A new process for drug loaded nanocapsules preparation using a membrane contactor

Area of Science:

• Pharmaceutical Technology
• Materials Science
• Chemical Engineering

Background:

• Nanocapsules are advanced drug delivery systems with significant therapeutic potential.
• Current methods for nanocapsule preparation often face challenges in scalability for industrial production.
• Efficient and scalable methods are crucial for translating nanocapsule technology from laboratory to market.

Purpose of the Study:

• To develop and characterize a novel, scalable process for preparing drug-loaded nanocapsules.
• To demonstrate the efficacy of a membrane contactor system for nanocapsule fabrication.
• To evaluate the production of nanocapsules loaded with model drugs, indomethacin and vitamin E.

Main Methods:

• Utilized a membrane contactor system employing the nanoprecipitation method.
• Pressed an organic phase (solvent, polymer, oil, drug) through an ultrafiltration membrane.
• Circulated an aqueous phase (water, surfactant) to sweep away forming nanocapsules.

Main Results:

• Successfully prepared drug-loaded nanocapsules with mean diameters of 240 nm (indomethacin) and 230 nm (vitamin E).
• Achieved high production fluxes (0.6 m³/h·m²) and significant volumes (1.8 x 10⁻³ m³) in short times (8 min).
• Demonstrated successful drug loading with model compounds using specific membrane pore size and operating conditions.

Conclusions:

• The membrane contactor offers a highly scalable and efficient method for industrial nanocapsule production.
• This process overcomes limitations of existing methods, enabling large-scale manufacturing of drug-loaded nanocapsules.
• The technology holds promise for the commercialization of nanocapsule-based drug delivery systems.