Claims
- 1. A shelf stable, purified vitamin A preparation wherein less than 5% by weight of the vitamin A content of the preparation is beta-ionone and solvents, and wherein less than 5% of the vitamin A is a cis-isomer comprising a mixture of tocopherol and vitamin A, the ratio of tocopherol to vitamin A being from 0.05:1 to 2:1; said vitamin A preparation being encapsulated.
- 2. A shelf stable vitamin A preparation according to claim 1 wherein the ratio of tocopherol to vitamin A is from 0.10:1 to 1:1.
- 3. A shelf stable vitamin A preparation according to claim 2 wherein the vitamin A is an alkyl ester of retinol.
- 4. An encapsulated shelf stable vitamin A preparation according to claim 3 wherein the vitamin A preparation is encapsulated with a member of the group selected from gums, starches, pectin, gelatin, lipid hardstocks, ethyl cellulose or mixtures thereof.
- 5. A shelf stable vitamin A preparation according to claim 2 wherein the tocopherol is alpha tocopherol.
- 6. A shelf stable vitamin A preparation according to claim 5 which contains less than 3% beta-ionone and less than 2% cis-isomers of vitamin A based on the weight of vitamin A.
- 7. A shelf stable vitamin A preparation according to claim 1 which contains less than 3% beta-ionone and less than 2% cis-isomers of vitamin A based on the weight of vitamin A.
- 8. A process for removing off-flavor and odors from vitamin A comprising:
- (a) degassing a sample of vitamin A;
- (b) heating degassed vitamin A in the absence of light at a pressure of less than 4 mm Hg and a temperature of less than 170.degree. C. with an inert gas sparge until the beta-ionone and solvents concentration is less than 5% by weight of the vitamin A;
- (c) mixing the vitamin A with from about 0.05:1 to 2:1 parts of tocopherol/part of vitamin A; and
- (d) encapsulating the vitamin A tocopherol mixture.
- 9. A process for removing off-flavor and odors from vitamin A comprising:
- (a) degassing a sample of vitamin A;
- (b) mixing the vitamin A with from about 0.05:1 to 2:1 parts of tocopherol/part of vitamin A;
- (c) heating degassed vitamin A in the absence of light at a pressure of less than 4 mm Hg and a temperature of less than 170.degree. C. with an inert gas sparge until substantially of all the beta-ionone and solvents are removed; and
- (d) encapsulating the vitamin A tocopherol mixture vitamin A.
- 10. A process according to claim 8 wherein the vitamin A in step (b) is heated at a temperature of from about 130.degree. C. to about 150.degree. C. at a pressure of from 0.3 to about 0.6 mm Hg.
- 11. A process according to claim 9 wherein the vitamin A mixture in step (c) is heated at a temperature of from 130.degree. C. to 150.degree. C. at a pressure of about 0.3 to about 0.6 mm Hg.
- 12. A process according to claim 11 wherein the sparging gas in step (c) is nitrogen.
- 13. A process according to claim 8 wherein the ratio of tocopherol to vitamin A in the vitamin A and tocopherol mixture is from 0.1:1 to 1:1.
- 14. A process according to claim 13 wherein the vitamin A of step (a) is an alkyl ester of retinol.
- 15. A process according to claim 14 wherein the vitamin A and tocopherol mixture is encapsulated with a member of the group selected from gums, starches, pectin, gelatin, lipid hardstocks, ethyl cellulose or mixtures thereof.
- 16. A process according to claim 13 wherein the tocopherol is alpha tocopherol.
- 17. A process according to claim 15 wherein the vitamin A contains less than 3% beta-ionone and less than 2% cis-isomers of vitamin A based on the weight of vitamin A.
- 18. A process according to claim 11 which contains less than 3% beta-ionone and less than 2% cis-isomers of vitamin A based on the weight of vitamin A.
- 19. A food product comprising the composition of claim 1.
Parent Case Info
This application is a continuation-in-part application of application of Sarama et al, Ser. No. 08/285,242 filed Aug. 3, 1994, now U.S. Pat. No. 5,426,248 issued Jun. 20, 1995.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO9210941 |
Jul 1992 |
EPX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
285242 |
Aug 1994 |
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