A semiconducting metal-oxide array for monitoring fish freshness

被引:60
作者
Hammond, J
Marquis, B
Michaels, R
Oickle, B
Segee, B
Vetelino, J
Bushway, A
Camire, ME
Davis-Dentici, K
机构
[1] Sensor Res & Dev Corp, Orono, ME 04473 USA
[2] Univ Maine, Dept Elect & Comp Engn, Orono, ME 04469 USA
[3] Univ Maine, Surface Sci & Technol Lab, Orono, ME 04469 USA
[4] Univ Maine, Dept Food Sci & Human Nutr, Orono, ME 04469 USA
基金
美国国家科学基金会;
关键词
fish freshness; SMO; sensor array; food sensing;
D O I
10.1016/S0925-4005(02)00011-4
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An array of semiconducting metal-oxide (SMO) chemiresistive sensors can quantitatively measure the freshness of Atlantic salmon (Salmo salar), haddock (Melanogrammus aeglefinus), and Atlantic cod (Gadus morhua). A variety of SMO films were tested, including films containing oxides of copper and tin, and commercially available tin-based SMO films. Analytical testing of the fish samples was per-formed in conjunction with SMO sensor testing of the volatile gases emitted from the degrading fish. Testing included the use of a sensory evaluation panel and tests incorporating amine colorimetric methods. pH analyses, and bacterial aerobic and anaerobic plate counts. Sensory analysis, trimethylamine (TMA) content. pH, and aerobic and anaerobic plate counts provided results that correlated well with each other and with SMO sensor results, A radial basis function (RBF) neural network was designed and used to classify the day of fish degradation (1-15) from the SMO sensor array response. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:113 / 122
页数:10
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