Table 4.
Stratification meta-analysis of data on individual phenolic compound concentrations according to the type of stevia extract.
| Type of Extract | Compound | Effect Size (mg CGAE/g dry sample) |
CI 95% | Number of Studies |
|---|---|---|---|---|
| Aqueous | 3-caffeoylquinic acid | 2.25 | 1.24, 3.26 | 5 |
| 3,4-dicaffeoylquinic acid | 2.64 | 1.16, 4.11 | 5 | |
| 3,5-dicaffeoylquinic acid | 50.53 | 25.21, 75.82 | 5 | |
| 4-caffeoylquinic acid | 11.85 | 6.09, 17.60 | 5 | |
| 4,5-dicaffeoylquinic acid | 18.69 | 4.73, 32.63 | 5 | |
| 5-caffeoylquinic acid | 1.65 | 0.69, 2.58 | 5 | |
| 5-coumaroyl quinic acid | 0.07 | 0.05, 0.09 | 5 | |
| caffeoyl shikimic acid | 0.36 | 0.12, 0.59 | 5 | |
| Compound |
Effect Size
(mg/g dry sample) |
CI 95% | Number of Studies | |
| Hydroalcoholic | 3-caffeoylquinic acid | 2.91 | 0.70, 5.11 | 4 |
| Organic | 4,5-dicaffeoylquinic acid | 13.15 | 9.20, 17.11 | 5 |
| 5-caffeoylquinic acid | 23.39 | 19.44, 27.34 | 5 |
CGAE: chlorogenic acid equivalents; CI 95%: 95% confidence interval.