Symbol

CLA/SR/20/2011

Opis metody badań

M. spektrofotometryczna

Szczegóły, literatura

Singelton V.L., Rossi J.A. Fr. 1965. American Journal of Enology and Vitaculture 16, 144-158
Tytuł: Colorimetry of total phenolics with phosphomolybilic-phosphotungstic acid reagentsAbstrakt: Singelton V.L., Rossi J.A. Fr. 1965. Colorimetry of total phenolics with phosphomolybilic-phosphotungstic acid reagents. American Journal of Enology and Vitaculture 16, 144-158. Several details of the assay of total phenolic substances have been investigated and an improved procedure developed. The improvements include the use of Folin-Ciocalteu reagent rather than the Folin-Denis reagent, gallic acid as a reference standard, and a more reproducible time-temperature color development period. The values obtained are less subject to variation and interference from several nonphenols, yet are directly comparable to the "tannin" values obtained by the previously standard method.