A kind of oil composition and preparation method thereof
A technology of oil composition and oil, applied in the direction of edible oil/fat, food science, application, etc., can solve the problem of low bioavailability of phytosterols
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[0052] The preparation method of the oil composition disclosed in the invention comprises mixing phytosterol, oil, emulsifier and water and homogenizing;
[0053] Preferably, the following steps are included:
[0054] Step (1): Phytosterols are mixed with grease to form an oil phase;
[0055] Step (2): the emulsifier is mixed with the water phase to form the water phase;
[0056] Step (3): oil phase and water phase are mixed, preferably, carry out shear homogenization and / or high-pressure homogenization;
[0057] The homogenization refers to conventional physical homogenization, including but not limited to high-pressure homogenization, shearing homogenization, and the like.
[0058] In the composition of fatty acid residues of triglycerides in the oil, C12:0 fatty acids account for 20.0-40.0 wt% of the total fatty acids, and the ratio of C12:0 to C18:0 is 15:1-10:1.
[0059] The above-mentioned preparation method, wherein in weight percentage, phytosterol 0.05-2.0wt%, oil ...
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[0080] Table 1 has listed the fatty acid composition of 13 kinds of oils and fats, and wherein grease 1~6 is the grease that has the fatty acid composition that the present invention limits, and promptly the content of C12:0 is 20~40% and the ratio of C12:0 and C18:0 is 15~10:1, which is formulated from grease A and B.
[0081] Table 2 is the nanoemulsion formulations of the examples and comparative examples using the grease in Table 1 as the oil base respectively, wherein the preparation steps of the nanoemulsion are as follows:
[0082] (1) phytosterols (brassicasterol 3.5%, campesterol 25.5%, stigmasterol 20% and sitosterol 51%) are fully dispersed in the described grease composition by 600rpm magnetic stirring, ultrasonic 60min, form clear and transparent oil phase;
[0083] (2) Fully disperse the emulsifier into water to form a uniform water phase;
[0084] (3) After the oil phase and the water phase are mixed together, first use 10000rpm normal pressure shearing for 2m...
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