Auditing Analytical Test Scope Limits for Food Contact Board Certificates
Auditing food contact board certificates requires verifying laboratory test simulants, thermal parameters, and surface ratios against real package converting limits.
MOSH MOAH Extraction
Analytical Method
Specialized chromatographic techniques isolate saturated and aromatic hydrocarbons derived from mineral oils present in recycled paperboard and printing inks. Solvents extract mineral oil saturated hydrocarbons and mineral oil aromatic hydrocarbons from fiber samples prior to two-dimensional gas chromatography analysis. Laboratory technicians quantify short-chain and long-chain hydrocarbon fractions to assess potential health risks associated with mineral oil migration into dry food products.
MOSH MOAH extraction provides essential analytical data for evaluating recycled paperboard safety profiles in food packaging applications.
Source Identification
Contamination analysis traces mineral oil origins to offset printing inks, recycled newsprint furnish, functional adhesives or machine lubricants used during paper manufacturing. Saturated hydrocarbons accumulate in human tissues, whereas aromatic hydrocarbons contain potential carcinogenic compounds requiring strict monitoring. Testing laboratories apply online coupled liquid chromatography to gas chromatography to separate saturated fractions from aromatic fractions before flame ionization detection.
Identifying specific hydrocarbon chain distributions helps mills trace contamination sources back to raw material inputs or converting equipment lubricants.
Safety Boundary
Threshold guidelines establish toxicological action levels for mineral oil fractions present in paperboard packaging. Proposed European regulations recommend maximum migration limits of two milligrams per kilogram of food for saturated hydrocarbons and zero point five milligrams per kilogram for aromatic hydrocarbons. Substrate batches exceeding mineral oil limits require inclusion of functional barrier coatings or substitution with virgin fiber stocks.
Systematic extraction testing prevents non-compliant paperboard packaging from entering retail food distribution networks.