Research on the Distribution of Magnolol and Honokiol in Different Parts of Magnolia Officinalis Rehd.et Wils. from Chongqing

OBJECTIVE To study the distribution pattern of magnolol and honokiol in different parts of Magnolia officinalis Rehd. et Wils. from Chongqing, so as to provide a scientific basis for further development and utilization of its resources and quality control. METHODS The content of magnolol and honokiol in the different parts of Magnolia officinalis Rehd.et Wils. was determined by HPLC. RESULTS The total content of magnolol and honokiol in root bark, trunk bark, branch bark and leaf of Magnolia officinalis Rehd. et Wils. was different as 8.22%, 2.30%, 2.07% and 0.43%. The content of magnolol and honokiol in the different parts of Magnolia officinalis Rehd.et Wils. showed distinct variability. CONCLUSION The content of magnolol and honokiol in the different parts of Magnolia officinalis Rehd.et Wils. was different significantly. The quality control of magnolia bark should be lucubrated, and the clinical medication of the different parts should be distinguished. The leaf resources of Magnolia officinalis Rehd.et Wils. possess exploitation potentials.