LiLi Wang

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Name: 王骊丽
Organization: Northwest University , China
Department: Department of Chemistry
Title: NULL(PhD)

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Co-reporter:Yicong Yang;Qian Qu;Weimin Li;Jie Yuan;Yi Ren
Journal of Separation Science 2016 Volume 39( Issue 13) pp:2481-2490
Publication Date(Web):
DOI:10.1002/jssc.201501216

In this work, based on the structural characteristics of bio-membrane molecules, a novel type of high-performance hydrophobic interaction chromatography stationary phase was prepared using cholesterol as a ligand. Investigating the separation performance of this stationary phase, the effect of pH and salt concentration of the mobile phase on the retention time, the absorption capacity, and the hydrophobic ability revealed that this stationary phase had a high loading capacity and moderate hydrophobic interactions compared with four different hydrophobic interaction chromatography stationary phase ligands. Five types of standard proteins could be baseline separated with a great selection for protein separation. When 3.0 M urea was added to the mobile phase, it could be refolded with simultaneous purification of denatured lysozyme by one-step chromatography. The mass recovery of lysozyme reached 89.5%, and the active recovery was 96.8%. Compared with traditional hydrophobic interaction chromatography, this new stationary phase has a good hydrophobic ability and a significant refolding efficiency.

Co-reporter:Qian Qu, Xiu Juan Yu, Xi Wu, Fei Shi, Li Li Wang
Chinese Chemical Letters 2012 Volume 23(Issue 12) pp:1389-1392
Publication Date(Web):December 2012
DOI:10.1016/j.cclet.2012.11.003
In this work, a kind of preparation method of zwitterionic ion chromatography (ZIC) stationary phase modified with phosphorylcholine (PC) was obtained by hydrolyzing after bonding phosphorylcholine dichloride to diol-silica to better explore the characteristics of the PC groups as ZIC stationary phase ligand in simultaneous separation of acidic proteins and basic proteins. The results showed that two kinds of acidic proteins and three kinds of basic proteins can be separated completely, meanwhile, hen egg white was separated and purified and three kinds of egg white components ovalbumin, G2 ovoglobulin and ovotransfemin proteins were separated completely by one single step on PC-ZIC column, the purity of all proteins reached above 95%. PC-ZIC stationary phase was successfully improved with better separation capacity and selectivity than previously reported in this paper.
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