Table 1.

Experimental design and results for microwave extracting of Anoectochilus roxburghii.

Run	Microwave time	Microwave power	Solid–liquid ratio	Ethanol concentration	Total phenolics yield (%)
1	20	200	50	70	0.9047
2	50	200	50	70	1.0440
3	20	400	50	70	0.9674
4	50	400	50	70	1.1457
5	20	200	70	70	0.9024
6	50	200	70	70	0.8754
7	20	400	70	70	0.8686
8	50	400	70	70	1.0373
9	20	200	50	80	0.9867
10	50	200	50	80	1.0477
11	20	400	50	80	0.9481
12	50	400	50	80	1.1939
13	20	200	70	80	0.9698
14	50	200	70	80	1.1047
15	20	400	70	80	1.0643
16	50	400	70	80	1.1924
17	5	300	60	75	0.6743
18	65	300	60	75	0.8038
19	35	100	60	75	0.7067
20	35	500	60	75	0.8408
21	35	300	40	75	0.7024
22	35	300	80	75	0.7510
23	35	300	60	65	1.2476
24	35	300	60	85	1.0791
25	35	300	60	75	1.1840
26	35	300	60	75	1.1898
27	35	300	60	75	1.1551
28	35	300	60	75	1.1262
29	35	300	60	75	1.1666
30	35	300	60	75	1.1898