Table 7.
Regression models for the chemical parameters (total carotenoid content and antioxidant capacity) of the spray-dried SBO powders produced with the addition of gum arabic (GA), β-cyclodextrin (β-CD), and a mixture thereof (GA:β-CD) and the corresponding values of the coefficient of determination (R2) and adjusted coefficient of determination (R2adj).
| Carrier | Response | Model | R2 | R2adj |
|---|---|---|---|---|
| GA | Total carotenoids | 2500.56 − 36.96X1 + 0.15X12 − 1001.72X2 + 96.23X22 + 17.01X1X2 − 1.92X1X22 − 0.07X12X2 + 0.01X12X22 | 0.997 | 0.995 |
| ORAC | 2249.89 − 13.985X1 + 0.029X12 − 962.584X2 + 143.702X22 + 10.734X1X2 − 1.254X1X22 − 0.026X12X2 + 0.002X12X22 | 0.997 | 0.995 | |
| β-CD | Total carotenoids | −13485.8 + 199.7X1 − 0.7X12 + 10875.1X2 − 1794.3X22 − 159X1X2 + 26.4X1X22 + 0.6X12X2 − 0.1X12X22 | 0.993 | 0.987 |
| ORAC | 6113.31 − 78.85X1 + 0.24X12 − 3867.04X2 + 808.49X22 + 55.41X1X2 − 10.65X1X22 − 0.16X12X2 + 0.03X12X22 | 0.999 | 0.999 | |
| GA:β-CD (1:1) | Total carotenoids | −4930.09 + 70.36X1 − 0.23X12 + 4780.04X2 − 855.38X22 − 65.39X1X2 + 11.58X1X22 + 0.21X12X2 − 0.04X12X22 | 0.997 | 0.993 |
| ORAC | −21035.1 + 299.2X1 − 1X12 + 17054.6X2 − 2752.4X22 − 233.6X1X2 + 38.1X1X22 + 0.8X12X2 − 0.1X12X22 | 0.998 | 0.996 |
Effect of temperature (X1); effect of the carrier-to-oil ratio (X2).