Process for extracting anthocyanin-type colors from natural prod

Details Process for extracting anthocyanin-type colors from natural prod Process for extracting anthocyanin-type colors from natural prod

1980-06-03

1981-11-24

Tungol, Maria Parrish

Bleaching and dyeing; fluid treatment and chemical modification

Process of extracting or purifying of natural dye

536 1, 8646, 536 4, 2602365, 426429, 426431, 426489, C07G 300, A23L 127, C09B 6100, C07H 1504

Patent

active

043022006

ABSTRACT:
A process for the extraction of an anthocyanin-type color from a natural product which comprises bringing the natural product containing said color into contact with a sulfite ion-containing aqueous solution at a temperature of 85.degree. C. or higher for 30 minutes or less, at which time the sulfite ion content of said aqueous solution firstly contacting the natural product is adjusted to at least 10,000 ppm in terms of SO.sub.2.

REFERENCES:
patent: 1167006 (1916-01-01), Monti
patent: 3307954 (1967-03-01), Blakemore
patent: 3437491 (1969-04-01), Peterson et al.
patent: 3484254 (1969-12-01), Peterson et al.
patent: 3963700 (1976-06-01), Philip
patent: 4156077 (1979-05-01), Pifferi
Chem Abstr., vol. 63, 10632c (1965).

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