Table 2.

Effects of Mitra tea and herbal components on metal-chelating activity (MCA) and free radical scavenging capacities.

Sample	MCA assay	Radical scavenging properties (IC50; mg/mL)∗∗
	(IC50; mg/mL)∗	DPPH assay	ABTS assay
Mitra tea	1.58 ± 0.26	0.40 ± 0.04	0.89 ± 0.02
MS	1.54 ± 0.02b	0.19 ± 0.02a	0.11 ± 0.00b
CS	2.67 ± 0.86d	1.87 ± 0.20b	0.57 ± 0.01c
BO	6.99 ± 0.62e	4.26 ± 0.11d	0.11 ± 0.00b
CA	0.22 ± 0.00a	1.61 ± 0.11b	0.21 ± 0.00b
FF	2.31 ± 0.11d	0.34 ± 0.05a	0.10 ± 0.00b
JG	0.62 ± 0.20a	3.15 ± 0.38c	0.80 ± 0.11d
AI	1.89 ± 0.85c	0.14 ± 0.01a	0.08 ± 0.00a
Std.	0.01 ± 0.00	0.03 ± 0.00	0.02 ± 0.00

^∗IC₅₀ of EDTA (a positive control) was 0.01 ± 0.0004 mg/mL.

^∗∗The IC₅₀ values of Trolox obtained from the DPPH and ABTS assays were 0.03 and 0.02 mg/mL, respectively.

^a–eValues in the same column with different superscripts are significantly different (p < 0.05).