Cotton rose leaf polysaccharide crude extract, cotton rose leaf polysaccharide as well as preparation method and application of cotton rose leaf polysaccharide

The invention belongs to the field of plant extraction and medical and medical beauty application, and particularly relates to a cottonrose hibiscus leaf polysaccharide crude extract, cottonrose hibiscus leaf polysaccharide and a preparation method and application of the cottonrose hibiscus leaf polysaccharide crude extract and the cottonrose hibiscus leaf polysaccharide. The cottonrose hibiscus polysaccharide component is extracted and purified by adopting a solvent extraction method, the content and purity of the polysaccharide can be ensured at the same time, and the preparation method is high in efficiency, simple to operate and easy for large-scale production. Meanwhile, the inventor also finds out the moisturizing effect of the cottonrose hibiscus polysaccharide crude extract and the cottonrose hibiscus polysaccharide, especially the cottonrose hibiscus leaf polysaccharide has better moisturizing performance as that of hyaluronic acid, and a brand new product with moisturizing performance is provided fo