Thermally stable oil-in-water emulsions containing an oil that contains polyunsaturated fatty acids
AssigneeDsm IP Assets B.V.
InventorsJimbin Mai, Micah Hazzy Needham, Gang Su, Wei Wang-Nolan, Chia-Ping Charles Hsu
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Abstract
The present invention relates to thermally, stable oil-in-water emulsions comprising an oil comprising a polyunsaturated fatty acid, water, an emulsifier, and a water-soluble stabilizer, and processes for preparing the thermally stable oil-in-water emulsions. The thermally stable oil-in-water emulsions remain flowable at a temperature of −40° C., and are free from a variation in particle size after 9 months in storage at a temperature of −40° C. to −15° C.
Claims26
A thermally stable oil-in-water emulsion comprising:
- an oil comprising a polyunsaturated fatty acid,
- water,
- an emulsifier, and
- a water-soluble stabilizer selected from:
- a mixture of sodium chloride and a monosaccharide, a mixture of propylene glycol and a monosaccharide, and glycerol, wherein the water-soluble stabilizer is present in a concentration of 20% to 50% by weight of the emulsion, and
- wherein the thermally stable oil-in-water emulsion is flowable at a temperature of −40° C., and is free from a variation in particle size after 9 months in storage at a temperature of −40° C. to −15° C.
A thermally stable oil-in-water emulsion comprising:
- an oil comprising a polyunsaturated fatty acid in a concentration of 5% to 40% by weight,
- water in a concentration of 20% to 60% by weight,
- modified starch as an emulsifier, and
- a water-soluble stabilizer that is sodium chloride in a concentration of 10% to 25% by weight and a monosaccharide in a concentration of 3% to 15% by weight,
- wherein the thermally stable oil-in-water emulsion remains flowable at a temperature of −40° C., and is free from a variation in particle size after 9 months in storage at a temperature of −40° C. to −15° C.
A thermally stable oil-in-water emulsion comprising:
- an oil comprising a polyunsaturated fatty acid in a concentration of 5% to 40% by weight,
- water in a concentration of 20% to 60% by weight,
- modified starch as an emulsifier, and
- a water-soluble stabilizer that is propylene glycol in a concentration of 10% to 30% by weight and a monosaccharide in a concentration of 10% to 30% by weight,
- wherein the thermally stable oil-in-water emulsion remains flowable at a temperature of −40° C., and is free from a variation in particle size after 9 months in storage at a temperature of −40° C. to −15° C.
A thermally stable oil-in-water emulsion comprising:
- an oil comprising a polyunsaturated fatty acid in a concentration of 5% to 40% by weight,
- water in a concentration of 20% to 60% by weight,
- modified starch as an emulsifier, and
- a water-soluble stabilizer that is glycerol in a concentration of 20% to 50% by weight,
- wherein the thermally stable oil-in-water emulsion remains flowable at a temperature of −40° C., and is free from a variation in particle size after 9 months in storage at a temperature of −40° C. to −15° C.
A process for preparing a thermally stable oil-in-water emulsion, the process comprising:
- combining water and an emulsifier to provide an aqueous mixture,
- adding to the aqueous mixture an oil comprising a polyunsaturated fatty acid while mixing to provide a oil-in-water emulsion, and
- adding to the oil-in-water emulsion a water-soluble stabilizer selected from:
- a mixture of sodium chloride and a monosaccharide, a mixture of propylene glycol and a monosaccharide, and glycerol, wherein the water-soluble stabilizer is present in a concentration of 20% to 50% by weight of the emulsion to provide a thermally stable oil-in-water emulsion,
- wherein the thermally stable oil-in-water emulsion remains flowable at a temperature of −40° C., and is free from a variation in particle size after 9 months in storage at a temperature of −40° C. to −15° C.
Dependencies are inferred from the claim text.