Production of phenolic-rich extracts from Brazilian plants using supercritical and subcritical fluid extraction: Experimental data and economic evaluation

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• 作者：Priscilla C. Veggi ; ^{pveggi@gmail.com" class="auth_mail} ; Rodrigo N. Cavalcanti ; M. Angela A. Meireles
• 关键词：Brazilian plants ; Polyphenolic compounds ; Flavonoids ; Antioxidant activity ; Supercritical fluid extraction ; Cost of manufacturing
• 刊名：Journal of Food Engineering
• 出版年：June, 2014
• 年：2014
• 卷：131
• 期：Complete
• 页码：96-109
• 全文大小：1071 K

文摘

Flame vine (Pyrostegia venusta) (FV), ice-cream-bean (Inga edulis) (IC), dog鈥檚 knot (Heteropterys aphrodisiaca) (DK), and common bean (Phaseolus vulgaris L.) (BE) extracts were obtained by supercritical and subcritical fluid extraction (SFE) at 323 K and 35 MPa using pure carbon dioxide (CO₂), carbon dioxide with ethanol (CO₂ + EtOH) and carbon dioxide with water (CO₂ + H₂O). The extraction efficiency was evaluated by factoring in the solvent system and plant matrix influence in extraction yield (EY), antioxidant activity (AA), total phenolic content (TPC) and total flavonoid content (TFC). The manufacturing costs of crude extracts (COM_EY) and phenolic-rich fractions (COM_TPC) were also evaluated. The highest EY was achieved using CO₂ + H₂O, except for IC extracts. The BE extracts showed the highest TPC (338 mg GAE/g extract, dw), and the highest TFC was obtained for IC extracts using CO₂ (260 mg CE/g extract, dw). AA achieved higher values for FV extracts using CO₂ + EtOH (0.096 mL/mg). The lowest COM_EY and COM_TPC were obtained for FV and BE extracts using CO₂ + H₂O in a 0.5 m³ extraction column.