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Ionic liquid‐modified countercurrent chromatographic isolation of high‐purity delphinidin‐3‐rutinoside from eggplant peel
Journal of Food Science ( IF 3.9 ) Pub Date : 2020-03-06 , DOI: 10.1111/1750-3841.15089
Chen Fan 1 , Nai Li 1 , Xueli Cao 1 , Lijiao Wen 1
Affiliation  

Delphinidin-3-rutinoside, a high-value of anthocyanin, was isolated and purified by ionic liquid (IL)-modified countercurrent chromatography (CCC) from waste peel of eggplant (Solanum melongena), one of the most common vegetables consumed all around the world. Different conventional CCC and IL-CCC solvent systems were evaluated in respect of partition coefficient (K), separation factor (α), and stationary phase retention factor (Sf ) to separate polar target and other components. Basic solvent system, kind of ILs, and amount of ILs were systematically optimized by totally K-targeted strategy, which drastically reduced the experimental effort. Finally, a novel CCC two-phase solvent system (methyl tert-butyl ether-butanol-acetonitrile-1% trifluoroacetic acid water-1-butyl-3-methylimidazolium hexafluorophosphate ([C4 MIM][PF6 ]) [2:4:1:5:0.2; v/v/v/v/v]) was successfully established and applied. The baseline separation of target fraction was obtained in one cycle process. The purity of delphinidin-3-rutinoside was over 99%. Moreover, the distribution behavior of different kinds of ILs in biphasic solvent system and the removal method of ILs were explored. The results showed that hydrophobic IL significantly improved the partition of polar anthocyanin in organic solvent system, thereby the separation resolution and stationary phase retention through introducing intermolecular forces. This IL-modified CCC strategy may be applied for the separation of other anthocyanins from variety of natural food resources and waste.

中文翻译:

茄子皮中高纯度翠雀素-3-芸香苷的离子液体改性逆流色谱分离

Delphinidin-3-rutinoside 是一种高价值的花青素,通过离子液体 (IL) 改性逆流色谱 (CCC) 从茄子 (Solanum melongena) 的废皮中分离和纯化,茄子是全世界最常见的蔬菜之一。世界。对不同的常规 CCC 和 IL-CCC 溶剂系统在分配系数 (K)、分离因子 (α) 和固定相保留因子 (Sf) 方面进行了评估,以分离极性目标和其他组分。通过完全以 K 为目标的策略系统地优化了基本溶剂系统、IL 的种类和 IL 的数量,这大大减少了实验工作。最后,一种新型的 CCC 两相溶剂体系(甲基叔丁基醚-丁醇-乙腈-1% 三氟乙酸水-1-丁基-3-甲基咪唑鎓六氟磷酸盐([C4 MIM][PF6])[2:4:1 :5:0.2; v/v/v/v/v]) 成功建立和应用。目标馏分的基线分离是在一个循环过程中获得的。delphinidin-3-rutinoside的纯度超过99%。此外,还探讨了不同类型离子液体在双相溶剂体系中的分布行为和离子液体的去除方法。结果表明,疏水性离子液体通过引入分子间作用力,显着改善了极性花青素在有机溶剂体系中的分配,从而提高了分离分辨率和固定相保留率。这种 IL 修饰的 CCC 策略可用于从各种天然食物资源和废物中分离其他花青素。delphinidin-3-rutinoside的纯度超过99%。此外,还探讨了不同类型离子液体在双相溶剂体系中的分布行为和离子液体的去除方法。结果表明,疏水性离子液体通过引入分子间作用力,显着改善了极性花青素在有机溶剂体系中的分配,从而提高了分离分辨率和固定相保留率。这种 IL 修饰的 CCC 策略可用于从各种天然食物资源和废物中分离其他花青素。delphinidin-3-rutinoside的纯度超过99%。此外,还探讨了不同类型离子液体在双相溶剂体系中的分布行为和离子液体的去除方法。结果表明,疏水性离子液体通过引入分子间作用力,显着改善了极性花青素在有机溶剂体系中的分配,从而提高了分离分辨率和固定相保留率。这种 IL 修饰的 CCC 策略可用于从各种天然食物资源和废物中分离其他花青素。从而通过引入分子间作用力实现分离分辨率和固定相保留。这种 IL 修饰的 CCC 策略可用于从各种天然食物资源和废物中分离其他花青素。从而通过引入分子间作用力实现分离分辨率和固定相保留。这种 IL 修饰的 CCC 策略可用于从各种天然食物资源和废物中分离其他花青素。
更新日期:2020-03-06
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