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Diarylheptanoids: A group of compounds consisting of two aromatic rings separated by seven carbons (HEPTANES) and having various substituents. The best known member is CURCUMIN.Alpinia: A plant genus of the family ZINGIBERACEAE. Members contain galangin, yakuchinone-A, and diarylheptanoids.Alnus: A plant genus of the family BETULACEAE that is distinguished from birch (BETULA) by its usually stalked winter buds and by cones that remain on the branches after the small, winged nutlets are released.Myricaceae: A plant family of the order Myricales, subclass Hamamelidae, class Magnoliopsida. They are trees and shrubs having aromatic leaves that often have yellow glandular dots on the surface. Single-seeded fruits are often covered with waxy granules, bumps, or layers. The flowers are small, greenish, and inconspicuous.Plant Bark: The outer layer of the woody parts of plants.Amomum: A plant genus of the family ZINGIBERACEAE. Members contain aculeatin D, beta-sitosterol, and STIGMASTEROL. Some members have been reclassified to ELETTARIA and other ZINGIBERACEAE.Acer: A plant genus of the family ACERACEAE, best known for trees with palmately lobed leaves.Curcuma: A plant genus of the family ZINGIBERACEAE that contains CURCUMIN and curcuminoids.Spectrometry, Mass, Fast Atom Bombardment: A mass spectrometric technique that is used for the analysis of a wide range of biomolecules, such as glycoalkaloids, glycoproteins, polysaccharides, and peptides. Positive and negative fast atom bombardment spectra are recorded on a mass spectrometer fitted with an atom gun with xenon as the customary beam. The mass spectra obtained contain molecular weight recognition as well as sequence information.Plant Extracts: Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.