The invention relates to the field of biological extraction, substance analysis, application and effect evaluation, in particular to an extraction method of
polysaccharide of an overground part of chicory, the
polysaccharide and a related application and evaluation method. The method comprises the following steps: providing an extraction method of the
polysaccharide of the overground part of the chicory, carrying out
reflux extraction, concentration,
precipitation,
centrifugation, washing and freeze-
drying to obtain the polysaccharide, and carrying out molecular
weight distribution and
monosaccharide composition analysis on the polysaccharide, and the polysaccharide has
antioxidant and anti-inflammatory activity, can be used for preparing products for protecting myocardial cells and the like, and has wide application prospects. The invention also discloses a composition containing the polysaccharide and an evaluation method for comparing the myocardial protection activity of the polysaccharide at different parts of the
cichorium intybus. The application achieves the technical effects of efficiently extracting the polysaccharide of the overground part of the chicory, determining the characteristics and effects of the polysaccharide, providing a basis for development of products related to cardiovascular
disease prevention and treatment, and providing a method for evaluating the myocardial protection activity of the polysaccharide of different parts of the chicory.