PRECIPITATION OF CAPSICUM PEPPER ETHANOLIC EXTRACT AND POLY(L-LACTIC ACID) BY SUPERCRITICAL CO2 ANTISOLVENT PROCESS

A. C. de AGUIAR, F. M. BARRALES, C. A. REZENDE, G. F. BARBERO, J. MARTÍNEZ
2015 Anais do XX Congresso Brasileiro de Engenharia Química   unpublished
Biquinho pepper is rich in capsinoids, which present strong pharmacological effects on health. The lack of pungency assigned to capsinoids make them interesting for the application in pharmaceutical and food industries. The aim of this work was to evaluate the encapsulation of biquinho extracts by supercritical antisolvent technique using Poly(L-lactic acid) as the coating material. A lab-scale apparatus that consists of a CO 2 supply system, solution and CO 2 injection unit (coaxial nozzle
more » ... an internal diameter equal to 127 µm), and a high pressure column was used. The process parameters were: temperature and CO 2 flow rate were fixed at 40 ˚C and 20.4 g/min respectively, pressure varied from 8 to 12 MPa, and solution flow rate varied from 0.5 and 1.0 mL/min. The morphology of particles was analyzed using a scanning electron microscope. The micrographies showed that the geometry of the particles was greatly influenced by pressure and solution flow rate. At the conditions of 10 MPa and 0.75 mL/min solution flow rate, small spherical particles (diameter of approximately 5-10 µm) were observed.
doi:10.5151/chemeng-cobeq2014-0320-26021-177557 fatcat:ymp2s5o4dja3jkom52theneuri