US4154623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing refined starch hydrolysates from starch-containing cereals
Assignee: Pfeifer and Langen GmbH and Co KG
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Filing: 1978-01-23
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Granted: 1979-05-15
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Expires: 1998-01-23
Abstract
Abstract A process of preparing a starch hydrolysate from wheat, barley or rye comprising the steps of contacting kernels of wheat, barley or rye with an aqueous solution to hydrate and soften the kernels, gently wet-milling the hydrated and softened kernels, separating fibres and pentosans attached thereto as well as germs and gluten from the wet-milled product to form a starch-containing slurry essentially free of insoluble pentosans, carefully washing the fraction to form a refined, starch-containing product, hydrolysing the refined product to form a starch hydrolysate and finally refining the hydrolysate.
Inventors
- 👤 Dieter Schwengers
- 👤 Cornelis Bos
- 👤 Erik Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:45
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/04; C08B30/042; C13; C13K; C13K1/00; C13K1/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
A method of preparing refined starch hydrolysates from kernels of a cereal selected from the group consisting of wheat, barley and rye, consisting essentially of the steps of hydrating and softening the kernels with an aqueous solution for a period of from 5 to 15 hours at a temperature within the range 40°-60° C., gently milling the hydrated and softened kernels so as to avoid the release of pentosans from the fibres of said kernels, separating the fibres and pentosans attached thereto from the wet-milled product to form a starch fraction and a fibre fraction, washing the starch fraction with an aqueous medium to remove soluble components therefrom, hydrolyzing the starch fraction thus obtained to form a hydrolysate and refining the partially or wholly hydrolized product to remove gluten.
Claim 2
Independent Claim
129 words
A method of preparing refined starch hydrolysates from kernels of a cereal selected from the group consisting of wheat, barley and rye, consisting essentially of the steps of hydrating and softening the kernels with an aqueous solution for a period of from 5 to 15 hours at a temperature within the range 40°-60° C., gently milling the hydrated and softened kernels so as to avoid the release of pentosans from the fibres of said kernels, separating the fibres and pentosans attached thereto from the wet-milled product to form a starch fraction and a fibre fraction, washing the starch fraction with an aqueous medium to remove soluble components therefrom, hydrolyzing the starch fraction thus obtained to form a hydrolysate and refining the partially or wholly hydrolized product to remove gluten.
Claim 3
Dependent Claim
19 words
The method as claimed in claim 1, wherein the step of separating fibres and pentosans is effected by sieving.
Claim 4
Dependent Claim
20 words
The method as claimed in claim 1, wherein the step of washing of the starch-containing fraction is effected by decantation.
Claim 5
Dependent Claim
14 words
The method as claim in claim 1, wherein the starch-containing fraction is washed twice.
Claim 6
Dependent Claim
15 words
The method as claimed in claim 1, wherein said kernels of cereal are wheat kernels.
Claim 7
Dependent Claim
22 words
The method as claimed in claim 1, wherein the step of hydrating and softening of the cereal kernels is carried out countercurrently.
Claim 8
Dependent Claim
23 words
The method as claimed in claim 6, wherein the step of hydrating and softening of the cereal kernels is effected in a diffuser.
Claim 9
Dependent Claim
15 words
The method as clained in claim 1, wherein said aqueous solution contains SO 2 .
Claim 10
Dependent Claim
19 words
The method as claimed in claim 8, wherein said aqueous solution contains between 0.1% and 0.2% SO 2 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |