METHOD FOR RECOGNIZING ARTIFICIAL AND NATURAL ORANGE AROMA IN JUICES AND BEVERAGES Russian patent published in 2006 - IPC G01N33/02 G01N27/06 

FIELD: chemical engineering.

SUBSTANCE: method involves forming sensor matrix composed of piezoelectric quartz resonator electrodes modified by sorbents, taking samples, preparing equilibrium gas phase, introducing it into a detection cell and recording analytical signal. The matrix is formed from six mass-sensitive piezoelectric sensors of bulk acoustic waves, with their electrodes coated with sorbent films of 8-13 mcg from polystyrene, bee glue, bee wax, trioctyl phosphine oxide, polyvinyl pyrrolidone and crown-ether. Responses from individual sensors are concurrently recorded and formed as integrated signal into kinetic visual imprint as the following sequence: polystyrene, bee glue, trioctyl phosphine oxide, polyvinyl pyrrolidone, bee wax and crown-ether. Then, the built aromagrams are compared to sample test aromagrams with degree of coincidence to standards at given significance level being taken as sample identity test criterion.

EFFECT: enhanced recognition expressiveness; accelerated matrix sensors preparation and recovery; simplified signal issuing and processing; accelerated decision-making process.

14 dwg