Alkaloid: a member of a large group of chemicals that are made by plants and have nitrogen in them. kavakava root. many alkaloids possess potent pharmacologic effects. the alkaloids include cocaine, nicotine, strychnine, caffeine, morphine, pilocarpine, atropine, methamphetamine, mescaline, ephedrine, and tryptamine. alkaloids is a term used collectively to describe a large and diverse group of chemicals that what is alkaloids have alkali- like properties and at least one nitrogen atom in a heterocyclic ring structure. coupon for active forever. alkaloid herbal medicine any of a number of what medicinally active compounds produced by plants; alkaloids are often active in small amounts and toxic in large amounts; well- known alkaloids produced by plants include caffeine, codeine, morphine, nicotine, quinine and strychnine. al· ka· loid ( al' kă- loyd). alkaloid definition is - any of numerous usually colorless, complex, and bitter organic bases ( such as morphine or caffeine) containing nitrogen and usually oxygen that occur especially in seed plants and are typically physiologically active. alkaloids are what made by all living things, but many alkaloids are isolated from plants.
most plants only produce a few types of alkaloids and the function of them in plants is not clear. the article that introduced the concept of " alkaloid". the name " alkaloids" ( german: alkaloide) was introduced in 1819 by the german chemist carl friedrich wilhelm meißner, and is derived from late latin root alkali ( which, in what turn, comes from the arabic al- qalwī meaning ' ashes of plants' ) and the suffix - οειδής- ( ' like' ). alkaloid history. alkaloids are basic ( rather than acidic) and are just tiny little single molecules. alkaloids exist in pretty much everything, and even though no one is exactly sure what role alkaloids play in the plant itself ( maybe seed production? ), plant alkaloids have been singled out and used in what medicine for hundreds of years. alkaloid definition, 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 are usually water- insoluble and alcohol- soluble, that combine with acids without the loss of a water molecule to form water- soluble hydrochlorides, hydrobromides, or the like. an alkaloid is a type of plant- derived organic compound.
the alkaloid tubocurarine is the active ingredient in the south american arrow poison, curare ( obtained from chondrodendron tomentosum), and is used as a muscle relaxant in surgery. two alkaloids, vincristine and vinblastine ( from vinca rosea), are widely used as chemotherapeutic agents in the treatment of many types of cancer.