Table 2 Analytical/statistical data from standard curves and quantification of bitter acids and xanthohumol present in hops
From: Inhibitory capacity of extracts and main constituents of hop flowers
Compound | λ (nm) | Rt ≈ (min) | Standard curve range (mg/mL) n = 7 | Standard curve equations | R2 | Commercial pellets g/100 g | Cones (Brazil) | |||
|---|---|---|---|---|---|---|---|---|---|---|
Matured hop g/100 g | First Bloom g/100 g | |||||||||
Saaz n = 3 (RSD%) | Herkules n = 3 (RSD%) | Chinook-1 n = 3 (RSD%) | Chinook-2 n = 3 (RSD%) | Cascade n = 3 (RSD%) | ||||||
Xanthohumol (XN) | 340 | 5.7 | 0.006–0.18 (n = 6) | y = 44.97 × + 67.39 | 0.999 | 0.010 (12.86) | 2.165 (4.90) | 2.402 (5.51) | 0.432 (16.98) | 0.083 (13.57) |
Cohumulone (α1) | 326 | 12.8 | 0.027–0.432 | y = 10,533 × − 4.4493 | 0.991 | 0.675 (3.14) | 2.810 (4.03) | 1.360 (11.57) | 0.345 (10.25) | 0.327 (15.23) |
Humulone + Adhumulone (α2) | 326 | 14.1 | 0.079–1.264 | y = 10,669 × − 79.51 | 0.997 | 1.172 (6.04) | 6.045 (1.29) | 5.054 (17.31) | 0.945 (20.20) | 0.386 (18.76) |
Colupulone (β1) | 326 | 15.2 | 0.032–0.576 | y = 7,785 × + 88.62 | 0.996 | 1.260 (7.86) | 1.405 (21.47) | 0.144 (9.43) | 0.355 (17.92) | 0.145 (13.54) |
Lupulone + Adlupulone (β2) | 326 | 16.0 | 0.034–0.538 | y = 10,159 × − 40.358 | 0.993 | 0.985 (7.90) | 1.290 (16.55) | 0.092 (8.99) | 0.375 (14.51) | 0.166 (14.99) |
Total | 4.102 | 13.715 | 9.052 | 2.452 | 1.107 | |||||