FIELD: analytical methods in dye production.
SUBSTANCE: invention can be used both in the stage of isolation of dye from vegetable raw material and during subsequent use of dye in pharmaceutical, alcoholic beverage, soft drink, confectionery, food, and other industries. Method comprises providing alcoholic solution of dye to be analyzed and applying the solution onto Silufol plate provided with silica gel layer. Chromatographic procedure is performed in ascending mode in solvent system: amyl alcohol-acetic acid-water (2:1:1). Plate is the dried and observed in transmitting light and quality of dye is then judged of from peculiar features of chromatographic zones of antocyan pigments.
EFFECT: reduced estimation time.
1 dwg
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