Table 5.
Correlation coefficient between chemical composition and tests for antidiabetic and antioxidant activities of aqueous and organic extracts of Leopoldia comosa (L.) bulbs.
| Variables | Polyphenols | Flavonoids | Tannins | H2O2 | ABTS | RP | FRAP | DPPH | Alpha-amylase | Alpha-glucosidase | Beta-galactosidase |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Polyphenols | 1 | 0.9705 | 0.7381 | 0.3407 | 0.8873 | 0.9905 | 0.9807 | 0.9545 | −0.3081 | 0.6769 | −0.3813 |
| Flavonoids | 1 | 0.8396 | 0.5272 | 0.7708 | 0.9890 | 0.9188 | 0.9233 | −0.3112 | 0.4969 | −0.5158 | |
| Tannins | 1 | 0.8354 | 0.4240 | 0.8007 | 0.6492 | 0.5792 | −0.2023 | 0.1585 | −0.6514 | ||
| H2O2 | 1 | −0.0375 | 0.4389 | 0.2218 | 0.2049 | 0.0719 | −0.3094 | −0.5861 | |||
| ABTS | 1 | 0.8515 | 0.9549 | 0.8982 | −0.2220 | 0.8135 | −0.0031 | ||||
| RP | 1 | 0.9646 | 0.9439 | −0.3006 | 0.5834 | −0.4245 | |||||
| FRAP | 1 | 0.9549 | −0.2872 | 0.7234 | −0.2399 | ||||||
| DPPH | 1 | −0.3231 | 0.6222 | −0.3180 | |||||||
| Alpha-amylase | 1 | −0.1038 | 0.3942 | ||||||||
| Alpha-glucosidase | 1 | 0.1751 | |||||||||
| Beta-galactosidase | 1 |
H2O2: hydrogen peroxide scavenging assay; ABTS: Trolox equivalent antioxidant capacity (TEAC) method/ABTS radical cation decolorization assay; FRAP: ferric reducing-antioxidant power assay; RP: reducing power method; DPPH: DPPH scavenging activity.