MANUFACTURE OF HIGH PURITY STEARIN FROM HIGH OLEIC ACID AND LOW PALMITIC ACID SUNFLOWER OIL
This disclosure concerns methods for producing a high purity stearin comprising, for example, providing a sunflower oil comprising no more than about 4% total saturated fat and hydrogenating the sunflower oil. By way of further example, a method for producing a high purity tristearin may comprise providing sunflower oil comprising at least about 88% oleic acid and hydrogenating the sunflower oil. High purity stearin produced by methods, such as the foregoing, are also disclosed.
1 . A method for producing a high purity tristearin, the method comprising:
providing sunflower oil comprising no more than about 4% total saturated fat; and
hydrogenating the sunflower oil.
2 . The method according to claim 1 , wherein the sunflower oil comprises at least about 88% oleic acid (18:1).
3 . The method according to claim 1 , wherein the sunflower oil comprises at least about 92% oleic acid (18:1).
4 . The method according to claim 1 , wherein the sunflower oil comprises less than about 3% combined 16:0 and 16:1 fatty acids.
5 . The method according to claim 1 , wherein the sunflower oil comprises less than about 4% palmitic acid (16:0).
6 . The method according to claim 1 , wherein the sunflower oil comprises less than about 3% palmitic acid (16:0).
7 . The method according to claim 1 , wherein the sunflower oil comprises at least about 90% oleic acid (18:1).
8 . The method according to claim 1 , wherein the sunflower oil comprises at least about 92% oleic acid (18:1).
9 . The method according to claim 1 , wherein the sunflower oil comprises less than or equal to about 4% total combined palmitic acid (16:0) and stearic acid (18:0).
10 . The method according to claim 1 , wherein the sunflower oil comprises less than or equal to about 3.3% total combined palmitic acid (16:0) and stearic acid (18:0).
11 . The method according to claim 1 , wherein the sunflower oil comprises up to about 94% oleic acid (18:1) and less than about 4% palmitic acid (16:0).
12 . The method according to claim 1 , wherein the sunflower oil comprises up to about 94% oleic acid (18:1) and less than about 2.1% palmitic acid (16:0).
13 . The method according to claim 1 , wherein the hydrogenated sunflower oil comprises a combined stearic acid and palmitic acid content of at least about 98% of the total fatty acids in the hydrogenated sunflower oil.
14 . The method according to claim 1 , wherein hydrogenating the sunflower oil comprises heating the sunflower oil with a metal catalyst in the presence of pressurized hydrogen gas.
15 . A high purity tristearin produced by the method of claim 1 .
16 . The high purity tristearin of claim 10 , wherein the tristearin comprises a total stearic acid content of at least 96%.
17 . The high purity tristearin of claim 10 , wherein the tristearin comprises a combined content of stearic acid and palmitic acid of at least 98% of the total fatty acids in the oil.
18 . A method of producing a high purity tristearin, the method comprising:
providing sunflower oil comprising at least about 88% oleic acid (18:1); and
hydrogenating the sunflower oil.
19 . The method according to claim 18 , wherein the sunflower oil comprises less than about 4% palmitic acid (16:0).
20 . The method according to claim 18 , wherein the sunflower oil comprises less than about 3% palmitic acid (16:0).
21 . The method according to claim 18 , wherein the sunflower oil comprises at least about 90% oleic acid (18:1).
22 . The method according to claim 18 , wherein the sunflower oil comprises at least about 92% oleic acid (18:1).
23 . The method according to claim 18 , wherein the sunflower oil comprises less than or equal to about 4% total combined palmitic acid (16:0) and stearic acid (18:0).
24 . The method according to claim 18 , wherein the sunflower oil comprises less than or equal to about 3.3% total combined palmitic acid (16:0) and stearic acid (18:0).
25 . The method according to claim 18 , wherein the sunflower oil comprises up to about 94% oleic acid (18:1) and less than about 4% palmitic acid (16:0).
26 . The method according to claim 18 , wherein the sunflower oil comprises up to about 94% oleic acid (18:1) and less than about 2.1% palmitic acid (16:0).
27 . The method according to claim 18 , wherein the hydrogenated sunflower oil comprises a combined stearic acid and palmitic acid content of at least about 98% of the total fatty acids in the hydrogenated sunflower oil.
28 . The method according to claim 18 , wherein hydrogenating the sunflower oil comprises heating the sunflower oil with a metal catalyst in the presence of pressurized hydrogen gas.
29 . A high purity tristearin produced by the method of claim 18 .
30 . The high purity tristearin of claim 29 , wherein the tristearin comprises a total stearic acid content of at least 96%.
31 . The high purity tristearin of claim 29 , wherein the tristearin comprises a combined content of stearic acid and palmitic acid of at least 98% of the total fatty acids in the oil.