Allergenicity risk assessment of glabrous canaryseed as novel food protein source
Bibliographic record
Abstract
Glabrous canaryseed, a novel cereal grain, is emerging as a valuable source of plant proteins due to its high content in protein (22%). This true cereal was approved for human consumption in Canada and the United States, and as part of the regulatory safety assessment, its allergenic potential was evaluated. Canaryseed was found to be gluten-free and thus, suitable for individuals with celiac disease, however, possible allergic cross-reactivity between canaryseed and wheat was also revealed. Based on these findings, a cautionary labelling alluding to the potential of allergic reaction is requested on canaryseed food products, and further research to clarify the relationship between canary seed proteins and known wheat allergens was recommended. Therefore, the purpose of this study was to further assess the immunological cross-reactivity risks of canary seed to phylogenetically related grains, including wheat and oat, using wheat-allergic sera IgE based 1D and 2D- immunoblots and ELISA, followed by proteomic/bioinformatics identification of IgE-binding proteins. The results demonstrated extensive serological cross-reactivity between wheat, oat and canaryseed proteins, where the less abundant protein fractions showed the strongest IgE-binding. The in-gel tryptic digestion and LC-MS/MS identification of the IgE-binding canaryseed proteins showed high homology to proteins from wheat, barley, oat and Brachypodium distachyon (also known as stiff brome), which all belong to the Pooideae botanical subfamily. A majority of the IgE-binding proteins were mostly minor metabolic enzymes or uncharacterized proteins. Low sequence homology was observed for the 11-12S globulin storage proteins. Positive serological testing cannot ascertain allergic reaction to canaryseed, it does not rule out, however, the risks for wheat, oat or barley sensitized atopic population. Clinical oral food challenge remains the ultimate tool to conclude on the allergenicity of canaryseed. Until then, these data serve the reinforcement of the regulatory requirement to use allergen precautionary labeling for products containing canaryseed proteins.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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".