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  • content
  • Climatic and soil parameters were characterized and bark samples were analyzed for content of the four major alkaloids using HPLC-UV to explore the utility of evolutionary history (phylogeny) in determining variation within species of these compounds under natural conditions. (frontiersin.org)
  • As a result of selection, the alkaloid content in the bark was raised from 2-2.5 percent to 16 percent. (thefreedictionary.com)
  • morphine
  • The first individual alkaloid, morphine , was isolated in 1804 from the opium poppy ( Papaver somniferum ). (wikipedia.org)
  • The company patented a poppy variety called "Norman" which was stated, in the 1999 Tasmanian Alkaloids Poppy Grower's Bulletin to be the first variety lacking morphine and codeine, while still containing thebaine and oripavine. (wikipedia.org)
  • Alkaloids have a wide range of pharmacological activities including antimalarial (e.g. quinine), antiasthma (e.g. ephedrine), anticancer (e.g. homoharringtonine), cholinomimetic (e.g. galantamine), vasodilatory (e.g. vincamine), antiarrhythmic (e.g. quinidine), analgesic (e.g. morphine), antibacterial (e.g. chelerythrine), and antihyperglycemic activities (e.g. piperine). (wikipedia.org)
  • There are two factories under this organisation - Government Opium and Alkaloid Works, Ghazipur (U.P.) and Government Opium and Alkaloid Works, Neemuch (M.P.). The enterprise's two factories specialize in the production of opium and the extraction of related alkaloids (such as Codeine phosphates, Morphine salts, Dionine, Morphine Hydrochloride, Thebaine, and more). (wikipedia.org)
  • chemistry
  • A significant contribution to the chemistry of alkaloids in the early years of its development was made by the French researchers Pierre Joseph Pelletier and Joseph Bienaimé Caventou , who discovered quinine (1820) and strychnine (1818). (wikipedia.org)
  • The development of the chemistry of alkaloids was accelerated by the emergence of spectroscopic and chromatographic methods in the 20th century, so that by 2008 more than 12,000 alkaloids had been identified. (wikipedia.org)
  • Skimmianine, another common furoquinoline alkaloid also shows a very similar type of chemistry to dictamine. (wikipedia.org)
  • NMR spectral assignments of a new chlorotryptamine alkaloid and its analogues from Acacia confusa Malcolm S. Buchanan, Anthony R. Carroll, David Pass, Ronald J. Quinn Magnetic Resonance in Chemistry Volume 45, Issue 4 , Pages359 - 361. (wikipedia.org)
  • compounds
  • The boundary between alkaloids and other nitrogen-containing natural compounds is not clear-cut. (wikipedia.org)
  • Compounds like amino acid peptides , proteins , nucleotides , nucleic acid , amines , and antibiotics are usually not called alkaloids. (wikipedia.org)
  • Natural compounds containing nitrogen in the exocyclic position ( mescaline , serotonin , dopamine , etc.) are usually classified as amines rather than as alkaloids. (wikipedia.org)
  • Alkaloids are defined as basic compounds derived from amino acids, often with heterocyclically bound nitrogen. (els.net)
  • The Lycopodium alkaloids are of interest due to their biological activity and unique skeletal characteristics, however, many compounds in this class have not been well studied. (wikipedia.org)
  • Containing more than 4100 known different compounds, it is one of the largest classes of alkaloids. (wikipedia.org)
  • possess
  • Many alkaloids possess pronounced biological activities, which are often associated with their amine function. (els.net)
  • Strychnine
  • For example, atropine is isolated from the plant Atropa belladonna , strychnine is obtained from the seed of Strychnine tree ( Strychnos nux-vomica L.). Where several alkaloids are extracted from one plant their names are often distinguished by variations in the suffix: "idine", "anine", "aline", "inine" etc. (wikipedia.org)
  • Ergotamine
  • The relationship between ergot and ergotism was established only in 1717, and the alkaloid ergotamine, one of the main active ingredients of ergot, was isolated in 1918. (wikipedia.org)
  • naturally
  • The harmala alkaloid harmine, once known as telepathine and banisterine, is a naturally occurring beta-carboline alkaloid that is structurally related to harmaline, and also found in the vine Banisteriopsis caapi. (wikipedia.org)
  • 1982
  • Anderson LA, Keene AT and Phillipson JD (1982) Alkaloid production by leaf organ, root organ and cell suspension cultures of Cinchona ledgeriana. (els.net)
  • Peganum
  • Several alkaloids that function as monoamine oxidase inhibitors (MAOIs) are found in the seeds of Peganum harmala (also known as Harmal or Syrian Rue), as well as tobacco leaves including harmine, harmaline, and harmalol, which are members of a group of substances with a similar chemical structure collectively known as harmala alkaloids. (wikipedia.org)
  • The harmala alkaloids occur in Peganum harmala in concentrations of roughly 3%, though tests have documented anywhere from 2-7% or even higher, as natural sources tend to vary widely in chemical makeup. (wikipedia.org)
  • plants
  • Alkaloids are produced by a large variety of organisms including bacteria , fungi , plants , and animals . (wikipedia.org)
  • Alkaloid-containing plants have been used by humans since ancient times for therapeutic and recreational purposes. (wikipedia.org)
  • Alkaloids often have pronounced bioactivities and are therefore thought to play an important role in the interaction of plants with their environment. (els.net)
  • Alkaloid‐producing tissue cultures provide an alternative for exploiting slow growing or protected plants. (els.net)
  • Alkaloids from nonflowering plants. (els.net)
  • Furoquinoline alkaloids extracted from Teclea afzelii (Rutaceae) plants, collected at Elounden, centre province of Cameroon, have antiplasmodial activities. (wikipedia.org)
  • A flavonoid alkaloid also known as a flavoalkaloid is a type of natural product produced by plants that contains both a flavonoid core structure and a nitrogen containing substituent so that the substance is also classified as an alkaloid. (wikipedia.org)
  • Although their assignment to the alkaloid is not universally accepted, they are both found in plants and animals. (wikipedia.org)
  • These alkaloids are of interest for their use in Amazonian shamanism, where they are derived from other plants. (wikipedia.org)
  • Harmala alkaloids are also found in many other plants, such as passion flower. (wikipedia.org)
  • transformations
  • On the basis of spectral characteristics and chemical transformations, a new alkaloid with the composition C 15 H 22 O 2 N 2 isolated from Sophora alopecuroides has been assigned the most probable structure of 13,14-dehydrosophoridine N-oxide. (springer.com)
  • harmine
  • Harmala alkaloids are also found in the Banisteriopsis caapi vine, the key plant ingredient in the sacramental beverage Ayahuasca, in concentrations that range between 0.31-8.43% for harmine, 0.03-0.83% for harmaline and 0.05-2.94% for tetrahydroharmine. (wikipedia.org)
  • amino acid
  • Since the amino acid skeleton is often largely retained in the alkaloid structure, alkaloids originating from the same amino acid show similar structural features and can be classified according to their biosynthetic origin. (els.net)
  • Some alkaloids are derived from the amino acid l ‐tryptophan [ XIII ]. (els.net)
  • The biosynthetic origin of some alkaloids derived from the amino acid l ‐tyrosine [ XII ]. (els.net)
  • tryptophan
  • Labelled (*) tryptophan was employed in feeding experiments to determine the biosynthetic origin of the alkaloids. (els.net)
  • biological
  • A loline alkaloid is a member of the 1-aminopyrrolizidines (often referred to as lolines ), which are bioactive natural products with several distinct biological and chemical features. (wikipedia.org)