Table 2.

Effect of inhibitors on ginger polyphenol oxidase. K_m, V_max, K_i and I₅₀ values were shown

Inhibitors	[I] (mg/mL)	I50 (mg/mL)	Inhibition (%)	Vmax (EU/min/mL)	Km (mM)	Ki (mM)	Type of inhibition
Control Sonneratia.alba				25,241.12	3.29
	0.125	1.013	24.88	17,420.45	3.28	0.28	Non-competitive
	0.25		34.27	15,994.98	3.24	0.43
	0.5		35.68	15,305.64	3.28	0.77
Rhizophora apiculate	0.125	0.672	23.47	18,570.31	4.31	0.35/1.78	Mixed
	0.25		39.44	15,392.52	4.72	0.39/2.35
	0.5		40.85	15,038.48	5.02	0.74/2.56
Syzygium grande	0.125	1.005	32.39	17,515.04	2.45	0.28	Un-competitive
	0.25		35.21	15,740.07	2.16	0.41
	0.5		39.91	15,106.13	2.08	0.75
Rhizophora mucronata	0.125	0.535	15.49	21,311.33	2.95	0.68	Un-competitive
	0.25		41.31	14,656.42	2.16	0.35
	0.5		44.13	13,864.16	2.03	0.61
Hibiscus tiliaceus	0.125	0.560	14.55	21,418.46	3.49	0.70/1.25	Mixed
	0.25		36.62	15,393.00	3.81	0.39/1.90
	0.5		43.19	14,328.29	3.91	0.66/2.09
Bruguiera gymnorhiza	0.125	0.527	10.80	22,194.50	2.86	0.91	Un-competitive
	0.25		39.44	14,570.95	1.86	0.34
	0.5		44.13	13,523.47	1.70	0.58