Preparation technology of effective fraction of Catharsius molossus based on determination of effective composition and characterization of physico-chemical property Graded ethanol precipitation method on physicochemical properties and antioxidant activities of polysaccharides extracted from Astragalus Radix Comparison of Coptidis Rhizoma processed with different ginger juice based on metabolomics Effects of biological soil crust on soil physicochemical properties in water-wind erosion crisscross region, northern Shaanxi Province, China Effect of secondary fermentation on processing technology for fermented soybeans Expression of sour-taste properties of Chinese materia medica and their applications in clinical compatibility