Five-year survey of ochratoxin A in processed sultanas from Turkey.
The results of surveillance for ochratoxin A (OTA) in 1885 samples of sultanas taken during five crop years between 1999 and 2003 are reported. The analytical method was based on extraction with methanol + sodium bicarbonate and clean-up by immunoaffinity column chromatography followed by high-performance liquid chromatography with fluorescence detection. The limit of detection for OTA was 0.3 microg kg(-1). The results show that 9.3% of the samples contained no detectable levels of OTA, whereas 0.6% had concentrations exceeding 10 microg kg(-1); the remaining 90.3% had levels within the range 0.3-10 microg kg(-1). The overall mean OTA concentration in the total number of 1885 samples taken was 1.36 +/- 2.91 microg kg(-1); the overall median was calculated as 0.90 microg kg(-1).
Aksoy
U
U
Department of Horticulture, 35100 Bornova, Izmir, Turkey.
Eltem
R
R
Meyvaci
K B
KB
Altindisli
A
A
Karabat
S
S
D002273:Carcinogens / Q000032:analysis; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D005504:Food Analysis / Q000379:methods; D005506:Food Contamination / Q000032:analysis* / Q000706:statistics & numerical data; D006801:Humans; D009183:Mycotoxins / Q000032:analysis; D009793:Ochratoxins / Q000032:analysis*; D014421:Turkey; D027843:Vitis / Q000737:chemistry*
D002273:Carcinogens; D009183:Mycotoxins; D009793:Ochratoxins; C025589:ochratoxin A