Food Enzyme Safety Assessment and Allergenicity

Food enzymes are integral to modern food processing, facilitating transformations such as starch hydrolysis, dairy modification and flavour development. Safety assessment of these biocatalysts encompasses evaluation of the production organism, genetic modifications, downstream purification, toxicology and potential allergenicity. Regulatory frameworks require a systematic approach to characterise enzyme source organisms—microbial, plant or animal—ensuring the absence of pathogenicity and undesirable metabolites. Manufacturing processes are scrutinised to confirm the removal of production residues and to determine the concentration of total organic solids (TOS) in the final preparation. Toxicological testing includes acute, subchronic and genotoxicity studies to establish a no-observed-adverse-effect level (NOAEL) and to assess margins of safety relative to estimated dietary exposure. Allergenicity assessment involves in silico sequence homology comparisons with known allergens, in vitro serum screening and, where necessary, animal models. Special attention is paid to IgE-mediated hypersensitivity, as some industrial enzymes have elicited respiratory or oral reactions in sensitised individuals. Overall, the convergence of robust toxicological data, refined dietary exposure models and targeted immunological assays underpins the global safety evaluation of food enzymes and informs risk management decisions to protect consumer health.

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Food Enzyme Safety Assessment and Allergenicity publication trend

The graph below shows the total number of articles in food enzyme safety assessment and allergenicity across all publications each year (not limited to Nature Index journals).

Technical terms

Total Organic Solids (TOS): The fraction of an enzyme preparation comprising protein, carbohydrates and other organic material after removal of water and inorganic salts, used to estimate consumer exposure.

No-Observed-Adverse-Effect Level (NOAEL): The highest tested dose in a toxicological study at which no treatment-related adverse effects are observed, forming the basis for safety margins.

IgE-mediated hypersensitivity: An immune reaction in which immunoglobulin E antibodies bind to an antigen, triggering mast cell degranulation and allergic symptoms.

Sequence homology screening: A bioinformatic comparison of an enzyme’s amino acid sequence against known allergen databases to identify regions of potential cross-reactivity.

References

1. Exposure assessment of food enzymes. EFSA Journal (2016).
2. Toxicological Evaluation of Lactase Derived from Recombinant Pichia pastoris. PLOS ONE (2014).
3. Anaphylaxis to supplemental oral lactase enzyme. Allergy, Asthma & Clinical Immunology (2016).
4. Sensitization to industrial enzymes in enzyme research and production.. Scandinavian Journal of Work, Environment & Health (1997).