Document Detail


Headspace sorptive extraction (HSSE), stir bar sorptive extraction (SBSE), and solid phase microextraction (SPME) applied to the analysis of roasted Arabica coffee and coffee brew.
MedLine Citation:
PMID:  11804511     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Headspace sorptive extraction (HSSE) and stir bar sorptive extraction (SBSE), two recently introduced solventless enrichment techniques, have been applied to the analysis of the headspace of Arabica roasted coffee and of the headspace of the brew and of the brew itself. In both HSSE and SBSE enrichment is performed on a thick film of poly(dimethylsiloxane) (PDMS) coated onto a magnet incorporated in a glass jacket. Sampling is done by placing the PDMS stir bar in the headspace (gas phase extraction or HSSE) or by immersing it in the liquid (liquid phase extraction or SBSE). The stir bar is then thermally desorbed on-line with capillary GC-MS. The performance of HSSE and SBSE have been compared through the determination of the recoveries and relative abundances of 16 components of the coffee volatile fraction to classical static headspace (S-HS) and to headspace and in-sample solid phase microextraction (HS-SPME and IS-SPME, respectively) applying the fibers PDMS 100 microm, Carbowax/divinylbenzene 65 microm (CW/DVB), Carboxen/PDMS 75 microm(CAR/PDMS), polyacrylate 85 microm(PA), PDMS/divinylbenzene 65 microm(PDMS/DVB), and Carboxen/divinylbenzene/PDMS 50-30 microm(CAR/PDMS/DVB). In all cases, HSSE and SBSE gave higher recoveries, and this is entirely due to the high amount of PDMS applied.
Authors:
Carlo Bicchi; Cristina Iori; Patrizia Rubiolo; Pat Sandra
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  50     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2002-01-23     Completed Date:  2002-05-23     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  449-59     Citation Subset:  IM    
Affiliation:
Dipartimento di Scienza e Tecnologia del Farmaco, Via Pietro Giuria 9, I-10125 Torino, Italy. bicchi@pharm.unito.it
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MeSH Terms
Descriptor/Qualifier:
Chromatography, Gas / methods*
Chromatography, Liquid / methods*
Coffee / chemistry*
Gas Chromatography-Mass Spectrometry
Reproducibility of Results
Sensitivity and Specificity
Chemical
Reg. No./Substance:
0/Coffee

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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