TITLE:
Method Development and Validation for the Quantification of Acrylamide in Potato Chips and Other Locally Available Food by LC-MS/MS in Bangladesh
AUTHORS:
Mala Khan, Md. Moniruzzaman, Mamudul Hasan Razu
KEYWORDS:
LC-MS/MS, Acrylamide, Linearity, Accuracy, Precision, LOD, LOQ
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.10 No.7,
July
31,
2019
ABSTRACT: A sensitive, precise, accurate and simple in house validated Liquid Chromatography
and Tandem mass spectrometric (LC-MS/MS) analytical method was developed for
the quantification of acrylamide in potato chips, a probable carcinogenic and
neurotoxic compound in fried food items. Acrylamide was extracted and cleaned
up by QuEChERS method, then analyzed by triple quadrupole mass spectrophotometer using positive electrospray-ionization mode and d3-Acrylamide internal standard. The analyte and internal standard
were separated on a reversed-phase C18 column (100 × 2.0 mm, 2.5 μm) by gradient elution
with water and methanol containing 0.1% formic acid as mobile phase. The
analytical method was fully validated by assessment of linearity, specificity,
precision, accuracy, selectivity and robustness with relative standard
deviation of less than 4%. The calibration curves were found linear with
correlation coefficient (r2) of 0.9997 over the concentration range
5 - 500 μg/L. The recoveries of
Acrylamide in the concentration of 250, 400, and 500 μg/L were 97% to 104%. Based on the signal to noise ratio, the lower limit of detection (LOD)
and lower limit of quantification (LOQ) were achieved 2.0 μg/L and 4.0 μg/L respectively. The
proposed method was also applied to other available most popular 24 types of food (265 number of sample) first time in Bangladesh. The highest
level of acrylamide has been found in fried products with the range of 197.04
μg/L to 114.63 μg/L, protein-rich food lies between 79.76 to 89.14 μg/L whereas baked
food products exhibited less content in the range of 35.23 to 51.17 μg/L.