Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6481
Título: Enzymatic determination of L(-)malic and L(+)lactic acids in wine by flow injection analysis
Autor: Lima, José L. F. C.
Rangel, António O. S. S
Palavras-chave: Flow injection analysis
L(-)malic acid
L(+)lactic acid
Spectrophotometric enzymatic determination
Data: 1992
Editora: American Society for Enology and Viticulture
Citação: LIMA, José L. F. C.; Rangel, António O.S.S. - Enzymatic Determination of L(-)malic and L(+)lactic Acids in Wine by Flow Injection Analysis . American Journal of Enology and Viticulture. ISSN 0002-9254. Vol. 43 n.º 1 (1992), p. 58-62
Resumo: The enzymatic determination of L(-)malic and L(+)lactic acids in several types of wines by flow injection analysis (FIA) with spectrophotometric detection is described. This flow injection system, which incorporates a dialysis unit for adjusting the composition of the injected solutions to the requirements of the measuring system, enables determinations of these two organic acids without the need for any prior treatment of the wine samples, with a concentration interval of between 0.02 and 4 g/L, and a sampling rate of approximately 20 determinations per hour. The results obtained with this FIA method for various types of Portuguese wines are in good agreement with those of the batch method which uses the same enzymatic technique and are quite precise as they present a coefficient of variation below 2.5%.
Peer review: yes
URI: http://hdl.handle.net/10400.14/6481
Versão do Editor: http://www.ajevonline.org/cgi/content/abstract/43/1/58
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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