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J Sci Food Agric

Title:		Characterisation of the volatile profile of coconut water from five varieties using an optimised HS-SPME-GC analysis
Author(s):		Prades A; Assa RR; Dornier M; Pain JP; Boulanger R;
Address:		"CIRAD, UMR 95 QUALISUD, F-34398 Montpellier Cedex 5, France. alexia.prades@cirad.fr"
Journal Title:		J Sci Food Agric
Year:		2012
Volume:		20120612
Issue:		12
Page Number:		2471 - 2478
DOI:		10.1002/jsfa.5655
ISSN/ISBN:		1097-0010 (Electronic) 0022-5142 (Linking)
Abstract:		"BACKGROUND: Coconut (Cocos nucifera L.) water is a refreshing tropical drink whose international market has recently been growing. However, little is yet known about its physicochemical composition, particularly its aroma. This study set out to characterise the volatile profile of water from five coconut varieties. RESULTS: Aroma compounds were characterised by headspace solid phase microextraction gas chromatography (HS-SPME-GC) analysis. An experimental design was established to optimise SPME conditions, leading to an equilibration time of 10 min followed by an extraction time of 60 min at 50 degrees C. Accordingly, immature coconut water from WAT (West African Tall), PB121 (MYD x WAT Hybrid), MYD (Malayan Yellow Dwarf), EGD (Equatorial Guinea Green Dwarf) and THD (Thailand Aromatic Green Dwarf) palms was analysed and described. Ketones were mainly present in the Tall and Hybrid varieties, whereas aldehydes were most abundant in the Dwarf palms. Tall coconut water was characterised by a high lactone content. THD exhibited a high ethyl octanoate level. The cluster analysis of the volatile fraction from the five coconut cultivars was found to be related to their genetic classification. CONCLUSION: The volatile compounds of immature coconut water from five varieties were characterised for the first time. Volatile profile analysis could be a useful tool for the selection of Dwarf coconut varieties, which are mainly consumed as a beverage"
Keywords:		"Aldehydes/analysis Beverages Caprylates/analysis Chromatography, Gas Cocos/*chemistry/genetics Fruit/*chemistry Gas Chromatography-Mass Spectrometry Ketones/analysis Lactones/analysis Odorants/*analysis Solid Phase Microextraction Species Specificity Vola;"
Notes:		"MedlinePrades, Alexia Assa, Rebecca Rachel Ablan Dornier, Manuel Pain, Jean-Pierre Boulanger, Renaud eng England 2012/06/14 J Sci Food Agric. 2012 Sep; 92(12):2471-8. doi: 10.1002/jsfa.5655. Epub 2012 Jun 12"