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题名: Application of cross-linked beta-cyclodextrin polymer for adsorption of aromatic amino acids
作者: Tang, SW;  Kong, L;  Ou, JJ;  Liu, YQ;  Li, X;  Zou, HF
关键词: beta-cyclodextrin polymer ;  adsorption ;  aromatic amino acids ;  branched-chain amino acids
刊名: JOURNAL OF MOLECULAR RECOGNITION
发表日期: 2006
DOI: 10.1002/jmr.756
卷: 19, 期:1, 页:39-48
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Biochemistry & Molecular Biology ;  Biophysics
研究领域[WOS]: Biochemistry & Molecular Biology ;  Biophysics
英文摘要: beta-Cyclodextrin (beta-CyD) was cross-linked by hexamethylene diisocyanate and the polymer was investigated for adsorption of aromatic amino acids (AAA) from phosphate buffer. High adsorption rates were observed at the beginning and the adsorption equilibrium was then gradually achieved in about 45 min. The adsorption of AAA decreased with the increase of initial concentration and also temperature. Under the same conditions, the adsorption efficiencies of AAA were in the order of (L)-tryptophan ((L)-Trp) > (L)-phenylalanine ((L)-Phe) > (L)-tyrosine ((L)-Tyr). Much higher adsorption values, up to 52.4 and 43.0mg/g for (L)-Trp and (L)-Phe, respectively, at 50 mmol/L and 3.2 mg/g for (L)-Tyr at 2 mmol/L, were obtained with the beta-CyD polymer at 37 degrees C. It was shown that the adsorption of AAA on the beta-CyD polymer was consistent with the Freundlich isotherm equation. The adsorption of mixed aromatic amino acids and branched-chain amino acids (BCAA) showed that AAA were preferentially adsorbed with adsorption efficiencies 10-24%, while those of BCAA were lower than 2%. It seems that the structure and hydrophobicity of amino acid molecules are responsible for the difference in adsorption, by influencing the strength of interactions between amino acid molecule and the polymer. Copyright (c) 2005 John Wiley & Sons, Ltd.
关键词[WOS]: PERFORMANCE-LIQUID-CHROMATOGRAPHY ;  MOLECULARLY IMPRINTED POLYMERS ;  MONOLITHIC STATIONARY PHASES ;  EFFICIENT RECOGNITION ;  SEPARATION ;  CHOLESTEROL ;  ADSORBENTS ;  WATER ;  DIASTEREOMERS ;  EQUILIBRIUM
语种: 英语
WOS记录号: WOS:000234691500005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140351
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatograph Res & Anal Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Tang, SW,Kong, L,Ou, JJ,et al. Application of cross-linked beta-cyclodextrin polymer for adsorption of aromatic amino acids[J]. JOURNAL OF MOLECULAR RECOGNITION,2006,19(1):39-48.
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