Evaluation of properties of native and modified phyto-polymer, starches of Curcuma angustifolia and development of polymeric films
Bibliographic record
Abstract
In the present study, polysaccharide-starch of Curcuma angustifolia was isolated and modified by chemical reactionsacetylation, hydroxy-propylation and carboxy-methylation.The acetyl, hydroxypropyl, carboxylmethyl groups percentage and degree of substitution (DS) for acetylated, hydroxypropylated and caboxymethylated starches of C. angustifolia were determined 6.89%, 0.28%, 0.06%, and 0.04, 1.30 ,0.75, respectively.The introduction of carboxymethyl group significantly increase the swelling power and solubility while gelatinization temperature was reduced to 68.70 0 C in modified starch in comparison to native (97.03 0 C) starch of C. angustifolia.Similarly, examination of water absorption capacity showed increasing trend in modified starches.The suspensions from native and modified starches were prepared and polymeric films were developed utilizing glycerol as plasticizer.The casted films thickness varied between 0.040-0.160mm.The mechanical properties of different polymeric blends showed wide variation (81.1-427.5 kgf/cm 2 ).The maximum tensile strength showed in acetylated modified blend (427.5 kgf/cm 2 ) and PVOH blend C. angustifolia (391.79 kgf/cm 2 ) while the polymeric film blend with native potato starch, prepared for comparison, showed minimum tensile strength (81.1 kgf/cm 2 ).
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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 | 0.002 | 0.001 |
| 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 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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 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".