Pharmacognostical Studies on the Magnolia Bark-3-Determination of Magnolol and Honokiol in"Hou po"(Cortex Magnoliae)Prepared from the Bark of Different Age [in Japanese]
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Magnolol (I) and honokiol (II) are the active components in Hou po (Cortex Magnoliae). To determin the amounts of I and II, the barks of different age were collected from a single tree of Magnolia officinalis and analyzed for their contents by TLC. The 20-30 year old barks contain relatively large amounts of I and II, which suggests that 20-30 year old barks are the most suitable to collect for the preparation of Hou po.
- The Japanese journal of pharmacognosy
The Japanese journal of pharmacognosy 45(2), p145-147, 1991-06