non-essential amino acids (1)

A combined project team from Germany, Norway and Ireland have developed a new method based on the δ13C of amino acids (AA) extracted from wild caught, conventionally and organically farmed salmon. This method enables authentication even when there has been rapid developement of alternative feed ingredients such as macroalgae and insects. The team developed a new profiling tool based on amino acid δ13C fingerprints. which was able to discriminate with high-accuracy among wild-caught, organically, and conventionally farmed salmon. The δ13C fingerprints of essential amino acids appear particularly well suited for tracing protein sources, and for example, the substitution of fishmeal with macroalgae was detected at 5% difference level. The non-essential amino acids are useful for tracing lipid origins (terrestrial vs. aquatic).

 

Read the abstract at: Wild v farmed salmon

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