Modified Diatomaceous Earth in Heparin Recovery from Porcine Intestinal Mucosa

Area of Science:

• Biochemistry
• Materials Science
• Chemical Engineering

Background:

• Heparin is a vital anticoagulant glycosaminoglycan crucial for pharmaceutical drug development.
• Efficient and scalable extraction of heparin from natural sources like porcine intestinal mucosa is essential.
• Existing methods for heparin adsorption require cost-effective and improved adsorbent materials.

Purpose of the Study:

• To investigate the efficacy of cationic ammonium-functionalized diatomaceous earth for heparin adsorption.
• To optimize adsorbent properties for maximizing heparin recovery from real biological samples.
• To introduce modified diatomaceous earth with quaternary amines as a novel material for heparin capture.

Main Methods:

• Synthesis of cationic ammonium-functionalized diatomaceous earth with enhanced porosity and surface area.
• Characterization of the modified diatomaceous earth (QDADE) for properties like cationic density and thermal stability.
• Optimization of heparin adsorption conditions including temperature and pH using real porcine intestinal mucosa samples.

Main Results:

• The developed quaternary modified diatomaceous earth (QDADE) demonstrated superior heparin adsorption capacity.
• QDADE adsorbed up to 16.3 mg·g-1 (31%) of heparin from real porcine intestinal mucosa samples.
• Optimized conditions (temperature, pH) enhanced heparin uptake on the modified adsorbent surface.

Conclusions:

• Modified diatomaceous earth with quaternary amines is a promising adsorbent for efficient heparin extraction.
• The enhanced porosity, surface area, and cationic density of QDADE contribute to high heparin recovery.
• This study presents a novel and effective approach for capturing heparin from natural sources.