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"Comparison of the Performance of Two Different E-Noses in Hops Classification"
A. Lamagna, D. Rodriguez, S. Reich, N. Scoccola, A. Boselli and M. Cerdan
Proc. of the "9th International Symposium on Olfaction and Electronic Nose" (ISOEN '02), Roma, Italy, September 29-October 2, 2002. Eds. A. D'Amico and C. Di Natale.
Proceedings of ISOEN'02, Aracne Editrice S.R.L., Roma (2003) 208-210
ISBN: 88-7999-450-6
Hops, the female inflorescences of the hop plant (Humulus lupulus L.), are used in the brewing industry to add bitterness and aroma to the beer. It suffers a continuous process of deterioration after the crop due to oxidative processes when exposed to ambient air. Thus an early alarm of oxidative processes is an important parameters for the brewing industry. Due to requirements of local beer industries which demand rigorous and yet not very expensive quality control techniques to successfully compete within the beer market, we have studied the feasibility of electronic noses, to perform some of the tasks currently undertaken by conventional gas chromatography. The two aspects we address in this work are the quick discrimination of various types of pellets through their aroma and the detection of departures from the desired aroma due to aging processes or lousy storage.
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