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High-pressure liquid impregnation of barbatimão bark extract into biopolymeric membrane composed of PBS/PLA and Cloisite 20 A blend
The Journal of Supercritical Fluids ( IF 3.4 ) Pub Date : 2024-10-18 , DOI: 10.1016/j.supflu.2024.106430
Priscilla C. Veggi, Tahmasb Hatami, Leonardo F. Campos, Luciana P. Mazur, Luana E. do Carmo, Lucia H.I. Mei, Juliane Viganó

Renowned for its medicinal properties, barbatimão bark extract contains bioactive compounds susceptible to degradation, necessitating their safeguarding within a stable matrix for diverse biomedical applications. This study investigates using high-pressure liquid impregnation (HPLI) to load barbatimão extract into biopolymeric membranes at 30, 45, and 60 °C, and 11 MPa. HPLI combines the simplicity of direct immersion with improved mass transfer rates under high pressure. Biopolymeric membranes made from poly(butylene succinate) (PBS), poly(lactic acid) (PLA), and Cloisite 20 A (C20A) in a 50/45/5 (v/v) composition were created using electrospinning. Comparative analysis with conventional methods, along with evaluation of impregnated membrane properties using SEM, FTIR, and thermogravimetric analysis, demonstrated the effectiveness of HPLI. HPLI yielded markedly higher phenolic compound loadings, peaking at 43.79 mg ETA/g membrane at 11 MPa and 45 °C over 6 h, compared to 25.44 mg ETA/g membrane with conventional impregnation at ambient pressure and 45 °C over the same duration.

中文翻译:


将 barbatimão 树皮提取物的高压液体浸渍到由 PBS/PLA 和 Cloisite 20 A 混合物组成的生物聚合物膜中



barbatimão 树皮提取物以其药用特性而闻名,含有易降解的生物活性化合物,因此需要将它们保护在稳定的基质中,用于各种生物医学应用。本研究调查了使用高压液体浸渍 (HPLI) 在 30、45 和 60 °C 和 11 MPa 下将 barbatimão 提取物加载到生物聚合物膜中。HPLI 将直接浸入的简单性与高压下更高的传质速率相结合。使用静电纺丝法制备由聚丁二酸丁二醇酯 (PBS)、聚乳酸 (PLA) 和回廊石 20 A (C20A) 以 50/45/5 (v/v) 组合物制成的生物聚合物膜。与传统方法的比较分析,以及使用 SEM、FTIR 和热重分析对浸渍膜特性的评估,证明了 HPLI 的有效性。HPLI 产生显着更高的酚类化合物负载量,在 11 MPa 和 45 °C 下 6 小时内达到 43.79 mg ETA/g 膜的峰值,而在环境压力和 45 °C 下常规浸渍的膜在同一持续时间内达到 25.44 mg ETA/g 膜。
更新日期:2024-10-18
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