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J Agric Food Chem

Title:		Analysis of 2-methylisoborneol and geosmin in catfish by microwave distillation--solid-phase microextraction
Author(s):		Lloyd SW; Grimm CC;
Address:		"Southern Regional Research Center, Agricultural Research Service, U. S. Department of Agriculture, 1100 Robert E. Lee Boulevard, New Orleans, Louisiana 70124, USA. slloyd@nola.srcc.usda.gov"
Journal Title:		J Agric Food Chem
Year:		1999
Volume:		47
Issue:		1
Page Number:		164 - 169
DOI:		10.1021/jf980419x
ISSN/ISBN:		0021-8561 (Print) 0021-8561 (Linking)
Abstract:		"The semivolatile cyclic alcohols 2-methylisoborneol (MIB) and geosmin (GSM) impart muddy or musty flavors to water and food products. A rapid quantitative analytical technique has been developed whereby microwave distillation is used to remove the volatile organic compounds from a lipophilic matrix into an aqueous matrix. Solid-phase microextraction (MD-SPME) is then used to extract and concentrate the analytes, which are then desorbed in the injection port of a gas chromatograph/mass spectrometer (GC/MS) for analysis. Limits of detection are 0.01 microg/kg and limits of quantification are 0.1 microg/kg. MD-SPME is comparable in precision, requires no solvents, and is faster than current methods of analysis. This methodology allows detection of MIB and GSM at concentrations below human sensory thresholds in fish tissue"
Keywords:		Animals Camphanes/*analysis Catfishes Fish Products/*analysis Gas Chromatography-Mass Spectrometry Naphthols/*analysis;
Notes:		"MedlineLloyd, S W Grimm, C C eng 1999/11/24 J Agric Food Chem. 1999 Jan; 47(1):164-9. doi: 10.1021/jf980419x"