Food allergies have become an increasingly prevalent concern globally. For individuals with food allergies, consuming certain foods can trigger adverse and potentially life-threatening reactions. The identification and control of food allergens are paramount in the food industry to ensure the safety and well-being of consumers. In this blog, we will explore what food allergens are, common allergenic foods, labeling requirements, and strategies for managing allergenic risks in the food industry.
What are food allergens?
Food allergens are foods or components of foods to which a percentage of the consumer population may have allergies and life-threatening reactions.
Food allergens can be a serious health hazard for those with sensitivities, and food manufacturers need to take the necessary steps to ensure that their products are safe for all consumers. One of the most important steps in food allergen management is identifying which ingredients used in the manufacturing process contain potential allergens. This is a crucial part of ensuring those with food allergies are not exposed to potentially harmful ingredients.
Understanding Food Allergens
Food allergens are specific proteins present in foods that can elicit an immune response in susceptible individuals. When individuals with food allergies consume even trace amounts of these allergenic proteins, their immune system reacts, leading to various allergic symptoms. Allergic reactions can range from mild symptoms such as hives or itching to severe anaphylaxis, a potentially life-threatening reaction that requires immediate medical attention.
Common Allergenic Foods
While any food has the potential to cause an allergic reaction, certain foods are more commonly associated with allergies. These are often called the “Big Nine” allergens recognized globally.
The nine major food allergens are:
Milk: Cow’s milk and products derived from it, including cheese, yogurt, and butter.
Eggs: Chicken eggs and foods containing egg as an ingredient, such as baked goods and mayonnaise.
Fish: Common fish allergens include salmon, tuna, and cod.
Shellfish: Crustaceans (e.g., shrimp, lobster) and mollusks (e.g., clams, mussels) can trigger allergic reactions.
Peanuts: Peanuts are one of the most common allergenic foods; even small traces can induce severe reactions.
Tree nuts: This category includes various nuts like almonds, walnuts, cashews, and pistachios.
Wheat: Wheat is widely used in many food products, including bread, pasta, and baked goods.
Soy: Soybeans and soy-based products are known allergenic foods.
Sesame: Sesame seeds and ingredients derived from them, including tahini, sesame oil, and sesame flour.
Food Labeling Requirements:
Food allergens must be clearly labeled on pre-packaged food products to enable consumers to identify and avoid allergenic ingredients. Labeling requirements vary across countries, but most jurisdictions mandate the identification of major allergens either in the ingredients list or through a separate “Contains” statement.
In the United States, for example, food manufacturers must list the major allergens using their common or usual names. This includes using allergen statements such as “Contains: Milk, Eggs, Wheat” to alert consumers to potential allergens in the product.
Managing Allergenic Risks in the Food Industry
Food businesses play a crucial role in managing allergenic risks and ensuring the safety of consumers. Here are some key strategies employed in the food industry:
1. Proper Ingredient Control and Supplier Verification
Food manufacturers need to have a comprehensive understanding of their ingredients and their potential allergenic risks. Verification and validation processes should be in place to ensure that suppliers provide accurate allergen information and adhere to proper manufacturing practices to avoid cross-contamination.
2. Effective Cross-Contamination Prevention
Preventing cross-contamination is vital to minimize the risk of allergen exposure. Food facilities should implement strict protocols to clean and sanitize equipment, separate allergenic ingredients and products, and establish clear procedures for allergen handling and changeovers between production runs
3. Training and Education
Proper training and education of staff on food allergens, allergy management, and proper procedures for handling allergenic ingredients are crucial to ensuring compliance with allergen control measures. Staff should be aware of the risks associated with allergens, cross-contamination prevention, and the importance of proper labeling and communication.
4. Allergen Testing and Validation
Regular testing and validation of allergen control measures are necessary to ensure their effectiveness. This may include testing finished products or swabbing equipment surfaces to detect and measure the presence of allergenic residues.
