Solid bleaching composition for edible oils

Details Solid bleaching composition for edible oils Solid bleaching composition for edible oils

1982-03-17

1984-04-17

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260420, 260428, 502 65, 502 68, C11B 306, C11B 300, C09F 510

Patent

active

044433794

ABSTRACT:
A composition useful for the adsorptive bleaching of edible oils, particularly of vegetable oils, is disclosed. The composition consists essentially of a major portion of bleaching clay and a minor portion of an alumino-silicate zeolite preferably of the faujasite-type structure. The zeolite used has its base exchange sites occupied by alkaline earth metal and/or transition metal cations, wherein the transition metal cations employed exclude those of the Group VIII metals. Preferably, the zeolite is a calcium-, magnesium-, or lanthanum-exchanged Y-zeolite. The presence of the zeolite in the bleaching composition significantly improves the removal of free fatty acids from the oil while permitting simultaneous removal of color impurities.

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