GC-MS (gas chromatography-mass spectrometry) analyses of alkaloids in the aerial parts and bulbs of Galanthus rizehensis Stern (Amaryllidaceae), collected during two different vegetation periods, was performed. Twenty three alkaloids were identified in four different alkaloid extracts. Acetylcholinesterase (AChE) inhibitory activities of the alkaloid extracts were tested. Both the highest alkal...

Eleven indole alkaloids, comprising four corynanthean, two eburnane, one aspidofractinine, one secoleuconoxine, one andranginine, and two pauciflorine type alkaloids were isolated from the stem-bark and leaf extracts of Kopsia pauciflora. Their structures were determined using NMR and MS analyses. The catharinensine type alkaloid kopsirensine B and the secoleuconoxine alkaloid arboloscine A sho...

Objective(s): Evaluation of the Sophora alopecuroides var. alopecuroides seed effects on morphine withdrawal syndrome in mice and determination of the alkaloid composition of the seed total extract. Materials and Methods:The effects of the seed total extract, alkaloid fraction and major compound matrine on the mice morphine withdrawal syndrome were compared to saline and methadone.Mice were ma...

the purpose of the present study was to determine the tropane alkaloid content of four hyoscyamus species from iran, i.e. h. pusillus l., h. niger l., h. reticulatus l. and h. kurdicus bornm. determination of alkaloids was performed by the hplc method. samples were extracted with chloroform-methanol-25% ammonium hydroxide 15:5:1 (v/v/v). hplc separation was performed on eurospher c18 reversed p...

opium poppy (papaver somniferum l.) has two major products: alkaloids in the capsules and the seeds.  the seed contains oil, protein, carbohydrate, moisture and mineral matters. the seed oil is rich in unsaturated fatty acids, particularly linoleic and oleic acid. remaining meals after oil extraction are the important source for animal diets. the united nations recognize turkey and india as tra...

lesser periwinkle (vinca minor l.), a member of apocynaceae, is not only an ornamental plant with lilac-blue flowers, but also a medical plant producing an important alkaloid, vincamine, found in the leaves which shows a pronounced cerebrovasodilatory and neuroprotective activity. this plant is native to northern spain, western france, central and southern europe, and caucasus. it has been rece...

Background and objectives: Colchicum kurdicum (Bornm.) Stef. is a flowering perennial monocotyledon plant that has many important bioactive compounds especially colchicine and colchicine derivatives. In this study, the ultrasound-assisted acidic-solvent extraction method coupled with response-surface method was presented as the successful method for large scale extract...

objective: one of the major issues in bone tissue engineering is the design and fabrication of bioactive, bioresorbable porous 3d scaffolds capable of maintaining their structure and integrity over a predictable period of time. one such approach is the fabrication of composite scaffolds. methods: in this study we present fabrication and characterization of novel silk/bioglass-composite scaffold...

A total alkaloid and two purified alkaloid extracts of Alangium vitiense were found to be oncostatic for L1210 leukemia; the total alkaloid exerted a noticeable activity, and the purified extracts exerted a borderline activity. These two purified extracts are noticeably oncostatic for two other lymphoid neoplasias in mice, P388 leukemia and Gardner lymphosarcoma. These compounds are not active ...