The application provides a soluble acid
polysaccharide of
Phaseolus vulgaris, and also provides a preparation method and application of the soluble acid
polysaccharide of
Phaseolus vulgaris. The application also provides application of the soluble acid
polysaccharide of
Phaseolus vulgaris in preparation of a
medicine for protecting the
spleen and liver, having the ability of recovering the colon barrier, regulating intestinal
flora, or a health-care food for enhancing the
immunity of the body. The soluble acid polysaccharide of Phaseolus vulgaris can be extracted by
hot water extraction or
microwave-assisted low eutectic
solvent extraction, especially, the polysaccharide extracted by the
microwave-assisted low eutectic
solvent extraction has better
drug efficacy, is
safer and more controllable, and provides a new selection for clinic.