The issue of endocrine disruptors is a subject of debate in the agri-food sector and questioning for consumers through the media. Among these compounds, some of the family of phthalates, are used in the composition of some materials used in wineries. This makes it a worrying issue in terms of image and safety. The objective ok this work was to identify the sources of phthalates and the factors favoring their diffusion in wines to propose preventive and curative solutions to the wine makers. The modalities were therefore selected in different French wine regions to represent the diversity of oenological practices. This survey also led to examine more thoroughly the parameters involved in the situations that favored migration of the highest levels. Additional experiments were performed specifically on certain sources or contributing factors. The first identified sources include epoxy resin, fiberglass reinforced polyester as well as PVC materials (pipes …). Favorable factors include alcohol content, temperature, duration and contact area.
Abstract. Protection of the vineyard against diseases and pests may lead to pesticide residues in the wine. Traces of these active substances, even at concentrations below the legal limits, alarm the consumers and can compromise the potential to sale wines to some markets. A new oenological practice based on the use of selective vegetal fibres for the reduction of pesticide residues in wine is under evaluation by the International Organization of Vine and Wine. This technology, implemented on wine during filtration, is very effective for certain substances and impacts only little the wine quality. A laboratory pilot filtration device has been developed in order to confirm the efficiency of this treatment and its impact on the wine quality before its large-scale use in industrial conditions. This simple device is made of a peristaltic pump and a laboratory filter holder. Several wines with different fibre doses and filtration speeds can be rapidly tested, at bottle scale (75 cl). This pilot filtration device would be a quick and easy tool for the winemakers to evaluate the impact of a filtration on their wines using selective vegetal fibres in terms of efficiency to reduce the pesticide residues, chemical composition and of sensory quality.
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