alkaloids


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alkaloids

A group of bitter tasting plant poisons, many of which are of medical importance. The alkaloids, which include nicotine, strychnine, morphine, codeine, atropine, caffeine and quinine, have powerful actions on the body. Alkaloids are small, complex, nitrogen-containing molecules often produced by plants as an evolutionary survival characteristic in an environment containing herbivorous animals.

alkaloids

basic organic compounds containing nitrogen that are found in some families of plants (e.g. Papaveraceae). Alkaloids have poisonous and medicinal properties. Examples include nicotine, quinine, morphine and cocaine.

alkaloids,

n alkaline phytochemicals that contain nitrogen in a heterocyclic ring structure. They can have powerful pharmacological effects and are more often used in traditional medicine than in herbal treatments.
References in periodicals archive ?
Asima Chatterjee's work in the field of science opened the doors for millions of women to excel in the field and her research on vinca alkaloids which is now widely used in chemotherapy and helps to slow down the growth rate of cancer cells.
Chen and Fadamiro (2009a) developed a practical method to purify venom alkaloids by washing the whole body extract with a hexane-acetone solvent system containing 1 to 2% triethylamine through a silica gel column (See details in Yu et al.
EFSAs experts identified 17 pyrrolizidine alkaloids in food and feed that should continue to be monitored and recommended further studies on the toxicity and carcinogenicity of those most commonly found in food.
Alkaloids were present in the highest quantity in fruit extract (13.
The low limit also presents analytical challenges, which are amplified by the fact that more than 500 different pyrrolizidine alkaloids exist in plants.
These changes relate specifically to MLs for tropane alkaloids in certain cereal-based foods for infants and young children that are imported into the EU.
Amirkia V, Heinrich M (2014) Alkaloids as drug leads - A predictive structural and biodiversity-based analysis.
The nature of the alkaloids presented in the extract was visualized qualitatively with Dragendorffs reagent.
The determination of total alkaloids is based on the reaction with ninhydrin, a strong oxidative agent that reacts with amino acids and yields a violet-blue product, which has the maximum absorption at 570 nm.
Key words: Ergot alkaloids, culture conditions, Penicillium species.
Previously, only the members of family Clavicipitaceae (Hypocreales) (Genus: Claviceps) were used in the synthesis of ergot alkaloids.