Aflatoxin in raw walnut kernels marketed in Tehran, Iran.
The occurrence of aflatoxin in 35 samples of raw walnuts, which were randomly collected from Iranian supermarkets in Tehran, was examined. Analysis of aflatoxin was performed by solvent extraction and immunoaffinity clean-up followed by determination using high-performance liquid chromatography with fluorescence detection. Limits of detection (LOD) for the aflatoxins were 0.03-0.25 ng g⁻¹. Limits of quantification (LOQ) were 0.12-0.80 ng g⁻¹. Total aflatoxin concentrations in the samples ranged from 0 to 112.8 ng g⁻¹. About 74.3% of the samples were contaminated with aflatoxins, of which 20.0% exceeded the maximum tolerable limit of 15 ng g⁻¹ set by Codex.
['Imani Nejad|M|M|', 'Farahani|A D|AD|']
D016604:Aflatoxin B1 D000348:Aflatoxins D053000:Analytic Sample Preparation Methods D002273:Carcinogens D002846:Chromatography, Affinity D002851:Chromatography, High Pressure Liquid D005506:Food Contamination D005513:Food Inspection D019983:Guideline Adherence D006291:Health Policy D006293:Health Promotion D006801:Humans D007492:Iran D031324:Juglans D057230:Limit of Detection D009754:Nuts D015203:Reproducibility of Results D013050:Spectrometry, Fluorescence D014944:World Health Organization
aflatoxins walnut HPLC with flourescence cereals and grain