Sustainable ultrasound-assisted extraction of Polygonatum sibiricum saponins using ionic strength-responsive natural deep eutectic solvents

被引:7
|
作者
Zhang, Hongli [1 ,2 ]
Li, Xinpeng [2 ]
Kang, Miao [2 ]
Li, Zhanrong [2 ]
Wang, Xiaowen [2 ]
Jing, Xu [2 ]
Han, Jiajun [1 ]
机构
[1] China Agr Univ, Coll Sci, Beijing 100193, Peoples R China
[2] Shanxi Agr Univ, Coll Food Sci & Engn, Taigu 030801, Shanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Saponins; Natural deep eutectic solvents; Ultrasound; Ionic strength response; Sustainable extraction; Polygonatum sibiricum; PHENOLIC-COMPOUNDS;
D O I
10.1016/j.ultsonch.2023.106640
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The sustainable extraction of saponins was investigated using natural deep eutectic solvents (NADESs) combined with ultrasound-assisted extraction. A novel NADES (butyric acid-urea) that was responsive to ionic strength was designed and used as the extractant. Ultrasound treatment and a catalyst ferric chloride with plant cell wall breaking function were applied to improve the extraction efficiency. Since the solubility of the NADES varied significantly with ionic strength, 95% of NADES was readily separated from the water phase after the addition of sodium chloride, while saponins remained in the water phase for easy collection. The reuse capacity of NADES, the eco-friendliness of the extraction method, and the antioxidant activity of the extract were further evaluated. NADES was continuously recovered and used to extract Polygonatum sibiricum powder: the yield of saponins did not decrease after five cycles of recovery and re-extraction. The penalty point on the "Eco-scale" suggested that the extraction method was "green" (i.e. eco-friendly). Compared with ethanol extracts, the NADES extracts showed a higher saponin concentration and antioxidant activity. The study can contribute to the sustainable and green extraction of hydrophilic active substances in the food and pharmaceutical industries.
引用
收藏
页数:8
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