Extraction and Antioxidant Activity of Tannic in Juglans mandshurica Maxim
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Bibliographic record
Abstract
Juglans mandshurica Maxim. tannins was extracted by ultrasonic method. Tannins content was determined by UV spectrophotometry. The effects of the volume fraction of acetone,ultrasonic temperature,ultrasonic time,and ratio of material to liquid on tannins were evaluated by orthogonal test method in the ultrasonic experiment. The optimal extraction conditions for the tannins in green peel of J. mandshurica were the volume fraction of acetone of 40%,ultrasonic temperature of 40℃,extraction time of 30 min,and solid-liquid ratio of 1∶15. The optimal extraction conditions for the tannins in leaves of J. mandshurica were the volume the fraction of acetone of 50%,ultrasonic temperature of 60℃,extraction time of 40 min,and solid-liquid ratio of1∶20. The tannins in both green peel and leaves had excellent scavenging capacity for hydroxyl radical,nitrite ions and superoxide anion. The ability of scavenging three kinds of free radicals of the tannins in leaves was stronger than that of the green peel. J. mandshurica tannins had strong antioxidation,and the tannins was with potential pharmaceutical value as a good natural antioxidant.
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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) | 0.000 | 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) | 0.000 | 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