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J Sci Food Agric

Title:		Determination of the volatile profile of stoned table olives from different varieties by using HS-SPME and GC/IT-MS
Author(s):		Malheiro R; de Pinho PG; Casal S; Bento A; Pereira JA;
Address:		"CIMO/Scholl of Agriculture, Polytechnic Institute of Braganca, Campus Sta Apolonia, Apartado 1172, 5301-854 Braganca, Portugal"
Journal Title:		J Sci Food Agric
Year:		2011
Volume:		20110329
Issue:		9
Page Number:		1693 - 1701
DOI:		10.1002/jsfa.4372
ISSN/ISBN:		1097-0010 (Electronic) 0022-5142 (Linking)
Abstract:		"BACKGROUND: The volatile composition of alcaparras stoned table olives produced from five of the most representative olive cultivars (cv. Cobrancosa, Madural, Negrinha de Freixo, Santulhana and Verdeal Transmontana) from the Tras-os-Montes region (north-east of Portugal) was analytically characterised using headspace-solid phase microextraction/gas chromatography-ion trap-mass spectrometry. RESULTS: Overall, 42 volatile compounds were identified, belonging to distinct chemical classes: 15 aldehydes, seven esters, five alcohols, five sesquiterpenes, four norisoprenoids derivates, three monoterpenes, o ne ketone and two alkenes. Aldehydes were the major chemical class identified in all olive cultivars studied (more than 74% of all the volatile compounds identified). Hexanal, phenylacetaldehyde and (E,E)-2,4-heptadienal were the major volatile compounds identified. CONCLUSIONS: It was possible to discriminate the results obtained from the volatile profile of the five olive cultivars by using principal component analysis. Both qualitative and quantitative fractions of alcaparras table olives were influenced by olive cultivar, which confers a single aroma. This fact certainly influences consumer preference and acceptability towards a specific olive cultivar"
Keywords:		Acetaldehyde/analogs & derivatives/analysis Aldehydes/analysis Alkadienes/analysis Fruit/*chemistry Gas Chromatography-Mass Spectrometry/methods Olea/*chemistry/classification Principal Component Analysis Solid Phase Microextraction/methods Species Specif;
Notes:		"MedlineMalheiro, Ricardo de Pinho, Paula Guedes Casal, Susana Bento, Albino Pereira, Jose A eng England 2011/03/31 J Sci Food Agric. 2011 Jul; 91(9):1693-701. doi: 10.1002/jsfa.4372. Epub 2011 Mar 29"