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Microfluidic Production of Lysolipid-Containing Temperature-Sensitive Liposomes

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Published on: March 3, 2020

Liquid-liquid extraction of lysozyme using a dye-modified ionic liquid.

Yu-Ping Tzeng¹, Ching-Wei Shen, Tiing Yu

¹Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30050, Taiwan.

Journal of Chromatography. A

|May 9, 2008

Summary

A novel affinity-dye ionic liquid, [BMIM]3[CB], efficiently extracts lysozyme from aqueous solutions. This method offers high recovery and selectivity, with stable performance over multiple cycles.

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Published on: April 26, 2011

Area of Science:

Biochemistry
Chemical Engineering
Separation Science

Background:

Lysozyme is a valuable enzyme with diverse applications.
Efficient and selective extraction methods are crucial for protein purification.
Ionic liquids offer unique properties for biomolecule separation.

Purpose of the Study:

To synthesize a novel affinity-dye ionic liquid, [BMIM]3[CB], for lysozyme extraction.
To investigate the liquid-liquid extraction of lysozyme using this ionic liquid.
To evaluate the selectivity and reusability of the extraction system.

Main Methods:

Synthesis of [BMIM]3[CB] by combining [BMIM][Cl] and the silver salt of Cibacron Blue 3GA (CB).
Performing liquid-liquid extractions of lysozyme from aqueous and ionic liquid phases.
Analyzing the effect of pH and ionic strength on lysozyme transfer.
Assessing the specificity against other proteins like cytochrome c, ovalbumin, and bovine serum albumin.
Evaluating the reusability of the ionic liquid phase over multiple extraction cycles.

Main Results:

Optimal lysozyme extraction (>90%) achieved at pH 4 in the aqueous phase.
Lysozyme transfer to the ionic liquid phase decreased with increasing aqueous phase pH.
Quantitative recovery of lysozyme from the ionic liquid phase was achieved using 1M KCl solutions (pH 9-11).
The extraction demonstrated high specificity for lysozyme compared to other tested proteins.
The ionic liquid phase maintained extraction efficiency after eight cycles.

Conclusions:

The synthesized [BMIM]3[CB] is an effective affinity-based ionic liquid for selective lysozyme extraction.
The extraction process is tunable via pH and ionic strength, allowing for efficient capture and release.
The system exhibits excellent reusability and specificity, making it a promising tool for protein purification.