ANTIOXIDANT ACTIVITY OF PHENOLIC FRACTIONS OF WHITE BEAN (<i>PHASEOLUS VULGARIS</i>)
Why this work is in the frame
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Bibliographic record
Abstract
ABSTRACT An extract from white bean seeds was prepared using 80% (v/v) acetone. Four fractions (I‐IV) ‐were separated from the crude extract on a Sephadex LH‐20 column using methanol as the mobile phase. The antioxidant activity of fractions was investigated in a β‐carotene‐linoleate model system. For individual fractions, IV spectra were recorded and the content of total phenolics was determined. Fractions were also characterized based on the number of phenolic compounds, and their antioxidant activity determined by TLC analysis. The presence of caffeic, p‐coumaric, ferulic, and sinapic acids in the form of free and estrified compounds was found in fraction IV. One dominant phenolic compound was present in fraction III after acid hydrolysis with a maximum absorption at 278 nm. Results of the β‐carotene‐linoleate model system indicated that antioxidant activity of separated fractions did not correlate exactly with their content of total phenolic compounds and were in the order of IV>III>II>I. Individual fractions contained several phnolic compounds as noted by TLC. Spots on the plates sprayed with a solution of p carotene‐linoleate indicated that these compounds can act as natural antioxidants. Absorption maxima in the W spectra showed that jlavonoids, and not phenolic acids, were the main phenolic compounds present in the separated fractions.
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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) | 0.001 | 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 | 0.001 |
| 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