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Optimizing Ultrasound-Assisted Deep Eutectic Solvent Extraction of Bioactive Compounds from Chinese Wild Rice

机译:超声辅助深水共溶从野生稻中提取生物活性化合物的研究

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摘要

In this study, deep eutectic solvents (DESs) were used for the ultrasound-assisted extraction (UAE) of valuable bioactive compounds from Chinese wild rice (Zizania spp.). To this end, 7 different choline chloride (CC)-based DESs were tested as green extraction solvents. Choline chloride/1,4-butanediol (DES-2) exhibited the best extraction efficiency in terms of parameters such as the total flavonoid content (TFC), total phenolic content (TPC), and free radical scavenging capacity (DPPH and ABTS●+). Subsequently, the UAE procedure using 76.6% DES-2 was also optimized: An extraction temperature of 51.2 °C and a solid–liquid ratio of 37.0 mg/mL were considered optimal by a Box–Behnken experiment. The optimized extraction procedure proved efficient for the extraction of 9 phenolic and 3 flavonoid compounds from Chinese wild rice as determined by quantification based on ultra-performance liquid chromatography–triple quadrupole tandem mass spectrometry (UPLC-QqQ-MS). This work, thus, demonstrates the possibility of customizing green solvents that offer greater extraction capacity than that of organic solvents.
机译:在这项研究中,深共晶溶剂(DESs)被用于超声波辅助提取(UAE)从中国野生稻(Zizania spp。)中有价值的生物活性化合物。为此,测试了7种不同的基于氯化胆碱(CC)的DES作为绿色萃取溶剂。就总黄酮含量(TFC),总酚含量(TPC)和自由基清除能力(DPPH ●)等参数而言,氯化胆碱/ 1,4-丁二醇(DES-2)表现出最佳的萃取效率。 和ABTS ●+ )。随后,还优化了使用76.6%DES-2的阿联酋流程:Box-Behnken实验认为提取温度为51.2°C,固液比为37.0 mg / mL是最佳的。经超高效液相色谱-三重串联四极杆串联质谱(UPLC-QqQ-MS)定量测定,优化的提取程序被证明可有效地从中国野生稻中提取9种酚类和3种类黄酮化合物。因此,这项工作证明了定制绿色溶剂的可能性,该绿色溶剂具有比有机溶剂更大的提取能力。

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