3.1.3. TFC
The TFC of the extracts are reported in Table 1. The TFCs can be grouped into four levels. The first and the highest level (29.34e31.11 mg QCE/g DFLA) with the highest value belongs to the 100% ethanol extract (31.11 mg QCE/g DFLA), followed by the 100% acetone extract (30.86 mg QCE/g DFLA) and the 75% aqueous acetone extract (29.36 mg QCE/g DFLA). The second level (19.22e22.51 mg QCE/g DFLA) includes the 75% aqueous methanol extract (22.51 mg QCE/g DFLA), the 75% aqueous ethanol extract (19.47 mg QCE/g DFLA), and the 50%
aqueous acetone extract (19.22 mg QCE/g DFLA). The third level (11.11e17.19 mg QCE/g DFLA) includes the 50% aqueous ethanol (17.19 mg QCE/g DFLA), the 100% methanol extract (15.42 mg QCE/g DFLA), and the 50% aqueous extract (11.11 mg QCE/g DFLA). The final level with the lowest TFC, is the water extract (4.04 mg QCE/g DFLA). It was observed that the effect of solvents on TFC is similar to that on TPC. The highest TFC was obtained in the 100% ethanol extract, followed by the 100% acetone extract, the 100% methanol extract, and the water extract. A similar trend was observed in the amount of TPC. As the concentration of water in ethanol or acetone increases, the TFC in the extract decreases. By contrast, the TFC in the 75% aqueous methanol extract is higher than that in the 100% methanol extract and the 50% aqueous methanol extract.