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Related Experiment Video

Updated: May 29, 2026

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Published on: February 14, 2018

Fungicide dissipation curves in winemaking processes with and without maceration step.

M J Fernández1, J Oliva, A Barba

  • 1Departamento de Química Agrícola, Geología y Edafología, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain.

Journal of Agricultural and Food Chemistry
|February 3, 2005
PubMed
Summary
This summary is machine-generated.

Fungicide levels decrease during winemaking. Fludioxonil residues reduced fastest in non-macerated wines, while pyrimethanil persisted longest. Cyprodinil decayed most rapidly during carbonic maceration.

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Area of Science:

  • Agricultural and Food Chemistry
  • Enology
  • Environmental Chemistry

Background:

  • Fungicides are crucial for grape cultivation but can persist into wine.
  • Understanding fungicide dissipation during winemaking is vital for food safety and quality.
  • Different winemaking techniques may influence fungicide residue levels.

Purpose of the Study:

  • To investigate the degradation kinetics of four common fungicides (cyprodinil, fludioxonil, pyrimethanil, quinoxyfen) during various wine production processes.
  • To compare fungicide dissipation rates in wines made with and without maceration.
  • To identify enological steps significantly affecting fungicide residue levels.

Main Methods:

  • Analysis of residual fungicide levels throughout 21-day winemaking processes.
  • Study of traditional red, carbonic maceration, long maceration, low-temperature pre-fermentation, rosé, and white wine elaborations.
  • Quantification of fungicide disappearance curves and decay constants.

Main Results:

  • Fludioxonil showed the fastest reduction in non-macerated (rosé, white) wines.
  • Pyrimethanil exhibited the slowest decrease across most winemaking methods.
  • Cyprodinil displayed a higher decay constant during carbonic maceration compared to other fungicides.

Conclusions:

  • Winemaking techniques, particularly maceration, significantly impact fungicide residue dissipation.
  • Fludioxonil and pyrimethanil show distinct degradation behaviors influenced by enological practices.
  • Carbonic maceration accelerates the decay of cyprodinil, suggesting process-specific fungicide management is necessary.