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Formulation and evaluation of dried yeast tablets using different techniques.

Abdullah M Al-Mohizea1, Mahrous O Ahmed, Fahad I Al-jenoobi

  • 1Department of Pharmaceutics, King Saud University, Riyadh, Saudi Arabia. amohizea@ksu.edu.sa

European Journal of Pharmaceutics and Biopharmaceutics : Official Journal of Arbeitsgemeinschaft Fur Pharmazeutische Verfahrenstechnik E.V
|February 3, 2007
PubMed
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Direct compression is the optimal method for producing dried yeast tablets, offering superior disintegration times and organoleptic properties compared to wet granulation and dry granulation. This technique ensures drug content uniformity and preserves yeast fermentation power.

Area of Science:

  • Pharmaceutical Technology
  • Formulation Science

Background:

  • Wet granulation is unfavorable for dried yeast tablets due to moisture-induced color darkening and premature fermentation.
  • Developing stable and effective dried yeast tablets requires careful selection of preparation methods and excipients.

Purpose of the Study:

  • To prepare and evaluate dried yeast tablets using direct compression, dry granulation, and wet granulation techniques.
  • To compare these methods against a commercial product, identifying the most suitable formulation and manufacturing process.
  • To assess the impact of formulation variables on tablet quality, particularly disintegration time.

Main Methods:

  • Preparation of 26 dried yeast tablet formulae using directly compressible vehicles.
  • Evaluation of quality control parameters: weight uniformity, friability, disintegration time, and hardness, adhering to British Pharmacopoeia (B.P.) 1998 limits.

Related Experiment Videos

  • Investigation of four disintegrating agents to optimize disintegration time.
  • Drug content analysis using gas chromatography (GC) to confirm uniformity.

    • Main Results:

    • All prepared tablet batches met B.P. limits for weight uniformity and exhibited good mechanical properties (low friability, acceptable hardness).
    • Direct compression yielded the shortest disintegration times, outperforming dry and wet granulation methods.
    • The optimized direct compression formula demonstrated superior organoleptic properties and equivalent alcohol content compared to commercial yeast tablets.

    Conclusions:

    • Direct compression is the preferred method for manufacturing dried yeast tablets, preserving yeast activity and ensuring rapid disintegration.
    • The study identified an optimal formula with enhanced properties, offering a viable alternative to existing commercial products.