Meaning
Selection protocols for choosing standardized chemical substances that mimic the extraction behavior of specific food categories determine the compliance testing strategy for packaging. Food simulant selection dictates whether ethanol, acetic acid, or vegetable oil is used in migration tests. These choices are based on the acidity and fat content of the food being packaged.
Chemical Correspondence
Distilled water or ten percent ethanol represents aqueous foods with a neutral pH level. Three percent acetic acid is chosen for acidic products like fruit juices or vinegar based sauces. Correct food simulant selection ensures that the laboratory test replicates the worst case leaching scenario.
Test Condition
Temperature and duration settings must match the intended storage conditions of the final product. High temperature short term contact requires different simulants than long term refrigerated storage. Testing failures occur when the selected medium interacts too aggressively with the polymer surface.
Regulatory Compliance
Official lists in the European Union and the United States specify the mandatory simulant for each food type. Moulders must provide accurate product descriptions to the lab to ensure the correct protocols are followed. Documentation of food simulant selection forms a part of the mandatory declaration of compliance.
This choice influences the cost and speed of the testing program because some simulants require more complex analytical clean up steps than others.
