Effects of Selected Barley Cultivars and Their Pearling Fractions on Inhibition of Human LDL Oxidation In Vitro Using a Modified Conjugated Dienes Method
Bibliographic record
Abstract
ABSTRACT Oxidation of LDL cholesterol is an important factor in the development of atherosclerosis and heart disease. In this study, selected Canadian and Egyptian barley cultivars and their pearling fractions were evaluated for antioxidant capacity to inhibit human LDL oxidation in vitro. Measurement of conjugated dienes (CD) at 234 nm was optimized to determine the degree of LDL oxidation. Dilution of oxidized LDL with iso ‐propanol gave a distinct diene conjugation peak. Significant differences in total phenols content (TPC) were found between the cultivars tested, with the hulless barley having greater TPC and inhibition capacity compared with hulled barleys. The outer layers fraction contained the highest TPC, lowest CD formation, and longest lag time, whereas the inner, or endosperm fraction, had the lowest inhibition effects. The middle pearling and hull fractions possessed intermediate inhibition effects. The inhibitory effect of barley extracts was dependent on phenols concentration following a linear or quadratic pattern. The results suggest that barley whole meals, outer layers, middle pearling, or hull fraction would be a potential LDL antioxidant.
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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 | 0.000 | 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 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".