Fluidized bed granulation of an ordered powder mixture.

Area of Science:

• Pharmaceutical Sciences
• Materials Science

Background:

• Ordered unit segregation impacts mixture homogeneity, a critical factor in pharmaceutical formulations.
• Using monodisperse carriers to prevent segregation is often economically unfeasible.

Purpose of the Study:

• To investigate fluidized bed granulation as a method to mitigate segregation effects in ordered mixtures.
• To assess the uniformity of minor component distribution and tablet quality after granulation.

Main Methods:

• Studied fluidized bed granulation of a 0.1% ordered mixture.
• Quantified minor component distribution using demixing potential (DP).
• Compressed granules into tablets and determined weight and content coefficients of variation (c.v.).

Main Results:

• Ordered units remained stable during fluidization with no significant loss of adsorbed material.
• Granules exhibited significantly more uniform minor component distribution compared to initial mixtures.
• All tablet batches achieved a weight c.v. ≤ 1.5% and content c.v. ≤ 4.6%.

Conclusions:

• Fluidized bed granulation significantly reduces segregation potential and enhances mixture homogeneity.
• This process offers a viable solution for incorporating small quantities of cohesive materials in pharmaceutical manufacturing.