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J Agric Food Chem

Title:		Comparison of fast gas chomatography-surface acoustic wave (FGC-SAW) detection and GC-MS for characterizing blueberry cultivars and maturity
Author(s):		Du X; Olmstead J; Rouseff R;
Address:		"Citrus Research and Education Center, University of Florida , 700 Experiment Station Road, Lake Alfred, Florida 33850, USA"
Journal Title:		J Agric Food Chem
Year:		2012
Volume:		20120510
Issue:		20
Page Number:		5099 - 5106
DOI:		10.1021/jf300697f
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"A novel analytical method using fast gas chromatography-surface acoustic wave detection (FGC-SAW) was employed to rapidly characterize blueberry volatile profiles according to genotypes and fruit maturity. Fourteen FGC-SAW peaks were observed and 11 peaks were tentatively identified in the 15 s chromatogram. Peak identifications were confirmed by matching retention index values with similar values from GC-MS analyses of the same samples. Eighty peaks were observed in the 40 min GC-MS analysis of identical samples. Principal component analysis (PCA) score plots of FGC-SAW and GC-MS data both differentiated blueberries according to genotype, maturity stage, and harvest date even though FGC-SAW PCA's used far fewer peak area values. PCA plots clearly separated 'FL02-40', 'Snowchaser', 'Jewel', and 'Primadonna' blueberry cultivars into four quarters using two-dimensional PCA projections. FGC-SAW was also successful in differentiating three berry maturity stages in PCA score plots for both 'Jewel' and 'Primadonna' cultivars. FGC-SAW is an effective technique for rapid analysis of major blueberry volatiles, but could not determine many mid- and low-level volatiles as they were often coeluted with higher concentration volatiles"
Keywords:		"Blueberry Plants/*chemistry/genetics Chromatography, Gas/*methods Fruit/*chemistry/*classification/growth & development *Gas Chromatography-Mass Spectrometry Genotype *Sound Species Specificity Volatile Organic Compounds/analysis;"
Notes:		"MedlineDu, Xiaofen Olmstead, James Rouseff, Russell eng Comparative Study Research Support, U.S. Gov't, Non-P.H.S. 2012/05/01 J Agric Food Chem. 2012 May 23; 60(20):5099-106. doi: 10.1021/jf300697f. Epub 2012 May 10"