Table 1.

Extraction yield of burdock root tea using various conditions

Number of roasting	Extraction time (min)	Concentration (mg/mL)	Yield (%)
0	30	1.00	71.78±7.70
3	30	1.00	68.81±10.50
6	30	1.00	68.32±8.40
0	60	1.00	44.55±0.10
3	60	1.00	36.63±1.40
6	60	1.00	40.97±0.74
6	60	0.10	59.00±8.49
6	60	0.25	42.50±16.26
6	60	0.50	51.50±2.12

Values are mean±SD of six separate experiments.