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Corsica blue wine has become a party favorite this summer, but it seems that the curious "sea wine" blue is less natural than it says on the box, local authorities launched Wednesday an investigation into tagging practices doubtful.
The fury began a few weeks ago when chemistry students from the University of Toulouse, eager to discover the secret identity of the ingredient responsible for the blue coloring of the wine, discovered the presence of E133, the synthetic dye used to color curacao.
The discovery of E133, also known as Brilliant Blue FCF, was made in two popular blue wine labels, Imajyne and Vindigo – which are Spanish but are also sold in France.
Although the producers of Vindigo did not comment, the people behind Imajyne deny that their product is anything but natural.
"We do not use the E133, it's not the same thing as curaçao or Vindigo," says Sylvain Milanini, CEO of the Corsican estate Pozzo di Mastri.
Milanini, whose wine is in production since 2017, insists that the blue color is the result of a fermentation process involving salt, spirulina (a type of seaweed) and marine yeasts . The details of the process are secret and are the subject of a patent.
In their study, published in the European journal Food Research and Technology, students found average concentrations of 8.62 and 5.46 mg / L of E133 in both Vindigo and Imajyne. The wines did not contain Spirulina, a naturally blue dye.
On the back of the study, the Ajaccio attorney said that he was currently investigating the use of the word "wine" to market Imajyne, knowing that the use of dyes is contrary to French wine regulations.
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