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Photonics to help dairy industry with new 5-minute scan

A new optical sensor that can check the presence of contaminants in milk and produce a detailed reading in 5 minutes, could dramatically reduce costs, wastage and antibiotic use linked to the production, quality control, and processing phases in the dairy industry.

Scanning milk for 2 proteins and 10 contaminants simultaneously, the optical sensor will take measurements directly on-site at each point of the long and logistically-spread milk value chain.

Delivering a detailed reading in about 5 minutes, the sensor can look for any antibiotics ingested by the cows that have been transmitted to the milk. Using the collected information, companies can prevent contaminants, such as antibiotics and aflatoxin, from entering the food chain.

Across dairy farms today standard tests take days to perform, whereas this new palm-sized sensor will be the easiest way to check the presence of milk components (such as kappa-casein proteins) that are quality parameters for milk and other dairy products.

The same readout can help prevent food poisoning outbreaks like Staphylococcal enterotoxins (SEs) while at the same time predicting milk quality (Kappa Casein) and cow health (lactoferrin).

“With this sensor system”, says project coordinator Stefano Toffanin, researcher at the Italian National Research Council (CNR) in Bologna, “farmers will be given an insight to understand the health of their cows, dairies will be able to make instant judgements about the contaminants in milk and processors can keep an eye on quality control.”

“Our sensor is a multi-parameter tool, based on innovative nano-photonic technologies. It is designed for detecting milk contaminants, and provides an inexpensive, early warning system. This will help the entire dairy industry to save time, millions of Euros and gallons of wastage,” said Toffanin.

Typically, a number of checks are required at nearly every stage of the production process to avoid any possible contamination of dairy products delivered to consumers, with samples often needing to be taken and sent away to a laboratory.

However with the new sensor system, milk samples can be analyzed by both technicians at the dairy plant level and farm-based users who are not experts, within a 5-minute period.

“The ability to monitor milk cheaply and regularly at point-of care means farmers and National Official Control Body can build up a data profile for animals, tracking health. Earlier intervention by famers and veterinarians can lead to prudent use of antimicrobials and an overall reduction of their use.” Toffanin said.

Used as an offline, hand-held tool by non-specialists and technicians alike, the miniaturised sensor system can be integrated into a milking machine for inline detection.

Milk-processors check food-safety parameters upon delivery. When a batch is found to be contaminated, the processors must reject and destroy the product leading to serious financial losses for farmers.

“The innovative milk sensor system can be a valuable tool when implemented throughout the entire dairy supply chain. It contributes to contamination-free milk and dairy products, as well as significantly reducing waste and economic losses.”

Going by the acronym ‘MOLOKO’, the consortium developing the sensor system expects to have a prototype ready in 3 years. MOLOKO is a Photonics Public Private Partnership project thatsecured €6 million of EC fundingvia the Horizon 2020work programme.

Participants from eight EU and associated countries include: Consiglio Nazionale delle Ricerche (CNR), Plasmore SRL, Istituto Superiore di Sanità, Parmalat Spa, Milkline SRL (Italy); Stichting Wageningen Research (Netherlands);Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V (Germany); Quadrachem Laboratories Limited (United Kingdom); Bewarrant (Belgium); nemzeti élelmiszerlánc-biztonsági hivatal – The National Foodchain Safety Office (Hungary); Teknologian tutkimuskeskus VTT Oy (Finland); CSEM Centre Suisse D’Electronique et de Microtechnique SA – Recherche et Developpement – the Swiss Center for Electronics and Microtechnology (Switzerland).

Author
Neil Tyler

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