Spray freeze drying: Emerging applications in drug delivery

Area of Science:

• Pharmaceutical Technology
• Materials Science
• Chemical Engineering

Background:

• Spray freeze drying is an emerging technique combining droplet formation, freezing, and sublimation.
• It offers advantages over conventional drying methods, including improved structural integrity and shelf stability.
• Its unique particle characteristics make it highly suitable for advanced drug delivery systems.

Purpose of the Study:

• To detail the manufacturing approaches for spray freeze dried powders.
• To emphasize the application of spray freeze drying in drug delivery systems.
• To provide an overview of other potential applications of this technology.

Main Methods:

• The study focuses on the manufacturing processes inherent to spray freeze drying.
• Analysis of particle properties resulting from the spray freeze drying technique.
• Review of existing and potential applications, particularly in drug delivery.

Main Results:

• Spray freeze drying produces particles with enhanced stability across various administration routes (lungs, nasal, intestinal, skin).
• Particles exhibit sustained release and specificity, outperforming those from conventional drying.
• The technique yields products with superior structural integrity and quality.

Conclusions:

• Spray freeze drying is a promising technology for developing advanced drug delivery systems.
• The unique properties of spray freeze dried particles drive their commercialization potential.
• The technique's versatility extends to applications beyond drug delivery.