Method for extracting and separating ceramide in konjac flying powder

The invention belongs to the field of processes for extracting plant effective components and discloses a method for extracting and separating ceramide in konjac flying powder. According to the invention, an ultrasonic technology is utilized to carry out primary processing, so as to separate the ceramide from raw material cells in short time, extraction time is short, damage to effective ingredients, which is caused by high temperature heating, is avoided, and an extraction rate is improved for extraction and separation in the next step; then the characteristic of selective dissolving capacity of carbon dioxide in a super-critical state is utilized to carry out secondary extraction, refining and separation on different polar materials. The method has the advantages of low operating temperature, good selectivity, no damage to effective ingredient structures, capability of perfectly storing active ingredients of natural plants and the like, and enables the ceramide in the konjac flying powder to be efficiently extracted and separated out; compared with the prior art, content of the ceramide is higher and the konjac flying powder is more pure.