Table 1.
Plants collection, parts tested and voucher number
| Plant | Voucher speciment no. |
Locality | Family | Part tested | Extraction yield | |
| Picralima nitida Durand | FHI109572 | Benin City | Apocynaceae | stem | 11.25 | |
| PNS1 | 2.23 | |||||
| PNS2 | 1.45 | |||||
| PNS3 | 2.23 | |||||
| PNS4 | 1.08 | |||||
| PNS5 | 3.45 | |||||
| Persea americana Mill | FHI 107767 | Ovia north east local | Lauraceae | Root, seed | 40.68 ( R) | |
| PASC | government area, | 5.78 | ||||
| PARP | Edot State | 2.34 | ||||
| PAS | 12.85 | |||||
| Jatropha podagrica Hook | FHI 93265 | Owan east local | Euphorbiaceae | fruit | 7.02% | |
| government area, | ||||||
| Edo State | ||||||