Switchable Deep Eutectic Solvents for the Green Extraction of Tea Saponins From Camellia Oleifera Seed Meal

IF 2.8 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL Journal of separation science Pub Date : 2025-01-17 DOI:10.1002/jssc.70082
Bincheng Gong, Lingqi Shen, Yu Wang, Zuguang Li, Guohua Zhu
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Abstract

Tea saponin has garnered tremendous interest for its potential use in surfactant and drug synthesis. This research was designed to develop a technique based on pH-responsive switchable deep eutectic solvents (SDESs) for extracting tea saponins from Camellia oleifera seed meal. SDES synthesized from hexanoic acid and triethanolamine (1:1 molar ratio) offered the optimum extractive performance and the optimal conditions were obtained through single-factor experiments: 30 wt% water content in SDES, solid-liquid ratio of 1:30 g/mL, 60°C extraction temperature, 30 min extraction time, and acid volume of 1500 µL. The extraction yield was 162.14 mg/g after optimization, which increased by 15.65% and 9.47% compared to water and ethanol extraction methods, respectively. After pH adjustment, 98.95% of the tea saponins were recovered in the bottom phase. After precipitation and freeze-drying procedures, the purity of the tea saponin solid was 62.9%.

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绿色萃取油茶籽粕中茶皂素的可调深共晶溶剂研究。
茶皂素因其在表面活性剂和药物合成方面的潜在用途而引起了人们的极大兴趣。研究了基于ph响应型可切换深度共晶溶剂(sess)提取油茶籽粕中茶皂素的工艺。以己酸和三乙醇胺为原料(摩尔比为1:1)合成的SDES提取率最佳,通过单因素实验得到最佳提取条件:SDES中水含量为30 wt%,料液比为1:30 g/mL,提取温度为60℃,提取时间为30 min,酸体积为1500µL。优化后的提取率为162.14 mg/g,比水浸法和乙醇浸法分别提高了15.65%和9.47%。调整pH后,98.95%的茶皂苷在底相回收。经沉淀和冷冻干燥后,茶皂素固体纯度为62.9%。
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阿拉丁
Ammonium bicarbonate (NH4HCO3)
阿拉丁
Calcium oxide (CaO)
阿拉丁
Octanoic acid
阿拉丁
Hexanoic acid
阿拉丁
Heptanoic acid
阿拉丁
Monoethanolamine (MEA)
阿拉丁
Diethanolamine (DEA)
阿拉丁
Triethanolamine (TEA)
来源期刊
Journal of separation science
Journal of separation science 化学-分析化学
CiteScore
6.30
自引率
16.10%
发文量
408
审稿时长
1.8 months
期刊介绍: The Journal of Separation Science (JSS) is the most comprehensive source in separation science, since it covers all areas of chromatographic and electrophoretic separation methods in theory and practice, both in the analytical and in the preparative mode, solid phase extraction, sample preparation, and related techniques. Manuscripts on methodological or instrumental developments, including detection aspects, in particular mass spectrometry, as well as on innovative applications will also be published. Manuscripts on hyphenation, automation, and miniaturization are particularly welcome. Pre- and post-separation facets of a total analysis may be covered as well as the underlying logic of the development or application of a method.
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