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- W2394844501 abstract "In order to improve the stationary phase retention of polar solvent systems and aqueous two-phase systems (ATPSs), we designed a multiple spiral disk assembly for type-J high-speed counter-current chromatography (HSCCC). The stationary phase retention was studied under different elution modes by using two solvent systems that contained 1-butanol-acetic acid-water (4:1:5, V/V/V) and polyethylene glycol (PEG) 1000-K2HPO4-water (12.5:12.5:75, W/W/W). The best retention was obtained in L-I-T, U-O-H, L-I-H three modes by pumping lower mobile phase from inner terminal (I) to outer terminal (O), and upper mobile phase from outer terminal (O) to inner terminal (I) at a relatively high flow rate. Meanwhile, the relationship between retention percentage of the stationary phase (Sf) and various parameters such as flow-rate (F), rotation speed (w) and column temperature (T) was also studied. Sf increased with the increase of w and decreased with the increase of F. Regression analysis showed a linear relationship between Sf and F1/2/w. The influence of T on Sf was not obvious between 20 degrees C and 40 degrees C, lower temperature than 20 degrees C was not suitable for viscous ATPSs. Acceptable resolutions were achieved when it was applied for the separation of dipeptides including Leu-Tyr and Val-Tyr by using 1-butanol-acetic acid-water (4:1:5, V/V/V) solvent system. The proteins including cytochrome C and myoglobin, lysozyme and myoglobin, and fresh chicken egg-white proteins were well separated by 12.5% PEG1000-12.5% K2HPO4-75% water (pH 9.0) and 16% PEG 1000-12.5% K2HPO4-71.5% water (pH 8.0) system." @default.
- W2394844501 created "2016-06-24" @default.
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- W2394844501 date "2009-04-01" @default.
- W2394844501 modified "2023-09-23" @default.
- W2394844501 title "[Application of spiral disk column in high-speed counter-current chromatography for peptide and protein separation]." @default.
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