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SFU scientists increased the sensitivity of a water toxicity analysis biosensor

Scientists from the Siberian Federal University (SFU) were able to increase the sensitivity of a biosensor capable of analysing water and food products for toxicity, said Maria Kirillova, one of the authors of the study and a junior researcher at the Bioluminescent Biotechnologies Laboratory at the University.
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The core of the biosensor is a module that is coated with enzymes of luminous organisms. The enzymes glow under favourable conditions, but if there are toxins in the environment, the luminescence weakens. One can assess the safety of water or a product by intensity of the glow.

Gold nanoparticles have increased the sensitivity of the sensor. The light emitted during the enzymatic reaction lands on the nanoparticles and is then reflected with an increase in intensity by an order of magnitude.

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