The German group announced plans to buy Napro in May and said that it is developing new solutions to aid the use of its omega-3 oils in foods.
The financial details of the transaction have not been disclosed.
"Now that the ink is dry we are working diligently to fully integrate omega-3s into Cognis' product mix so we can effectively address the strong interest expressed by customers and prospects," said Dave Eckert, VP of Cognis Nutrition & Health.
Eckert said that the Napro integration is a high priority, given the demand for omega-3.
Market research indicates that the global marine oil market is set to grow at a rate of 13 per cent per annum to be worth $993m in 2010. The predicted EU growth rate is 6 per cent per annum. Concentrates, such as Napro's ethyl ester and triglyceride forms, are said to lead the category.
Cognis has said that the buy is the next step in its corporate strategy to grow in step with new health trends. Especially in light of research into their heart health benefits, omega-3s seen as a perfect complement to Cognis' existing offerings in the health arena, which include cholesterol-lowering Vegapure plant sterols and sterol esters.
