{"id":21445,"date":"2024-11-20T15:28:56","date_gmt":"2024-11-20T15:28:56","guid":{"rendered":"https:\/\/makingpharmaindustry.it\/?p=21445"},"modified":"2025-01-10T10:48:43","modified_gmt":"2025-01-10T10:48:43","slug":"batch-vs-continuous-in-tablet-production","status":"publish","type":"post","link":"https:\/\/makingpharmaindustry.it\/en\/manufacturing\/technology\/batch-vs-continuous-in-tablet-production\/","title":{"rendered":"Batch vs. continuous in tablet production"},"content":{"rendered":"

In the pharmaceutical manufacturing landscape, the choice between batch and continuous manufacturing processes is a crucial challenge for operational efficiency and final product quality. A study published in the International Journal of Pharmaceutics<\/a> compared the two models applied to tablet manufacturing revealing howmaterial flow dynamics play a crucial role in determining consistency and performance of the final product.<\/strong><\/p>\n

In thebatch process, the high variability in flow is reflected in the final quality of the tablets<\/strong>, which becomes equally variable, although with careful pre-mixing the API concentration is more stable. Overall, the researchers explain, optimizing the choice of excipients and process settings remains the most effective way to optimize the results of both methods.<\/p>\n

The study compared trials adopting a wide range of configurations<\/strong>: twenty formulations including ten low-dose (1% w\/w) and ten high-dose (40% w\/w), combined with a variety of different excipients.<\/p>\n

Mass of Tablets<\/h2>\n

Analysis of the ability of the materials to flow and compress effectively in the two processes highlighted the crucial role of flow dynamics. The researchers evaluated several aspects of the behavior of powder materials (such asflowability, filling uniformity, permeability and compressibility<\/strong>) by verifying their impact on key parameters of tablet quality, such as mass variability (\u03c3Mass) and tensile strength (\u03c3TS)<\/strong>.<\/p>\n

In batch processes, variability in tablet mass was generally higher<\/strong> than in continuous processes, especially at high concentrations of active ingredient.<\/p>\n

The highest values of variability were recorded for formulations containing more cohesive fillers<\/strong>, such as microcrystalline cellulose (MCC), while the more flowable and less compressible ones (e.g., co-processed lactose-lactitol 40LL and anhydrous lactose 22AN) showed the lowest levels. In detail, the variability observed was:<\/p>\n

    \n
  • 1% active ingredient<\/strong>: Minimum 0.60%, Maximum 1.50%<\/li>\n
  • 40% active ingredient<\/strong>: Minimum 1.80%, Maximum 5.70%<\/li>\n<\/ul>\n

    For the continuous process,<\/strong> the observed variability was:<\/p>\n

      \n
    • 1% active ingredient<\/strong>: Minimum 0.50%, Maximum 1.20%<\/li>\n
    • 40% active ingredient<\/strong>: Minimum 1.30%, Maximum 4.30%<\/li>\n<\/ul>\n