Kinetic models applied to soluble vitamins delivery systems prepared by spray drying.

The incorporation of bioactive nutrient compounds such as vitamins into food systems can provide a simple way to develop new functional foods. In this work, the controlled release of two vitamins (vitamins B12and C), microencapsulated by a spray-drying process, is studied. With a properly designed controlled-release system, the compounds are released at the desired site and time, and at a desired rate. The main kinetic release models are applied and discussed. Also, the main mechanisms associated to the release were identified. The use of models to predict in vivo bio-performance is an advantage in the development of new products. [ABSTRACT FROM PUBLISHER]