Gac oil and carotenes production using supercritical CO2: Sensitivity analysis and process optimization through a RSM-COM hybrid approach
authors Martins, PF; de Melo, MMR; Silva, CM
nationality International
journal JOURNAL OF SUPERCRITICAL FLUIDS
author keywords Carotenes; Economic analysis; Gac oil; Optimization; RSM-COM; Supercritical fluid extraction
keywords RESPONSE-SURFACE METHODOLOGY; EUCALYPTUS-GLOBULUS BARK; CARBON-DIOXIDE EXTRACTION; FLUID EXTRACTION; OPERATING-CONDITIONS; SEED OIL; ANTIOXIDANT ACTIVITY; EXPERIMENTAL-DESIGN; TRITERPENIC ACIDS; ECONOMIC-ANALYSIS
abstract Gac (Momordica cochinchinensis Spreng) is a traditional fruit from Southeast Asia whose aril oil has been investigated owing to the remarkable abundance of oil and carotenes (e.g. beta-carotene and lycopene). In this context, supercritical fluid extraction (SFE) using CO2 is an option for the exploitation of this raw material. In this work a hybrid approach combining cost of manufacturing (COM) and response surface methodology (RSM) concepts was applied to lab results of SFE of gac oil with the objective of finding the operating conditions that ensure the best technical and economic performance of the process. Upon specifying a SFE commercial process comprising a fruit drying line followed by two extractors of 0.4 m(3) in parallel, the impact of extraction pressure (200-400 bar), temperature (40-60 degrees C) and time (0.5-2.0 h) on manufacturing costs and productivity was assessed. The best COM for oil extraction was found for 400 bar, 60 degrees C, and 1.0 h, amounting 8(sic) kg(oil)(-1). Regarding specifically extraction of carotenes, the best COM was attained for 400 bar, 50 degrees C, and 1.0 h, amounting 755(sic)) k(cairotenes)(-1). Both production costs are encouraging in relation to current market quotations of gac oil and purified (>90%) carotenes. Finally, a sensitivity analysis to flow rate was accomplished. In the whole, the outcomes of this study support the exploitation of gac oil and naturally occurring carotenes from gac aril through supercritical CO2 extraction. (C) 2015 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0896-8446
year published 2015
volume 100
beginning page 97
ending page 104
digital object identifier (doi) 10.1016/j.supflu.2015.02.023
web of science category Chemistry, Physical; Engineering, Chemical
subject category Chemistry; Engineering
unique article identifier WOS:000353729700012
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journal impact factor 3.122
5 year journal impact factor 3.001
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