Freeze drying, also known as lyophilisation, is a well known technique which extracts water in order to preserve solids. Nowadays, this technique is used to develop novel (bio)-pharmaceuticals and biomaterials.
After the freeze drying procedure is completed, products can be stored at room temperature and generally have a longer shelf-life compared to non-freeze-dried products. In addition, this procedure omits the use of (chemical) conservatives and leaves a smaller carbon-footprint as the need for cold storage facilities is not required.
![Freeze-drying](https://www.emcm.com/user-files/uploads/2018/03/P1000223-1024x1024.jpg)
![Freeze-drying](https://www.emcm.com/user-files/uploads/2018/03/P1000220-1024x1024.jpg)