A coenzyme Q 10 -containing water soluble composition comprises coenzyme Q 10 , a hydrophilic polyglycerol fatty acid ester, a lipophilic sucrose fatty acid ester and an aqueous phase component and a process for producing the same are disclosed. A coenzyme Q 10 -containing water-soluble dry powder can be obtained by drying the above-mentioned coenzyme Q 10 -containing water soluble composition. A food, functional food, beverage, pharmaceutical product, quasi drug, cosmetic, or animal food can be obtained by using the above-mentioned coenzyme Q 10 -containing water soluble composition or the above-mentioned coenzyme Q 10 -containing water-soluble dry powder. The coenzyme Q 10 -containing water soluble composition has a high bioavailability, and maintains a stable emulsion form for a long period of time from refrigeration temperature to room temperature and allows efficient supply.
1. A coenzyme Q 10 -containing water soluble composition which comprises coenzyme Q 10 , a hydrophilic polyglycerol fatty acid ester, a lipophilic sucrose fatty acid ester, and an aqueous phase component,
wherein the hydrophilic polyglycerol fatty acid ester is a decaglycerol mon-saturated fatty acid ester constituted of a fatty acid residue containing 12 or more carbon atoms.
2. The coenzyme Q 10 -containing water soluble composition according to claim 1 , wherein the saturated fatty acid ester is at least one species selected from the group consisting of a laurate ester, a myristate ester and a palmitate ester.
3. The coenzyme Q 10 -containing water soluble composition according to claim 1 , wherein the lipophilic sucrose fatty acid ester is an ester composed of a higher fatty acid and acetic acid.
4. The coenzyme Q 10 -containing water soluble composition according to claim 1 , which comprises 0.01 to 40% by weight of coenzyme Q 10 in the whole water soluble composition.
5. The coenzyme Q 10 -containing water soluble composition according to claim 1 , wherein the content of the hydrophilic polyglycerol fatty acid ester is 1-10 to 500 parts by weight to 100 parts by weight of coenzyme Q 10 .
6. The coenzyme Q 10 -containing water soluble composition according to claim 1 , wherein the content of the lipophilic sucrose fatty acid ester is 1 to 200 parts by weight to 100 parts by weight of coenzyme Q 10 .
7. The coenzyme Q 10 -containing water soluble composition according to claim 1 , wherein the aqueous phase component is a polyhydric alcohol and/or water.
8. A coenzyme Q 10 -containing water-soluble dry powder which is obtained by drying the coenzyme Q 10 -containing water soluble composition according to claim 1 .
9. A food, functional food, beverage, pharmaceutical product, quasi drug, cosmetic, or animal food which is obtained by using the coenzyme Q 10 -containing water soluble composition according to claim 1 or which is obtained by using a coenzyme Q 10 -containing water-soluble dry powder which is obtained by drying the coenzyme Q 10 -containing water soluble composition according to claim 1 .
10. The coenzyme Q 10 -containing water soluble composition according to claim 1 which is an oil-in-water emulsion.
11. The coenzyme Q 10 -containing water soluble composition according to claim 10 , wherein the median size of emulsion particles in the water soluble composition is not larger than 100 nm.
12. The coenzyme Q 10 -containing water soluble composition according to claim 1 , wherein the aqueous phase component is a mixture of a polyhydric alcohol and water, and the polyhydric alcohol is selected from the group consisting of glycerol and sorbitol.