Researches on Purification Technologic Conditions of Lespedeza dunnii Flavonoids with AB-8 Macroporous Resin and Comparision of their Purification Antioxidant Changes before and after Being Purified
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Bibliographic record
Abstract
Objective: To study the conditions and parameters of purifying total flavonoids from L.dunnii with AB-8 macroporous resin and to compare with antioxidant ability before and after being purified.Method:Some factors which effected purification in static and dynamic adsorptions were studied.Furthermore,the antioxidant ability were also determined.Result:The concentration of the sample solution was 0.3 mg/mL.In static adsorption,the effects were preferable when temperature was at 20～40 ℃ and pH value was 4～5 and using 70% ethanol as desorption reagent. In dynamic adsorption,pH value of sample solution was 4～5 and flowing rate of loading was 0.5～1.0 mL/min. Using 70%～90% ethanol and 0.5～1.5 mL/min flow rate,the eluting effect was good.The clearance rates of 0.12 mg/mL refined flavonoid powder and crude flavonoid powder were 78.43% and 29.25% respectively.The inhibitory rates to pyrogallol autoxidation of 0.375 mg/mL crude flavonoid powde and refined flavonoid powder were 98.49% and 63.02% respectively.Conclusion:AB-8 macroporous resin had an excellent purification effect to crude flavonoid of Lespeda dunnii.The purity and antioxidant abbility were improved remarkably.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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 | 0.001 |
| 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