Identification of Anthocyanins and Optimization of Their Extraction from Rabbiteye Blueberry Fruits in Nanjing

Table 2

Box–Behnken experimental results.

Group	A	B	C	Y	SD
	Time	Ethanol concentration	Liquid-to-solid ratio	Anthocyanin extraction yield (mg/g)
1	0	0	0	8.049	0.292
2	0	0	0	9.497	0.250
3	1	0	−1	1.714	0.157
4	0	0	0	4.750	0.126
5	−1	0	1	4.777	0.149
6	0	1	1	15.602	0.112
7	0	0	0	8.914	0.098
8	1	0	1	16.210	0.440
9	−1	−1	0	4.584	0.162
10	1	1	0	9.548	0.325
11	0	−1	1	12.601	0.226
12	0	1	−1	3.622	0.106
13	1	−1	0	6.965	0.089
14	0	−1	−1	1.668	0.045
15	0	0	0	10.661	0.635
16	−1	0	−1	2.026	0.009
17	−1	1	0	5.242	0.081