Comparative Study on Process of Ziziphi Spinosae Semen by Vacuum Extraction and Conventional Extraction

OBJECTIVE To study the extraction efficiency of Ziziphi Spinosae Semen by vacuum extraction and conventional extraction. METHODS Taking jujuboside A and dry extraction as measure indexs, the L9(3⁴) orthogonal experiment was used to study the process of Ziziphi Spinosae Semen by vacuum extraction and conventional extraction. RESULTS The extraction efficiency by vacuum extraction was more better than that by conventional extraction. The optimum vacuum extraction conditions were: vacuum degree 0.08 MPa, temperature 50 ℃. The content of jujuboside A by vacuum extraction was increased about 15.3% than that by conventional extraction. The dry extraction yield by vacuum extraction was reduced about 24.8% than that by conventional extraction. CONCLUSION The process of Ziziphi Spinosae Semen by vacuum extraction is effective and stable. It’s better than the process by conventional extraction and can be used for industrial production.