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Fig. 2 | BMC Complementary and Alternative Medicine

Fig. 2

From: In vitro α-glucosidase inhibitory activity of isolated fractions from water extract of Qingzhuan dark tea

Fig. 2

HPLC chromatogram of individual phenolic compounds in the QEF8. peak 1 GA: [M + H]+ 171.0, MS2 152.8, 126.9; peak 2 EGC: [M + H]+ 307.1, MS2 288.9, 138.9; peak 3 C: [M + H]+ 291.0, MS2 273.4, 139.4; peak 4 EGCG: [M + H]+ 459.2, MS2 288.9, 138.9; peak 5 GCG: [M + H]+ 459.2, MS2 288.9, 138.9; peak 6 EC: [M + H]+ 291.0, MS2 273.4, 139.4; peak 7 ECG: [M + H]+ 443.1, MS2 272.9, 150.9; and peak 8 CG: [M + H]+ 443.1, MS2 272.9, 150.9

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