Pressurized liquid- and supercritical fluid extraction of crude and waste seeds of guarana (Paullinia cupana): Obtaining of bioactive compounds and mathematical modeling
作者： Ádina L. Santana , Lívia D. Queirós , Julian Martínez , Gabriela A. Macedo
DOI: 10.1016/J.FBP.2019.07.007
关键词:
摘要: Abstract In this work pressurized liquid- (PLE) and supercritical fluid extraction (SFE), combined with the enzymes cellulase pectinase were applied to improve recovery of phenolics alkaloids from crude waste seeds guarana. The kinetic behavior extractions was evaluated mathematical modeling overall curves (OECs) using a two straight-lines spline. maximum catechin (50.59 g/100 g extract) caffeine (46.19 g/100 raised in PLE assisted enzymes. also enhanced total phenolic content antioxidant potential, comparison control samples 50% hydroethanolic solutions. low target compounds by SFE is justified poor affinity polar structure catechins methylxanthines carbon dioxide. For most modeled OECs, constant rate time span 40 min convective mass transfer mechanism predominant.
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