| abstract |
PROBLEM TO BE SOLVED: To provide a method for producing an emulsion having a carotenoid as an active ingredient, maintaining a high ratio of all-trans form of the carotenoid, with good productivity, conveniently and industrially advantageously. SOLUTION: A suspension in which a carotenoid is suspended in a high-boiling organic liquid is heated to a temperature in the range of 120 to 700 ° C. in a conduit having an inner diameter of 0.1 to 50 mm and a residence time of 0.05. A method for producing a carotenoid emulsion, characterized in that the carotenoid is dissolved by heating by flowing in a range of about 5 seconds, and the resulting solution is then immediately added to an aqueous solution containing an emulsifier to emulsify the carotenoid. |