Protein adsorbents intended for use in aqueous two-phase systems

Area of Science:

• Biochemistry
• Separation Science
• Biotechnology

Background:

• Cell disruption generates insoluble fragments that contaminate protein samples.
• Efficient separation of target proteins from cellular debris is crucial for downstream applications.
• Existing methods may struggle with complete removal of particulate matter.

Purpose of the Study:

• To describe the preparation of novel adsorbents.
• To evaluate these adsorbents for protein separation from insoluble cell fragments.
• To demonstrate selective protein desorption for purification.

Main Methods:

• Preparation of adsorbents utilizing polyethylene glycol-dextran and polyethylene glycol-phosphate systems.
• Application of adsorbents to remove proteins from disrupted cell mixtures.
• Chromatographic elution for selective protein desorption.

Main Results:

• Adsorbents exhibit high partition coefficients in the tested systems.
• Effective removal of proteins from insoluble cell debris was achieved.
• Selective desorption of proteins in a reduced volume was demonstrated.

Conclusions:

• The developed adsorbents are effective for separating proteins from cell fragments.
• This technique offers a method for selective protein recovery.
• The process allows for protein purification in a concentrated form.