Abstract A study of Chinese herbal medicine from the common Pd-Ia, the use of ultrasound-assisted means to get a prime aqueous Pd-Ia optimum. Through investigation, the ultrasonic-assisted extraction of Pd-Ia Extraction temperature, ultrasonic power, extraction time and extraction solvent volume on the Pd-Ia content of a pigment; and in this series based on single-factor test by orthogonal test method of ultrasound assisted Pd-Ia optimize the water extraction process, a hormone derived its Pd-Ia best in ultrasound-assisted extraction conditions were: ultrasonic temperature is 50 ℃, ultrasonic power 176W, extraction time of 40min, solid to liquid ratio of 1:20. Validation experiments, shows that the selection process is feasible.
Key words Pd; Pd-Ia; ultrasound; orthogonal test