Non-starch polysaccharides in malting barley and their modification during malting and mashing
Bibliographic record
Abstract
The focus of this thesis was on characterizing β-glucans and arabinoxylans in selected Canadian malting barley genotypes, and on investigating the effects of different grain hydration levels during steeping on the content and physicochemical properties of these polysaccharides in malt and wort. The results of the first study revealed that Canadian malting barley genotypes differed not only in the content but also in the fine molecular features and properties of B-glucans and arabinoxylans. In the second study, grain hydration levels showed significant differences in the concentration of B-glucans in malt and wort. The impact of variable grain hydration levels on the concentration of arabinoxylans in malt and wort was less pronounced. Grain hydration levels affected the fine molecular structure and molar mass of β-glucans and arabinoxylans isolated from wort, and showed differences between genotypes. The information generated in this thesis about molecular properties of B-glucans and arabinoxylans may be useful to breeders and end users of Canadian malting barley.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".