Table 2.
Total phenolic compounds and total anthocyanins contents determined by the experiments and predicted values based on the Box–Behnken design.
| Run | Factors | Responses | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| X 1 | X 2 | X 3 | X 4 | X 5 | X 6 | YTPC (mg g−1) | YTA (mg g−1) | |||
| Experimental | Predicted | Experimental | Predicted | |||||||
| 1 | 0 | 0 | −1 | 0 | −1 | −1 | 4.1767 | 3.5242 | 2.0668 | 2.0057 |
| 2 | 0 | 0 | 1 | 0 | −1 | −1 | 2.9561 | 3.2168 | 1.9910 | 2.0681 |
| 3 | 0 | 0 | −1 | 0 | 1 | −1 | 3.2035 | 3.0330 | 1.7513 | 1.5964 |
| 4 | 0 | 0 | 1 | 0 | 1 | −1 | 2.9146 | 2.7132 | 1.3774 | 1.3945 |
| 5 | 0 | 0 | −1 | 0 | −1 | 1 | 2.2442 | 2.7397 | 1.8422 | 1.8561 |
| 6 | 0 | 0 | 1 | 0 | −1 | 1 | 2.6180 | 2.4945 | 1.9246 | 2.0485 |
| 7 | 0 | 0 | −1 | 0 | 1 | 1 | 3.0296 | 3.0630 | 1.6633 | 1.6171 |
| 8 | 0 | 0 | 1 | 0 | 1 | 1 | 2.4469 | 2.8053 | 1.5150 | 1.5452 |
| 9 | 0 | −1 | 0 | −1 | −1 | 0 | 2.7012 | 2.9196 | 1.9020 | 2.0085 |
| 10 | 0 | 1 | 0 | −1 | −1 | 0 | 2.5148 | 2.6226 | 2.1472 | 1.9832 |
| 11 | 0 | −1 | 0 | 1 | −1 | 0 | 2.4628 | 2.7319 | 1.7641 | 1.9643 |
| 12 | 0 | 1 | 0 | 1 | −1 | 0 | 2.7902 | 2.3765 | 2.1085 | 1.9085 |
| 13 | 0 | −1 | 0 | −1 | 1 | 0 | 2.3645 | 2.5574 | 1.3898 | 1.4864 |
| 14 | 0 | 1 | 0 | −1 | 1 | 0 | 2.5099 | 2.4617 | 1.5738 | 1.4770 |
| 15 | 0 | −1 | 0 | 1 | 1 | 0 | 3.0411 | 2.7125 | 1.4975 | 1.5580 |
| 16 | 0 | 1 | 0 | 1 | 1 | 0 | 2.5560 | 2.5584 | 1.5213 | 1.5182 |
| 17 | −1 | 0 | −1 | −1 | 0 | 0 | 4.7011 | 4.7646 | 1.3071 | 1.4164 |
| 18 | 1 | 0 | −1 | −1 | 0 | 0 | 2.8642 | 3.0163 | 0.3299 | 0.4692 |
| 19 | −1 | 0 | 1 | −1 | 0 | 0 | 2.6618 | 2.4707 | 1.6671 | 1.4487 |
| 20 | 1 | 0 | 1 | −1 | 0 | 0 | 3.3118 | 3.3064 | 0.2508 | 0.4251 |
| 21 | −1 | 0 | −1 | 1 | 0 | 0 | 2.7490 | 3.3144 | 1.5527 | 1.3750 |
| 22 | 1 | 0 | −1 | 1 | 0 | 0 | 3.3056 | 2.9367 | 0.2837 | 0.5053 |
| 23 | −1 | 0 | 1 | 1 | 0 | 0 | 2.0515 | 2.4593 | 1.5521 | 1.4096 |
| 24 | 1 | 0 | 1 | 1 | 0 | 0 | 5.2890 | 4.6655 | 0.5696 | 0.4635 |
