PMID- 24252650 OWN - NLM STAT- MEDLINE DCOM- 20140527 LR - 20191210 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1321 DP - 2013 Dec 20 TI - Determination of off-flavor compounds, 2-methylisoborneol and geosmin, in salmon fillets using stir bar sorptive extraction-thermal desorption coupled with gas chromatography-mass spectrometry. PG - 133-6 LID - S0021-9673(13)01638-5 [pii] LID - 10.1016/j.chroma.2013.10.038 [doi] AB - A sensitive and solvent-less method for the determination of musty and earthy off-flavor compounds, 2-methylisoborneol (MIB) and geosmin (GSM), in salmon tissue was developed using stir bar sorptive extraction-thermal desorption coupled with gas chromatography-mass spectrometry (SBSE-TD-GCMS). MIB and GSM were solid phase extracted using polydimethylsiloxane (PDMS) coated stir bars, analyzed by gas chromatography, and detected in full scan mode of mass selective detector (MSD). Using this method, the calibration curves of MIB and GSM were linear in the range of 0.3-100ng/L, with a correlation coefficient above 0.999 and RSDs less than 4% (n=4). The limit of detection (LOD, S/N=3, n=6) and limit of quantification (LOQ, S/N=10, n=6) of MIB and GSM were both approximately 0.3 and 1ng/L, respectively. The recoveries of MIB and GSM were 22% and 29% by spike in 30ng/L standard compounds, 23% and 30% by spike-in 100ng/L standard compounds in salmon tissue samples with good precision (<8% of RSDs, n=6), respectively. The recoveries of MIB and GSM were better than reported methodologies using SPME fibres (<10%) in fish tissue samples. This method was successfully applied to monitor and characterize depurated salmon fillet samples (0, 3, 6 and 10 days). CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Ruan, E D AU - Ruan ED AD - Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada. FAU - Aalhus, J L AU - Aalhus JL FAU - Summerfelt, S T AU - Summerfelt ST FAU - Davidson, J AU - Davidson J FAU - Swift, B AU - Swift B FAU - Juarez, M AU - Juarez M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20131016 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Camphanes) RN - 0 (Naphthols) RN - 2371-42-8 (2-methylisoborneol) RN - MYW912WXJ4 (geosmin) SB - IM MH - Animals MH - Camphanes/*analysis MH - Gas Chromatography-Mass Spectrometry/*methods MH - Limit of Detection MH - Naphthols/*analysis MH - *Salmon MH - Seafood/*analysis OTO - NOTNLM OT - Geosmin and 2-methylisoborneol OT - Salmon fillets OT - Stir bar sorptive extraction OT - Thermal desorption coupled with gas chromatography-mass spectrometry EDAT- 2013/11/21 06:00 MHDA- 2014/05/28 06:00 CRDT- 2013/11/21 06:00 PHST- 2013/08/02 00:00 [received] PHST- 2013/10/08 00:00 [revised] PHST- 2013/10/09 00:00 [accepted] PHST- 2013/11/21 06:00 [entrez] PHST- 2013/11/21 06:00 [pubmed] PHST- 2014/05/28 06:00 [medline] AID - S0021-9673(13)01638-5 [pii] AID - 10.1016/j.chroma.2013.10.038 [doi] PST - ppublish SO - J Chromatogr A. 2013 Dec 20;1321:133-6. doi: 10.1016/j.chroma.2013.10.038. Epub 2013 Oct 16.