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J Agric Food Chem

Title:		"GC-MS Metabolite Profiling of Extreme Southern Pinot noir Wines: Effects of Vintage, Barrel Maturation, and Fermentation Dominate over Vineyard Site and Clone Selection"
Author(s):		Schueuermann C; Khakimov B; Engelsen SB; Bremer P; Silcock P;
Address:		"Department of Food Science, University of Otago , P.O. Box 56, Dunedin, New Zealand. Spectroscopy and Chemometrics Group, Department of Food Science, University of Copenhagen , Rolighedsvej 26, DK-1958 Fredriksberg C, Denmark"
Journal Title:		J Agric Food Chem
Year:		2016
Volume:		20160308
Issue:		11
Page Number:		2342 - 2351
DOI:		10.1021/acs.jafc.5b05861
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Wine is an extremely complex beverage that contains a multitude of volatile and nonvolatile compounds. This study investiged the effect of vineyard site and grapevine clone on the volatile profiles of commercially produced Pinot noir wines from central Otago, New Zealand. Volatile metabolites in Pinot noir wines produced from five grapevine clones grown on six vineyard sites in close proximity, over two consecutive vintages, were surveyed using gas chromatography-mass spectrometry (GC-MS). The raw GC-MS data were processed using parallel factor analysis (PARAFAC2), and final metabolite data were analyzed by principal component analysis (PCA). Winemaking conditions, vintage, and barrel maturation were found to be the most dominant factors. The effects of vineyard site and clone were mostly vintage dependent. Although four compounds including beta-citronellol, homovanillyl alcohol, N-(3-methylbutyl)acetamide, and N-(2-phenylethyl)acetamide discriminated the vineyard sites independent of vintage, Pinot noir wines from different clones were only partially discriminated by PCA, and marker compound selection remained challenging"
Keywords:		*Fermentation Food Handling/*methods Fruit/chemistry *Gas Chromatography-Mass Spectrometry Metabolomics New Zealand Vitis/chemistry/genetics Volatile Organic Compounds/*analysis Wine/*analysis Gc-ms Parafac2 Pinot noir Voc clone vineyard site vintage vola;
Notes:		"MedlineSchueuermann, Claudia Khakimov, Bekzod Engelsen, Soren Balling Bremer, Phil Silcock, Patrick eng 2016/02/10 J Agric Food Chem. 2016 Mar 23; 64(11):2342-51. doi: 10.1021/acs.jafc.5b05861. Epub 2016 Mar 8"