Biopolymers and Bioplastics

Biography

Biography: Johan Pluyter

Abstract

The use of microcapsules in fragrance has since 2006 become a key technology in home care (fabric softeners and detergents) and personal care (antiperspirants/deodorants) to enable efficient delivery of fragrances during the product use. The aim here is to obtain performance benefits such as a longer lasting release of the fragrance, a higher quality longer lasting fragrance (lasting freshness), and fragrance release during handling of wet and dry fabrics, release of fragrance during enhanced physical activity of the wearer, and enhanced bloom during application. As such, a key aspect of the microcapsule performance is to deposit as many capsules as possible during product application. Another challenge is minimizing the fragrance diffusion out of the capsules into the consumer product as this negatively impacts shelf life and transportation in hot climates. However, it is imperative that the fragrance is released during use of the product and wear of the substrates. Biopolymers are used in many facets of encapsulation of flavors and fragrances. Biopolymers are used in encapsulation techniques based on complex coacervation (gelatin), spray drying (starch), and emptied cells (yeast, spores). Furthermore, biopolymers are used as dispersants/emulsifiers in encapsulation (i.e. beverage emulsions), as rheololgy modifiers in aqueous-based microcapsule dispersions. In addition, biopolymers or modified biopolymers can be used to modify capsule surface as to improve their deposition ability in rinse-off applications (detergent, shampoo, hair conditioner, body wash). This presentation will provide an overview flavor/fragrance encapsulation as well as examples of where biopolymers and biobased materials are being used.