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. 2016 Apr 6;21(4):453. doi: 10.3390/molecules21040453

Table 1.

Structural and chromatographic characteristics of four main flavanones in P. trifoliata extracts.

graphic file with name molecules-21-00453-i001.jpg No. Flavanone Rt (min) UV-Peak (λ/nm) R1 R2 R3 [M − H]− (m/z) MS/MS (m/z)
1 Narirutin 12.73 283.0, 330.6 rutinose H OH 579 151,271,313
2 Naringin 15.3 283.0, 328.2 neohesperidose H OH 579 151,271,313
3 Didymin 24.91 283.0, 329.4 rutinose H OCH3 593 285,309
4 Poncirin 25.41 283.0, 328.2 neohesperidose H OCH3 593 285,309