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Published on: January 2, 2015
Study of tau-fluvalinate persistence in honey
A D Tsigouri1, U Menkissoglu-Spiroudi, A Thrasyvoulou
1Institute of Veterinary Research of Athens, National Agricultural Research Foundation, Neapoleos 25, Aghia Paraskevi, 15310 Attiki, Greece.
Pest Management Science
|May 26, 2001
Summary
The acaricide tau-fluvalinate is highly stable in honey for over 8 months, even at elevated temperatures. This long persistence raises concerns about potential honey contamination from repeated pesticide applications.
Area of Science:
- Food Chemistry
- Pesticide Residue Analysis
- Apiculture Science
Background:
- Tau-fluvalinate is a widely used acaricide in apiculture.
- Understanding its persistence in honey is crucial for food safety and consumer health.
- Factors influencing tau-fluvalinate degradation in honey require thorough investigation.
Purpose of the Study:
- To investigate the persistence and degradation of tau-fluvalinate in honey over time.
- To identify factors affecting tau-fluvalinate stability, including pH and temperature.
- To develop and validate a method for accurate determination of tau-fluvalinate residues in honey.
Main Methods:
- Honey samples with varying pH were spiked with tau-fluvalinate and incubated at 35°C for up to 248 days.
- A C8 Solid Phase Extraction (SPE) method was used for sample cleanup.
- Gas Chromatography with Electron-Capture Detection (GC-ECD) was employed for quantitative analysis.
Main Results:
- Tau-fluvalinate demonstrated remarkable stability in honey for over 8 months at 35°C.
- No significant degradation was observed even after heat treatment simulating honey processing conditions.
- The developed GC-ECD method achieved high recovery (90.25%) and a low limit of determination (1 µg kg⁻¹).
Conclusions:
- Tau-fluvalinate exhibits long-term stability in honey, independent of pH and typical processing temperatures.
- The extended persistence of tau-fluvalinate in honey poses a risk of accumulation and contamination.
- Further research is needed to establish safe residue limits and mitigate contamination risks.
