Rapid sample preparation method for LC-MS/MS or GC-MS analysis of acrylamide in various food matrices

J Agric Food Chem. 2006 Sep 20;54(19):7001-8. doi: 10.1021/jf061330r.

Abstract

A fast and easy sample preparation procedure for analysis of acrylamide in various food matrices was developed and optimized. In its first step, deuterated acrylamide internal standard is added to 1 g of homogenized sample together with 5 mL of hexane, 10 mL of water, 10 mL of acetonitrile, 4 g of MgSO4, and 0.5 g of NaCl. Water facilitates the extraction of acrylamide; hexane serves for sample defatting; and the salt combination induces separation of water and acetonitrile layers and forces the majority of acrylamide into the acetonitrile layer. After vigorous shaking of the extraction mixture for 1 min and centrifugation, the upper hexane layer is discarded and a 1 mL aliquot of the acetonitrile extract is cleaned up by dispersive solid-phase extraction using 50 mg of primary secondary amine sorbent and 150 mg of anhydrous MgSO4. The final extract is analyzed either by liquid chromatography-tandem mass spectrometry or by gas chromatography-mass spectrometry (in positive chemical ionization mode) using the direct sample introduction technique for rugged large-volume injection.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Acrylamide / analysis*
  • Chromatography, Liquid / methods*
  • Food Analysis / methods*
  • Gas Chromatography-Mass Spectrometry / methods*
  • Indicators and Reagents
  • Magnesium Sulfate
  • Mass Spectrometry / methods*
  • Sensitivity and Specificity

Substances

  • Indicators and Reagents
  • Acrylamide
  • Magnesium Sulfate