| 阚雨东，王亚杰，祝欣，朱林英，周喜.亲-疏水可切换低共熔溶剂提取
油茶籽饼中茶皂素研究[J].中国油脂,2025,50(10):.[KAN Yudong, WANG Yajie, ZHU Xin, ZHU Linying， ZHOU Xi.Extraction of tea saponin from camellia seed cake using hydrophilic-hydrophobic switchable deep eutectic solvent[J].China Oils and Fats,2025,50(10):.] |
| 亲-疏水可切换低共熔溶剂提取
油茶籽饼中茶皂素研究 |
| Extraction of tea saponin from camellia seed cake using hydrophilic-hydrophobic switchable deep eutectic solvent |
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出版日期：
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240570 |
| 中文关键词: 油茶籽饼；茶皂素；pH调控 可切换；低共熔溶剂 |
| 英文关键词:camellia seed cake tea saponin pH regulation switchable deep eutectic solvent |
| 基金项目:湖南省自然科学基金项目（2022JJ50242）；邵阳学院研究生科研创新项目（CX2023SY022） |
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| 中文摘要: |
| 旨在为茶皂素的高效提取及低共熔溶剂（DES）提取法中DES的快速分离、回收提供参考，采用混合直链脂肪酸制备pH调控的亲-疏水可切换DES,并将其用于油茶籽饼中茶皂素的提取。考察了混合脂肪酸的种类及物质的量比对亲-疏水可切换DES提取茶皂素得率的影响，在此基础上探讨了茶皂素提取工艺条件〔固液比（油茶籽饼与DES质量体积比）、提取温度、提取时间〕对茶皂素得率的影响，考察了制备的亲-疏水可切换DES的重复使用性能。结果表明：以癸酸-壬酸（物质的量比3∶ 1）制备的亲-疏水可切换DES具有最优的茶皂素得率，且茶皂素得率显著优于单一的癸酸或壬酸及乙醇提取法的；在油茶籽饼与DES质量体积比1∶ 4 、提取温度50 ℃、提取时间20 min条件下，茶皂素得率可达到13.60%；制备的亲-疏水可切换DES具有良好的重复使用性能，使用5次，茶皂素得率仍然高达13.50%。综上，通过pH的调控切换DES的亲-疏水性，可实现DES与产物的快速分离、回收，且无须对油茶籽饼进行脱脂预处理，简化了提取工艺，有利于茶皂素的高效提取。 |
| 英文摘要: |
| To provide a reference for the efficient extraction of tea saponin and rapid separation and recovery of deep eutectic solvents (DES) in the DES extraction method, a hydrophilic-hydrophobic switchable DES was prepared using mixed straight-chain fatty acids and applied to the extraction of tea saponin from camellia seed cake. The effects of the types and molar ratios of mixed fatty acids on the yield of tea saponin extracted by the hydrophilic-hydrophobic switchable DES were investigated. On this basis, the effects of extraction process conditions of tea saponin (solid - liquid ratio ( ratio of camellia seed cake mass to DES volume), extraction temperature, extraction time) on the yield of tea saponin were explored. The reusability of the prepared hydrophilic-hydrophobic switchable DES was examined. The results showed that the hydrophilic-hydrophobic switchable DES prepared with capric acid - nonanoic acid (molar ratio 3∶ 1) had the highest yield of tea saponin, which was significantly better than that of single capric acid or nonanoic acid and ethanol extraction methods. Under the conditions of solid-liquid ratio 1∶ 4, extraction temperature 50 ℃, and extraction time 20 min, the yield of tea saponin reached 13.60%. The prepared hydrophilic-hydrophobic switchable DES had good reusability, and after 5 uses, the yield of tea saponin was still as high as 13.50%. In conclusion, by switching the hydrophilicity - hydrophobic of the DES through pH regulation, rapid separation of the DES from the product can be achieved, realizing the rapid recovery of the DES. Moreover, there is no need for defatting pretreatment of the camellia seed cake, which simplifies the extraction process and is conducive to the efficient extraction of tea saponin. |
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