METHOD FOR DETECTION OF EARLY DECAY OF MEAT AND MEAT PRODUCTS, VIOLATION OF PRODUCTION TECHNOLOGY AND RECIPE Russian patent published in 2012 - IPC G01N33/12 G01N27/12 

FIELD: food industry.

SUBSTANCE: method involves formation of a matrix of 8 sensors based on AT-cut piezoquartz resonators with basic oscillation frequency equal to 9-10 MHz, heir electrodes modified by way of application of film with weight amounting to 10-15 mcg onto their surface as a sorbent, the film consisting of acetone solutions of polyethylene glycol succinate, polyethylene glycol PEG 2000, trioktylphosphinoxide, oktylpolyetoxiphenol, polyoxy-ethylene(20)-sorbitan-monooleate, dicycohexan-18-crown-6 in toluene; rhodamine 6Zh in ethanol, carbon nanotubes in chloroform; then one performs removal of solvent excess in a drying oven at a temperature no higher than 40°C during 20 minutes, collects a 3 g sample, prepares an equilibrium gas phase (for the latter purpose the sample is placed into a 40 cm³ glass weighing bottle which is tightly closured with a polyurethane cap and maintained during 30 minutes), collects a sample of the equilibrium gas phase, injects it into the cell, performs registration and processing of analytical signals of sorption in the course whereof responses of individual sensors are recorded simultaneously during 60 sec and are converted, in the form of a resultant signal, into a kinetic "visual imprint" that is compared to the standard; analysed samples "visual imprints" matching the standards by more than 75%, confirms their identity while reduction of identity degree below 75% forms evidence of meat and meat products decay.

EFFECT: enhancement of determination informativity, reliability and rapidity.

1 tbl, 1 dwg