E923 (ammonium persulfate)

E923 is ammonium persulfate, a food additive used as a flour improver. In this range of E-numbers, you can find glazing agents, packaging gases, propellants, flour improvers, and sweeteners, so adjacent numbers can indicate completely different substances.

It is better to evaluate such an additive not by fear of the letter E, but by its function and context. Wax on the surface of fruit, gas in packaging, sweetener in a drink, and oxidizer for flour have different meanings for nutrition and health.

What is this additive

Ammonium persulfate has the following basis: ammonium salt of persulfuric acid. It is used for its technological effect rather than for its nutritional value.

For some numbers in this range, the current status is particularly important. Old reference books may include substances that are no longer used as common food additives in the EU, UK, or other countries.

Why it is used

Historically, it has been used as an oxidizer in flour. In production, it helps manage appearance, sweetness, aroma, foaming, texture, packaging environment, or dough behavior.

In home cooking, such tasks are often unnecessary: the product can be eaten fresh, prepared in small portions, or made with simple ingredients. In industrial food, the additive helps withstand storage, transportation, and achieve consistent results.

Nutritional value and metabolism

E923 typically does not provide complete nutrition. Even sugar-free sweeteners are not equivalent to healthy products: they change sweetness but do not add protein, fiber, micronutrients, or satiety on their own.

For keto, LCHF, diabetes, and weight control, it is important to look at the entire recipe. With sweeteners, individual glucose and appetite responses need to be considered, and with glazing agents and gases, it should be understood that they have little effect on macronutrients.

Safety and tolerance

Due to its oxidative properties and status, it requires careful regulatory scrutiny. Individual tolerance depends on dosage, frequency of consumption, age, gut condition, metabolism, medications, and underlying health issues.

If bloating, diarrhea, cravings for sweets, headaches, skin reactions, or unusual symptoms recur after consuming products with E923, it is worth comparing the compositions of several products. Sometimes the culprit is not a single additive but a combination of sweeteners, flavorings, acids, caffeine, and sugar alcohols.

How to evaluate on the label

Look not only at E923 but also at neighboring ingredients. A sweetener next to acids and flavorings usually indicates a sweet drink or dessert; a glazing agent next to sugar and colorings indicates a confectionery product; packaging gas often simply protects the product.

The practical conclusion: Ammonium persulfate should not be automatically feared, but it should not be considered a neutral quality mark either. The simpler the basic composition and the less frequently the product appears in the diet, the less significance a single technological additive has.