The invention relates to
pterostilbene nano-capsules and a preparation method thereof. The
pterostilbene nano-capsules are prepared from, by weight, liquid oil 0.1-20%,
pterostilbene active substance 0.1%-15%, an emulsifier 1%-35%, polyols 40-85% and deionized water 8-50%. The preparation method comprises the steps that (A) the liquid oil and the emulsifier are mixed together and heated for
dissolution, then the pterostilbene is added, and stirring is performed till the pterostilbene is completely dissolved; (B) the polyols and the water are mixed and heated for
dissolution, and even stirring is performed; (C) the solution obtained in the step (B) is added to the solution obtained in the step (A), even mixing and stirring are performed, and the solution is taken out and cooled to obtain transparent blue gel, namely the pterostilbene nano-capsules. The pterostilbene nano-capsules are simple, controllable, mild in operation, good in
repeatability, high in pterostilbene load and high in stability, and the problem that the pterostilbene is insoluble in water and the content drops rapidly during high-temperature operation is solved.