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| Content Provider | PubMed Central |
|---|---|
| Author | Bharathi, Avula Wang, Yan-hong Smillie, Troy J. Fu, Xiang Li, Xing Cong Mabusela, Wilfred James, Syce Johnson, Quinton Folk, William Khan, Ikhlas A. |
| Copyright Year | 2010 |
| Abstract | This paper describes the first analytical method for the determination of four flavonoids (sutherlandins A–D) and four cycloartanol glycosides (sutherlandiosides A–D) from the aerial parts of Sutherlandia frutescens (L.) R. Br. A separation by HPLC was achieved by using a reversed phase (RP-18) column, PDA with ELS detection, and a water/acetonitrile gradient as the mobile phase. The wavelength used for quantification of four flavonoids with the diode array detector was 260 nm. Owing to their low UV absorption, the cycloartanol glycosides were detected by evaporative light scattering. The method was validated for linearity, repeatability, limits of detection (LOD) and limits of quantification (LOQ). The limits of detection and limits of quantification of eight compounds were found to be in the range from 0.1 to 7.5 µg/mL and 0.5 to 25 µg/mL, respectively. The analysis of products showed considerable variation of 1.099–5.224 mg/average weight for the major compound, sutherlandioside B. The eight compounds in plant sample and products of S. frutescens were further confirmed by LC–ESI-TOF. This method involved the use of the [M+H]+ and [M+Na]+ ions in the positive ion mode with extractive ion monitoring (EIM). |
| Related Links | http://dx.doi.org/10.1016/j.jpba.2010.01.010 |
| Ending Page | 180 |
| Page Count | 8 |
| Starting Page | 173 |
| File Format | |
| ISSN | 07317085 |
| e-ISSN | 1873264X |
| Journal | Journal of pharmaceutical and biomedical analysis |
| Issue Number | 2 |
| Volume Number | 52 |
| Language | English |
| Publisher Date | 2010-06-01 |
| Access Restriction | Open |
| Subject Keyword | Analytical Chemistry Spectroscopy Clinical Biochemistry Drug Discovery Pharmaceutical Science Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Analytical Chemistry Drug Discovery Clinical Biochemistry Pharmaceutical Science |
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