Patent US3784409A successfully refreshed from Google Patents.
US3784409A
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Process for purifying glucose syrups containing fructose
Assignee: Standard Brands Inc
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Filing: 1971-06-01
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Granted: 1974-01-08
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Expires: 1991-06-01
Abstract
Abstract A method of purifying enzymatically isomerized glucose syrups containing fructose. These syrups contain salts which contribute to the ash content, colored bodies, odoriferous materials, and other impurities. To remove these impurities, the isomerized, glucose syrups are treated with a strong acid cation exchange resin in the hydrogen form which removes therefrom a portion of the colored bodies and appreciable quantities of the metallic constituents of the salts. Following this treatment, the syrups are subjected to a carbon treatment which removes the major portion of the colored bodies and odoriferous materials. The syrups are then treated with a weak base anion exchange resin in the free base form, a strong acid cation exchange resin in the hydrogen form, and with a strong base anion exchange resin in the hydroxyl form.
Inventors
- 👤 W Nelson
- 👤 C Hinman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:19
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
47 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 1, wherein the first treatment with a strong acid cation exchange resin in the hydrogen form adjusts the pH of the syrup to a value below about 3 by hydrogen ion exchange.
Claim 2
Dependent Claim
43 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 2, wherein the weak base anion exchange resin in the free base form adjusts the pH of the syrup to a range of about 3 to about 7.
Claim 3
Dependent Claim
49 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 3, wherein the treatment with the strong base anion exchange resin in the hydroxyl form is performed to remove substantially all the remaining potential color-forming bodies, and odoriferous and flavoring materials from the syrup.
Claim 4
Dependent Claim
37 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 4, wherein the temperature of the syrup during purification is in the temperature range of from about 37* to about 60* C.
Claim 5
Dependent Claim
49 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 5, wherein prior to treatment with a strong acid cation exchange resin the syrup is filtered and the pH of the syrup is adjusted to a value of from about 4 to about 5.
Claim 6
Dependent Claim
44 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 4, wherein the treatments are performed to obtain a purified syrup having a color value below about 0.05 when measured according to the Corn Refiners Association Incorporated Method F-14.
Claim 7
Dependent Claim
44 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 7, wherein the treatments are performed to obtain a purified syrup having a color value below about 0.01 when measured according to the Corn Refiners Association Incorporated Method F-14.
Claim 8
Dependent Claim
34 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 7, wherein the enzymatically isomerized glucose syrup was isomerized by glucose isomerase derived from microorganisms of the Streptomyces genus.
Claim 9
Dependent Claim
38 words
A method of purifying an enzymatically isomerized glucose syrup containing fructose as defined in claim 9, wherein the enzymatically isomerized glucose syrup was isomerized by glucose isomerase derived from Streptomyces sp. ATCC 21175 or Streptomyces sp. ATCC 21176.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |