United States Patent


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Bog'liq
Preparation of inulin products

DP components (DP 1, 2, and 3-4) were calculated to have

65

20-33

11.73%

12.58%

2.27%

0%

negative % rejection on the lOK NMWCO module but the
value entered was 0% rejection. '




12-20

23.71%

22.25%

9.95%

0%



membrane filtration DP Range 10KC1 3.5KC2 2.5KC3 1.0KC4 33-54 1.93% 3.60% 0% 0%



TABLE V-continued

Composition of Inulin Fractions Obtained By Cross-flow


membrane filtration
What is claimed is:

  1. A process for separating a first aqueous inulin solution containing carbohydrates having a range of degrees of polymerization into fractions having different average degrees of polymerization which comprises subjecting an aqueous inulin solution to ultrafiltration through a mem­ brane having a predetermined pore size whereby inulin fractions having average degrees of polymerization less than a predetermined value pass through said membrane as permeate and inulin fractions having average degrees of polymerization greater than said predetermined value are collected as retentate.

  2. The process of claim 1 wherein the ultrafiltration membrane has a spiral wound configuration.

  3. The process of claim 1 wherein said first aqueous inulin solution contains carbohydrates having degrees of polymer­ ization within the range of from 1 (fructose or glucose) to about sixty.

  4. The process of claim
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