Rapid screening for methylisoborneol in catfish using purge and trap DSITMS

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:61975

Barshick, S A ^[1]; Grimm, C C; Lloyd, S W; Johnsen, P ^[2]

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1. Oak Ridge National Lab., TN (United States)
2. USDA, New Orleans, LA (United States)

The accumulation of earthy-musty off-flavors is a problem confronting the farm raised catfish industry as well as public water suppliers. MIB (2-methylisoborneol) is a common algal metabolite producing a wet musty odor. Quantification of MIB in catfish fillets is complicated by its low human odor threshold of 0.03 ppb in water. In this work, two methods for the analysis of MIB were compared. Purge and trap/gas chromatography/mass spectrometry (P&T/GC/MS) is used to quantify MIB and other off-flavors. A portion of catfish fillet is homogenized with water and purged. The trap is eluted with hexane, which is concentrated for analysis by GC/MS. The time required is nearly 5 hours per sample.

• OSTI ID: 61975
• Report Number(s): CONF-9405234-; TRN: 95:003327-0111
• Resource Relation: Conference: 42. American Society of Mass Spectrometry (ASMS) conference on mass spectrometry and allied topics, Chicago, IL (United States), 29 May - 3 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the 42nd ASMS conference on mass spectrometry and allied topics; PB: 1233 p.
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
55 BIOLOGY AND MEDICINE
BASIC STUDIES
CYCLOALKANES
MASS SPECTROSCOPY
SCREENING
GAS CHROMATOGRAPHY
FISHES