Optimization of headspace sampling using solid-phase microextraction (SPME) for volatile components in starfruit juice
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 temperatu...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
Federation of Engineering Institutions of Islamic Countries
2006
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| Online Access: | http://psasir.upm.edu.my/id/eprint/39613/1/39613.pdf http://psasir.upm.edu.my/id/eprint/39613/ |
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| Summary: | 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 50oC 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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