Table 1.

Effects of the organic solvent, PBS, and matrix effect from the color of vegetables on ic-ELISA.

Methanol	IC50 (µg/kg)	PBS, pH = 7.2	IC50 (µg/kg)
50%	1.60 ± 0.60	1×	1.40 ± 0.68
25%	0.80 ± 0.12	2×	1.20 ± 0.56
10%	0.40 ± 0.24	3×	1.80 ± 0.62
5%	0.52 ± 0.33	4×	2.20 ± 1.02
		5×	4.00 ± 2.24
		DI water	10.0 ± 6.78
Matrix effect from the colors of vegetable samples		IC50 (µg/kg)
Tomato		0.90 ± 0.42
Kale		0.90 ± 0.38
Chinese cabbage		1.40 ±0.66