Sample	0 min	10 min	20 min	40 min	Decress rate (%)	Inhibit rate (%)
Control	0.278 ± 0.001	0.249 ± 0.001	0.240 ± 0.001	0.236 ± 0.002	15.11	------
PPM	0.302 ± 0.006^a	0.301 ± 0.001^a	0.284 ± 0.003^a	0.276 ± 0.003^a	8.61	43.02
PMA	0.312 ± 0.001^a	0.304 ± 0.003^a	0.290 ± 0.005^a	0.278 ± 0.001^a	10.9	27.86
PMB	0.316 ± 0.004^a	0.312 ± 0.002^a	0.289 ± 0.001^a	0.282 ± 0.002^a	10.76	28.79
PMC-1	0.314 ± 0.004^a	0.306 ± 0.008^a	0.284 ± 0.003^a	0.276 ± 0.003^a	12.1	19.92