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LC-UV chromatograms (370 nm) of crude extracts prepared at 100 µg/mL in MeOH for (a) cones and 1 mg/mL in MeOH for (b) leaves, (c) stems and (d) rhizomes. Compounds identified are as follows: desmethylxanthohumol (1) rt 1.70 min, xanthohumol (2) rt 2.78 min, cohumulone (3) rt 4.37 min, humulone (4) rt 4.75 min, adhumulone (5) rt 4.86 min, colupulone (6) rt 6.31 min, lupulone (7) rt 6.92 min, adlupulone (8) rt 7.05 min.
