Journal
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
Volume 27, Issue 3, Pages 261-269Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2008.01.007
Keywords
data processing; flux analysis; gas chromatography; GC-MS; mass spectrometry; metabolite profiling; metabolomics; metabonomics; quality control; statistics
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Funding
- NIEHS NIH HHS [R01 ES013932, R01 ES013932-03, R01 ES013932-02] Funding Source: Medline
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Gas chromatography coupled to mass spectrometry (GC-MS) is one of the most frequently used tools for profiling primary metabolites. Instruments are mature enough to run large sequences of samples; novel advancements increase the breadth of compounds that can be analyzed, and improved algorithms and databases are employed to capture and utilize biologically relevant information. Around half the published reports on metabolite profiling by GC-MS focus on biological problems rather than on methodological advances. Applications span from comprehensive analysis of volatiles to assessment of metabolic fluxes for bioengineering. Method improvements emphasize extraction procedures, evaluations of quality control of GC-MS in comparison to other techniques and approaches to data processing. Two major challenges remain: rapid annotation of unknown peaks; and, integration of biological background knowledge aiding data interpretation. (c) 2008 Elsevier Ltd. All rights reserved.
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