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J Agric Food Chem

Title:		Determination of volatile organic compound patterns characteristic of five unifloral honey by solid-phase microextraction-gas chromatography-mass spectrometry coupled to chemometrics
Author(s):		Baroni MV; Nores ML; Diaz Mdel P; Chiabrando GA; Fassano JP; Costa C; Wunderlin DA;
Address:		"Universidad Nacional de Cordoba-CONICET, Facultad de Ciencias Quimicas, Dto. Bioquimica Clinica-CIBICI, Medina Allende y Haya de la Torre, Ciudad Universitaria, 5000 Cordoba, Argentina"
Journal Title:		J Agric Food Chem
Year:		2006
Volume:		54
Issue:		19
Page Number:		7235 - 7241
DOI:		10.1021/jf061080e
ISSN/ISBN:		0021-8561 (Print) 0021-8561 (Linking)
Abstract:		"We report the evaluation of the floral origin of honey by analysis of its volatile organic compounds (VOCs) profile, joined with the use of combined pattern recognition techniques. Honey samples, from five floral origins, were analyzed by headspace solid-phase microextraction-gas chromatography-mass spectrometry, selecting 35 VOCs out of the entire profiles, which were analyzed by hierarchical cluster analysis (HCA), stepwise discriminant analysis (SDA), and K-nearest-neighbor (KNN). Both HCA and SDA were used as exploratory tools to select a group of VOCs representing similitude and differences among studied origins. Thus, six out of 35 VOCs were selected, verifying their discriminating power by KNN, which afforded 93% correct classification. Therefore, we drastically reduced the amount of compounds under consideration but kept a good differentiation between floral origins. Selected compounds were identified as octanal, benzeneacetaldehyde, 1-octanol, 2-methoxyphenol, nonanal, and 2-H-1-benzopyran-2-one. The analysis of VOC profiles, coupled to HCA, SDA, and KNN, provides a feasible alternative to evaluate the botanical source of honey"
Keywords:		1-Octanol/analysis Aldehydes/analysis Coumarins/analysis *Flowers Gas Chromatography-Mass Spectrometry/*methods Guaiacol/analysis Honey/*analysis/*classification Volatilization;
Notes:		"MedlineBaroni, Maria Veronica Nores, Maria Laura Diaz, Maria del Pilar Chiabrando, Gustavo Alberto Fassano, Juan Pablo Costa, Cristina Wunderlin, Daniel Alberto eng Research Support, Non-U.S. Gov't 2006/09/14 J Agric Food Chem. 2006 Sep 20; 54(19):7235-41. doi: 10.1021/jf061080e"