Analysis of aflatoxins in nonalcoholic beer using liquid-liquid extraction and ultraperformance LC-MS/MS

Journal Article

Wabaidur, Mohammad R. Khan, Zeid A. Alothman, Ayman A. Ghfar, Saikh M. . 2013

• رابط المنشور على الويب: http://onlinelibrary.wiley.com/doi/10.1002/jssc.201200752/abstract
• الوسوم: Aflatoxins, Liquid–liquid extraction, Nonalcoholic beer, UPLC– MS/MS
• المجلة \ الصحيفة: Journal of Separation Science
• رقم الإصدار السنوي: 36
• الصفحات: 572–577

مستخلص المنشور

           Aflatoxins AFB1, AFB2, AFG1, and AFG2 are toxic secondary metabolites produced by
Aspergillus flavus and Aspergillus parasiticus and posses a potential threat to food safety. In
the present work, liquid–liquid extraction and ultraperformance LC-MS/MS method has
been applied for the determination of four naturally occurr ing aflatoxins AFB1, AFB2, AFG1, and AFG2 in nonalcoholic beer. Aflatoxins extraction from nonalcoholic beer was carried out using liquid–liquid extraction procedure. The effects of solvent-types were studied to obtain maximum recovery of the target analytes with minimum contamination. Among different solvents, the aflatoxins extraction was best achieved using ethyl acetate.  The obtained recoveries were ranged from 85 to 96% with good quality parameters: LOD  values between 0.001 and 0.003 ng/mL, linearity of the calibration curve (r2 > 0.999), and repeatability (run-to-run) and reproducibility (day-to-day) precisions with RSDs lower than 5% (n = 5) achieved at 0.50 ng/mL concentration. The optimized liquid–liquid extraction in  combination with ultraperformance LC-MS/MS was applied successfully to the analysis of  AFB1, AFB2, AFG1, and AFG2 aflatoxins in 11 nonalcoholic beers and were detected up to 15.31 ng/L in some of the samples