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Animal origin food products, including fish and seafood, meat and poultry, milk and dairy foods, and other related products play significant roles in human nutrition. However, fraud in this food sector frequently occurs, leading to negative economic impacts on consumers and potential risks to public health and the environment. Therefore, the development of analytical techniques that can rapidly detect fraud and verify the authenticity of such products is of paramount importance.


Traditionally, a wide variety of targeted approaches, such as chemical, chromatographic, molecular, and protein-based techniques, among others, have been frequently used to identify animal species, production methods, provenance, and processing of food products. Although these conventional methods are accurate and reliable, they are destructive, time-consuming, and can only be employed at the laboratory scale. On the contrary, alternative methods based mainly on spectroscopy have emerged in recent years as invaluable tools to overcome most of the limitations associated with
traditional measurements. The number of scientific studies reporting on various authenticity issues investigated by vibrational spectroscopy, nuclear magnetic resonance, and fluorescence spectroscopy has increased substantially over the past few years, indicating the tremendous potential of these techniques in the fight against food fraud.

This manuscript reviews the state-of-the-art research advances since 2015 regarding the use of analytical methods applied to detect fraud in food products of animal origin, with particular attention paid to spectroscopic measurements coupled with chemometric analysis. The opportunities and challenges surrounding the use of spectroscopic techniques and possible future directions are also be discussed.

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In a move that customers have labelled very fishy, the Chinese government has ruled that rainbow trout can now be labelled and sold as salmon.

The seemingly bizarre move comes after complaints earlier this year that rainbow trout was being mislabelled.

In May, media reported that much of what was sold as salmon in China was actually rainbow trout, to widespread consternation from fish-buyers.

But instead of banning vendors from deceiving their customers, the China Aquatic Products Processing and Marketing Alliance (CAPPMA), which falls under the Chinese ministry of agriculture, has ruled that all salmonidae fish can now be sold under the umbrella name of “salmon”, reports the Global Times.

Rainbow trout and salmon are both salmonidae fish and look quite similar when filleted. However, salmon live in salt water and rainbow trout live in fresh water.

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