Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Controlled release of the inner content of gellan gum microcapsules using temperature as the trigger mechanism
Submission Author:
Mateus de Lima , RJ
Co-Authors:
Mateus de Lima, Jorge Antonio Avendaño Benavides, Marcio CARVALHO
Presenter: Mateus de Lima
doi://10.26678/ABCM.COBEM2021.COB2021-0374
Abstract
Microcapsules are formed by a core material involved by a membrane. They have an important role in food and pharmaceutical industries due to their capacity to improve ingredient handling, to mask undesirable flavors, odors and to protect different components from chemical or physical degradation during storage or after ingestion, controlling the release of the encapsulated ingredient. The use can be extended to different applications that require the protection of the inner phase and its controlled release. Different triggers can be applied in order to activate the core release, depending of the application and capsule material. In the present work, we study the controlled release of the inner content of a bio-polymer base microcapsule, using temperature as the trigger mechanism. We analyze how the temperature and capsule properties (material, diameter and shell thickness) affect the release time. The release of the inner content is determined by adding a dye in the inner phase of the capsules and observing a suspension of microcapsules inside a controlled temperature bath in an inverted microscope. The results presented in this work show how different capsules can be design to deliver its inner content at different levels of temperature and residence time, we report two different approaches on rising the temperature of our particles and a promising trigger condition in order to disintegrate its shell.
Keywords
microcapsules, controlled release, temperature trigger, gellan gum, biopolymer, Microfluidics
