Food or edible material: processes – compositions – and products – Involving ion exchange – sequestering or chelating material
Patent
1989-06-30
1991-11-12
Czaja, Donald E.
Food or edible material: processes, compositions, and products
Involving ion exchange, sequestering or chelating material
210679, 210690, 210691, 426330, 4263301, 4263306, 426417, 426614, A23C 914, C12H 104
Patent
active
050646680
ABSTRACT:
Cholesterol and other sterols are separated from fluid mixtures, especially foodstuffs such as egg yolk, using a surface-modified adsorbent which selectively adsorbs the sterols. The surface-modified adsorbent is prepared by (a) treating an adsorbent with a sterol compound so that the sterol compound becomes adsorbed on the adsorbent surface; (b) treating the sterol-modified adsorbent with a surface-modifying agent, this surface-modifying agent having a reactive group capable of reacting with the surface of the adsorbent, and an elongate hydrophobic portion, so that the surface of the adsorbent not covered by the adsorbed sterol compound reacts with the surface-modifying agent; and (c) desorbing the sterol compound from the adsorbent. A surface-modified adsorbent prepared in this way may also be used to remove sterols from solvents (such as carbon dioxide) which have themselves been used to extract sterols from foodstuffs, thus avoiding the need to distil and condense the solvent before it is recycled to treat further batches of the foodstuff.
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Finley John W.
Klemann Lawrence P.
Czaja Donald E.
Federman Evan
Nabisco Brands Inc.
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