Berberine is a quaternary ammonium salt from the protoberberine group of isoquinoline alkaloids. It is found in such plants as Berberis [e.g. Berberis aquifolium (Oregon grape), Berberis vulgaris (barberry), Berberis aristata (tree turmeric)], Hydrastis canadensis (goldenseal), Xanthorhiza simplicissima (yellowroot), Phellodendron amurense (Amur c...
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http://en.wikipedia.org/wiki/Berberine
• (n.) An alkaloid obtained, as a bitter, yellow substance, from the root of the barberry, gold thread, and other plants.
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http://thinkexist.com/dictionary/meaning/berberine/
<chemical> A toxic organic substance with the chemical formula C20H19NO5 which is found in the roots of certain plants such as barberry and golden seal. It kills amoebas (is an amebicide) and is used to treat cholera. ... It cannot be dissolved in water, but is soluble in alcohol and ether. It has a melting point of 145 degrees Celsius when d...
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http://www.encyclo.co.uk/local/20973
Ber'ber·ine noun (Chemistry) An alkaloid obtained, as a bitter, yellow substance, from the root of the barberry, gold thread, and other plants.
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http://www.encyclo.co.uk/webster/B/39
Type: Term Pronunciation: ber′ber-ēn Definitions: 1. An alkaloid from Hydrastis canadensis (family Berberidaceae); has been used as an antimalarial, antipyretic, and carminative, and externally for indolent ulcers.
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http://www.medilexicon.com/medicaldictionary.php?t=9994
Berberine is a yellow crystalline bitter alkaloid occurring in the barberry plant.
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http://www.probertencyclopaedia.com/browse/GB.HTM
a white or yellow, crystalline, water-soluble alkaloid, CHNO, derived from barberry or goldenseal, used as an antipyrotic, antibacterial, and stomachic.
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https://www.infoplease.com/dictionary/berberine
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