US5230916A
Expired / Lapsed
US
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Ascorbic acid complex having antioxidant function and improved solubility in lipid materials
Assignee: Kalamazoo Holdings Inc
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Filing: 1991-12-23
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Granted: 1993-07-27
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Expires: 2011-12-23
Abstract
Abstract A natural antioxidant for stabilizing polyunsaturated oils is disclosed. This oil-soluble antioxidant is prepared by dissolving ascorbic acid in a polar solvent, dissolving phospholipid in a non-polar solvent and then mixing the ascorbic acid solution with the phospholipid solution. After removing the solvent a product is formed which has anti-oxidant properties and is soluble in non-polar solvents.
Inventors
- 👤 Stephen S. Chang
- 👤 Kejian J. Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:13
CPC Classifications
A; A61; A61Q; A61Q19/00; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/733; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55; A61K8/553; A61K8/67; A61K8/676; A61K8/678; A61K8/96; A61K8/97; A61K8/9783; A61K8/9789; A61K8/9794; C; C09; C09K; C09K15/00; C09K15/04; C09K15/34; C11; C11B; C11B5/00; C11B5/0085; C11B5/0092; A61K2800/00; A61K2800/40; A61K2800/52; A61K2800/522
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
66 words
A method of preparing an oil-soluble antioxidant composition which comprises: dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield a product having antioxidant function which is soluble in non-polar solvents.
Claim 2
Independent Claim
66 words
A method of preparing an oil-soluble antioxidant composition which comprises: dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield a product having antioxidant function which is soluble in non-polar solvents.
Claim 3
Independent Claim
84 words
A method of preparing an oil soluble antioxidant composition which comprises: dissolving ascorbic acid in a lower alkyl alcohol having up to three carbon atoms in the alkyl group, to from a solution thereof; dissolving a phospholipid in a paraffinic hydrocarbon having five to eight carbon atoms in the molecule, to form a solution thereof; mixing the solution of ascorbic acid with the solution of the phospholipid; removing solvent from said mixture; and recovering an ascorbic acid-phospholipid antioxidant composition having an enhanced oil solubility.
Claim 4
Independent Claim
84 words
A method of preparing an oil soluble antioxidant composition which comprises: dissolving ascorbic acid in a lower alkyl alcohol having up to three carbon atoms in the alkyl group, to from a solution thereof; dissolving a phospholipid in a paraffinic hydrocarbon having five to eight carbon atoms in the molecule, to form a solution thereof; mixing the solution of ascorbic acid with the solution of the phospholipid; removing solvent from said mixture; and recovering an ascorbic acid-phospholipid antioxidant composition having an enhanced oil solubility.
Claim 5
Dependent Claim
30 words
The method of claim 2, wherein said phospholipid is derived from a vegetable material selected from the group consisting of soybean, rice, corn, cotton seed, rapeseed, canola, and compositions thereof.
Claim 6
Dependent Claim
13 words
The method of claim 2 wherein the phospholipid is a deoiled soybean phospholipid.
Claim 7
Dependent Claim
15 words
The method as described in claim 2 wherein said lower alkyl alcohol is anhydrous ethanol.
Claim 8
Dependent Claim
14 words
The method as described in claim 2 wherein said second organic solvent is hexane.
Claim 9
Dependent Claim
25 words
The method as described in claim 2 wherein the weight ratio of ascorbic acid to phospholipid is between 1 to 1.5 and 1 to 60.
Claim 10
Dependent Claim
16 words
The method of claim 2 wherein said ascorbic acid-phospholipid composition is combined with other antioxidant components.
Claim 11
Dependent Claim
29 words
The method of claim 2 wherein said ascorbic acid-phospholipid composition is combined with an antioxidant selected from the group consisting of citric acid, tocopherols, rosemary extract, and mixtures thereof.
Claim 12
Dependent Claim
22 words
The method of claim 2 wherein said solvents are completely removed from said mixture and a dry ascorbic acid-phospholipid composition is recovered.
Claim 13
Dependent Claim
65 words
An oil-soluble antioxidant composition produced by the process of dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield a product having antioxidant function which is soluble in non-polar solvents.
Claim 14
Dependent Claim
65 words
An oil-soluble antioxidant composition produced by the process of dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield a product having antioxidant function which is soluble in non-polar solvents.
Claim 15
Dependent Claim
89 words
An oil soluble antioxidant composition having enhanced oil solubility, said composition produced by the process of: dissolving ascorbic acid in a lower alkyl alcohol having up to three carbon atoms in the alkyl group, to from a solution thereof; dissolving a phospholipid in a paraffinic hydrocarbon having five to eight carbon atoms in the molecule, to form a solution thereof; mixing the solution of ascorbic acid with the solution of the phospholipid; removing solvent from said mixture; and recovering an ascorbic acid-phospholipid antioxidant composition having an enhanced oil solubility.
Claim 16
Dependent Claim
89 words
An oil soluble antioxidant composition having enhanced oil solubility, said composition produced by the process of: dissolving ascorbic acid in a lower alkyl alcohol having up to three carbon atoms in the alkyl group, to from a solution thereof; dissolving a phospholipid in a paraffinic hydrocarbon having five to eight carbon atoms in the molecule, to form a solution thereof; mixing the solution of ascorbic acid with the solution of the phospholipid; removing solvent from said mixture; and recovering an ascorbic acid-phospholipid antioxidant composition having an enhanced oil solubility.
Claim 17
Independent Claim
75 words
A method of preparing an ascorbic acid complex having improved solubility in lipid materials which comprises: dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield an ascorbic acid complex having antioxidant function and having improved solubility in lipid materials.
Claim 18
Independent Claim
75 words
A method of preparing an ascorbic acid complex having improved solubility in lipid materials which comprises: dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield an ascorbic acid complex having antioxidant function and having improved solubility in lipid materials.
Claim 19
Dependent Claim
74 words
An ascorbic acid complex having improved solubility in lipid materials produced by the process of: dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield an ascorbic acid complex having antioxidant function and having improved solubility in lipid materials.
Claim 20
Dependent Claim
74 words
An ascorbic acid complex having improved solubility in lipid materials produced by the process of: dissolving an ascorbic acid in a polar solvent to form a solution thereof; dissolving a phospholipid in a non-polar solvent to form a solution thereof; mixing the solution of the ascorbic acid with the solution of phospholipid; and removing solvent from said mixture to yield an ascorbic acid complex having antioxidant function and having improved solubility in lipid materials.
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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) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |