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J Sci Food Agric

Title:		Distribution of aroma volatile compounds in tangerine hybrids and proposed inheritance
Author(s):		Miyazaki T; Plotto A; Goodner K; Gmitter FG;
Address:		"Institute of Food and Agricultural Sciences, University of Florida, Citrus Research and Education Center, Lake Alfred, FL 33850, USA"
Journal Title:		J Sci Food Agric
Year:		2011
Volume:		20101027
Issue:		3
Page Number:		449 - 460
DOI:		10.1002/jsfa.4205
ISSN/ISBN:		1097-0010 (Electronic) 0022-5142 (Linking)
Abstract:		"BACKGROUND: With the desirable combination of sugars and acids, volatile compounds contribute to the essential organoleptic attributes of citrus. This study evaluated the aroma volatiles of 20 tangerine hybrids of the University of Florida breeding program. Volatiles were sampled from hand-squeezed juice by headspace solid-phase microextraction (SPME), and analyzed by gas chromatography-mass spectrometry. Principal component analysis (PCA) and cluster analysis (CA) were used to find similarities among samples due to volatile composition with effect of genetic background. RESULTS: In total, 203 volatiles were detected in all samples. Volatiles in lower amounts were widely distributed among samples and were classified mainly as terpene hydrocarbons and oxygenated compounds, such as aldehydes, esters, alcohols and ketones. PCA, based on relative peak areas (content) clearly separated the samples higher in volatile content, mainly those with sweet orange genetic contributions in their background. CA, based on volatile presence/absence, grouped samples into five clusters, each showing distinctive volatile profiles. CONCLUSION: The genetic background of tangerine hybrids affected volatile composition and content of samples. In general, tangerines were characterized by fewer volatiles (in both quality and quantity) and more aldehydes, and hybrids with sweet orange in their background had more sesquiterpenes and esters, which would likely affect their aroma"
Keywords:		"Citrus/*chemistry/genetics Cluster Analysis Fruit/*chemistry Gas Chromatography-Mass Spectrometry/methods *Hybridization, Genetic Odorants/*analysis Oxygen Compounds/analysis Principal Component Analysis Terpenes/analysis Volatile Organic Compounds/*analy;"
Notes:		"MedlineMiyazaki, Takayuki Plotto, Anne Goodner, Kevin Gmitter, Fred G Jr eng England 2011/01/11 J Sci Food Agric. 2011 Feb; 91(3):449-60. doi: 10.1002/jsfa.4205. Epub 2010 Oct 27"