fevereiro 2015 vol. 1 num. 2 - XX Congresso Brasileiro de Engenharia Química

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PHASE BEHAVIOR OF (CO2 + DICHLOROMETHANE +PASSION FRUIT SEED OIL) AND (CO2 +DICHLOROMETHANE + PASSION FRUIT SEED OIL + PLGA)SYSTEMS

OLIVEIRA, D. A.; ANGONESE, M.; COMIM, S. R.; FERREIRA, S. R. S.;

Artigo:

Large amount of passion fruit seeds are misspent after juice production.Heat and light can cause loss or reduction of seed oil antioxidant and antitumor activities.Thus, co-precipitation with polymers by Supercritical AntiSolvent process (SAS) may beused to preserve important compounds. This work aimed to study the phase behavior ofthe systems 1) CO2+ dichloromethane+ seed oil and 2) CO2+ dichloromethane+ seed oil+PLGA (poly(lactic-co-glycolic) acid), to determine the operational conditions to beemployed on future SAS assays. The static synthetic method was applied using differentCO2 compositions (60 - 98.8 wt %) and temperatures (35 and 45 °C). Liquid-vapor,liquid-liquid and liquid-liquid-vapor phase transitions were observed. Conditionssuggested to proceed the SAS encapsulation study are: 35 °C to preserve extract quality,CO2 concentration between 92.5 and 97.0 %, ensuring its action as anti-solvent, andpressure above 75 bar to guarantee a single phase equilibrium.

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DOI: 10.5151/chemeng-cobeq2014-0476-25304-173285

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Como citar:

OLIVEIRA, D. A.; ANGONESE, M.; COMIM, S. R.; FERREIRA, S. R. S.; "PHASE BEHAVIOR OF (CO2 + DICHLOROMETHANE +PASSION FRUIT SEED OIL) AND (CO2 +DICHLOROMETHANE + PASSION FRUIT SEED OIL + PLGA)SYSTEMS", p. 14918-14925 . In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 2359-1757, DOI 10.5151/chemeng-cobeq2014-0476-25304-173285

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