Data on spray-drying microencapsulation of Schinus terebinthifolius essential oil

Description

Schinus terebinthifolius Raddi has been extensively studied due to its phamaceutical and insecticide properties. Microencapsulation by spray-drying is widely used in the food and drug industries, as well as in the microencapsulation of essential oils, since it protects the oils against several effects, such as oxidation and thermal degradation, thus optimising its use. The data presented include parameters for the production of essential oil microparticles using maltodextrin (MD), arabic gum (AG) as encapsulating agents and silicon dioxide (SiO2) as the dispersing agent. The microencapsulating agents and the spray-drying technique produced microcapsules capable of protecting the essential oil against external effects, such as thermal degradation. In the second worksheet of the file, it is possible to observe the measurements of the diameters of 250 microparticles and the calculation of the histogram that indicates the size average of the microparticles formed. The third and fourth worksheets of the file contain data from thermogravimetric analyses of microparticles with and without oil, respectively. The fifth and sixth worksheets contains images of the microparticles obtained by Scanning Electron Microscopy (SEM) and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) analyses, respectively . The described formulation and characterisation can be used as support for research work in the pharmaceutical, textile and agronomic food technology areas that use essential oils in their products.

Steps to reproduce

The essential oil of Schinus terebentifolius was obtained by hydrodistillation using a modified Clevenger-type apparatus. The essential oil, as a 10 ppm solution in double distilled HPLC grade hexane (Merck, Darmstadt, Germany), was analysed by gas chromatography. The microcapsules were obtained by a spray-drying technique in a Mini Spray Dryer 1.0 LabMaq, Brazil. The chemical characterisation of the microencapsulated oil was performed by gas chromatography using a GC-2010 Plus (Shimadzu, Tokyo, Japan). The morphological characterisation of the microcapsules was conducted in two different ways. First, the encapsulated product was metallised in a QUORUM Q150R ES with a current of 45 mA for 200 s. Second, elemental analysis was performed by X-ray energy dispersive spectroscopy (EDS) using an SDD detector. The thermal degradation of the samples was performed in SDT650 equipment (TA Instruments).

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