Title
Production of copaiba (Copaifera officinalis) oleoresin particles by supercritical fluid extraction of emulsions
Date Issued
01 October 2018
Access level
metadata only access
Resource Type
journal article
Author(s)
Fernandes F.P.
dos Santos P.
Rezende C.A.
Sartoratto A.
Queiroga C.L.
Martínez J.
University of Campinas
Publisher(s)
Elsevier B.V.
Abstract
Suspended particles of copaiba (Copaifera officinalis) oleoresin were produced by supercritical fluid extraction of emulsions (SFEE), using modified starch Hi-Cap 100® as core material. First, ultrasound was applied to produce oil in water (O/W) emulsions with droplet diameter of 261.7 ± 2.2 nm. In SFEE, CO2 and emulsion flow rates, and solvent extraction time were evaluated in terms of residual ethyl acetate content (REA) and β-caryophyllene recovery in the suspension. SFEE achieved 94.1% reduction of ethyl acetate and β-caryophyllene recovery of 7.3%. This REA is within the exposure limit of ethyl acetate (5000 ppm per day). The suspended nanoparticles’ size showed little variation from the emulsion droplet diameter. Finally, the suspensions were dried to obtain powder particles. Field emission scanning electron microscopy (FESEM) revealed different structures depending on the drying method (freeze-drying or spray-drying). Moreover, confocal laser scanning microscopy (CLSM) confirmed that copaiba oleoresin was encapsulated in the particles.
Start page
364
End page
371
Volume
140
Language
English
OCDE Knowledge area
Ingeniería química
Subjects
Scopus EID
2-s2.0-85050483176
Source
Journal of Supercritical Fluids
ISSN of the container
08968446
Sponsor(s)
The authors thank CAPES, by the doctorate scholarship and financial support of the project, also FAPESP (grants 2006/03262-9 , 2007/58017-5 , 2009/54137-1 , 2012/22119-7 , 2015/11932-7 and 2016/13602-7 ) for financial support, and the National Institute of Science and Technology on Photonics Applied to Cell Biology (INFABIC) at the University of Campinas for the access to equipments and the provided assistance.
Sources of information:
Directorio de Producción Científica
Scopus