
Explore the IDX® technology
At Tessenderlo Group, we have developed a patented IDX® technology that offers a new approach to processing animal by-products. This innovation enables the production of high-quality blood and feather meal ingredients with strong market potential, contributing to a more efficient and responsible use of natural resources. The IDX® technology showcases recent advances in processing of animal proteins, in particular by low-impact drying technologies, designed to produce digestible ingredients for pet food and aquafeed. The technology and IP are fully proven: already operational across Akiolis’ factories in France and a few companies have already secured their rights to the patents and trademarks.
Natural ingredients with preserved nutrient quality
The IDX® technology allows the production of highly digestible protein meals and specializes in processing feather and blood proteins. These proteins maintain nutritional value and can be advantageously used as ingredients in aquafeed and pet food formulations, improving their digestibility and fostering healthy growth for fish and pets. Better digestion means the fish and pets produce less waste, specifically less excretion, which reduces environmental impact (for example in the coastal waters).
These features make IDX® premium quality ingredients an efficient cost-in-use solution for aquafeed and pet food formulators.

A technology designed for optimal efficiency
The IDX® technology offers an innovative solution for processing animal-based raw materials, with several key benefits:
- Simultaneous and instant drying & grinding: processes raw materials in seconds without the need for additional milling.
- Enhanced hygiene: minimizes contamination risks with easy sanitization.
- Operational simplicity: user-friendly with straightforward start/stop functions and easy maintenance and cleanability.
- Compact design: easily retrofitted into existing facilities thanks to its small footprint.
These features make IDX® technology a reliable and efficient choice for optimized processing performance.
IDX® Technology in action
The technology can be made available to third parties across the value chain. The technology and IP are fully proven and operational, for example:
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Akiolis - IDX® feather and blood processing plants in Javené (France)
In 2020, an innovative IDX® type feather meal line including Jackering’s Spin Flash Dryer was commissioned. In 2023, an innovative IDX® type blood meal line including Atritor’s Spin Flash Dryer was commissioned. Both operate under licensing from Tessenderlo Group.
Akiolis offers its IDX® premium quality feather and blood meals having best in class digestibility to petfood and aquafeed customers, under the brands Vivaks® and Hydrofaks® respectively. -
Akiolis - IDX® feather processing plant in Rion (France)
In 2024, an innovative IDX® type feather meal line including Atritor’s Spin Flash Dryer (and licensing from Tessenderlo Group) was commissioned. Akiolis offers its IDX® premium quality feather meal having best in class digestibility to petfood and aquafeed customers, under the brands Vivaks® and Hydrofaks® respectively.
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IntermeatFood SRL - Poultry rendering plant, Romania
In 2023, an innovative IDX® type blood meal line including Haarslev’s Spin Flash Dryer and licensing from Tessenderlo Group was selected.