Bleaching of vegetable pulps

Details Bleaching of vegetable pulps Bleaching of vegetable pulps

1990-06-05

1992-03-10

Hunter, Jeanette

Food or edible material: processes, compositions, and products

Removing natural color by chemical reaction, e.g.,...

By organic color remover

426261, 426255, A23L 127

Patent

active

050948660

ABSTRACT:
Extracted vegetable pulps are bleached to a high degree of whiteness, thus rendering them more attractive as food supplements, by (a) treating such pulp in an acid medium at a pH of up to 2.5 and for a period of time of at least 10 minutes, (b) next washing the pulp thus treated to an efficiency of at least 80%, and (c) then reacting the washed pulp with an aqueous alkaline solution of hydrogen peroxide, in the presence of an H.sub.2 O.sub.2 stabilizer.

REFERENCES:
patent: 2478043 (1949-08-01), Evans
patent: 2777749 (1957-01-01), Young
patent: 4241093 (1980-12-01), Farag et al.
Patent Abstracts of Japan, vol. 12, No. 50 (C-476)(2897), Feb. 16, 1988, "Method for Stabilizing Hydrogen Peroxide Solution", JP-A-62-197304 (Nippon Peroxide Co. Ltd.), 1987.

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