Table 2.
Summary of recent reports on modern extraction techniques of flavonoids.
| Extraction Technique | Target Flavonoids | References |
|---|---|---|
| Microwave-assisted extraction (MAE) | Flavonol, catechins | [113,131] |
| Ultrasound-assisted extraction (UAE) | Flavonols (isoquercitrin, quercetin) | [132,133,134] |
| Anthocyanins | [135] | |
| Flavones (methoxyflavones) | [136] | |
| Supercritical fluid extraction (SFE) | Flavanone (pinocembrin) | [137] |
| Flavonol (galangin) | [138] | |
| Flavones | [121,139] | |
| Pulsed electric field extraction (PEFE) | Flavanones | [140] |
| Enzyme-assisted extraction (EAE) | Anthocyanins | [129,130,141] |
| Flavones | [142,143,144] | |
| UAE + deep eutectic solvents | Flavanones, flavonols | [145,146] |
| UAE + butylene Glycol | Flavonols (catechins) | [147] |
| MAE + deep eutectic solvents | Flavones (trifolin, isoquercetin, kaempferol), flavonols (astragalin, quercetin, hyperoside) | [148] |
| UAE + EAE | Anthocyanins | [149] |
| MAE + ionic liquids | Flavones | [150] |