[Extraction technology of Fructus Psoraleae with orthogonal test]

The extraction conditions of Fructus Psoraleae were studied with orthogonal test, taking the contents of psoralen and isopsoralen as indexes and smesh degree, alcohol concentration, alcohol volume, immersion time and immersion times as factors. The results showed the optimal extraction process is pulverizing the herbs into 20 meshes powder, 6 times volume of 55% alcohol immersed three times and two days every time.