Determination of bergenin in ardisia japonica by molecularly imprinted- matrix solid phase dispersion extraction
Why this work is in the frame
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Bibliographic record
Abstract
A simple method based on matrix solid-phase dispersion using molecularly imprinted polymers as the sorbent was developed for selective extraction of bergenin from Ardisia japonica. The MIPs were synthesized using bergenin as a template molecule, methacrylic acid as a functional monomer, and ethylene glycol dimethacrylate as a cross-linking agent. The polymers have been characterized by scanning electron microscopy and Fourier-transform infrared spectrometry. The maximum extraction yield of bergenin was obtained with the optimized extraction conditions: 2/1 as the ratio of MIPs to the sample; 8 min as the dispersion time; 10%aqueous methanol as a washing solvent and methanol-acetic acid( 99: 1,V/V) as an elution solvent. The extract obtained was analyzed by high performance liquid chromatography. The result obtained by this method was compared with that obtained by methanol extraction used in Chinese Pharmacopoeia. The results indicated that the extraction yield of bergenin obtained by MIP-MSPD was higher than that obtained by methanol extraction. Moreover,the consumption of the organic solvent and extraction time were reduced in our method,and the selectivity was also improved.
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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) | 0.001 | 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 | 0.001 |
| 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