Table 1.
LC–DAD–ESI-MS/MS identification of the major constituents of Arrabidaea chica (AC) extract.
Figure 1.
LC–DAD chromatogram at 335 nm of the hydroethanolic extract of Arrabidaea chica leaves.
The peaks are labeled according to the compounds listed in Table 1.
Figure 2.
HPLC chromatogram of the Arrabidaea chica extract.
Peak 1 (scutellarein) and peak 2 (apigenin).
Table 2.
Linearity parameters for the calibration curve of scutellarein and apigenin.
Table 3.
Repeatability and intermediate precision data for the determination of scutellarein and apigenin by HPLC.
Table 4.
Results of the recovery test for scutellarein and apigenin from the extract of A. chica.
Table 5.
Quantification of scutellarein and apigenin in extract of leaves from A. chica by HPLC.
Figure 3.
DPPH radical scavenging capacity of Arrabidaea chica (AC) extract.
R2 = 0.9897.
Table 6.
Antioxidant activity of the extract of A. chica on β-carotene-linoleate system.
Table 7.
Antioxidant activity of the extract of A. chica, scutellarein, and apigenin by TRAP (µM Trolox).