Institute of Bast Fiber Crops & Center of Southern Economic Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China.
College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China.
Food Chem. 2023 Feb 15;402:134301. doi: 10.1016/j.foodchem.2022.134301. Epub 2022 Sep 19.
In this study, CO-triggered switchable hydrophilicity solvents (SHSs) based on different amines and water were employed in the ultrasonic-assisted extraction of Polygonatum sibiricum polysaccharides (PSPs). When CO was pumped into the amine, the solution became hydrophilic and could be used as an extractant for PSPs extraction. When CO was removed, the solution switched hydrophobicity, with the extractants being separated from the extract and further recycled and reused. The factors affecting the solid-liquid extraction of PSPs were studied. The maximum extraction yield of 399.2 mg/g was obtained at a solid-liquid ratio of 1:20, extraction time of 60 min, extraction temperature of 50 °C, and ultrasonic power of 500 W. SHSs could be recovered and reused with 88.4% recovery after the fifth cycle. The molecular weights and monosaccharide compositions of PSPs were also determined. This study provides a new strategy for sustainable extraction of plant polysaccharides and other bioactive ingredients.
在这项研究中，我们使用了基于不同胺和水的 CO 触发型可切换亲水性溶剂（SHSs），在超声波辅助下提取玉竹多糖（PSPs）。当 CO 被泵入胺中时，溶液变得亲水，可以用作 PSPs 提取的提取剂。当 CO 被去除时，溶液切换为疏水性，提取剂与提取物分离，然后进一步回收和再利用。研究了影响 PSPs 固液萃取的因素。在固液比为 1:20、提取时间为 60 分钟、提取温度为 50°C、超声功率为 500W 的条件下，最大提取率为 399.2mg/g。在第五次循环后，SHSs 的回收率为 88.4%，可以回收和再利用。还测定了 PSPs 的分子量和单糖组成。本研究为植物多糖和其他生物活性成分的可持续提取提供了一种新策略。
