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Dr. Duke's Phytochemical and Ethnobotanical Databases is an online database developed by James A. Duke at the USDA. The databases report species, phytochemicals, and biological activity, as well as ethnobotanical uses. [1] The current Phytochemical and Ethnobotanical databases facilitate plant, chemical, bioactivity, and ethnobotany searches.
Phytochemistry is the study of phytochemicals, which are chemicals derived from plants.Phytochemists strive to describe the structures of the large number of secondary metabolites found in plants, the functions of these compounds in human and plant biology, and the biosynthesis of these compounds.
Phytochemicals are chemicals of plant origin. [1] Phytochemicals (from Greek phyto, meaning "plant") are chemicals produced by plants through primary or secondary metabolism. [2] [3] They generally have biological activity in the plant host and play a role in plant growth or defense against competitors, pathogens, or predators. [2]
Handbook of Phytochemical Constituents of GRAS Herbs and Other Economic Plants (and Database) Boca Raton, Florida: CRC Press, Inc; Duke, J. A. 1992. Handbook of Biologically Active Phytochemicals and Their Activities (and Database). Boca Raton, Florida: CRC Press, Inc, ISBN 0-8493-3670-8; Duke, J. A. & J. L. duCellier 1993.
Betulinic acid Ber tree, white birch, winged beans, tropical carnivorous plants Triphyophyllum peltatum, Ancistrocladus heyneanus, Diospyros leucomelas a member of the persimmon family, Tetracera boiviniana, the jambul (Syzygium formosanum), chaga (Inonotus obliquus), and many other Syzygium species. Moronic acid Rhus javanica (a sumac), mistletoe
They are organic chemicals and have a foamy quality when agitated in water and a high molecular weight. They are present in a wide range of plant species throughout the bark , leaves , stems, roots and flowers but particularly in soapwort (genus Saponaria ), a flowering plant, the soapbark tree ( Quillaja saponaria ), common corn-cockle ...
Representative chemical structure of one of many plant-derived polyphenols that comprise tannic acid. Such compounds are formed by esterification of phenylpropanoid-derived gallic acid to a monosaccharide (glucose) core. Polyphenols (/ ˌ p ɒ l i ˈ f iː n oʊ l,-n ɒ l /) are a large family of naturally occurring phenols. [1]
Modern knowledge of medicinal plants is being systematised in the Medicinal Plant Transcriptomics Database, which by 2011 provided a sequence reference for the transcriptome of some thirty species. [61] Major classes of plant phytochemicals are described below, with examples of plants that contain them. [8] [54] [62] [63] [64]