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|Type:||Artigo de periódico|
|Title:||Obtaining Phenolic Compounds From Jatoba (hymenaea Courbaril L.) Bark By Supercritical Fluid Extraction|
|Abstract:||The extraction of polyphenol compounds from jatoba (Hymenaea courbaril L. var stilbocarpa) bark using supercritical fluid extraction (SFE) with CO 2 and cosolvents has been investigated. Among the solvent systems studied, SFE using CO2 and water (9:1, v/v), at 323 K and 35 MPa, presented the best results, with extract yield of 24%, and with high antioxidant activity (IC50 of 0.2 mg/cm3). This solvent system was used to determine global yield isotherms, which were built at 323 and 333 K, and 15, 25, and 35 MPa, using a second lot of jatoba. The highest yield was 11.5% at 15 MPa and 323 K, with maximum total phenolic compounds (TPC) of 335.00 mg TAE/g extract (d.b.) and total tannins content of 1.8 g/100 g raw material. A kinetic experiment was performed using optimized conditions, yielding 18% extract, and the kinetic parameters were used to scale-up the process from laboratory to pilot scale. Chemical analyses showed high content of phenolic compounds in the extracts of jatoba bark mostly due to the presence of procyanidins. © 2014 Elsevier B.V.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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