Quantification of Sugars and Organic Acids in Biological Matrices Using GC-QqQ-MS

Methods in Molecular Biology
Nirupama Samanmalie JayasingheDaniel Anthony Dias

Abstract

Gas chromatography coupled with triple quadrupole mass spectrometry (GC-QqQ-MS) can be used to accurately quantify endogenous small molecules extracted from biological samples such as plants and human fluids including sera and urine. In order to quantify primary metabolites typically from central carbon metabolism such as sugars from glycolysis and the pentose phosphate pathway; and organic acids involved in the tricarboxylic acid (TCA) cycle; polar endogenous metabolites must be extracted from the samples of interest, chemically derivatized and quantified against a linear calibration curve to a corresponding authentic standard. This chapter describes how to quantify a combination of 48 primary metabolites belonging to classes of sugars, sugar alcohols, sugar acids, sugar phosphates, and organic acids using a robust, optimized, multiple reaction monitoring (MRM)-based GC-QqQ-MS method.

Citations

Jul 15, 2020·The Plant Journal : for Cell and Molecular Biology·Xianhai ZhaoAi-Min Wu

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