Assessment of Citrinin in Spices and Infant Cereals Using Immunoaffinity Column Clean-Up with HPLC-Fluorescence Detection

Toxins

Claire Milligan¹  Michael Norris¹  Dave Leeman¹  Phyllis Brown¹  Carol Donnelly¹  Elaine Marley¹  Naomi Mackay¹  Christopher Mair¹ 

[1] R-Biopharm Rhone Ltd., Block 10, Todd Campus, West of Scotland Science Park, Acre Rd., Glasgow G20 OXA, UK;

关键词: mycotoxins;    citrinin;    immunoaffinity;    spices;    infant food;    HPLC-fluorescence;   

DOI  :  10.3390/toxins13100715

来源: DOAJ

【 摘 要 】

Historically, the analysis of citrinin has mainly been performed on cereals such as red yeast rice; however, in recent years, more complex and abnormal commodities such as spices and infant foods are becoming more widely assessed. The aim of this study was to develop and validate clean-up methods for spices and cereal-based infant foods using a citrinin immunoaffinity column before HPLC analysis with fluorescence detection. Each method developed was validated with a representative matrix, spiked at various citrinin concentrations, based around European Union (EU) regulations set for ochratoxin A (OTA), with recoveries >80% and % RSD < 9% in all cases. The limit of detection (LOD) and the limit of quantification (LOQ) were established at 1 and 3 µg/kg for spices and 0.1 and 0.25 µg/kg for infant cereals, respectively. These methods were then tested across a variety of spices and infant food products to establish efficacy with high recoveries >75% and % RSD < 5% across all matrices assessed. Therefore, these methods proved suitable for providing effective clean-up of spices and infant cereals, enabling reliable quantification of citrinin detected. Samples such as nutmeg and infant multigrain porridge had higher levels of citrinin contamination than anticipated, indicating that citrinin could be a concern for public health. This highlighted the need for close monitoring of citrinin contamination in these commodities, which may become regulated in the future.

【 授权许可】

Unknown