SUPPLEMENTAL REFERENCES BAUDOUIN G., SKALTSOUNIS A.L., TILLEQUIN F., and KOCH M. 1988. Lugrandoside - a new phenylpropanoid glycoside from various digitalis species. Planta Med. 4:321-323. CARDOSO S.M., GUYOT S., MARNET N., LOPES-DA-SILVA J.A., RENARD C.M.G.C., and COIMBRA M.A. 2005. Characterisation of phenolic extracts from olive pulp and olive pomace by electrospray mass spectrometry. J. Sci. Food Agr. 85:21-32. DE LA TORRE-CARBOT K., JAUREGUI O., GIMENO E., CASTELLOTE A.I., LAMUELA-RAVENTOS R.M., and LOPEZ-SABATER M.C. 2005. Characterization and quantification of phenolic compounds in olive oils by solidphase extraction, HPLC-DAD, and HPLC-MS/MS. J. Agri. Food Chem. 53:43314340. EFRON B., HALLORAN E., and HOLMES S. 1996. Bootstrap confidence levels for phylogenetic trees (vol 93, p. 7085, 1996). Proc. Nat. Acad. Sci. USA. 93:1342913434. EYLES A., JONES W., RIEDL K., HERMS D.A., CIPOLLINI D., SCHWARTZ S., CHAN K., and BONELLO P. 2007. Comparative phloem chemistry of Manchurian (F. mandshurica) and two North American ash species (F. americana and F. pennsylvanica). J. Chem. Ecol. 33:1430-1448. FANG N.B., YU S.G., and PRIOR R.L. 2002. LC/MS/MS characterization of phenolic constituents in dried plums. J. Agri. Food Chem. 50:3579-3585. GODECKE T., KALOGA M., and KOLODZIEJ H. 2005. A phenol glucoside, uncommon coumarins and flavonoids from Pelargonium sidoides. Naturforsch B 60:677-682. GUO H., LIU A.H., YE M., YANG M., and GUO D.A. 2007. Characterization of phenolic compounds in the fruits of Forsythia suspensa by high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry. Rapid Commun. Mass Sp. 21:715-729. HOSNY M. 1998. Secoiridoid glucosides from Fraxinus oxycarpa. Phytochemistry 47:1569-1576. IOSSIFOVA T., VOGLER B., and KOSTOVA I. 2002. Escuside, a new coumarinsecoiridoid from Fraxinus ornus bark. Fitoterapia 73:386-389. JIMENEZ P., MASSON L., BARRIGA A., CHAVEZ J., and ROBERT P. 2010. Oxidative stability of oils containing olive leaf extracts obtained by pressure, supercritical and solvent-extraction. Eur. J. Lipid Sci. Tech. 113:497-505. JOHNSON R., and WICHERN D.A. 2002. Applied Multivariate Statistical Analysis, 5th ed. Upper Saddle River, NJ: Prentice-Hall. KAMMERER B., KAHLICH R., BIEGERT C., GLEITER C.H., and HEIDE L. 2005. HPLC-MS/MS analysis of willow bark extracts contained in pharmaceutical preparations. Phytochem. Analysis 16:470-478. KOSTOVA I., and IOSSIFOVA T. 2007. Chemical components of Fraxinus species. Fitoterapia 78(2):85-106. LIN L.Z., and HARNLY J.N. 2008. Phenolic compounds and chromatographic profiles of pear skins (Pyrus spp.). J. Agri. Food Chem. 56:9094-9101. PAREJO I., JAUREGUI O., SANCHEZ-RABANEDA F., VILADOMAT F., BASTIDA J., and CODINA C. 2004. Separation and characterization of phenolic compounds in fennel (Foeniculum vulgare) using liquid chromatography-negative electrospray ionization tandem mass spectrometry. J. Agri. Food Chem. 52:36793687. R DEVELOPMENT CORE TEAM. 2011. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing: Vienna, Austria. RYAN D., ROBARDS K., and LAVEE S. 1999. Determination of phenolic compounds in olives by reversed-phase chromatography and mass spectrometry. J. Chromatogr. A 832:87-96. RYAN D., ANTOLOVICH M., HERLT T., PRENZLER P.D., LAVEE S., and ROBARDS K. 2002. Identification of phenolic compounds in tissues of the novel olive cultivar Hardy's mammoth. J. Agri. Food Chem. 50:6716-6724. SAVARESE M., DE MARCO E., and SACCHI R. 2007. Characterization of phenolic extracts from olives (Olea europaea cv. Pisciottana) by electrospray ionization mass spectrometry. Food Chem. 105:761-770. SUZUKI R., and SHIMODAIRA H. 2006. Pvclust: an R package for assessing the uncertainty in hierarchical clustering. Bioinformatics 22:1540-1542. TAKENAKA Y., TANAHASHI T., SHINTAKU M., SAKAI T., NAGAKURA N., and PARIDA. 2000. Secoiridoid glucosides from Fraxinus americana. Phytochemistry 55:275-284. TERAZAWA M., and SASAYA T. 1970. Studies on the extractives of Yachidamo, Fraxinus mandshurica Ruprecht var. japonica Maxim. II. Glucosides in bark. J. Jpn. Wood Res. Soc. 16:192-9. VALLVERDU-QUERALT A., JAUREGUI O., MEDINA-REMON A., ANDRESLACUEVA C., and LAMUELA-RAVENTOS R.M. 2010. Improved characterization of tomato polyphenols using liquid chromatography/electrospray ionization linear ion trap quadrupole orbitrap mass spectrometry and liquid chromatography/electrospray ionization tandem mass spectrometry. Rapid Commun. Mass Sp. 24:2986-2992. YANG W., YE M., LIU M., KONG D.Z., SHI R., SHI X.W., ZHANG K.R., WANG Q.A., and LANTONG Z. 2010. A practical strategy for the characterization of coumarins in Radix glehniae by liquid chromatography coupled with triple quadrupole-linear ion trap mass spectrometry. J. Chromatogr. A 1217:4587-4600. YASUDA T., FUKUI M., NAKAZAWA T., HOSHIKAWA A., and OHSAWA K. 2006. Metabolic fate of fraxin administered orally to rats. J. Nat. Prod. 69:755-757. YE M., YAN Y.N., and GUO D.A. 2005. Characterization of phenolic compounds in the Chinese herbal drug Tu-Si-Zi by liquid chromatography coupled to electrospray ionization mass spectrometry. Rapid Commun. Mass Sp. 19:1469-1484.