Lipophilic Antioxidant

Abstract

The present invention relates to a composition containing a first component selected from the group consisting of at least one polyphenol, at least one phenolic diterpene and mixtures of both, at least one glyceride, at least one hydrophilic emulsifier and at least one hydrophobic emulsifier, and also to the use of this mixture as lipophilic antioxidant.

1 .- 10 . (canceled) 
     
     
         11 . A composition comprising:
 (a) 1 -20% of a first component selected from the group consisting of at least one polyphenol, at least one phenolic diterpene and combinations thereof,   (b) 2-20% of least one glyceride,   (c) 3-60% of least one hydrophilic emulsifier, and   (d) 3-60% at least one hydrophobic emulsifier, and   (e) 0-30% water   wherein the hydrophilic emulsifier is selected from the group consisting of mono- and diacetyl tartaric mono- and diglycerides of edible fatty acids, citric mono- and diglycerides of edible fatty acids, lactic mono- and diglycerides of edible fatty acids, acetic mono- and diglycerides of edible fatty acids and sugar esters.   
     
     
         12 . The composition of  claim 11 , wherein component (a) is catechin or a mixture of catechins. 
     
     
         13 . The composition of  claim 11 , wherein component (a) is carnosolic acid. 
     
     
         14 . The composition of  claim 11 , which comprises 15 to 35% by weight of the hydrophilic emulsifier, and 15 to 35% by weight of the hydrophobic emulsifier. 
     
     
         15 . The composition of  claim 11 , wherein the hydrophilic emulsifier is a sugar ester. 
     
     
         16 . The composition of  claim 11 , wherein the hydrophobic emulsifier is selected from the group consisting of polyglycerol polyricinoleates, polyglycerol esters of fatty acids, and glycerol monoesters of fatty acids. 
     
     
         17 . The composition of  claim 16 , wherein said hydrophobic emulsifier is a monoglyceride of a fatty acid having about 10 to about 30 carbon atoms. 
     
     
         18 . The composition of  claim 16 , wherein said hydrophobic emulsifier is selected from the group consisting of glycerol monooleate and glycerol monostearate. 
     
     
         19 . A process for producing the composition of  claim 11  which comprises:
 (i) providing a mixture containing the hydrophilic emulsifier (c) and the hydrophobic emulsifier (d); 
 (ii) adding component (a) to this mixture; and 
 (iii) thereafter adding the glyceride component (b). 
 
     
     
         20 . A composition comprising:
 (a) at least one oil or fat; and   (b) about 0.05 to 3% by weight of the composition of  claim 11 , based on the weight of the at least one oil or fat.   
     
     
         21 . The composition of  claim 20 , wherein the oil or fat is selected from the group consisting of fats and oils which contain unsaturated fatty acid moieties, fish oil, sunflower oil, borage oil, glycerides which contain acyl moieties of conjugated linoleic acid, and triglycerides having acyl moieties of 6 to 24 carbon atoms. 
     
     
         22 . A method for improving the oxidation stability of lipophilic media comprising adding the composition of  claim 11  to the lipophilic medium in an amount effective to improve the oxidation resistance over said medium without the added composition.