Effects of Drying Temperature and Storage on Parthenolide Concentration of Feverfew (Tanacetum parthenium L.) Leaves
Bibliographic record
Abstract
ABSTRACT Feverfew is a perennial aromatic herb. Parthenolide, one of its chemical components, is a marker compound that is possibly responsible for the abatement of migraines. Studies were carried out to determine the effect of drying temperature and storage on the concentration of the marker compound. Feverfew leaves were dried, ground into powder and the pathenolide extracted was analyzed using High Pressure Liquid Chromatography (HPLC). Results showed that drying the leaves at temperatures in the range of 30 to 60°C did not significantly affect the parthenolide concentration. In this study, storage temperature in the range of −15 to 24°C did not significantly affect parthenolide concentration. However, parthenolide concentration decreased as a function of time over 120 days of storage. In this study, the best storage condition consisted of storing powdered leaves at freezer conditions (-15°C).
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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 | 0.000 | 0.001 |
| 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 | 0.000 |
| 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".