Freeze Drying Process

Cultech Ltd has a processing technology that converts nutritional oils and other lipid-soluble nutrients into emulsified and freeze-dried, free flowing powder forms that are instantaneously and completely water dispersible. These very stable powders can be used for a multitude of applications, from hard shell encapsulation, tabletting and powdered drink formulations to functional foods, infant formula and food fortification.

The Process

The process converts nutritional oils into a completely water-miscible emulsion in which the microscopically small oil droplets are micro encapsulated with oligosaccharides.

The emulsion, produced without the need for solvents, is then freeze-dried under vacuum at a temperature ranging between -20°C to -30°C. This enables the oil to be locked into the oligosaccharides matrix without any risk of heat or oxidative damage to the oil.

After the drying cycle has finished the end product is a completely water-dispersible, free flowing powder suitable for various food and nutriceutical applications.


This patent approved process has been applied to a great number of different substances, ranging from essential fatty acids such as fish oil, evening primrose oil, borage oil, linseed (flaxseed) oil and olive oil, antioxidants such as vitamin E, beta-carotene, CoQ10, lutein and lycopene – to essential oils such as oregano, lemon, cinnamon, peppermint and spearmint.

However, this is by no means an exhaustive list.