US3977897A
Expired / Lapsed
US
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Process for preparing a non-chemically inhibited starch
Assignee: Ingredion Inc
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Filing: 1975-09-08
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Granted: 1976-08-31
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Expires: 1995-09-08
Abstract
Abstract A non-chemically inhibited starch is prepared by controlled heating at a specified pH of an aqueous suspension of an amylose-containing starch in intact granule form and an inorganic salt effective in raising the gelatinization temperature of the starch.
Inventors
- 👤 Otto B. Wurzburg
- 👤 Leo H. Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:56
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A process for preparing a non-chemically inhibited starch comprising the steps of a. preparing a suspension comprising i. 100 parts of amylose-containing starch in intact granule form, ii. 10-60 parts of an inorganic salt effective in raising the gelatinization temperature of said starch; and iii. sufficient water to suspend said starch; b. maintaining the pH of said suspension at a level of 3 to 9; and c. heating said dispersion at a temperature of 50°-100°C. for a period of 0.5 to 30 hours, wherein said inorganic salt is selected from the group consisting of sodium sulfate, ammonium sulfate, magnesium sulfate, potassium sulfate, sodium chloride, potassium chloride, sodium phosphate, potassium phosphate, ammonium chloride and ammonium phosphate.
Claim 2
Dependent Claim
115 words
A process for preparing a non-chemically inhibited starch comprising the steps of a. preparing a suspension comprising i. 100 parts of amylose-containing starch in intact granule form, ii. 10-60 parts of an inorganic salt effective in raising the gelatinization temperature of said starch; and iii. sufficient water to suspend said starch; b. maintaining the pH of said suspension at a level of 3 to 9; and c. heating said dispersion at a temperature of 50°-100°C. for a period of 0.5 to 30 hours, wherein said inorganic salt is selected from the group consisting of sodium sulfate, ammonium sulfate, magnesium sulfate, potassium sulfate, sodium chloride, potassium chloride, sodium phosphate, potassium phosphate, ammonium chloride and ammonium phosphate.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said starch contains 18-30 percent amylose based on the total starch weight.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said starch is a root starch.
Claim 5
Dependent Claim
12 words
The process of claim 3 wherein said starch is a potato starch.
Claim 6
Dependent Claim
14 words
The process of claim 2 wherein said salt is sodium sulfate or potassium sulfate.
Claim 7
Dependent Claim
17 words
The process of claim 2 wherein said suspension contains from 20 to 50 parts of said salt.
Claim 8
Dependent Claim
21 words
The process of claim 2 wherein said suspension contains 110-200 parts of water and is heated to a temperature of 60°-90°C.
Claim 9
Dependent Claim
17 words
The process of claim 2 wherein said pH is maintained at a level of 4 - 7.
Claim 10
Dependent Claim
13 words
The process of claim 1 wherein said heating is performed under atmospheric pressure.
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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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |