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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Production of Copaiba oleoresin particles from emulsions stabilized with modified starches

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Author(s):
Pasquel Reategui, Jose Luis [1] ; Barrales, Francisco Manuel [1] ; Rezende, Camila A. [2] ; Queiroga, Carmen L. [3] ; Martinez, Julian [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Campinas, Dept Food Engn, Coll Food Engn, BR-13083862 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Inst Chem, BR-13083862 Campinas, SP - Brazil
[3] Univ Estadual Campinas, Chem Biol & Agr Res Ctr CPQBA, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: INDUSTRIAL CROPS AND PRODUCTS; v. 108, p. 128-139, DEC 1 2017.
Web of Science Citations: 3
Abstract

The oleoresin of copaiba has many pharmacological properties, such as anti-inflammatory, antiseptic, and cicatrizing, besides helping to treat skin diseases, among other applications. In order to improve its activity, copaiba oleoresin was encapsulated within polymeric particles through emulsification assisted by ultrasound followed by a drying process. Ultrasound-assisted emulsification led to the formation of kinetically stable emulsions. The emulsions with increased stability and the lowest droplet diameters (80.95 +/- 2.1 nm (Hi-Cap 100) and 71.8 +/- 2.9 nm (Snow-Flake E 6131)) were subjected to freeze-drying and spray-drying to produce dry particles. The particles were characterized in terms of moisture content, particle size distribution, encapsulation efficiency, surface oil, oxidative stability, X-ray diffraction and morphological analysis by FESEM and CLSM. Both drying techniques produced amorphous particles with different sizes and low moisture content. Furthermore, high encapsulation efficiency and high stability against thermal degradation were achieved. The analysis of the particles morphology indicated that the nature of the biopolymers used (Hi-Cap 100 and Snow-Flake E 6131) did not affect their microstructure. However, as expected, the freeze-drying and spray-drying techniques produced particles with different external microstructures. SD particles were spherical, whereas FD particles presented irregular structures similar to sheets. (AU)

FAPESP's process: 16/13602-7 - Study on strategies to allow the integral use of lignocellulosic biomass
Grantee:Camila Alves de Rezende
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 15/11932-7 - Integration of high pressure extraction to separation operations for the recovery of by-products from fruit processing
Grantee:Julian Martínez
Support Opportunities: Regular Research Grants