Application of Chinese clematis root in separation and preparation of 5-hydroxymethylfurfural

The invention discloses an application of Chinese clematis root in separation and preparation of 5-hydroxymethylfurfural (5-HMF). The application comprises the following steps: extracting Chinese clematis root by using an acidic solution, performing concentration, performing centrifugation, and performing lyophilization to obtain a crude extract; adding a methanol solution into the crude extract for dissolving, performing centrifugation, taking a supernatant, performing concentration, and adding water for dissolving to obtain a crude extraction liquid containing the 5-hydroxymethylfurfural; performing adsorption on the crude extraction liquid by adopting macroporous resin, performing elution, performing detection by adopting high-performance liquid chromatography, merging eluents, and performing concentration to obtain an enriched substance; and performing preparation by using the enriched substance through semi-preparative high-performance liquid chromatography, collecting a fractioncontaining the 5-hydroxym