Portable Electronic Nose Based on Electrochemical Sensors for Food Quality Assessment

被引:115
作者
Wojnowski, Wojciech [1 ]
Majchrzak, Tomasz [1 ]
Dymerski, Tomasz [1 ]
Gebicki, Jacek [2 ]
Namiesnik, Jacek [1 ]
机构
[1] Gdansk Univ Technol, Fac Chem, Dept Analyt Chem, PL-80233 Gdansk, Poland
[2] Gdansk Univ Technol, Fac Chem, Dept Chem & Proc Engn, PL-80233 Gdansk, Poland
关键词
agriculture; meat spoilage; vegetable oil; quality assessment; electronic nose; electrochemical sensors; OLIVE OIL QUANTIFICATION; CHEMICAL-COMPOUNDS; CHEMOMETRIC TOOLS; ADULTERATION; STORAGE; BLENDS;
D O I
10.3390/s17122715
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The steady increase in global consumption puts a strain on agriculture and might lead to a decrease in food quality. Currently used techniques of food analysis are often labour-intensive and time-consuming and require extensive sample preparation. For that reason, there is a demand for novel methods that could be used for rapid food quality assessment. A technique based on the use of an array of chemical sensors for holistic analysis of the sample's headspace is called electronic olfaction. In this article, a prototype of a portable, modular electronic nose intended for food analysis is described. Using the SVM method, it was possible to classify samples of poultry meat based on shelf-life with 100% accuracy, and also samples of rapeseed oil based on the degree of thermal degradation with 100% accuracy. The prototype was also used to detect adulterations of extra virgin olive oil with rapeseed oil with 82% overall accuracy. Due to the modular design, the prototype offers the advantages of solutions targeted for analysis of specific food products, at the same time retaining the flexibility of application. Furthermore, its portability allows the device to be used at different stages of the production and distribution process.
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页数:14
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