plant alkaloid

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• alkaloid — /al keuh loyd /, Biochem., Chem., Pharm. n. 1. any of a large class of organic, nitrogen containing ring compounds of vegetable origin and sometimes synthesized, some of which are liquid but most of which are solid, that have a bitter taste, that …   Universalium

• Plant defense against herbivory — Poison ivy produces urushiol to protect the plant from herbivores. In humans this chemical produces an allergic skin rash, known as urushiol induced contact dermatitis …   Wikipedia

• Alkaloid — This article is about the chemical compounds alkaloids. For the pharmaceutical company in the Republic of Macedonia see Alkaloid (company).Alkaloids are naturally occurring chemical compounds containing basic nitrogen atoms.… …   Wikipedia

• alkaloid — Originally, any one of hundreds of plant and fungal products distinguished by alkaline (basic) reactions, but now restricted to heterocyclic nitrogen containing and often complex structures possessing pharmacologic activity; their trivial name s… …   Medical dictionary

• alkaloid — [ alkəlɔɪd] noun Chemistry any of a class of nitrogenous organic compounds of plant origin which have pronounced physiological actions on humans …   English new terms dictionary

• alkaloid —    One of a varied family of alkaline, nitrogen containing substances, usually plant derived, reacting with acids to form salts. Normally intensely bitter, alkaloids form a body of substances widely used in drug and herbal therapy. They are… …   Herbal-medical glossary

• alkaloid — n. any of a series of nitrogenous organic compounds of plant origin, many of which are used as drugs, e.g. morphine, quinine. Etymology: G (as ALKALI) …   Useful english dictionary

• Harmala alkaloid — Peganum harmala, commonly known as Syrian Rue Several alkaloids that function as monoamine oxidase inhibitors (MAOIs) are found in the seeds of Peganum harmala (also known as Harmal or Syrian Rue), including harmine, harmaline, and harmalol,… …   Wikipedia

• Carnivorous plant — Insectivorous Plants redirects here. For the book by Charles Darwin, see Insectivorous Plants (book). Nepenthes mirabilis in flower, growing on a road cut in Palau Carnivorous plants are plants that derive some or most of their nutrients (but not …   Wikipedia

• Tropane alkaloid — Tropane alkaloids, also known as Belladonna alkaloids are a class of alkaloids and secondary metabolites that contain a tropane ring in their chemical structure. Tropane alkaloids occur naturally in many members of the plant family… …   Wikipedia

• pyrrolizidine alkaloid —    A type of alkaloid found in many plants of the Composite and Borage families, once termed a Senecio alkaloid.    Some of the pyrrolizidine group have been shown to cause several types of liver degeneration and blood vessel disorders. Several… …   Herbal-medical glossary