Natural product extract capable of solidifying liquid grease as well as preparation method and application of natural product extract

The invention discloses a natural product extract capable of solidifying liquid grease as well as a preparation method and application of the natural product extract. The used natural products are dry mature seeds, stems, leaves and roots of Vaccaria segetalis (Neck.) Garck which is a caryophyllaceae plant; the preparation method comprises the following key steps: crushing and sieving a natural product, adding an extraction solvent according to a ratio, after extraction is completed, rapidly cooling and centrifuging an extracting solution, and taking and drying a lower sediment, so as to obtain the extract with the function of solidifying the liquid grease. The natural product extract disclosed by the invention is simple in preparation method, green and environment-friendly, and liquid grease mainly containing unsaturated fatty acid and liquid grease mainly containing long-chain alkane can be cured without adding extra auxiliary materials. The curing agent is used for curing liquid edible oil, and has the cha