Titlebook: Saponins in Food, Feedstuffs and Medicinal Plants; Wieslaw Oleszek,Andrew Marston Book 2000 Springer Science+Business Media Dordrecht 2000

Endemic

,LC-MS and LC-MS/MS Analysis of Saponins and Sapogenins — Comparison of Ionization Techniques and Thtification of saponins and sapogenins by utilizing combinations of NMR, MS and GC-MS require extensive purification and in the case of GC-MS, saponins must be converted to their corresponding sapogenins and volatile derivatives prepared. Both the extensive purification and the derivatization steps a

ABYSS

Single Run HPLC Separation of Escins Ia and IIa by Means of a Waters Symmetry Shield C8 Column,s mixture of saponins has been reported to show antiinflammatory activity [1–3] and recently structure-requirements of escins for this activity were obtained by Matsuda . [4] by investigating the effects of the pure saponins on acute inflammation in experimental animal models.

白杨鱼

Polyhydroxylated Steroidal Saponins from ,,almost ubiquitous in starfish, while they have been found only rarely in other marine animals. On the basis of their chemical structures, the starfish saponins may be subdivided into three main groups: the sulphated “asterosaponins”, usually penta- and hexaoligosides, based on .,3β,6α-dihydroxystero

Panther

Production of a Diverse Library of Plant Natural Products for Bioassays,rary is not new, but the complexity of plant chemistry has made the purification and isolation process time consuming, and largely not cost effective. However, advancements in chromatographic and spectroscopic techniques now make it possible to obtain a chemical fmgerprint of plants, identify the ch

密码

Structure Determination of Saponins with Cardiotonic Activity by Circular Dichroism,ting Na.,K.-ATPase (the sodium pump) in mammalian and insect cells and as such have long been used for the treatment of certain cardiac disorders. The chemical structures of cardenolides are characterized by 3-β-OH (or 3β-O-sugar), C/D—.-ring juncture, 14β-OH, and 17β-unsaturated lactone ring (Figur

locus-ceruleus

尊敬

极小

Chemistry and Bioactivity of Saponins from Some Sri Lankan Plants,0 are claimed to have uses in the indigenous system of medicine [2]. In a continuation of our studies towards the discovery of biologically active saponins from Sri Lankan plants, we have chemically investigated . and . (Menispermaceae), . and . (Sapindaceae), . (Combretaceae) and . (Rubiaceae). Che

insolence

dowagers-hump

Chemo-Ecological Role of Spirostanol Saponins in the Interaction between Plants and Insects, structural and quantitative variability. These constituents, characterised most often as secondary metabolites, possess a wide range of biological activities and functions. Insects utilise frequently such compounds to their benefit, i.e. as kairomones. However, plants defend themselves, in an ecolo