Research on standard of Magnoliae Officinalis Cortex commercial specification and grade Preliminary study on pharmacodynamic evaluation method of Houpo formula particles Transport research on water extract from Magnoliae Officinalis Cortex across Caco-2 monolayer model Technology of ultrasound-enhanced supercritical extraction for magnolol and honokiol Technology of ultrasound-enhanced supercritical extraction for magnolol and honokiol Quality control of Xiaochengqi Decoction Chemical constituents of Huoxiang Zhengqi Liquid Chemical constituents of Huoxiang Zhengqi Liquid Analysis on chemical constituents of volatile oil in Magnolia officinalis var. biloba produced in Jinggangshan Quality control of Xiaochengqi Decoction