Yan (2003) patented an encapsulation method that could be used
to enhance the stability of omega-3 lipids. In this method, amulti-core
approach was taken by first encapsulating the omega-3 lipids and
then applying a second shell over the agglomerated encapsulated
lipids. This approach provides a product that has multi-layers of
protection. Currently, Ocean Nutrition Canada uses this technology
under the Powder-loc trademark to produce stable omega-3 encapsulated
powders. The powder that results from this process can
deliver 500–800 mg oil per gram of dry powder. In contrast, 200–
350 mg oil per gram of dried powder is typically delivered for
conventional spray-dried encapsulated powders.