Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 57, Issue 2, Pages 502-507Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2014.02.031
Keywords
Colorimetric sensor array; Classification algorithm; Chicken; Freshness
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Funding
- National Natural Science Foundation of China [31271875]
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This paper attempted to evaluate chicken freshness using a low-cost colorimetric sensor array with the help of a classification algorithm. We fabricated a novel and low-cost colorimetric sensors array, with a specific colorific fingerprint to volatile compounds, using printing chemically responsive dyes on a C2 reverse silica-gel flat plate. In addition, we proposed a novel classification algorithm for sensors data classification - orthogonal linear discriminant analysis (OLDA) and adaptive boosting (AdaBoost) algorithm, namely AdaBoost-OLDA. And we compared it with two classical classification algorithms - linear discriminant analysis (LDA) and back propagation artificial neural network (BP-ANN). Experimental results showed classification results by AdaBoost-OLDA algorithm is superior to BP-ANN and LDA algorithms, the classification results by which are both 100% in the calibration and prediction sets. This study sufficiently demonstrated that the colorimetric sensors array with a classification algorithm has a high potential in evaluating chicken freshness, and AdaBoost-OLDA algorithm has a strong performance in solution to a complex data classification. (C) 2014 Elsevier Ltd. All rights reserved.
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