Analysis of Structure and Free Radical Scavenging Activities of Ribes nigrum Polysaccharides
Bibliographic record
Abstract
Six kinds of crude polysaccharides were precipitated with 80%,70%,60%,50%,40% and 30% ethyl alcohol respectively from Ribes nigrum fruit. Then the DPPH·,OH·and O2-·scavenging activities were investigated after purified by macroporous resin D4006. The results showed that six kinds of polysaccharides had certain scavenging activities and the polysaccharides precipitated with 80% ethanol(BCP-1) had stronger free radical elimination capacity. Homogeneous component(BCP-1-Ⅱ) was prepared after further purification from BCP-1 by Sephadex G-100. The compositions of the main fraction BCP-1-Ⅱwere identified and quantified by GC and HPLC. Results indicated that BCP-1-Ⅱhad an average molecular weight of 51880 u and contained arabinose,mannose,glucose and galactose with the molar ratio of 9.08:1.00:15.77:0.41. Characteristic absorption of polysaccharide was shown in IR spectrum and the monomer of backbone of BCP-1-might Ⅱ be α-pyranose.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.002 | 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".