390538 Supercritical Fluid Extraction and Reaction to Modify Metabolites from Biomass
Currently, the interest on metabolites extracted from plants is growing. These materials find application in the cosmetic, food, chemical and pharmaceutical industry (Miron, Plaza, Bahrim, Ibáñez, & Herrero, 2011). One of the most interesting features of these metabolites is the antioxidant capacity, which can give to foods a longer shelf life. Besides, in order to protect the environment, the necessity of using categorized technologies such as the Green chemistry have been developed (Cerón, Higuita, & Cardona, 2012)
The biorefinery concept embraces the green chemistry and the integral use of the raw material. The total and systemic use of the biomass will be done with the aim of producing a wide range of value-added products from the same raw material (Rincón, Moncada, & Cardona, 2014)
In this work the supercritical extraction of antioxidant capacity compounds from Persea americana (avocado) was carried out experimentally. Then the Follin Ciocalteu and the DPPH methods were used. (Brand-Williams, Cuvelier, & Berset, 1995; Cerón et al., 2012). The carbon dioxide was used as a supercritical solvent for the extraction; also an enzymatic hydrolysis with celluloses was carried out in presence of CO2 to obtain a sugar platform (Ouyang et al., 2013; Pereira & Meireles, 2009) Finally from the hydrolysis, ethanol and PHB were obtained. The techno-economical design was made with Aspen Tech v8.0, where the energy and mass balance are used to obtain the economical approximation.
The experimental work was carried out at 200 bar demonstrating that could increase significantly the yields in the extraction of value-added products as well as the cost associated to energy consumption. Additionally the techno-economical analysis shows the compromise function between energy consumption and product yields.
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Cerón, I. X., Higuita, J. C., & Cardona, C. a. (2012). Design and analysis of antioxidant compounds from Andes Berry fruits (Rubus glaucus Benth) using an enhanced-fluidity liquid extraction process with CO2 and ethanol. The Journal of Supercritical Fluids, 62, 96–101. doi:10.1016/j.supflu.2011.12.007
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Rincón, L. E., Moncada, J., & Cardona, C. a. (2014). Analysis of potential technological schemes for the development of oil palm industry in Colombia: A biorefinery point of view. Industrial Crops and Products, 52, 457–465. doi:10.1016/j.indcrop.2013.11.004