Microencapsulation of minerals with vegetable oil coatings

Sunflower oil and rapeseed oil are the new coating materials to protect Mineral Salts, especially Iron salts.

The coating process of Mineral Salts, especially of Iron Salts can be done with different coating materials. Dr. Paul Lohmann®, your expert for tailor-made Minerals, offers sustainable produced hydrogenated or non-hydrogenated palm oil as standard coating materials. Now the product range is extended with sunflower oil and rapeseed oil. Both oils are fully hydrogenated and tasteless and offer the same taste-masking effects like the common palm oil.

The alternative coating materials show a better heat stability compared to the palm oil encapsulation. Temperature controlled release experiments show a release from the palm oil encapsulated product between 50 and 60 °C, whereas the release from sunflower and rapeseed oil encapsulated products starts at 60 °C. This allows the selection of the most suitable product, depending on the final application.

Drug release experiments in simulated gastric juice show a very similar releasing behavior of the different coating materials. The non-encapsulated product is completely dissolved after 20 minutes. The release rate from the encapsulated products is below 10 % after 100 minutes.