title: Gas chromatography analysis with olfactometric detection (GC-O) as a useful methodology for chemical characterization of odorous compounds.
abstract: The gas chromatography-olfactometry (GC-O) technique couples traditional gas chromatographic analysis with sensory detection in order to study complex mixtures of odorous substances and to identify odor active compounds. The GC-O technique is already widely used for the evaluation of food aromas and its application in environmental fields is increasing, thus moving the odor emission assessment from the solely olfactometric evaluations to the characterization of the volatile components responsible for odor nuisance. The aim of this paper is to describe the state of the art of gas chromatography-olfactometry methodology, considering the different approaches regarding the operational conditions and the different methods for evaluating the olfactometric detection of odor compounds. The potentials of GC-O are described highlighting the improvements in this methodology relative to other conventional approaches used for odor detection, such as sensoristic, sensorial and the traditional gas chromatographic methods. The paper also provides an examination of the different fields of application of the GC-O, principally related to fragrances and food aromas, odor nuisance produced by anthropic activities and odorous compounds emitted by materials and medical applications.
authors: Chemistry Department, University of Bari, via E. Orabona 4, Bari 70126, Italy. gianluigi.degennaro@uniba.it.
authors: Magda
authors: M
authors: Brattoli
authors: Ezia
authors: E
authors: Cisternino
authors: Paolo Rosario
authors: PR
authors: Dambruoso
authors: Gianluigi
authors: G
authors: de Gennaro
authors: Pasquale
authors: P
authors: Giungato
authors: Antonio
authors: A
authors: Mazzone
authors: Jolanda
authors: J
authors: Palmisani
authors: Maria
authors: M
authors: Tutino
mesh_terms: D000818:Animals; D002849:Chromatography, Gas / Q000379:methods*; D006801:Humans; D009812:Odorants / Q000032:analysis*; D064367:Olfactometry / Q000379:methods*; D012903:Smell