Extraction of Caffeine and Theophylline from Green Tea by Ionic Liquid-Modified Functional Polymer

来源 :The 6th International Conference on Separation and Technolog | 被引量 : 0次 | 上传用户：hdazf

【摘要】

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【作者】

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Dandan Han Jun Zhou Dong Wha Park

【机构】

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Department of Chemical Engineering,Inha University,253 Yonghyun-Dong,Nam-Ku,Incheon 402-751,Korea

【出处】

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The 6th International Conference on Separation and Technolog

【发表日期】

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2010年12期

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　　New ionic liquid-modified polymer sorbents were developed by the surface chemical modification of the polymer using synthesized ionic liquids.The obtained ionic liquid-modified particles were successfully used as a special sorbent in solid-phase extraction process to isolate the caffeine and theophyiline from tea.Different washing and elution solvents such as water,acetonitrile,and acetonitrile-acetic acid (90/10,v/v) were evaluated.By comparing the results of different cartridges with blank polymer,traditional C18 and ionic liquid-modified polymer,higher recovery was observed on the ionic liquid-modified polymer sorbents.A quantitative analysis was conducted by high-performance liquid chromatography using a C18 colunm (5 μm,150×4.6 mm).

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Extraction of Caffeine and Theophylline from Green Tea by Ionic Liquid-Modified Functional Polymer

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