Sensors 2013, 13(12), 15968-15984; doi:10.3390/s131215968
Article

Detection of Off-Flavor in Catfish Using a Conducting Polymer Electronic-Nose Technology

1 USDA Forest Service, Southern Research Station, Center for Bottomland Hardwoods Research, Southern Hardwoods Laboratory, P.O. Box 227, Stoneville, MS 38776, USA 2 USDA Agricultural Research Service, Warmwater Aquaculture Research Unit, Thad Cochran National Warmwater Aquaculture Center, P. O. Box 38, Stoneville, MS 38776, USA
* Author to whom correspondence should be addressed.
Received: 18 October 2013; in revised form: 12 November 2013 / Accepted: 12 November 2013 / Published: 25 November 2013
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Abstract: The Aromascan A32S conducting polymer electronic nose was evaluated for the capability of detecting the presence of off-flavor malodorous compounds in catfish meat fillets to assess meat quality for potential merchantability. Sensor array outputs indicated that the aroma profiles of good-flavor (on-flavor) and off-flavor fillets were strongly different as confirmed by a Principal Component Analysis (PCA) and a Quality Factor value (QF > 7.9) indicating a significant difference at (P < 0.05). The A32S e-nose effectively discriminated between good-flavor and off-flavor catfish at high levels of accuracy (>90%) and with relatively low rates (≤5%) of unknown or indecisive determinations in three trials. This A32S e-nose instrument also was capable of detecting the incidence of mild off-flavor in fillets at levels lower than the threshold of human olfactory detection. Potential applications of e-nose technologies for pre- and post-harvest management of production and meat-quality downgrade problems associated with catfish off-flavor are discussed.
Keywords: artificial olfaction; electronic aroma detection; fish meat quality; volatile organic compounds

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MDPI and ACS Style

Wilson, A.D.; Oberle, C.S.; Oberle, D.F. Detection of Off-Flavor in Catfish Using a Conducting Polymer Electronic-Nose Technology. Sensors 2013, 13, 15968-15984.

AMA Style

Wilson AD, Oberle CS, Oberle DF. Detection of Off-Flavor in Catfish Using a Conducting Polymer Electronic-Nose Technology. Sensors. 2013; 13(12):15968-15984.

Chicago/Turabian Style

Wilson, Alphus D.; Oberle, Charisse S.; Oberle, Daniel F. 2013. "Detection of Off-Flavor in Catfish Using a Conducting Polymer Electronic-Nose Technology." Sensors 13, no. 12: 15968-15984.

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