Process for preparing anthocyans from corresponding flavonoid gl

Details Process for preparing anthocyans from corresponding flavonoid gl Process for preparing anthocyans from corresponding flavonoid gl

1979-02-02

1981-03-10

Brown, Johnnie R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

204158R, C07H 1704

Patent

active

042555639

ABSTRACT:
A process for preparing anthocyans by reducing the corresponding flavonoid glycosides with a metal and acid at temperatures not higher than 30.degree. C. under acidic conditions, precipitating the anthocyans formed from the reduction reaction as a metal salt by neutralizing the reaction solution with an alkali and isolating the free anthocyans by decomposing the metal salt with concentrated hydrochloric acid.

REFERENCES:
patent: 2738346 (1956-03-01), Wender et al.
patent: 3808197 (1974-04-01), Feuer et al.
Robinson, "Chem. Ber." vol. 85, 19434A, pp. 85-87.
Malkin et al., "Jour. Amer. Chem. Soc.," vol. 52, pp. 2864-2867.

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