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Table 4 Contents of six compounds in the DB samples

From: Characterization and determination of six flavonoids in the ethnomedicine “Dragon’s Blood” by UPLC-PAD-MS

No. Purchase location Contents of six compounds (mg /g, n = 3)
Dracorhodin (1) 4,6-Dihydroxy-2 -methoxy-3-methyldihydrochalcone (2) 4,6-Dihydroxy-2-methoxy-3-methylchalcone (3) (2S)-5,7- Dihydroxy-dihydroflavone (4) (2S)-5-Methoxy flavan-7-ol (5) (2S)-5-Methoxy-6-methylflavan-7-ol (6)
DB1 Hong Kong 1.69 0.78 1.14 0.49 24.79 4.98
DB2 Hong Kong 0.93 1.11 0.46 0.47 21.01 6.60
DB3 Hong Kong 4.76 0.98 0.28 0.24 13.07 4.38
DB4 Hong Kong 0.77 0.21 0.06 0.02 4.18 3.03
DB5 Hong Kong 0.41 0.93 0.13 0.11 7.66 4.42
DB6 Beijing 15.71 10.58 4.22 2.65 87.94 23.88
DB7 Chengdu 16.46 5.69 1.36 1.21 59.32 20.01
DB8 Chengdu 8.49 2.90 1.27 0.85 42.67 11.81
DB9 Chengdu 2.64 7.85 0.26 1.44 58.78 13.70
DB10 Tianjin 30.24 17.78 1.84 3.98 167.64 47.38
DB11 Tianjin 3.04 4.63 1.96 1.30 41.78 23.48
DB12 Jilin 22.10 13.66 3.19 13.58 83.23 58.80