5. Clear Communication and Allergen Consumer Awareness
Food businesses should provide clear and accurate allergen information to consumers through proper labeling and allergen statements. Additionally, education and awareness initiatives can be undertaken to inform consumers about potential allergens, cross-contamination risks, and the importance of reading food labels.
What the FDA’s 2025 Allergen Labeling Guidance Means for Manufacturers
On January 6, 2025, the FDA released Edition 5 of its Guidance for Industry on food allergen labeling, replacing earlier versions. This update is directly relevant to food manufacturers and carries several compliance implications that should be reflected in allergen management programs right away.
The tree nut list has changed. The FDA reduced its list of tree nuts requiring mandatory allergen labeling from 23 species to 12. Coconut, which was previously categorized as a tree nut for labeling purposes, has been removed from the mandatory list. Manufacturers using coconut or coconut-derived ingredients should review whether their current label declarations and allergen management procedures need to be adjusted accordingly. The 12 tree nut species that still require allergen labeling are: almonds, Brazil nuts, cashews, hazelnuts (filberts), macadamia nuts, pecans, pine nuts (pinoli), pistachios, shea nuts, walnuts, lichee nuts, and chestnuts.
“Free from” claims now have a clearer compliance boundary. The updated guidance states that a voluntary “free from [allergen]” claim on a label is considered misleading if the same label also carries a precautionary allergen labeling (PAL) statement such as “May contain [allergen]” or “Manufactured in a facility that also processes [allergen].” Manufacturers cannot have it both ways. If a facility cannot guarantee the absence of an allergen through validated cleaning procedures and dedicated equipment or production scheduling, a “free from” claim should not appear on the label.
PAL statements are not a substitute for GMP compliance. The guidance reaffirms a long-standing FDA position: allergen advisory statements cannot replace good manufacturing practices and preventive controls. A “May contain” statement on a label does not satisfy the requirement to implement allergen control procedures under 21 CFR part 117. Facilities subject to FSMA Preventive Controls requirements must still conduct a full hazard analysis and implement validated allergen controls.
Allergen threshold research is ongoing. In February 2026, the FDA held a public listening session on food allergen thresholds and their potential applications. This is an area to watch closely. While no threshold levels have been established in law for major food allergens, the FDA is actively evaluating the science. Future regulatory changes in this area could affect how manufacturers approach risk assessments, cleaning validation, and precautionary labeling decisions.
For food manufacturers, the practical takeaway from the 2025 guidance update is straightforward: label review, allergen matrix updates, and staff retraining are not one-time activities. They need to be tied to a monitoring cycle that captures regulatory changes as they happen.
Ultimate Guidelines for Food Allergen Management for Food Manufacturers
Food allergen management is essential for food manufacturers to ensure the safety of consumers with food allergies. Here are some guidelines to help navigate allergen management effectively:
Identify and Understand Allergens
Become knowledgeable about common allergens and regulatory requirements for allergen labeling, including the ‘Big Nine’ allergens (milk, eggs, fish, shellfish, peanuts, tree nuts, wheat, soy, and sesame). Sesame was added as the ninth major allergen under the FASTER Act, effective January 1, 2023, and all labeling and manufacturing requirements that apply to other major allergens now apply to sesame as well. Stay updated on any allergens specific to your region or target market.
Review and Improve Ingredient Control
Thoroughly evaluate your supply chain and ingredient specifications to identify potential allergenic ingredients. Establish robust processes to verify the allergen status of incoming ingredients and communicate clearly with suppliers. Consider dedicated supplier programs to ensure reliable sources of allergen-free ingredients.
Implement Robust Cleaning Procedures
Dedicated production lines or equipment must be used for allergen-free products. Develop detailed cleaning procedures to prevent cross-contamination during changeovers between allergenic and non-allergenic products. Consider using color-coded equipment or allergen control kits to minimize the risk of cross-contact.
Train and Educate Staff
Properly train all employees on allergen management protocols, including recognizing allergens and their sources, proper labeling practices, cleaning procedures, and handling cross-contact issues. Regularly reinforce training and educate employees about the importance of allergen control in maintaining product safety.
