Multiple headspace solid-phase microextraction of ethyl carbamate from different alcoholic beverages employing drying
Chang-Wen Ye1, Xue-Na Zhang, Jiang-Yan Huang
1College of Food Science & Technology, Huazhong Agricultural University, No.1, Shizishan Street, Hongshan District, Wuhan 430070, China.
A new method accurately detects toxic ethyl carbamate (EC) in alcoholic drinks. This multiple headspace solid-phase microextraction (MHS-SPME) technique avoids matrix effects for reliable quantification of EC contamination.
Area of Science:
- Analytical Chemistry
- Food Chemistry
- Environmental Science
Background:
- Ethyl carbamate (EC) is a toxic contaminant found in alcoholic beverages.
- Traditional methods for EC detection can be affected by matrix effects, leading to inaccurate quantification.
- Developing sensitive and reliable analytical methods for EC is crucial for food safety.
Purpose of the Study:
- To develop and optimize a novel analytical method for the accurate determination of ethyl carbamate (EC) in alcoholic beverages.
- To overcome the challenges of matrix effects and low sensitivity in EC analysis.
- To validate the proposed method for routine analysis of EC in various alcoholic products.
Main Methods:
- Multiple headspace solid-phase microextraction (MHS-SPME) coupled with gas chromatography-nitrogen phosphorus detection.
- Development of a novel polyethylene glycol/hydroxy-terminated silicone oil fiber using sol-gel technique.
- Optimization of MHS-SPME conditions using Taguchi's L(16) orthogonal array design and matrix modification with anhydrous sodium sulphate.
Main Results:
- The optimized method achieved a low limit of detection (0.034 mg L(-1)) and high linearity (R(2)=0.9997) in the range of 0.04-100 mg L(-1).
- The method demonstrated excellent reproducibility with a relative standard deviation of 2.19% for replicate samples.
- Analysis of various alcoholic beverages showed no statistically significant difference compared to the standard addition method, confirming accuracy.
Conclusions:
- The proposed MHS-SPME method, utilizing a novel fiber and matrix modification, provides a sensitive, accurate, and reliable approach for EC determination in alcoholic beverages.
- This method effectively avoids matrix effects, offering a significant advantage over existing techniques.
- The validated method is suitable for routine monitoring of ethyl carbamate contamination in the beverage industry.
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