Table 1. Caffeoylquinic acid (CQA) contents of methanolic plant extracts.
| Sample | 3-CQA | 4-CQA | 5-CQA | 3,5-diCQA | 3,4-diCQA | 4,5-diCQA | Total CQA |
|---|---|---|---|---|---|---|---|
| Ilex paraguariensis (brand A) | 25.11 ± 0.97a | 18.11 ± 0.44a | 23.11 ± 0.44a | 21.22 ± 1.01a | 7.11 ± 0.55b | 12.22 ± 0.41a | 108.05 ± 1.12a |
| Ilex paraguariensis (brand B) | 21.69 ± 1.02b | 14.90 ± 1.01b | 18.88 ± 0.67b | 21.01 ± 0.37a | 7.53 ± 0.41b | 12.22 ± 0.85a | 98.21 ± 0.86b |
| Ilex paraguariensis (brand C) | 21.55 ± 0.97b | 15.02 ± 0.44b | 18.01 ± 1.11b | 20.35 ± 0.73a | 7.33 ± 0.55b | 12.01 ± 0.86a | 97.69 ± 0.77b |
| Stevia rebaudiana (brand A) | 16.66 ± 0.65c | 9.11 ± 0.60c | 19.61 ± 0.31b | 16.16 ± 0.54b | 6.43 ± 0.51b | 9.22 ± 0.24b | 78.79 ± 1.07c |
| Stevia rebaudiana (brand B) | 17.11 ± 0.43c | 9.04 ± 0.51c | 19.22 ± 0.31b | 16.79 ± 0.36b | 6.21 ± 0.61b | 9.55 ± 0.30b | 79.11 ± 0.75c |
| Stevia rebaudiana (brand C) | 17.94 ± 0.12c | 9.12 ± 0.66c | 19.11 ± 0.23b | 17.01 ± 0.91b | 6.11 ± 0.81b | 8.97 ± 0.34b | 79.26 ± 0.74c |
| Pluchea indica (L.) Less. (brand A) | 3.11 ± 0.82d | nd | 23.97 ± 0.24a | 17.22 ± 0.63b | 10.65 ± 0.51a | 6.07 ± 0.14c | 63.11 ± 1.32d |
| Pluchea indica (L.) Less. (brand B) | 3.71 ± 0.21d | nd | 23.16 ± 0.31a | 17.11 ± 0.69b | 11.01 ± 0.93a | 5.99 ± 0.21c | 62.66 ± 0.96d |
| Pluchea indica (L.) Less. (brand C) | 4.66 ± 0.80d | nd | 24.01 ± 0.83a | 17.65 ± 0.55b | 11.11 ± 0.95a | 5.89 ± 0.11c | 64.59 ± 1.18d |
Note:
Data are presented as the means ± standard deviations of three independent replicates and expressed in mg/g of DW. For each compound, values in the same column followed by different superscript letters are significantly different (p < 0.05). nd, not detected (detection limit = 1.09 µg/mL).