Table 2.
Correlation of primary and secondary metabolites in C. nucifera cotyledons with EC50 recorded in free radical scavenging assays.
| DPPH | FRAP | FTC | TBA | NO | β CBA | |
|---|---|---|---|---|---|---|
| TP | -0.84 | -0.447 | 0.932 | 0.988 | -0.792 | -0.832 |
| TC | -0.94 | -0.59 | 0.945 | 0.995 | -0.811 | -0.935 |
| TL | 0.961 | 0.452 | -0.986 | -0.954 | 0.938 | 0.956 |
| TPC | -0.942 | -0.859 | 0.771 | 0.866 | -0.603 | -0.945 |
| TFC | -0.954 | -0.841 | 0.792 | 0.878 | -0.633 | -0.957 |
| TTC | -0.984 | -0.639 | 0.939 | 0.969 | -0.827 | -0.981 |
| TAlC | 0.958 | 0.501 | -0.983 | -0.985 | 0.898 | 0.952 |
| TAC | -0.993 | -0.647 | 0.933 | 0.954 | -0.831 | -0.991 |
TP: Total protein content.
TC: Total carbohydrate content.
TL: Total lipid content.
TPC: Total phenolic content.
TFC: Total flavonoid content.
TTC: Total tannin content.
TAlC: Total alkaloid content.
TAC: Total antioxidant content.
DPPH: 2,2-diphenyl-1-picrylhydrazyl free radical scavenging assay.
FRAP: Ferric reducing antioxidant power.
FTC: Ferric thiocyanate assay.
TBA: Thiobarbituric acid assay.
NO: Nitric oxide radical scavenging assay.
β CBA: β-carotene bleaching assay.