Accurate Labeling and Packaging
Ensure accurate allergen labeling on all products. Check ingredient lists, allergen declarations, and precautionary statements for accuracy and clarity. Implement strict quality control measures to prevent mix-ups and labeling errors during packaging.
Establish Allergen Testing Protocols
Develop an allergen testing program to validate the effectiveness of allergen control procedures. Test ingredients, product surfaces, and finished products for the presence of allergenic proteins. This helps ensure that allergen-related risks are adequately managed and can validate the effectiveness of cleaning procedures.
Implement Robust Change Control Procedures
Develop clear and effective change control procedures, incorporating allergen management considerations. Allergen risk assessments are assessed and updated whenever changes are made to ingredients, recipes, suppliers, or equipment, and changes are communicated to relevant departments.
Collaborate with Regulatory Authorities and Allergen Support Organizations
Engage with regulatory authorities to ensure compliance with labeling regulations and stay updated on any changes. Participate in industry working groups or forums dedicated to allergen management to stay informed about best practices, emerging issues, and technological advancements.
Maintain Ongoing Documentation and Review Processes
Document and maintain comprehensive records of allergen management procedures, training, testing results, and any incidents or customer complaints related to allergens. Regularly review and update your allergen management plan to incorporate learnings from incidents and improvements in industry practices.
Engage with Consumers
Encourage consumer feedback on allergen-related issues and actively address concerns. Make allergen information easily accessible through customer service channels, websites, or dedicated allergen information phone lines.
Conclusion
Finally, food manufacturers should ensure their production facilities are clean and free from cross-contamination of potentially dangerous allergens. This includes using separate production lines for products containing known allergens and taking steps to prevent them from cross-contaminating other foods. It is also important to label all food ingredients, including any potential allergens, correctly so that consumers can easily identify which items are safe for consumption. By taking these steps, food manufacturers can ensure that their products are as safe as possible for those with food allergies.
FAQs
Implementing proper food allergen management ensures accurate labeling, prevents cross-contamination, helps maintain a safe manufacturing environment, and protects the consumer from harm.
In the United States, there are now nine major food allergens: milk, eggs, fish, shellfish, peanuts, tree nuts, wheat, soy, and sesame. Food manufacturers should be knowledgeable about these allergens and any other allergens specific to their region or target market.
Food manufacturers should establish dedicated production lines or equipment for allergen-free products to prevent cross-contamination. They should also implement robust cleaning procedures and develop clear changeover protocols to ensure effective separation between allergenic and non-allergenic products.
All employees should be trained on allergen management protocols, including allergen recognition, proper labeling practices, cleaning procedures, and handling cross-contact issues.
Food manufacturers should carefully review ingredient lists, allergen declarations, and precautionary statements for accuracy and clarity. They should also implement strict quality control measures to prevent mix-ups and labeling errors during packaging.
The testing frequency can vary but should be based on risk assessment and best industry practices.
Assess and update allergen risk assessments whenever changes are made, and communicate the changes to relevant departments to ensure proper allergen management.
Food manufacturers can engage with regulatory authorities to stay updated on labeling regulations and participate in industry working groups or forums dedicated to allergen management.
Maintaining comprehensive records of allergen management procedures, training, testing results, incidents, and customer complaints is crucial because these records document compliance efforts and serve as a reference for continuous improvement.
Food manufacturers can encourage consumer feedback and ensure allergen information is easily accessible through customer service channels, websites, or dedicated allergen information phone lines.
Precautionary allergen labeling (PAL) covers voluntary advisory statements such as “May contain [allergen]” or “Manufactured in a facility that also processes [allergen].” These are not a substitute for proper allergen controls. The FDA’s updated guidance (Edition 5, January 2025) is clear that PAL statements cannot replace good manufacturing practices or FSMA preventive controls. Manufacturers must still conduct a full hazard analysis and implement validated allergen controls regardless of what the label says. A “free from” claim and a “May contain” statement also cannot appear on the same label, as the FDA considers this combination misleading.
