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Total flavonoids content of different brands of tea using conventional and ultrasonic treatment.
| Sample (Brand) | Conventional | (mg/g DW) | |
|---|---|---|---|
| Ultrasonic (26 kHz) | Ultrasonic (40 kHz) | ||
| Rabea | 8.12 ± 0.30 | 27.77 ± 0.01 | 14.85 ± 0.45 |
| Lipton | 9.0 ± 0.33 | 24.00 ± 0.01 | 17.82 ± 0.30 |
| Alkbous | 6.97 ± 0.37 | 17.50 ± 0.28 | 11.19 ± 0.27 |
| Green Gold | 12.02 ± 0.32 | 25.11 ± 0.24 | 17.86 ± 0.45 |
| Haritham | 39.87 ± 0.48 | 58.25 ± 0.41 | 34.14 ± 0.33 |
