Assay or Magnolol and Honokiol in Officinal Magnolia (Magnolia officinalis) and Its Processed Products / 中草药

ABSTRACT

Contents of magnolol and honokiol in Magnolia officinalis Rehd. et Wils. and its processed products,yellow-fried, burn -fried and ginger-fried M. officinalis Rehd. et Wils. as well as commercially available M.officinalis Rehd. et Wils. and its processed products were assayed by TLC Scanning. Results showed that contents of the two constituents decreased after M. officinalis Rehd. et Wils. was processed. Among them the burn-fried product showed a most pronounce decrease of 30%, while both yellow-fried and ginger-fried products decreased about 20%. The contents of magnolol and honokiol in commercial M. officinalis Rehd. et Wils. and its ginger-fried product available in other provinces and cities differed greatly with some almost contain no magnolol and honokiol.