Bletilla striata polysaccharide extracting solution as well as preparation and application thereof

The invention provides a rhizoma bletillae polysaccharide extracting solution as well as preparation and application thereof. The rhizoma bletillae polysaccharide extracting solution is obtained by sequentially carrying out enzymolysis on crushed rhizoma bletillae roots by virtue of a specific compound enzyme, homogenizing at the speed of 6000-12000 r/min and separating. The properties of the rhizoma bletillae roots are specifically explored, an extraction process of firstly performing enzymolysis and then performing homogenization is specifically designed, and a compound enzyme with specific components and homogenization operation at a specific rotating speed are combined, so that compared with rhizoma bletillae polysaccharide obtained through treatment of other enzymes and other processes, the extraction rate is remarkably increased, and the extraction efficiency is greatly improved. The molecular weight of more rhizoma bletillae polysaccharide exceeds 100,000 Da (the water locking and moisturizing performa