The Electrochemiluminescent Method for Detection of Meat Freshness

Abstract:

It is companied by the production of sulfide and ammonia in the process of meat spoilage.The complex modified electrode assembled with MWNTs/PVA/(pq)2Ir(N-phMA) have a good response to inorganic ammonia,were developed on the base of the theory of electrochemiluminescence.In the experiment,the MWNTs/PVA/(pq)2Ir(N-phMA) electrode was used as a working electrodes,platinum wire electrode used as a counter electrode,and Ag / AgCl electrode as a reference electrode,to make for cyclic voltammetry-ECL scan.Scan range of 0.2 ~ 1.8V,scan rate of 100 mv/s,the linear range of 1.8×10-7 ~ 1.0×10-9 mol/L,the detection limit is 1.2×10-13 mol/L.With the range of 0.2 ~ 1.8V,the scan speed of 100 mv/s,the linear range of 1.8×10-7 ~ 1.0×10-9 mol/L.Experimental results show that the ECL response value have good correlation with the extent of meat corruption,and the method can be used to monitor the freshness of meat.