Flavonoids Extraction from Taraxacum officinale (Dandelion): Optimisation Using Response Surface Methodology and Antioxidant Activity

Table 2

BBD for independent variables and extraction yield.

Run	𝑋1 (%, v/v)	𝑋2 (mL/g)	𝑋3 (min)	𝑌 (%)
1	+1	+1	0	2.38
2	0	+1	−1	2.43
3	−1	+1	0	2.41
4	−1	0	−1	2.44
5	−1	0	+1	2.49
6	−1	−1	0	2.43
7	0	0	0	2.60
8	+1	0	+1	2.49
9	0	−1	+1	2.52
10	+1	0	−1	2.42
11	+1	−1	0	2.40
12	0	0	0	2.63
13	0	+1	+1	2.48
14	0	0	0	2.65
15	0	0	0	2.58
16	0	0	0	2.61
17	0	−1	−1	2.36