Measurement of pork freshness using potentiometric sensor.

This study evaluated pork freshness using potentiometric solid-state electrodes in order to detect chemical indices such as reduced compounds, organic compounds and sulfides, which are produced during the initial stage of putrefaction in meat. Pt, CuS and Ag(2)S electrodes selected as solid-state electrodes have, respectively, been used to detect the organic compounds (regarded as chemical indices of deterioration in meat freshness). The outputs of these electrodes have been analyzed by principal component analysis (PCA) and multiple regression analysis (MRA) in order to find the correlation with the results of viable bacterial counts. By using the potentiometric sensor, the pork freshness was evaluated and the PCA and MRA corresponded to the degree of bacterial increases more simply and rapidly than other methods such as viable bacterial counts or a biosensor.

[1]  Manuela O’Connell,et al.  A practical approach for fish freshness determinations using a portable electronic nose , 2001 .

[2]  Naresh Magan,et al.  Milk-sense: a volatile sensing system recognises spoilage bacteria and yeasts in milk , 2001 .

[3]  Pietro Siciliano,et al.  Monitoring of rancidity of milk by means of an electronic nose and a dynamic PCA analysis , 2001 .

[4]  Pietro Siciliano,et al.  Comparison and integration of arrays of quartz resonators and metal-oxide semiconductor chemoresistors in the quality evaluation of olive oils , 2001 .

[5]  A. Guadarrama,et al.  Discrimination of wine aroma using an array of conducting polymer sensors in conjunction with solid-phase micro-extraction (SPME) technique , 2001 .

[6]  E. Martinelli,et al.  The evaluation of quality of post-harvest oranges and apples by means of an electronic nose , 2001 .

[7]  P. Siciliano.  Preparation, characterisation and applications of thin films for gas sensors prepared by cheap chemical method , 2000 .

[8]  Francesco Tortorella,et al.  Classification of food, beverages and perfumes by WO3 thin-film sensors array and pattern recognition techniques , 2001 .

[9]  J. Brezmes,et al.  Correlation between electronic nose signals and fruit quality indicators on shelf-life measurements with pinklady apples , 2001 .

[10]  F. Winquist,et al.  Discrimination of tea by means of a voltammetric electronic tongue and different applied waveforms , 2001 .

[11]  Y. Asano,et al.  Changes in the concentration of biogenic amines and application of tyramine sensor during storage of beef , 1995 .

[12]  S. Mikkelsen,et al.  Chemometric analysis of square wave voltammograms for classification and quantitation of untreated beverage samples , 2000 .

[13]  T. Kawabata,et al.  POLYAMINE CONTENT IN FRESH AND PROCESSED PORK , 1979 .

[14]  S. Ito,et al.  Flow-injection analysis for hypoxanthine in meat with dissolved oxygen detector and enzyme reactor. , 1996, Talanta.