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Study of the particle formation of limonene in matodextrin using RESS (rapid expansion of supercritical solutions)

Grant number: 12/01221-8
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): August 01, 2012
Effective date (End): January 08, 2014
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Engineering
Principal Investigator:Alessandra Lopes de Oliveira
Grantee:Luciana Cristina Machado
Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil


This project aims to use supercritical CO2 technology to study the micro-and nanoparticles formation to encapsulated essential oils in biopolymers. This theme is innovative, since the supercritical technology has been used in the formation and impregnation of particles, mostly of solid solutes, but has not been applied to the encapsulation of essential oils. Therefore, the innovative character of this work is to form stable emulsions of essential oils, compounds highly soluble in supercritical CO2 in polymers before submitting them to the formation of micro-and nanoparticles by supercritical technology.Recent studies have demonstrated success and benefits of using this technology in the formation of nanoparticles, especially drugs such as can be seen from the references cited in the following items. If the proposed objectives are achieved in this work, the encapsulation technology of aromatic substances from natural sources will be experiencing a great transformation, since this process involves low temperatures, which allows non-degradation of these thermosensible compounds making them more stable. Still, compared to conventional processes of formation of aromatic substances microencapsulated (spray dried of the emulsions in hot air), the use of this technology could enable the formation of smaller particles in nanometer order.There is also, in this project, the concern of using polymers that are normally used in industry of "smell powder" so they can take advantage of proven stability studies of these materials and does not interfere with the cost of products, and considering the character this innovative research and high cost of many biopolymers, we chose to study that traditional industries have been using this area. The argument presented here follows the idea in the items comprising this research project.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MACHADO, L. C.; PELEGATI, V. B.; OLIVEIRA, A. L.. Study of simple microparticles formation of limonene in modified starch using PGSS - Particles from gas-saturated suspensions. JOURNAL OF SUPERCRITICAL FLUIDS, v. 107, p. 260-269, . (12/01221-8, 10/16665-3, 08/00148-0, 12/06981-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MACHADO, Luciana Cristina. Formation of microparticles of limonene in polysaccharides using supercritical CO2. 2014. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Zootecnica e Engenharia de Alimentos (FZE/BT) Pirassununga.

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