Wilkins, A.L.Miles, Christopher O.De Kock, W.T.Erasmus, G.L.Basson, A.T.Kellerman, T. StephanusVerwoerd, Daniel Wynand2013-08-292013-08-2920121996Wilkins, AL, Miles, CO, De Kock, WT, Erasmus, GL, Basson, AT & Kellerman, TS 1996, 'Photosensitivity in South Africa. IX. Structure elucidation of a beta-glucosidase-treated saponin from Tribulus terrestris and the identification of saponin chemotypes of South African T. terrestris’. Onderstepoort Journal of Veterinary Research, vol. 63, no. 4, pp. 327-334.0330-2465http://hdl.handle.net/2263/22085The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat X Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Saponin C, a β-glucosidase-treated saponin isolated from ethanol-water extracts of a South African collection of Tribulus terrestris, was shown by one- and two-dimensional NMR spectroscopy to be ruscogenin 1-O-α-L- rhamnopyranosyl-(1→2)-β-D-6-O-acetylglucopyranoside.GC-MS analysis of the hydrolysed ethanol-water (4:1) extracts of T. terrestris specimens from two of four sites, revealed high levels of ruscogenin and potentially lithogenic diosgenin saponins. Specimens from two other sites contained non-lithogenic saponins derived predominantly from tigogenin, neotigogenin, gitogenin and neogitogenin.en© ARC-Onderstepoort (original). © University of Pretoria. Dept of Library Services (digital).Veterinary medicineβ-glucosidase-treated saponinGeeldikkopPhotosensitivitySaponin chemotypesStructure elucidationTribulus terrestrisVeterinary medicine -- South AfricaArticle