Colubris explores how plant-based by-products can be turned into new value
How can we make better use of plant-based by-products? That is the central question driving the international PROCAS project, in which Colubris plays an active role. The project explores how cassava, a widely cultivated tropical root, can be transformed into valuable products such as protein powder, fibers, syrup, and even clean water.
Marijn Zwijsen, Process Engineer at Colubris, is closely involved in the project. “The first tests took place at our facilities in Winterswijk, the Netherlands, using sweet cassava from Costa Rica. We then carried out practical trials in Vietnam with local, bitter cassava. These experiments have already provided valuable insights. For instance, we found that it is technically possible to extract proteins. However, the process does require smart steps in pre-treatment, separation, and cooling.”
“The PROCAS project contributes to a circular food chain,
where nothing goes to waste.”
Marijn Zwijsen | Colubris
Fully equipped pilot container
“Right now, a complete pilot installation is being built inside a 40-foot container. It will include a rasper, centrifuges, an ultrafiltration system, and a spray dryer, all food-grade, of course, and fully cooled. Thanks to this modular design, the system can be deployed flexibly and easily relocated to sites anywhere in the world. By the end of 2025, we will begin testing the installation in Vietnam, together with local partners.”
“The best part is that the knowledge we have gained is not only relevant for cassava. The process can also be applied to other plant-based by-products. In this way, we are taking an important step together toward a truly circular food chain.”
PROCAS consortium
In addition to Colubris, the following organizations are part of the PROCAS consortium:
Yenbinh | Vietnam
Yenbinh, also known as Hieu Hung Agricultural Product and Food Processing, is one of the four largest cassava processors and suppliers of tapioca products in Vietnam. One of Yenbinh’s factories in Vietnam is hosting the bioresource tests.
Stamex | Thailand
Stamex is a Dutch group of companies with offices in Thailand and Hong Kong. Since 2005, the company has grown into a leading manufacturer of equipment for the starch processing industry. With its innovative root graters and centrifugal sieves, designed to efficiently separate starch from fiber, Stamex delivers solutions that contribute to high-quality production processes worldwide.
What is Cassava?
Cassava originated in South America and is a starchy, edible root tuber also known as manioc or yuca. The root is nutritious, gluten-free, and can serve as an alternative to potatoes, used in dishes such as fries and porridge, or processed into flour for bread and prawn crackers. It is also widely used in the production of noodles and spring roll wrappers.