Guerbet raspberry esters as a delivery system for natural antioxidants
View Patent ↗The present invention relates to raspberry seed oil derivatives derived by the reaction of a guerbet alcohol and cold pressed raspberry seed oil. The choice of cold pressed raspberry seed oil as a raw material in the preparation of the compounds of the present invention is critical, since it has been found that the cold pressed raspberry seed oil contains antioxidants, antimicrobial compounds and which when reacted with a guerbet alcohol result in products that deliver said actives to the skin and hair, resulting in protection of the skin and hair from environmental factors such as acid rain, ozone attack and UV degradation.
1. A raspberry guerbet ester, which conforms to the following structure;
R—C(O)OR′
wherein;
R is derived from cold pressed raspberry seed oil;
R′ is;
a is an integer ranging from 5 to 17;
b is an integer ranging from 3 to 15, wherein the R—C(O)— group has the following composition:
Component
% Weight
18:1 oleic
10–20
18:2 linoleic
30–40
18:3 linolenic (alpha)
45–55
alpha tocopherol
46 mg/gram
Ellagic Acid
450–650 ppm.
2. A raspberry guerbet ester of claim 1 wherein a is 5 and b is 3.
3. A raspberry guerbet ester of claim 1 wherein a is 7 and b is 5.
4. A raspberry guerbet ester of claim 1 wherein a is 9 and b is 7.
5. A raspberry guerbet ester of claim 1 wherein a is 11 and b is 9.
6. A raspberry guerbet ester of claim 1 wherein a is 13 and b is 11.
7. A raspberry guerbet ester of claim 1 wherein a is 17 and b is 15.
8. A process for conditioning skin which comprises contacting the skin with an effective conditioning concentration of a raspberry guerbet ester, which conforms to the following structure;
R—C(O)OR′
wherein;
R is derived from cold pressed raspberry seed oil;
R′ is;
a is an integer ranging from 5 to 17;
b is an integer ranging from 3 to 15, wherein the R—C(O)— group has the following composition:
Component
% Weight
18:1 oleic
10–20
18:2 linoleic
30–40
18:3 linolenic (alpha)
45–55
alpha tocopherol
46 mg/gram
Ellagic Acid
450–650 ppm.
9. A process of claim 8 wherein said effective conditioning concentration ranges from 0.01 to 15.0% by weight.
10. A process of claim 9 wherein a is 5 and b is 3.
11. A process of claim 9 wherein a is 7 and b is 5.
12. A process of claim 9 wherein a is 9 and b is 7.
13. A process of claim 9 wherein a is 11 and b is 9.
14. A process of claim 9 wherein a is 13 and b is 11.
15. A process of claim 9 wherein a is 17 and b is 15.