Wheat protein hydrolysates and allergic reactions in wheat-sensitive people
What it found
Some enzyme-broken wheat proteins blocked allergy antibodies in blood from five wheat-sensitive people, while acid-broken versions did not.
The tests used human blood samples in the lab.
What they found
Studies in people and animals
Allergy antibody blocking
Acid-broken wheat proteins barely stopped allergy antibodies from binding to wheat in the blood of five sensitive people. Some enzyme-broken samples did block this binding in lab tests using human blood.
Other findings
Size of protein pieces
Enzyme-broken wheat proteins had many large pieces weighing more than 1,050 Da. Acid-broken wheat proteins had very few pieces that large.
What the authors conclude
- They suggest that eating enzyme-broken wheat proteins could still trigger allergic reactions in people sensitive to wheat.
- The authors advise caution with processed foods containing these enzyme-broken wheat proteins.
How it was done
Broken-down wheat proteins are widely used as food additives and in cooking around the world. Scientists wanted to see how the size of these protein pieces relates to their ability to trigger allergy antibodies.
They tested store-bought wheat protein samples broken down by either enzymes or acid. They measured the sizes of the protein pieces. They then mixed these samples with blood serum from five people who are sensitive to wheat to check for allergy antibody reactions.
What it can’t tell you
- We summarised it from the abstract only.
- This work used blood samples in a lab rather than feeding people the proteins. It cannot show what actually happens when someone eats these ingredients.
- Only five people provided blood samples. Their results may not apply to everyone with a wheat sensitivity.
Who paid
- Authors work at
- National Institute of Health Sciences, Japan
The paper
- Title
- Profile analysis and immunoglobulin E reactivity of wheat protein hydrolysates
- Type
- Study
- Evidence
- Studies in people · animals · lab
- Summarised from
- Abstract only
- Cite
- Akiyama H, Sakata K, Yoshioka Y, et al (2006). Profile analysis and immunoglobulin E reactivity of wheat protein hydrolysates. International archives of allergy and immunology. doi:10.1159/000092000PubMed 16534217DOI
Summary written 30 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error