Research Article
Simultaneous Determination of Content and Antioxidant Activity of Five Components in Hibiscus mutabilis L by HPLC-QAMS
Table 8
Relative retention values of various constituents.
| Instrument | Chromatographic column | Relative retention values | Protocatechuic acid | Catechin | Rutin | Luteolin |
| Agilent 1260 | Agilent ZORBAX SB-C18 | 2.9839 | 1.9830 | 1.1995 | 0.9527 | Agilent TC-C18 | 2.9846 | 1.9964 | 1.2021 | 0.9608 | Phenomenex C18 | 2.9735 | 1.9803 | 1.1992 | 0.9588 |
| Shimadzu LC-2010 | Agilent ZORBAX SB-C18 | 2.9817 | 1.9932 | 1.2037 | 0.9521 | Agilent TC-C18 | 2.9742 | 1.9837 | 1.1926 | 0.9594 | Phenomenex C18 | 2.9801 | 1.9929 | 1.2134 | 0.9625 |
| Average | 2.9797 | 1.9883 | 1.2018 | 0.9577 | RSD/% | 0.16 | 0.34 | 0.57 | 0.45 |
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