Membrane process for separating carbohydrates

Details Membrane process for separating carbohydrates Membrane process for separating carbohydrates

1996-10-22

1998-09-01

Caldarola, Glenn

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 42, 127 463, 127 53, 127 54, 127 55, 210634, 210638, C13J 106, C13D 108, C13D 312, B01D 1500

Patent

active

058006249

ABSTRACT:
Plasticized liquid membranes and processes for separating monosaccharides from disaccharides and from other monosaccharides employing the membranes are provided. Fructose is separated from glucose via the membrane process to provide fructose in concentrations sufficient for HFS (high fructose syrup) and sucrose, glucose and fructose are separated from crude sources such as molasses, sugar cane juice and beet sugar juice. The plasticized membranes are prepared by dissolving a lipophilic polymer such as cellulose triacetate, an organic liquid plasticizer such as a hydrophobic ether compound e.g. 2-nitrophenyloctyl ether and, a carrier compound such as a quaternary ammonium salt or a boronic acid compound with lipophilic substitution in a suitable solvent which upon evaporation provides the plasticized membrane. The membrane produced is homogeneous having all three components equally dispersed in the membrane. Also provided are new boronic acid compounds which are especially useful carrier compounds for the transport of monosaccharides such as fructose through the membranes.

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