Research Article
Analysis of Rutin from Lespedeza virgata (Thunb.) DC. by Microwave-Assisted Extraction and Capillary Electrophoresis
Table 1
Orthogonal experimental L9 (34) and analytical result.
| | Factor | Concentration of ethanol solution/% (A) | Ratio of solvent volume to solid/mL·g−1 (B) | Extraction temperature/°C (C) | Microwave extraction time/min (D) | Extraction yield/mg·g−1 |
| | 1 | 70 (1) | 70 : 1 (1) | 70 (1) | 10 (1) | 0.244 | | 2 | 70 (1) | 80 : 1 (2) | 75 (2) | 15 (2) | 0.268 | | 3 | 70 (1) | 90 : 1 (3) | 80 (3) | 20 (3) | 0.254 | | 4 | 75 (2) | 70 : 1 (1) | 75 (2) | 20 (3) | 0.265 | | 5 | 75 (2) | 80 : 1 (2) | 80 (3) | 10 (1) | 0.256 | | 6 | 75 (2) | 90 : 1 (3) | 70 (1) | 15 (2) | 0.270 | | 7 | 80 (3) | 70 : 1 (1) | 80 (3) | 15 (2) | 0.248 | | 8 | 80 (3) | 80 : 1 (2) | 70 (1) | 20 (3) | 0.252 | | 9 | 80 (3) | 90 : 1 (3) | 75 (2) | 10 (1) | 0.258 | | 0.255 | 0.252 | 0.255 | 0.253 | — | | 0.264 | 0.259 | 0.264 | 0.262 | — | | 0.253 | 0.261 | 0.253 | 0.257 | — | | 0.011 | 0.009 | 0.011 | 0.009 | — |
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. are the average extracted amount of rutin at the different level of the various factors. is range (average extraction of the maximum minus minimum).
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