Antioxidant Constituents from<i>Xylopia championii</i>.
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Xylopia championii. Hook. f. & Thoms. (Annonaceae) is endemic to Sri Lanka. The antioxidant and antifungal activities of five alkaloids, oxopurpureine, (+)-laudanidine, (−)-discretine, nordicentrine, and dehydrocorytenchine, isolated from the stem bark and stem of X. championii., were studied. The alkaloids, (+)-laudanidine and (−)-discretine, at a concentration of 0.5 mg/mL, exhibited exceptionally high antioxidant activity, where as nordicentrine and dehydrocorytenchine showed moderate activity as compared with the standard antioxidant dl-α -tocopherol in the DPPH assay. All five alkaloids were subjected to an antifungal bioassay against Clodosporium cladosporioides.. Nordicentrine showed the most potent antifungal activity at 6 μ g/spot, and (-)-discretine showed moderate activity at 30.0 μg/spot.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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 | 0.001 |
| 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 it