US4142916A
Expired / Lapsed
US
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Method for preparing a non-hygroscopic lactulose-containing powder
Assignee: Morinaga Milk Industry Co Ltd
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Filing: 1978-05-03
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Granted: 1979-03-06
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Expires: 1998-05-03
Abstract
Abstract Method for manufacturing a lactulose powder with a low hygroscopicity by mixing ethyl alcohol to a highly hygroscopic lactulose-containing powder followed by allowing the resulting mixture to stand or stirring it for at least 1 hour, separating the lactulose-containing material insoluble in ethyl alcohol from the mixture and removing ethyl alcohol from the material separated.
Inventors
- 👤 Katsuhiro Ogasa
- 👤 Mamoru Tomita
- 👤 Teruhiko Mizota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:10
CPC Classifications
C; C13; C13K; C13K13/00; C13K13/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
A method for preparing a non-hygroscopic lactulose-containing powder characterized by comprising the steps: (1) adding at least 0.8 part by weight of ethyl alcohol to 1 part by weight of highly hygroscopic lactulose-containing powder the lactulose content of which is above 55% by weight while adjusting the amount of ethyl alcohol to be added so that the water content in mixture is below 2% by weight; (2) allowing the resulting mixture to stand or stirring it at a temperature below the boiling point of ethyl alcohol for at least 1 hour, and cooling, if necessary; (3) separating an ethyl alcohol insoluble lactulose-containing material precipitated; and (4) removing ethyl alcohol from said material.
Claim 2
Independent Claim
112 words
A method for preparing a non-hygroscopic lactulose-containing powder characterized by comprising the steps: (1) adding at least 0.8 part by weight of ethyl alcohol to 1 part by weight of highly hygroscopic lactulose-containing powder the lactulose content of which is above 55% by weight while adjusting the amount of ethyl alcohol to be added so that the water content in mixture is below 2% by weight; (2) allowing the resulting mixture to stand or stirring it at a temperature below the boiling point of ethyl alcohol for at least 1 hour, and cooling, if necessary; (3) separating an ethyl alcohol insoluble lactulose-containing material precipitated; and (4) removing ethyl alcohol from said material.
Claim 3
Dependent Claim
38 words
The method for preparing a non-hygroscopic lactulose-containing powder as set forth in claim 1 wherein the rate of ethyl alcohol added is 1.5 to 2.0 parts by weight to 1 part by weight of highly hygroscopic lactulose-containing powder.
Claim 4
Dependent Claim
34 words
The method for preparing a non-hygroscopic lactulose-containing powder as set forth in claim 1 wherein said mixture is allowed to stand or stirred at a temperature of 30° C. for 24 to 48 hours.
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |