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Extract yield (mg/100 g DW) from different brands of tea using conventional and ultrasonic treatment.
| Sample (Brand) | Extract Yield (mg/100 g DW) |
||
|---|---|---|---|
| Conventional | Ultrasonic (26 kHz) | Ultrasonic (40 kHz) | |
| Rabea | 12.35 ± 0.15 | 18.61 ± 0.27 | 15.71 ± 0.10 |
| Lipton | 7.46 ± 0.19 | 15.65 ± 0.10 | 8.98 ± 0.08 |
| Alkbous | 12.83 ± 0.14 | 22.43 ± 0.12 | 14.79 ± 0.04 |
| Green Gold | 11.71 ± 0.11 | 19.36 ± 0.13 | 11.95 ± 0.07 |
| Haritham | 17.68 ± 0.14 | 32.68 ± 0.14 | 21.93 ± 0.04 |