| 25 | 0 | −1 | −1 | 0 | 0 | −1 | 3.6635 | 3.7722 | 1.5621 | 1.5809 |
| 26 | 0 | 1 | −1 | 0 | 0 | −1 | 3.9095 | 4.0100 | 1.6094 | 1.6217 |
| 27 | 0 | −1 | 1 | 0 | 0 | −1 | 3.2906 | 3.1606 | 1.4842 | 1.5197 |
| 28 | 0 | 1 | 1 | 0 | 0 | −1 | 4.1254 | 3.9944 | 1.5655 | 1.5434 |
| 29 | 0 | −1 | −1 | 0 | 0 | 1 | 4.3195 | 4.1564 | 1.5901 | 1.5813 |
| 30 | 0 | 1 | −1 | 0 | 0 | 1 | 3.0355 | 2.8714 | 1.5588 | 1.4924 |
| 31 | 0 | −1 | 1 | 0 | 0 | 1 | 3.4133 | 3.6069 | 1.6314 | 1.6501 |
| 32 | 0 | 1 | 1 | 0 | 0 | 1 | 2.7325 | 2.9179 | 1.5319 | 1.5441 |
| 33 | −1 | −1 | 0 | 0 | −1 | 0 | 2.7751 | 2.5609 | 1.9114 | 1.9364 |
| 34 | 1 | −1 | 0 | 0 | −1 | 0 | 3.3414 | 3.0735 | 1.4900 | 1.0493 |
| 35 | −1 | 1 | 0 | 0 | −1 | 0 | 2.7997 | 3.0478 | 2.1634 | 2.3055 |
| 36 | 1 | 1 | 0 | 0 | −1 | 0 | 1.8618 | 1.9341 | 0.4220 | 0.5990 |
| 37 | −1 | −1 | 0 | 0 | 1 | 0 | 1.6920 | 1.8405 | 1.1957 | 1.1220 |
| 38 | 1 | −1 | 0 | 0 | 1 | 0 | 3.4394 | 3.4122 | 0.9739 | 0.9352 |
| 39 | −1 | 1 | 0 | 0 | 1 | 0 | 2.4817 | 2.5288 | 1.1699 | 1.5071 |
| 40 | 1 | 1 | 0 | 0 | 1 | 0 | 2.4807 | 2.4741 | 0.6292 | 0.5008 |
| 41 | −1 | 0 | 0 | −1 | 0 | −1 | 2.8317 | 2.8012 | 1.3718 | 1.3445 |
| 42 | 1 | 0 | 0 | −1 | 0 | −1 | 1.9561 | 2.1494 | 0.3941 | 0.3867 |
| 43 | −1 | 0 | 0 | 1 | 0 | −1 | 2.1085 | 2.0093 | 1.2244 | 1.2897 |
| 44 | 1 | 0 | 0 | 1 | 0 | −1 | 1.9760 | 2.7280 | 0.3625 | 0.4094 |
| 45 | −1 | 0 | 0 | −1 | 0 | 1 | 2.3904 | 2.1984 | 1.4082 | 1.3581 |
| 46 | 1 | 0 | 0 | −1 | 0 | 1 | 2.3983 | 1.9376 | 0.4072 | 0.3451 |
| 47 | −1 | 0 | 0 | 1 | 0 | 1 | 2.2821 | 1.5288 | 1.3218 | 1.3324 |
| 48 | 1 | 0 | 0 | 1 | 0 | 1 | 2.0481 | 2.6386 | 0.3728 | 0.3969 |
| 49 | 0 | 0 | 0 | 0 | 0 | 0 | 2.3484 | 2.5702 | 1.7592 | 1.7190 |
| 50 | 0 | 0 | 0 | 0 | 0 | 0 | 2.7464 | 2.5702 | 1.7587 | 1.7190 |
| 51 | 0 | 0 | 0 | 0 | 0 | 0 | 2.4622 | 2.5702 | 1.7139 | 1.7190 |
| 52 | 0 | 0 | 0 | 0 | 0 | 0 | 2.6377 | 2.5702 | 1.7742 | 1.7190 |
| 53 | 0 | 0 | 0 | 0 | 0 | 0 | 2.6370 | 2.5702 | 1.6840 | 1.7190 |
| 54 | 0 | 0 | 0 | 0 | 0 | 0 | 2.5892 | 2.5702 | 1.6238 | 1.7190 |