| abstract |
The invention discloses a method for separating and purifying ephedrine, and belongs to the technical field of extraction of plant active ingredients. The invention aims at the problems of low extraction rate, low purity, easy deactivation and the like of cannabixanthin in the existing extraction method, and high-purity ephedrine is obtained by crushing hemp leaves, and then sequentially carrying out enzymolysis with cellulase, low-temperature extraction, filtration, concentration and recovery, extraction, rough filtration, membrane filtration, chromatography, concentration, crystallization, drying and other technological processes for separation and purification. The method has simple process, and the prepared cannabixanthin does not contain tetrahydrocannabinol, thereby being suitable for industrial large-scale production. |