Fresh tuna has is a nice red colour, however it quickly turns brown when exposed to the air. Tuna is easier to sell red than brown so those involved in the trade are faced with a temptation to reverse the discolouration. In 2017, an estimated CHF 200 million was made tricking retailers and consumers in […]
Tainted tuna uncovered by food fraud investigation
A european food fraud investigation has uncovered tainted tuna. Tuna destined for canning was illegally treated with chemicals to transform it from brown to red, fooling customers into thinking it was fresh. Fresh tuna sells for twice the price of canned tuna. The chemicals used are carbon monoxide and nitrites, the same substances often used […]
