A Scottish fish farm is to be the first in the northern hemisphere to introduce chemical tagging in an attempt to eliminate food fraud.
Loch Duart, a fishery with sites in the Highlands and Outer Hebrides, will roll out technology that can scientifically verify the provenance of its salmon to stop rogue traders passing off lower-quality products as its own.
From February the firm will employ testing techniques originally created to identify human corpses, to analyse trace elements absorbed in its fish that are a telltale sign of where they were produced.
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