The organic resi- due streams come from local fruit and vegeta- ble processing facilities and are stored in the reactors.
through an ammonium scrubber. Then there are two final steps: drying and evaporation. Chaincraft can produce the ac- ids in powder or liquid form: a powder which is created by drying the product and a liquid product from the evaporator.
C6 and C4 fatty acids as feed additives The final product contains, among other fatty acids, mainly C6 and C4. C4, butyric acid, is a well-known additive that con- tributes to a healthy gut; for instance, it improves gut mor- phology and stimulates the formation of tight junctions. The other main component is C6, Caproic acid, which is an organ- ic acid that is not so well known in the feed industry, accord- ing to Jeroen van Dorp, Business Development Manager: “Caproici acid is a novel ingredient that is traditionally
overlooked for research and use because of its low availability and high price, even though it has excellent antimicrobial properties.” C6 is mostly effective against gram-negative bac- teria, such as salmonella and E. coli and it also combats virus- es by enhancing RNA degradation. Van Dorp: “Bacteria are ef- ficiently combatted as longer MCFAs (>C5) damage the microbes’ cell walls, after which the shorter MCFAs (<C5) can penetrate the cell. In addition, MCFAs also provide protection against various viruses, by affecting the virus coating, causing leakage or total disintegration of the envelope.”
Inside the factory, where the remaining liquid substance is purified, it’s all about downstream processing.
24 ▶ ALL ABOUT FEED | Volume 28, No. 7, 2020
A bright future ahead The company seems to have a bright future ahead. The next step will be to build a new factory, which will increase pro- duction by a factor of ten. Right now, the production of Chaincraft is being scaled up and it is expected to reach 100% utilisation in 2021. According to Van Stralen and Van Dorp they are negotiating with many interested parties from the feed industry. When there are sufficient commercial agree- ments, the company can further increase production via this new build full-scale facility. Although the company is current- ly only producing for the animal feed market, fatty acids can be used for many other applications as well, which presents further opportunities in the future. Van Stralen: “If, for exam- ple, we start making fatty acids for plasticisers, herbicides and coatings, we can also use other lower-value residual flows, which creates new business opportunities. However, the ani- mal feed industry is the first and most important market we are focusing on for our MCFAs.”
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