The invention relates to the technical field of eutectic crystals, in particular to an
aesculin and
mannitol eutectic
crystal and a preparation method and application thereof.The XRD spectrum of the eutectic
crystal at least has characteristic
diffraction peaks at the positions where the angle 2 theta is 13.80 degrees, 17.41 degrees, 18.87 degrees, 19.99 degrees, 20.55 degrees, 21.46 degrees, 25.29 degrees, 27.15 degrees, 27.66 degrees, 28.30 degrees, 33.32 degrees, 34.13 degrees, 35.67 degrees, 36.33 degrees, 36.80 degrees and 44.06 degrees, and
error tolerance of + / -0.2 degrees exists; characteristic endothermic peaks exist at 167.5 DEG C and 327 DEG C in a DSC spectrum, and
error tolerance of + / -0.2 DEG C exists. The preparation method comprises the following steps: dissolving
mannitol and escin in deionized water, heating and stirring, and carrying out high-temperature and high-pressure reaction, standing, crystallizing, filtering and
drying to obtain the eutectic
crystal which can be applied to
cosmetics, health-care products, foods and medicines. The eutectic crystal provided by the invention has the advantages of no
irritation, high safety, easy absorption and good stability.