mg/L. The contents of amines associated with deficient sanitary conditions (putrescine and cadaverine) are very low varying between 0.2 and 0.6 mg/L. Tryptamine was not detected and care must be taken when quantifying ethanolamine and ethylamine, as other wine compounds may co-elute with them.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5