Journal
FOOD CHEMISTRY
Volume 245, Issue -, Pages 364-370Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.10.093
Keywords
Patulin; Mycotoxins detection; Strawberries; Liquid chromatography; QuEChERS technique
Funding
- European Union from European Regional Development Fund under Operational Programme Development of Eastern Poland [POPW.01.03.00-06-003/09-00]
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This work outlines HPLC coupled with DAD detection for accurate quantification of patulin (mycotoxin) in strawberries. The optimized extraction of fruit samples through the modified QuEChERS technique in acetonitrile acidified with acetic acid (1%, v/v) and citrate-buffered salts followed by dispersive solid phase extraction using a primary secondary amine and graphitized carbon is described. The method presents LOD and LOQ of 1.5 and 5 mu g/kg, respectively and has been validated in strawberry matrix at three concentration levels (5, 10 and 50 mu g/kg), according to SANTE/11945/2015 and the 2002/657/EC Decision requirements. All validated patulin levels show high percentage of patulin recovery. The validation procedure also includes the intermediate precision performed within three successive days in samples spiked with patulin. The developed method was applied for analysis of fresh and frozen strawberries purchased at local markets. Patulin level in analyzed samples was below the level of detection.
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