Internal structure of amylopectin from the pericarp tissue of developing wheat kernels
Bibliographic record
Abstract
Pericarp starch is a transient starch that forms in the developing wheat kernel and decomposes concurrently with the appearance of the endosperm. The detailed structure of the amylopectin component of pericarp starch granules was investigated and compared with amylopectin from mature wheat endosperm. Clusters of chains from the macromolecule were isolated by hydrolysis with α‐amylase from Bacillus amyloliquefaciens and were then transformed to limit dextrins using phosphorylase and β‐amylase. The pericarp clusters consisted of 14.2 chains on average and had a 16.1% degree of branching, which was similar to the characteristics of clusters from large endosperm starch granules, as was the composition of the branched building blocks. However, the pericarp clusters exhibited a somewhat lower number of the largest building blocks. Other structural attributes, such as the average number of building blocks in the clusters and the length of the interblock segments, were also similar to those of endosperm starch. It is concluded that the cluster structure of wheat pericarp amylopectin essentially matches that of its endosperm counterpart.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".