Method for analysis dried vine fruits contaminated with ochratoxin A.
The EU maximum limit of 10 microg kg(-1) of OTA for dried vine fruits has been established since 2002 (European Commission, 2005). The presented work explore the capability of using Fourier infrared spectroscopy attenuated total reflection (FTIR-ATR) for the detection of ochratoxin A (OTA) in dried vine fruits in a range of concentration between 2 and 50 microg kg(-1) OTA. The method developed included a sample pretreatment using a C18 cartridge which was efficient for the isolation of the mycotoxin. The PLS1 analysis of the spectrum of sultanas spiked with different OTA concentrations showed a good correlation between the spectral data and reference concentration for OTA (R(2)=0.85).
Galvis-Sánchez
Andrea C
AC
Departamento de Química, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
Barros
Antonio S
AS
Delgadillo
Ivonne
I
D002138:Calibration; D003890:Desiccation; D005506:Food Contamination / Q000032:analysis*; D005638:Fruit / Q000737:chemistry*; D009793:Ochratoxins / Q000032:analysis*; D018547:Plant Stems / Q000737:chemistry*; D012996:Solutions
D009793:Ochratoxins; D012996:Solutions; C025589:ochratoxin A