Optimization of headspace sampling using solid–phase microextraction (SPME) for volatile components in starfruit juice
Abdullah, Abdul Ghani Liew (2011) Optimization of headspace sampling using solid–phase microextraction (SPME) for volatile components in starfruit juice. Journal of Industrial Research & Technology, 1 (1). pp. 32-39. ISSN 2229-9467
Official URL: http://www.hgpub.com/ojs2/index.php/jirt/article/v...
Volatiles are important flavor compounds of fruit juices and beverages. In this study, a headspace Solid-phase microextraction (SPME) gas chromatography-mass spectrometry (GC-MS) was used to analyze volatile components in starfruit juices. Several experimental parameters (e.g. adsorption temperature, adsorption time and sample volume) were optimized to improve sampling efficiency in two aspects; maximum adsorption and selective adsorption of volatile components onto SPME fiber. The following conditions was found to be optimal for selectivity and sensitivity: adsorption temperature of 50°C for 30 min with a 65 μm divinylbenzene/polydimethylsiloxane (DVB/PDMS) coated fiber with and sample volume of 15 g in a 30 ml vial. The proposed technique could be applied for the analysis volatile compounds that contribute to starfruit juices flavor in different cultivars and also their ripening stages.
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