| Background: Acrylamide is a known carcinogenic product that has been found among the
substances such as potato chips which to be processed under the heat-treatment. In order
to extract amounts of acrylamide from fried chips in market, an ultrasound-assisted liquid–
liquid extraction (UA-LLE) technique is proposed. The UA-LLE coupled LLE and
ultrasonication in a single step.
Methods: Chips samples were dissolved in an extracting organic solvent using
ultrasonication to prompt transferring of acrylamide into the organic phase. As a result, the
extraction time and process efficiency were significantly enhanced through increasing the
collision power and mass transfer between grounded chips and organic phase.
Results: Important parameters affecting the extraction efficiency such as kind of organic
solvent and its volume, re-dissolving solvent and pH were optimized. This newly proposed
method has been applied to determine the trace acrylamide in potato chips samples
purchased from local market.
Conclusion: UA-LLE is a handy, economic and time-saving method, with high extraction
yield (over 103% average recovery) and good precision (lower than 15% relative standard
deviation, RSD). Most importantly, it seems this method to be an ideal pre-treatment
method for the extraction of acrylamide in food matrix in food quality control laboratories. |