Neuroprotective action of Smilax china ethanolic bark extract in treatment of a prominent aging disorder: Parkinson’s disease induced by rotenone

Future Journal of Pharmaceutical Sciences

Table 8 ABTS radical scavenging activity of Smilax china bark extract from 4 solvents (Unit: %)

µg/mL	Water	Acetone	Ethanol	Methanol	L-Ascorbic acid
50	8.50 ± 1.80^cw	60.30 ± 1.41^bw	65.27 ± 3.57^abx	64.45 ± 1.50^aw	–
100	20.74 ± 7.90^cx	76.36 ± 4.50^bx	72.30 ± 5.16^by	92.52 ± 0.47^ax	–
500	57.91 ± 2.30^cy	90.28 ± 0.60^bz	92.23 ± 0.29^bz	94.97 ± 0.02^ay	–
1000	67.14 ± 0.80^dz	87.65 ± 1.30^bz	86.68 ± 0.75^bz	92.15 ± 0.30^az	–
IC₅₀	408.6 ± 20.39^b	26.87 ± 2.66^a	34.89 ± 2.78^a	35.32 ± 1.65^a	9.64 ± 0.72

1) All measurements were taken in triplicate, and the average of three replications was used to calculate the values. Different values within a different row (a–d) and a column (w–z) are significantly different (n = 3), *p < 0.05 in comparison with the control
2) IC₅₀ (mg/mL) is the concentration for scavenging 50% of DPPH radicals