Ensayo

4114

J. Agric. Food Chem. 2006, 54, 4114−4120

Comparative Analyses of Bioactive Mammea Coumarins from Seven Parts of Mammea americana by HPLC-PDA with LC-MS
HUI YANG,† BEI JIANG,‡ KURT A.REYNERTSON,† MARGARET J. BASILE,§ EDWARD J. KENNELLY*,†
AND

Department of Biological Sciences, Lehman College, and The Graduate Center, The City University of New York, 250 Bedford Park BoulevardWest, Bronx, New York 10468; Department of Rehabilitation Medicine, College of Physicians & Surgeons, Columbia University, New York, New York 1003; and Department of Neurology, University of Miami Schoolof Medicine, 1501 N.W. 9th Avenue, Miami, Florida 33136

Mammea americana L. is tropical plant in the Clusiaceae family that bears edible fruit. Mammea coumarins are isoprenylated derivatives of thelactones of the 2-hydroxy-Z-cinnamic acids that are bioactive and have limited distribution in three Clusiaceae genera. Qualitative and quantitative analyses were performed to determine thedistribution of mammea coumarins in the seed nucleus, seed coat, fruit flesh, fruit skin, leaf, stem, and root of M. americana using high-performance liquid chromatography-photodiode array detector (HPLC-PDA)and liquid chromatography-mass spectrometry (LCMS). Ten major mammea coumarins, mammea E/BD (1), mammea E/BC (2), mammea E/BA (3), mammea E/BB (4), mammea B/BA hydroxycyclo F (5), mammea B/BD (6),mammea B/BC (7), mammea B/BA (8), mammea B/BB (9), and mammea B/BA cyclo F (10), were isolated and identified from the seed nucleus of M. americana and employed as standards. The HPLC-PDA method wasvalidated with respect to sensitivity, linearity, recovery, accuracy, and precision. The total content (w/w %) of the 10 major mammea coumarins in M. americana was determined to be highest in the root(0.75%), followed by the leaf (0.64%), seed nucleus (0.48%), fruit skin (0.11%), stem (0.08%), seed coat (0.02%), and fruit flesh (0.99 in the range (0.008-0.5 mg/mL) of calibration of the standards...