Nanoprecipitation process: From encapsulation to drug delivery

Area of Science:

• Pharmaceutical Sciences
• Materials Science
• Chemical Engineering

Background:

• Conventional drug dosage forms often suffer from poor bioavailability, stability issues, and undesirable sensory properties.
• Nanoparticle drug delivery systems offer a promising alternative to overcome these limitations.
• Nanoprecipitation is a versatile and clean technique for formulating nanoparticles.

Purpose of the Study:

• To review the nanoprecipitation technique for drug encapsulation.
• To highlight its advantages over conventional methods.
• To discuss its application in pharmaceutical and agricultural research.

Main Methods:

• Nanoprecipitation involves polymer precipitation from a solution upon addition of a non-solvent.
• The process includes four key steps: supersaturation, nucleation, growth by condensation, and growth by coagulation.
• Flash nanoprecipitation enables industrial-scale production with good reproducibility.

Main Results:

• Nanoprecipitation is effective for encapsulating both hydrophobic and hydrophilic compounds, including natural products.
• Process and formulation parameters critically influence nanoparticle characteristics.
• Nanoparticles prepared via nanoprecipitation exhibit a biphasic drug release profile: initial burst release followed by prolonged release.
• Biodegradable and non-biodegradable polymers can be utilized for in vivo applications.

Conclusions:

• Nanoprecipitation is a scalable and reproducible method for producing nanoparticles for drug delivery.
• It offers significant advantages in improving drug bioavailability, stability, and enabling controlled release.
• The technique holds potential for commercialization of encapsulated active molecules in various industries.