Table 4. Pearson correlation matrix among physicochemical and antioxidant properties of Schefflera abyssinica and polyfloral honey.
| Variables | Moisture | OD | pH | Ash | EC | Color | Fructose | Glucose | Sucrose | Brix | TPC | TFC | DPPH | H2O2 |
| RI | -1.** | .496 | .520 | .646 | .590 | . 582 | -.573 | .178 | -.563 | .997* | -.283 | -.228 | -.273 | -.186 |
| Moisture | -.496 | -.520 | -.646 | -.590 | -.582 | . 573 | -.718 | .663* | -.997* | .283 | .228 | .273 | .186 | |
| OD | .594 | . 478 | .576 | .887* | -.581 | . 480 | -.490 | . 651 | -.489 | -.287 | -.478 | -.467 | ||
| pH | .467 | .560 | .809* | -.475 | .396 | -.433 | .541 | -.578 | -.476 | -.580 | -.285 | |||
| Ash | .868* | .848* | -.634 | .489 | -.371 | . 569 | .827* | .800* | .746* | .678* | ||||
| EC | . 280 | -.501 | .189 | -.362 | .608 | .755* | .765* | .720* | .809* | |||||
| Color | -.481 | .199 | -.797 | .468 | 981* | 970* | 952* | .817* | ||||||
| Fructose | -.563 | .385 | -.572 | .580 | .577 | .475 | .540 | |||||||
| Glucose | -.671* | .560 | -.487 | -.690 | -.386 | -.189 | ||||||||
| Sucrose | -.654 | .483 | .117 | .447 | .544 | |||||||||
| Brix | .583 | .338 | .557 | .564 | ||||||||||
| TPC | .934* | .918* | .738* | |||||||||||
| TFC | .934* | .832* | ||||||||||||
| DPPH | .805* |
DPPH = 1,1-diphenyl-2-picrylhydrazyl scavenging activity; EC = electrical density; H2O2 = hydrogen peroxide scavenging activity; RI = refractive index; OD = optical density; TFC = total flavonoid content; TPC = total phenolic content.
* Correlation is significant at p< 0.01.