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Food allergens—such as milk, eggs, gluten-containing grains, tree nuts, peanuts, and soy—can pose serious health risks to sensitive individuals. Allergic reactions range widely, from mild symptoms to life-threatening conditions such as anaphylaxis. Therefore, the accurate detection of allergens in food products and the support of label information with reliable analytical data play a critical role in protecting consumer health.
Allergen analyses are among the fundamental components of food safety management systems in terms of assessing cross-contamination risks, validating production lines, and ensuring regulatory compliance.
Gluten analyses hold a unique position within allergen controls. Celiac disease is an autoimmune disorder that causes damage to the small intestine in individuals with a genetic predisposition following gluten consumption. Since even very low levels of gluten can pose a health risk to people with celiac disease, it is essential to determine gluten levels with high sensitivity and accuracy.
ELISA-based immunological assays are among the most commonly used methods for this purpose. It is crucial for the reliability of the results that these methods are validated in terms of detection limit, measurement uncertainty, and matrix effects.
In accordance with the Turkish Food Codex and international regulations, the gluten content in foods labeled as “gluten-free” must not exceed 20 mg/kg (ppm). For products marketed as “very low gluten,” the upper limit is set at 100 mg/kg.
Accordingly, manufacturers must regularly monitor not only their raw materials but also their production environments and final products, and verify potential cross-contamination through analyses. Similarly, the presence of other allergens—such as milk, eggs, soy, nuts, and peanuts—must also be controlled using analytical methods based on risk assessments.
To ensure that allergen analyses yield reliable results, it is of great importance that these tests be conducted in laboratories accredited under the ISO/IEC 17025 standard. Within the framework of accreditation, results obtained using validated methods, traceable reference materials, quality control practices, and proficiency tests contribute to ensuring both regulatory compliance and consumer safety.
Today, allergen analyses are viewed not only as a regulatory requirement but also as a strategic control mechanism for protecting public health and ensuring the sustainability of reliable food production.
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