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Artigo Revisado por pares
BIBTEX RIS

Determination of gallotannin with rhodanine

1988; Elsevier BV; Volume: 169; Issue: 2 Linguagem: Inglês

10.1016/0003-2697(88)90296-5

ISSN

1096-0309

Autores

Kenneth H. Inoue, Ann Hagerman,

Tópico(s)

Phytochemicals and Antioxidant Activities

Resumo

A reliable method for quantitative analysis of gallotannin in plants has been devised. Gallotannin is hydrolyzed with acid, and gallic acid in the hydrolysate is then assayed using rhodanine. This method is very specific; no interferences from other plant phenolics, including ellagic acid and condensed tannin, have been observed. The rhodanine assay has a sensitivity of 0.01 mg of gallic acid and a precision of 2.2% (relative standard deviation).

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