UZWIL, SWITZERLAND — With the recent opening of its Protein Application Center in partnership with endeco, Bühler has completed the technology solutions necessary to go from pulses or grains to finished consumer products.

Customers will be able to develop and validate their ideas in protein processing to produce plant-based foods, such as meat substitutes and beverages. A topic of growing importance is to maximize the value of the side streams generated in the food industry and the application center brings unique technology solutions to address this.

“Bühler has been striving to offer customers a complete range of solutions in the field of protein,” said Andreas Risch, head of business unit special grains and pulses at Bühler. “With the new center, we have taken a major step and can increase impact in terms of efficiency, sustainability, and food safety. Now we can confidently tell our prospective customers that they can bring their raw material like peas, or beans, and together, we will develop a juicier burger, tastier bar, better and authentic cheese or beverage.”

The 300-square-meter Protein Application Center offers customers testing facilities on a small and larger scale. Customers can test their ideas on a small, flexible processing line with capacity of 1 kilogram per hour, can also validate their ideas on the industrial-size production line with an infeed capacity of 200 kg/h, optimizing the manufacturing process to scale production. In both processing lines, a wide variety of raw materials, such as pulses, grains, and other protein sources, can be split into their major components — protein, starch, and fiber.

Bühler and endeco have made rapid progress in their partnership, officially announced in 2022. Endeco has spent almost two decades building the process for what used to be a niche, protein isolation. Now, the process is successfully integrated into Bühler's Application & Training Center.

The Protein Application Center offers two different processes of protein isolation. The classical means of protein isolation is based on an isoelectric precipitation process and realized with the use of decanter centrifuges. Flottweg, a company that has been developing and producing high-performance decanter centrifuges, separators, and plants for solid-liquid separation for more than 60 years, is Bühler’s partner for that technology.  

An alternative process of protein isolation is membrane fractionation. Swiss company MMS, another technology partner at the Protein Application Center, brings a strong track record of solving complex separation and fractionation challenges in the food and bio pharma industries. Its expertise in membrane technology enables the production of components with superior functionality, sensory, and nutritional benefits.  

The membrane isolation using ultrafiltration technology available at the center allows the separation of valuable parts without denaturation or loss of properties of the native ingredients. This leads to the production of highly functional proteins while having an increased yield and purity.

Customers also can test processes and develop new products in dairy alternatives, such as vegan drinks, yogurts, and cheeses, in a dairy application line, part of the small testing facility. In addition, the valorization of the co-produced side streams of starch and fiber will be a major research topic in the new test center.   

“The Protein Application Center brings together vanguard technologies and a team of experts who know the customers’ needs and challenges,” said Tom Heintel, head of the Protein Application Center. “Together, we can support customers to develop groundbreaking products, and keep succeeding in their markets.”

The Protein Application Center operates in collaboration with the other Application & Training Centers of Bühler’s food innovation hub in Uzwil.  In the upstream stage, the Protein Application Center collaborates with Bühler’s Grain Innovation Center (GIC), where the customer can test and develop cleaning, sorting, grinding, sifting, and dry fractionation process technologies for multiple grains and seeds, such as wheat, durum, rye, corn, and pulses. At the GIC, dry processing technology to generate protein concentrates will be available to customers after the facility’s renovation is completed, by the end of 2024.  

The unique combination of the Protein Application Center and the Extrusion Application Center enables the direct connection from wet-separated proteins into an extrusion system. This helps to find novel and more sustainable processing solutions from the field to the fork, with the development of delicious veggie burgers, vegetarian chicken chunks or nuggets, and much more.