(1) A phytochemical investigation of an ethanolic extract of the whole plant of Echites hirsuta (Apocynaceae) resulted in the isolation and identification of the flavonoids naringenin, aromadendrin (dihydrokaempferol), and kaempferol; the coumarin fraxetin; the triterpene ursolic acid; and the sterol glycoside sitosteryl glucoside.
(2) The use of a small precolumn instead of an injection loop for the determination of a new phytochemical drug, fellavine, and its metabolites is described.
(3) A phytochemical investigation of the roots of Tiliacora funifera (Menispermaceae) resulted in the isolation and identification of funiferine N-oxide, a new bis(benzylisoquinoline) alkaloid.
(4) The scientific community has begun to appreciate the potential importance of nonnutritive dietary compounds (phytochemicals) in foods such as soybeans.
(5) Preliminary phytochemical investigation of the leaves of Synclisia scabrida indicated the presence of two alkaloids in the water extracts and five alkaloids in the ethanol extracts.
(6) These extracts contained triterpenic saponins, tannins, and flavonoids as estimated through phytochemical screening.
(7) A large phytochemical survey of the flora of the Malaysian Peninsula and Sabah is described, covering the systematic search for alkaloids, and partly, for saponins and flavonoids.
(8) Hydroalcoholic extracts of the tuber were fractionated by precipitation or solvent partition and the various extracts or fractions subjected to phytochemical and pharmacological tests.
(9) A search in ancient Chinese medicinal literature and modern phytochemical references indicates that the therapeutic value of Leonurus artemisia (I-mu ts'ao, the Chinese motherwort) might reside in a uterotonic principle present in leaves.
(10) The success of such a defense depends upon phytochemical mimicry of vertebrate reproductive hormones.
(11) The phytochemical was mutagenic in tester strains TA98 and TA100 and required activation by the hepatic S-9 microsomal enzyme preparation.
(12) A versatile poly-functional pilot plant has been developed to enable the production of herbal preparations as well as extracts and phytochemicals.
(13) Ten plant species, specifically employed by the Indians against these disorders, were subjected to phytochemical screening.
(14) Vegetables and fruits containing other phytochemicals suspected to be cancer inhibitors were also examined.
(15) Phytochemical and pharmacological studies on Taxus sp extracts have resulted in the isolation and the identification of several diterpenoids, and the discovery of the potent antitumor activity of taxol.
(16) Cardenolides were detected in WP by phytochemical screening.
(17) Literature on the phytochemical study of plant estrogens is reviewed.
(18) The preliminary phytochemical investigations have revealed the presence of flavonoids, iridoids, phenolic acids, saponins, amino acids, free sugars, and mucilages in the lyophilized infusion obtained from flowers of Verbascum thapsiforme Schrad.
(19) A phytochemical investigation of the acidic fraction from an ethanolic extract of the roots of Ruscus aculeatus L. (Liliaceae) has resulted in the isolation and identification of a sterol mixture, a fatty acid mixture, chrysophanic acid, a new compound named euparone and an incompletely characterized phenolic substance.
(20) Many bioactive phytochemicals have been shown in recent years to be photosensitizers, i.e.
Phytochemistry
Definition:
(n.) Chemistry in its relation to vegetable bodies; vegetable chemistry.
Example Sentences:
(1) Clinical features, botany, phytochemistry, patch testing and ecology of Compositae and Frullania (liverwort) allergic contact phytodermatitis are discussed.
(2) A protein stimulating RNA polymerase activity that has been isolated and partially characterized previously (Walerych, W., Fabisz-Kijowska, A. et al., 1982, Phytochemistry, 21, 1495-1507) was subjected to investigations on its possible involvement in transcription process.
(3) having activity analogous to the 7-alkylamino-3-methylpyrazolo[4,3-d]pyrimidines (Hecht, S. M., 2068-2610; Skoog, F., Schmitz, R.Y., Hecht, S.M., and Bock, R. M. (1973) Phytochemistry 12, 25-37).
(4) (1977) Phytochemistry 16, 503-504) and are partly degraded at the acceptor terminus (Dziegielewski, T. and Pawełkiewicz, J.
(5) Their level and relative ratios change during germination (Augustyniak & Pawełkiewicz, 1978, Phytochemistry, 17, 15-18).
(6) In earlier studies [G. Hrazdina, G. J. Wagner, and H. W. Siegelman (1978) Phytochemistry 17, 53-56; G. J. Wagner and G. Hrazdina (1984) Plant Physiol.
(7) The aim of this article is to trace some features of the historical development of phytochemistry.
(8) (1984) Phytochemistry 23, 2431-2433) was partially purified with a six-step purification procedure following extraction.
(10) The phytochemistry and psychopharmacology of tobacco are well documented and there can be little doubt that this herb may produce toxic effects, when it is taken in the form of a clyster.
(11) The phytochemistry of the medicinal plants was determined from published research, and the likelihood of successful treatment of diseases was assessed by determining the known pharmacological actions of the plant constituents.
(12) The ethnobotany, ethnopharmacology and phytochemistry of the Thymelaeaceae are reviewed.
(13) Aza derivatives of these decalines (A. Rahier et al., Phytochemistry, in press), which were aimed to mimic the C-8 carbocationic intermediate occurring during later steps of the 2,3-oxidosqualene cyclization did not inhibit the cyclases.
(14) Using available information on the toxicity, phytochemistry, ethnomedical uses and geographic distribution of plants, potentially suitable species are identified for the control of intermediate hosts of schistosomiasis in Ethiopia's lowlands where endod (Phytolacca dodecandra) is not available.
(15) Results from this study suggest that functional phytochemistry based on ethnobotanical experience could lead to development of new and effective drugs from Chinese medicine.
(16) Brief descriptions of the botany, phytochemistry and reputed biological effects are provided.
(17) The article analyses the contributions to phytochemistry by the professors E. Schmidt (1845-1921), H. Thomas (1859-1931), H. Beckurts (1855-1929) and their research schools as well as those of K. Polstorff (1846-1911) and m. Scholtz (1861-1919).