NDLI: Evaluation of solid-phase micro-extraction coupled to gas chromatography-mass spectrometry for the headspace analysis of volatile compounds in cocoa products.

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Evaluation of solid-phase micro-extraction coupled to gas chromatography-mass spectrometry for the headspace analysis of volatile compounds in cocoa products.

Content Provider	Semantic Scholar
Author	Ducki, Sylvie Miralles-Garcia, Javier Zumbé, Albert Tornero, Antonio Clemente Fernández Storey, David M.
Copyright Year	2008
Abstract	The aroma profile of cocoa products was investigated by headspace solid-phase micro-extraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC-MS). SPME fibers coated with 100 microm polydimethylsiloxane coating (PDMS), 65 microm polydimethylsiloxane/divinylbenzene coating (PDMS-DVB), 75 microm carboxen/polydimethylsiloxane coating (CAR-PDMS) and 50/30 microm divinylbenzene/carboxen on polydimethylsiloxane on a StableFlex fiber (DVB/CAR-PDMS) were evaluated. Several extraction times and temperature conditions were also tested to achieve optimum recovery. Suspensions of the samples in distilled water or in brine (25% NaCl in distilled water) were investigated to examine their effect on the composition of the headspace. The SPME fiber coated with 50/30 microm DVB/CAR-PDMS afforded the highest extraction efficiency, particularly when the samples were extracted at 60 degrees C for 15 min under dry conditions with toluene as an internal standard. Forty-five compounds were extracted and tentatively identified, most of which have previously been reported as odor-active compounds. The method developed allows sensitive and representative analysis of cocoa products with high reproducibility. Further research is ongoing to study chocolate making processes using this method for the quantitative analysis of volatile compounds contributing to the flavor/odor profile.
File Format	PDF HTM / HTML
DOI	10.1016/j.talanta.2007.08.034
PubMed reference number	18371766
Journal	Medline
Volume Number	74
Issue Number	5
Alternate Webpage(s)	http://www.worldcocoafoundation.org/wp-content/uploads/files_mf/ducki2008.pdf
Journal	Talanta
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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