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E325 Sodium Lactate – Food Additive Explained

E325 is the EU food additive sodium lactate, the sodium salt of lactic acid. It is used as an acidity regulator, humectant, and preservative in a wide range of food products.

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Things worth knowing about "E325"

E325 is the EU food additive sodium lactate, the sodium salt of lactic acid. It is used as an acidity regulator, humectant, and preservative in a wide range of food products.

What is E325 (Sodium Lactate)?

E325 refers to sodium lactate, the sodium salt of naturally occurring lactic acid (lactate). It appears as a clear, slightly viscous liquid or a white powder and is produced by neutralizing lactic acid with sodium hydroxide. Lactic acid itself is generated during the fermentation of carbohydrates by lactic acid bacteria. In the food industry, sodium lactate is approved under the European food additive number E325.

Uses in Food

E325 serves several technological functions in food production:

Acidity regulator: Sodium lactate stabilizes and regulates the pH of food products, contributing to consistent quality.
Humectant (moisture-retaining agent): It binds water and prevents food from drying out, improving texture and shelf life.
Preservative: By lowering pH and exhibiting antimicrobial properties, E325 inhibits the growth of bacteria and mould, extending product shelf life.
Flavour enhancer: In small amounts, sodium lactate can round out and improve the taste of food products.

Typical applications include processed meat and poultry products, baked goods, desserts, sauces, and marinades.

Safety and Assessment

Sodium lactate is considered safe according to current scientific evidence. The European Food Safety Authority (EFSA) and the World Health Organization (WHO) classify E325 as safe for consumption, as lactate is a natural metabolic product of the human body. No Acceptable Daily Intake (ADI) value has been established, as no safety concerns arise from normal dietary exposure.

Considerations for Specific Groups

Individuals with sodium-sensitive hypertension (high blood pressure) should be aware that E325 contains a small amount of sodium, although the contribution from food additives is generally negligible.
In very rare cases of lactic acidosis (pathologically elevated blood lactate levels), intake should be discussed with a physician.
E325 is generally considered suitable for vegan and vegetarian diets, as it is typically produced biotechnologically from plant-based raw materials.

Medical Significance of Lactate

Lactate is not only a food additive but also a vital molecule in human metabolism. It is produced during anaerobic glycolysis when muscles generate energy without sufficient oxygen, such as during intense physical exercise. In clinical medicine, sodium lactate is also used as a component of intravenous infusion solutions (e.g., Ringer's lactate solution) for the treatment of dehydration, metabolic acidosis, and shock states.

Labelling Requirements

Under European food additive regulation (EC) No. 1333/2008, E325 must be listed in the ingredient declaration of food products either as E325 or as sodium lactate.

References

European Food Safety Authority (EFSA): Re-evaluation of lactic acid (E 270), potassium lactate (E 326), sodium lactate (E 325) and calcium lactate (E 327) as food additives. EFSA Journal, 2018.
World Health Organization (WHO) / FAO: Codex Alimentarius - General Standard for Food Additives (GSFA). WHO/FAO, current edition.
Regulation (EC) No. 1333/2008 of the European Parliament and of the Council on food additives. Official Journal of the European Union.

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