The TAA of the extract was calculated based on the formation
of the phosphomolybdenum complex. This activity was
measured spectrophotometrically at 695 nm [15] and
expressed as equivalents of ascorbic acid. Fig. 1 shows the
TAA of extracts in a concentration-dependent manner. The
extract of 100% ethanol gave the highest TAA, followed by the
extracts of 100% acetone, 100% methanol, 75% aqueous
acetone, 75% aqueous methanol, 50% aqueous acetone, 50%
aqueous ethanol, and 50% aqueous methanol. The TAA of the
water extract is the lowest and is significantly different from
that of the others (p < 0.05). The TAA of the 100% ethanol
extract is higher than that of the 100% acetone extract. However,
both extracts show significantly higher TAA than that of
the other extracts (p < 0.05). By contrast, TAAs of the other
extracts do not show significant difference from each other.