METHOD TO ASSESS SAFETY OF PACKAGING POLYMER MATERIALS FOR THERMAL PROCESSING OF VACUUMISED FOOD PRODUCTS Russian patent published in 2015 - IPC G01N27/00 G01N33/44 

FIELD: measurement equipment.

SUBSTANCE: invention relates to analytical chemistry of food production facilities. The method to assess safety of packing polymer materials for thermal processing of vacuumised food products includes formation of a polymer material in the form of a packet, its vacuumising, sealing and thermal processing, after which the packet is thermostatted at room temperature, 5.0 cm³ of dried air is pierced into it with a syringe, and in 5 minutes, not taking the syringe out, they take 3.0 cm³ of air. The produced sample is introduced into a tight cell of detection in a "piezoelectronic nose" device, which comprises an array of seven mass-sensitive piezosensors. They record variation of signals of piezosensors in pairs of equilibrium gas phase of the sample for 60 s with the interval of 1 s, the highest responses of piezosensors are formed into a mass-aromogram of maxima, the area of the mass-aromogram is calculated. Under identical conditions they analyse the standard sample of the polymer material. Assessment of safety of the polymer material is carried out by comparison of the area of mass-aromograms of the analysed sample and the standard sample. Difference of the area of mass-aromograms by more than 30.0±1.0% certifies non-compliance of the sample with the standard of the polymer package.

EFFECT: invention makes it possible to assess the level of possible emission of highly volatile compounds from polymer materials in process of thermal processing with increased accuracy and reduction of analysis time.

2 dwg, 1 tbl