Table 1.
Prenylquinones identified from UHPLC-APCI-QTOFMS data acquired in negative and positive ionization modes.
| No | RT (min) | APCI - | m/z (-) | APCI + | m/z (+) | formula | MS/MS (-) | Identification |
|---|---|---|---|---|---|---|---|---|
| 1 | 0.76 | (M)- | 446.3763 | -a | -a | C29H50O3 | 177.0919, 163.0764 | α-tocopherol-quinone |
| 2 | 0.92 | (M-H)- | 415.3575 | -a | -a | C28H48O2 | 149.0605, 121.0655 | γ-tocopherol |
| 3 | 1.00 | (M-H)- | 429.3734 | (M+H)+ | 431.3877 | C29H50O2 | 163.0760, 135.0812 | α-tocopherol |
| 4 | 1.28 | (M)- | 450.3504 | (M+H)+ | 451.3572 | C31H46O2 | 210.0680, 185.0607 | phylloquinone |
| 5 | 1.52 | (M-H)- | 765.6183 | -a | -a | C53H81O3 | 750.5956, 149.0608 | hydroxyplastochromanol |
| 6 | 1.71 | (M)- | 764.6102 | -a | -a | C53H80O3 | 149.0604 | hydroxyplastoquinone |
| 7 | 1.72 | (M-2H)- | 748.6158 | (M+H)+ | 751.6385 | C53H82O2 | 188.0836, 149.0605 | plastoquinol |
| 8 | 1.89 | (M-2H)- | 794.6214 | (M+H)+ | 797.6448 | C54H84O4 | 779.5970, 219.0661 | ubiquinol |
| 9 | 2.12 | (M-H)- | 749.6227 | (M+H)+ | 751.6395 | C53H82O2 | 734.6009, 149.0608 | plastochromanol-8 |
| 10 | 2.16 | (M)- | 794.6212 | (M+H)+ | 795.6300 | C54H82O4 | 779.5974, 219.0655 | ubiquinone |
| 11 | 2.43 | (M)- | 748.6152 | (M+H)+ | 749.6232 | C53H80O2 | 188.0841, 149.0606 | plastoquinone |
a, not detected. RT, retention time. Known chemical structures are available in Figure 1.