Ultrasound is a technology that is emerging as a ‘green and innovative’ technique in the Food sector. It is well-known that ultrasounds have significant effect on the rate of preservation, reducing the microbiological activity (99.9%), the processing times (80%) and costs (20%), eliminating post-treatment of water waste and consuming less energy (30%), but still not fully applied within the fish processing industry. Thus, ULTRAFISH will materialise this opportunity. Moreover, differently from other novel processing techniques as microwaves or gamma radiation, sound waves are considered safe, non-toxic and environment-friendly. In comparison with pasteurisation, ultrasounds can achieve similar antimicrobial effects but at low temperatures, which is perfect for fish products as they need to maintain freezing temperatures. The application of ultrasound to fish products can be then an advantage since its preservative effects allow more optimal use of fish products throughout the whole supply chain, increasing their quality and commercial shelf life up to 12 days.
The main goals for ULTRAFISH are:
Apply an environment-friendly technology: safe and non-toxic equipment, fully automated and reliable.
Increase production capacity by 35%: processing times will be reduced by 3-4 days allowing 12 extra processing cycles. Fish products will be quicker processed and therefore purchased onto the market.
Water will be reused at least 4 times, which in turn will save 6.5 million litres per year of water waste.
Longer marketability time: shelf life will be increased from 7 days to 10-12 days, enabling better acces to new geographical markets at far distances (Asia, USA).
Lower processing costs: energy and water consumption will be reduced between 30-50%, as well as the use of additives and extra disinfection treatments, which in turn will reduce the overall production cost of fish products by 20%.
Finished product will have a clean label thanks to the reduction/elimination of additives. This will contribute to access markets with stricter regulations, like UK.