Table 1: Precarthamin and carthamin contents (μg/g DW) and antioxidant capacities in flowers of two C. tinctorius varieties at flowering stage.

Isolated molecule Content ( g/g DW)VarietyAntioxidant activity
FRAPADPPHBChelating powerC

Carthamin42.05 ± 1.52a“Jawhara”210.33 ± 0.25a1.23 ± 0.12b9.23 ± 0.29b
35.22 ± 0.23b“104”115.15 ± 0.02b2.33 ± 0.52a10.33 ± 0.01a
Precarthamin902.41 ± 0.28a“Jawhara”98.26 ± 0.01a2.98 ± 0.54b11.01 ± 0.51b
866.11 ± 0.58b“104”83.27 ± 0.74b3.15 ± 0.04a12.33 ± 0.25a

Synthetic antioxidants

BHT 16.00 ± 0.02
EDTA100.00 ± 0.01
Blank52.11 ± 0.01

The FRAP values were expressed in TE M/mL and B,CIC50 values were expressed in g/mL. Data are reported as means ± SD ( ) and compared to control (C). ANOVA is followed by Duncan multiple range test ( ). Values in the same column with different superscripts (a-b) are significantly different at .