You know the rule: wheat is a major allergen, it must appear in bold in every ingredient list. And yet a product can contain wheat glucose syrup or wheat maltodextrin without the word “wheat” appearing. It is neither a loophole nor negligence: it is an exemption written into the regulation, and it has a reason.

What the law says

European Regulation 1169/2011 on consumer information lists, in its Annex II, the fourteen allergens to declare, cereals containing gluten among them. But the same annex provides exceptions, for derivatives so processed that they no longer contain the proteins responsible for reactions:

  • wheat-based glucose syrups, including dextrose;
  • wheat-based maltodextrins;
  • barley-based glucose syrups;
  • cereals used for making alcoholic distillates.

These exemptions did not fall from the sky. They were granted after examination by the European Food Safety Authority (EFSA), which assessed the manufacturing processes and analyses: glucose and maltodextrin are obtained by hydrolysing starch, a cascade of enzymatic treatments and purifications that removes the proteins. Gluten is no longer detectable with available methods. The UK kept the same exemptions after leaving the EU.

What these ingredients actually are

Glucose syrup is a liquid sugar obtained by cutting starch into glucose molecules. Dextrose is its crystallised, pure form. Maltodextrin is an intermediate: partially cut starch, a white powder with almost no taste, used as a thickener, flavour carrier and bulking agent in sauces, soups, crisps, sports drinks, tabletop sweeteners and supplements.

In Europe these three products are mostly made from corn or potato; wheat is the third source, more common in France than elsewhere because the starch industry there is historically tied to wheat. When the origin is not stated it is most often corn, but nothing requires saying so.

What it means for you

Two clearly distinct situations:

If you have celiac disease, European patient associations consider these ingredients safe, whatever the cereal of origin. A “gluten-free” product may legally contain wheat glucose syrup; it is common in biscuits and confectionery, and not a problem.

If you are allergic to wheat, a different, immediate condition that belongs to allergology rather than celiac disease, the exemption concerns you differently: the tiny residual protein traces can matter for a severe allergy. That is for your allergist, and it is why some manufacturers still choose to write “glucose syrup (wheat)”. Our article on the differences between celiac disease, gluten sensitivity and wheat allergy explains why the two are not managed the same way.

The confusing case: malt

Do not confuse maltodextrin with malt. The word looks similar, the reality is nothing alike: malt is germinated barley, and malt extract contains gluten. It is not exempt; it is declared “barley” in bold. It is found in many breakfast cereals, chocolate drinks and biscuits. We devote an article to it: malt and malt vinegar.

Another vocabulary trap: glucose-fructose syrup or corn syrup never have anything to do with gluten; and the word “dextrose” is not a warning sign, it is sugar.

What the Nutrixe scanner does

When the scanner meets “maltodextrin” or “glucose syrup” with no stated origin, it raises no alert: that would flag gluten where there is none, and “maltodextrin” is never mistaken for “malt”. When the wheat origin is written out, “wheat maltodextrin”, “wheat glucose syrup”, the scanner flags the wheat, out of caution, as it does for wheat starch: it would rather show you an exempt wheat than let a non-exempt one through. It is up to you, with this article, to know that this particular alert is covered by regulation, and to decide.

In short

  • Wheat glucose syrups, dextrose and wheat maltodextrins are exempt from allergen labelling in Europe, after EFSA assessment.
  • The process removes the proteins: no detectable gluten, considered safe for people with celiac disease.
  • People allergic to wheat are a different case and consult their allergist.
  • Not to be confused with malt (germinated barley), which contains gluten and is declared.
  • With no stated origin, the Nutrixe scanner does not flag them; with “wheat” written out, it flags out of caution, and this article tells you why you can move past it.

This information is no substitute for medical advice. For a wheat allergy, what to do is decided with an allergist, not with an ingredient list.