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Food Chem

Title:		Headspace solid-phase microextraction gas chromatography-mass spectrometry determination of volatile compounds in different varieties of African star apple fruit (Chrysophillum albidum)
Author(s):		Lasekan O; Khatib A; Juhari H; Patiram P; Lasekan S;
Address:		"Department of Food Technology, University Putra Malaysia, Serdang, UPM 43400, Malaysia. lasekan@food.upm.edu.my"
Journal Title:		Food Chem
Year:		2013
Volume:		20130524
Issue:		3
Page Number:		2089 - 2097
DOI:		10.1016/j.foodchem.2013.05.081
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"The volatile compounds in four selected African star apple fruit (Chrysophyllum albidum) varieties were isolated and identified using the headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). A total of 59 compounds were identified. Application of the aroma extract dilution analysis (AEDA) to the aroma distillates from the fruits revealed 45 odour-active compounds in the flavour dilution (FD) factor range of 4-128. Among them, the highest odour activities (FD factors) were determined for methylhexanoate, acetophenone and ethyl dodecanoate. Moreover, aroma lipophilicity appears to reflect molecular conformation. Further analysis of the similarities and differences between the fruit varieties in terms of the key odourants by the application of PLS-DA and PLS-regression coefficient showed strong positive correlation between the very sweet/sweet varieties and 10 key odourants. The odourants included ethyl acetate, acetyl methyl carbinol, methylhexanoate, sabinene, p-cymene, methylbenzoate, ethylbenzoate, geraniol, cis-alpha-bergomotene, acetophenone, and ethyl dodecanoate"
Keywords:		Fruit/chemistry/classification Gas Chromatography-Mass Spectrometry/*methods Odorants/analysis Plant Extracts/*chemistry/*isolation & purification Sapotaceae/*chemistry/classification Solid Phase Microextraction/instrumentation/*methods Volatile Organic C;
Notes:		"MedlineLasekan, Ola Khatib, Alfi Juhari, Hanisah Patiram, Parveen Lasekan, Seye eng Evaluation Study England 2013/07/23 Food Chem. 2013 Dec 1; 141(3):2089-97. doi: 10.1016/j.foodchem.2013.05.081. Epub 2013 May 24"