| OP | Orange pomace |
| VMAE | Vacuum-microwave-assisted extraction |
| GAE | Gallic acid equivalents |
| QE | Quercetin equivalents |
| RSM | Response surface methodology |
| DM | Dry matter |
| TPE | Extracted total polyphenols of the extract in mg GAE |
| TFE | Extracted total flavonoids of the extract in mg QE |
| CSE | Conventional solvent extraction |
| UAE | Ultrasound-assisted extraction |
| MAE | Microwave-assisted extraction |