The Effect of Chlorophyll Degradation (ECD) as Qualitative Antioxidant Assay in Eruca sativa Leaves
Bibliographic record
Abstract
Resumo: A atividade antioxidante de um composto uma propriedade biolgica que tem como funo retardar as reaes de degradao oxidativa, e desta forma, reduzir a velocidade da oxidao por um ou mais mecanismos, como a inibio de radicais livres ou a complexao de metais. O papel dos antioxidantes proteger as clulas sadias do organismo contra a ao oxidante dos radicais livres. Este trabalho tem como objetivo contribuir com uma nova forma de determinar qualitativamente a capacidade antioxidante de substncias orgnicas, usando uma metodologia simples e de baixo custo. Tanto o efeito do sequestro de radicais livres (DPPH) como o efeito da degradao da clorofila (EDC) mostraram que a atividade depende da concentrao. A atividade antioxidante pelo DPPH variou de acordo com o material examinado, com valores de IC 50 que foram 2,60x10 -5 mg.mL -1 para a quercetina, em comparao com os padres positivos 3,95x10 -6 mg.mL -1 (trolox) e 6,29x10 -6 mg.mL -1 (vitamina C). No entanto, revelou diferena significativa apenas para o sitosterol, mostrando que a quercetina, trolox e vitamina C so substncias antioxidantes.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".