METHOD FOR INDUSTRIAL FLAVOURS QUALITY ASSESSMENT Russian patent published in 2008 - IPC G01N33/02 

FIELD: assessment of industrial flavors quality.

SUBSTANCE: method consists in the following: sampling of specimen is done in volume of 2.0-4.0 cm³ or mass of 1.00-2.00 g, which is placed in vessel with volume of 10 cm³ with lapped cover and self-sealing membrane for air sampling, then kept there for 10-15 minutes, 2.0-4.0 cm³ of balanced gas phase are sampled through membrane, then injected into airtight detection cell of "piezoelectronic nose" device on the basis of array of 8 mass-sensitive piezosensors, on electrodes of which on both sides films are applied with mass of 5-10 micrograms made of solutions of polystyrene in toluene, apiezon L in acetone, polyethylene glycol sebacate in acetone, polyvinyl pyrrolidone in acetone, triton X-100 in ethanol, mixture of tri-octylphosfinoxide with polystyrene in toluene, crown-ether in toluene, 4-aminoantipyrene in ethanol, change of peizosensors signals in pairs of specimen balanced gas phase is registered for 2.0-2.5 minutes with interval of 10 sec, at that responses of piezosensors are formed as visual signal in kinetic mass-flavourgram, and assessment of industrial flavour quality is carried out by means of comparison of geometry and area of mass-flavourgrams of tested specimen and standard specimen.

EFFECT: development of method for express assessment of industrial flavours quality without complicated multi-stage preparation of sample and without complex equipment; method that provides high efficiency, correctness, accuracy, simplicity of analysis and also reduction of analysis time.

2 dwg