Phytochemical Studies and Antioxidant Properties of Methanolic and Aqueous Extracts of the Leaves of Mallotus Oppositifolius
Bibliographic record
Abstract
Mallotus oppositifolius is a tropical plant used to treat many medical conditions in Africa. Preliminary phytochemical screening conducted on the crude methanol and aqueous extracts of the plant revealed the presence of alkaloids, flavonoids, saponins, tannins, steroids, cardiac glycosides and terpenoids in both extracts of the plant. However, only the aqueous extract showed the absence of anthraquinones. The research also used DPPH (1, 1-diphenyl-2-picrylhydrazyl) free radical as a substrate to determine the scavenging ability (antioxidant property) of the extracts. Antioxidant activity was further investigated quantitatively for flavonoid and total phenolic contents in the two extracts, using spectrophotometry. Both the methanol and aqueous extracts of the plant were observed to have exhibited antioxidant activity, with the aqueous extract having the higher scavenging ability (% inhibition) of 49.02± 0.16 than the methanol extract of 9.04± 0.07. Similarly, the aqueous extract had a higher flavonoid content of 206.8 ± 31.06 μg/g than the methanol extract 84.00 ± 33.96 μg/g. Also, the aqueous extract had its total phenolic content to be 1066.97±26.42 μg/g while the methanol extract had 672.0±20.07μg/g as its total phenolic content. The percentage alkaloid content in methanol and aqueous extracts were measured to be 8.6 % and 4.3% respectively. Key Words: Phytoconstituents, antioxidant activity, flavonoid content, alkaloid content
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".