To facilitate effective resource utilization, we have investigated triterpene saponins such as saikosaponin from the aerial parts of Bupleurum (B.) falcatum L., which are commonly discarded. Seven oleanene saponins were isolated from this plant; they were classified as the 13,28-epoxy type, 12-ene type, 9(11),12-diene type, and 28-acid type on the basis of their structural characteristics. For ...

Saponins from the seeds of C sinensis var. sinensis (tea seed saponins) have been well investigated. Their sapogenins, theasapogenols A, B, C, D, and E, were isolated and identified by Yosioka et al.i-3) Two major tea seed saponins, theasaponins Ei and E2, have also been recently determined,4) Saponins from the leaves of C sinensis var. sinensis (tea leaf saponins) were first studied by Machida...

The antiprotozoal effect of saponins is transitory, as when saponins are deglycosylated to sapogenins by rumen microorganisms they become inactive. We hypothesised that the combination of saponins with glycosidase-inhibiting iminosugars might potentially increase the effectiveness of saponins over time by preventing their deglycosylation in the rumen. Alternatively, modifying the structure of t...

Enhanced production of total saponins was obtained from 40 day old suspension cultures of Bacopa monnieri. The callus yielded not only a 166% increased concentration of saponins but also produced two novel prominent bands of saponins compared to the natural plant system. We report here for the first time an increased potential of cell lines of B. monnieri in suspension for production of saponin...

The defatted seed meal of Camellia oleifera has been used as a natural detergent and its extract is commercially utilized as a foam-stabilizing and emulsifying agent. The goal of this study was to investigate the foam properties and detergent ability of the saponins from the defatted seed meal of C. oleifera. The crude saponin content in the defatted seed meal of C. oleifera was 8.34 and the to...

Recently the number of studies investigating triterpenoid saponins has drastically increased due to their diverse and potentially attractive biological activities. Currently the literature contains chemical structures of few hundreds of triterpenoid saponins of plant and animal origin. Triterpenoid saponins consist of a triterpene aglycone with one or more sugar moieties attached to it. However...

Saponins are detergent-like substances showing antibacterial as well as anticancer potential. In this study, the effects of saponins from Quillaja saponaria were analyzed against prokaryotic and eukaryotic cells. Multidrug-resistant clinical E. coli strains were isolated from human urine. As eukaryotic cells, the CHO-K1 cell lines were applied. Antibacterial effect of ampicillin, streptomycin, ...

A novel C-28 tetraglycoside of quillaic acid (1) has been isolated from G ypsophila capil­ laris. The structure was elucidated by 1 D NM R (N O E difference, DEPT, selective 13C{1H} INEPT), 2D NMR ^ H /H and !H ,13C COSY, ‘H /H /H RELAY, ROESY and TOCSY) and other spectroscopic and chromatographic evidences. Conformational dynamics within the tetrasaccharide part were estimated from NOE respons...

Acaciaside A and B, two acylated triterpenoid bisglycosides isolated from the funicles of Acacia auriculiformis, are known to have antihelmintic activity. Since the saponins contain a conjugated unsaturated system that is highly susceptible to peroxidation, we investigated the interaction of saponins and membrane using rat liver microsomes as our model. Microsomal membranes were incubated with ...