Food or edible material: processes – compositions – and products – Removing natural color by chemical reaction – e.g.,... – With preliminary noncolor removal treatment with acid – base...
Patent
1992-03-12
1993-06-15
Hunter, Jeanette
Food or edible material: processes, compositions, and products
Removing natural color by chemical reaction, e.g.,...
With preliminary noncolor removal treatment with acid, base...
426258, A23L 1277
Patent
active
052196011
ABSTRACT:
A variety of plant materials adopted for processing into, e.g., low-calorie vegetable fibers and dietary flours, are bleached by (1) prebleaching such plant material in a first aqueous solution containing an alkaline agent and hydrogen peroxide, the alkaline agent being present in solution in such amount that the final pH of the resulting suspension is no greater than 9, (2) filtering and washing the suspension produced in step (1) with water, to an effectiveness of at least 50%, (3) bleaching the material obtained after step (2) in a second aqueous solution containing an alkaline agent and hydrogen peroxide, the alkaline agent being present in solution in such amount that the final pH of the resulting suspension is no greater than 8.5, and, characteristically, (4) filtering and washing the suspension produced in step (3) with water.
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Elf Atochem S.A.
Hunter Jeanette
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