1. DETERMINATION OF TANNINS IN ALCOHOL-CONTAINING LIQUIDS
- Author
-
Irina L. Kazantseva
- Subjects
Range (particle radiation) ,Materials science ,food.ingredient ,caramel color ,Uv absorption ,Analytical chemistry ,Optical density ,alcohol-containing liquids ,Caramel color ,Spectral line ,food ,Social pathology. Social and public welfare. Criminology ,tannins ,Spectroscopy ,brandy ,HV1-9960 - Abstract
The paper presents experimental findings on the influence of caramel color on the UV absorption spectra of tannin-containing liquids. The presence of caramel color in alcohol-containing brandy-type liquids is demonstrated to affect optical density at 280 nm, and therefore the results of spectrophotometric determination of tannins in brandies. A comprehensive approach incorporating a range of techniques, suсh as chemical testing for tannins, UV absorption spectroscopy, and quantitative permanganometric determination of tannins, is shown to be appropriate for the study of phenolic compounds.
- Published
- 2018