METHOD OF PREPARING DYE FROM VEGETABLE STOCK

food, pharmaceutical and light industries. SUBSTANCE: predried anthocyan-containing vegetative compound of maize is finely divided, extracted with mixture of aqueous solutions of hydrochloric and nitric acids in field of ultrasound oscillations. Coloring agent is then filtered and concentrated under...

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Bibliographic Details
Main Authors SMIRNOVA VALENTINA VLADIMIROVNA, SMIRNOV VITALIJ ALEKSEEVICH, SIDOROV V.V
Format Patent
LanguageEnglish
Published 10.11.2000
Edition7
Subjects
ADHESIVES
CHEMISTRY
DYES
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
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Summary:food, pharmaceutical and light industries. SUBSTANCE: predried anthocyan-containing vegetative compound of maize is finely divided, extracted with mixture of aqueous solutions of hydrochloric and nitric acids in field of ultrasound oscillations. Coloring agent is then filtered and concentrated under vacuum. Stock is further prepared for extraction by infusing finely divided stock in extracting agent solution at 35-40 C for 6-8 hours. Extraction is carried out at 35-40 C. Extraction is carried out in three stages. Duration of processing each lot during service varies from 30-40 minutes at 35-40 C. Method makes it possible to simplify manufacturing process and widen range of raw materials used. EFFECT: more efficient preparation method. 6 cl
Bibliography:Application Number: RU20000110391