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J Chromatogr A

Title:		Headspace-solid phase microextraction coupled to gas chromatography-combustion-isotope ratio mass spectrometer and to enantioselective gas chromatography for strawberry flavoured food quality control
Author(s):		Schipilliti L; Dugo P; Bonaccorsi I; Mondello L;
Address:		"Dipartimento Farmaco-chimico, Facolta di Farmacia, Universita di Messina, Viale Annunziata, 98168 Messina, Italy"
Journal Title:		J Chromatogr A
Year:		2011
Volume:		20110730
Issue:		42
Page Number:		7481 - 7486
DOI:		10.1016/j.chroma.2011.07.072
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		"Authenticity assessment of flavoured strawberry foods was performed using headspace-solid phase microextraction (HS-SPME) coupled to gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS). An authenticity range was achieved, investigating on the carbon isotope ratio of numerous selected aroma active volatile components (methyl butanoate, ethyl butanoate, hex-(2E)-enal, methyl hexanoate, buthyl butanoate, ethyl hexanoate, hexyl acetate, linalool, hexyl butanoate, octyl isovalerate, gamma-decalactone and octyl hexanoate) of organic Italian fresh strawberries. To the author's knowledge, this is the first time that all these components were investigated simultaneously by GC-C-IRMS on the same sample. The results were compared, when applicable, with those obtained by analyzing the HS-SPME extracts of commercial flavoured food matrices. In addition, one Kenyan pineapple and one fresh Italian peach were analyzed to determine the delta(13)C(VPDB) of the volatile components common to strawberry. The delta(13)C(VPDB) values are allowed to differentiate between different biogenetic pathways (C(3) and CAM plants) and more interestingly between plants of the same CO(2) fixation group (C(3) plants). Additional analyses were performed on all the samples by means of Enantioselective Gas Chromatography (Es-GC), measuring the enantiomeric distribution of linalool and gamma-decalactone. It was found that GC-C-IRMS and Es-GC measurements were in agreement to detect the presence of non-natural strawberry aromas in the food matrices studied"
Keywords:		Ananas/chemistry Carbon Isotopes/analysis Flavoring Agents Food Analysis/*methods Fragaria/*chemistry Gas Chromatography-Mass Spectrometry/*methods Odorants/*analysis Prunus/chemistry Solid Phase Microextraction/*methods Stereoisomerism Volatile Organic C;
Notes:		"MedlineSchipilliti, Luisa Dugo, Paola Bonaccorsi, Ivana Mondello, Luigi eng Research Support, Non-U.S. Gov't Netherlands 2011/08/30 J Chromatogr A. 2011 Oct 21; 1218(42):7481-6. doi: 10.1016/j.chroma.2011.07.072. Epub 2011 Jul 30"