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Updated: Jul 16, 2026
12:25
Isolation and Quantification of Botulinum Neurotoxin From Complex Matrices Using the BoTest Matrix Assays
Published on: March 3, 2014
Summary
Ochratoxin A was detected in all plasma samples, with higher levels in men and during August. This indicates a significant dietary intake of this mycotoxin.
Area of Science:
- Food safety and toxicology
- Analytical chemistry
- Biomonitoring
Context:
- Ochratoxin A (OA) is a common mycotoxin found in various food commodities.
- Human exposure to OA is a public health concern due to its nephrotoxic and potential carcinogenic effects.
- Assessing OA levels in human biological matrices is crucial for understanding exposure and risk.
Purpose:
- To quantify Ochratoxin A (OA) levels in human blood plasma samples.
- To determine the prevalence and concentration of OA in a cohort of individuals.
- To evaluate potential demographic and seasonal variations in OA exposure.
Summary:
- Immunoaffinity column clean-up followed by High-Performance Liquid Chromatography (HPLC) with fluorescence detection was employed.
- The analytical method achieved a detection limit of 0.05 microg/l.
- OA was detected in all 50 plasma samples analyzed, with concentrations ranging up to 7.44 microg/l and a mean level of 1.54 microg/l.
Impact:
- Identified higher OA levels in male subjects compared to females.
- Observed increased OA concentrations during the month of August versus December.
- Estimated a daily dietary intake of 3.03 ng/kg body weight based on mean plasma OA levels.
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