Use of tannic or gallic acid to produce low beverage soluble iro

Details Use of tannic or gallic acid to produce low beverage soluble iro Use of tannic or gallic acid to produce low beverage soluble iro

1977-02-07

1979-01-16

Wyse, Thomas G.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

210500R, 210502, B01D 3906

Patent

active

041348575

ABSTRACT:
A low beverage soluble iron content filter aid, especially diatomite, is disclosed, as is the method for its production, which comprises contacting the granular filter aid with tannic acid, gallic acid, or mixtures thereof, preferable in aqueous solution. Color control agents such as citric acid may also be present in the solution. The treated filter diatomite is useful in the filtration of vegetable based beverages, especially beer, wine, ale and fruit juices. The invention is also applicable to other filter aids which contain beverage soluble iron, such as perlite.

REFERENCES:
patent: 2410926 (1946-11-01), Bush
patent: 2495751 (1950-01-01), Mills
patent: 2701240 (1955-02-01), Bregar
patent: 2754273 (1956-07-01), Shabaker
patent: 3216579 (1965-11-01), Shelanski
patent: 3406124 (1968-10-01), Eastwood
patent: 3472739 (1969-10-01), Ross
patent: 3557023 (1971-01-01), Raible
patent: 3901826 (1975-08-01), Hofstadt

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