Views: 0 Author: AnHui Chempro Biochemical Limited Publish Time: 2021-08-19 Origin: AnHui Chempro Biochemical Limited
They can be divided in to desired dosage strength without process or formulation changes.
When pellets containing the active ingredient are in the form of suspension, capsules, or disintegrating tablets, they offer significant therapeutic advantages over single unit dosage forms.
They can also be blended to deliver incompatible bioactive agents.
They can also be used to provide different release profile at the same or different sites in the gastrointestinal tract.
Pellets offer high degree of flexibility in the design and development of oral dosage form like suspension,sachet, tablet and capsule.
Pellets disperse freely in gastro intestinal tract (GIT), maximize drug absorption, and minimize local irritation of the mucosa by certain irritant drugs.
Improved flow characteristics: Spheres have excellent flow properties, which can be used in automated processes or in processes where exact dosing is required, e.g. tableting, moulding operations, capsule filling, and packaging.
Coating: Coating of granules is often applied for stabilizing active ingredients in the granule or to control the release of these active ingredients. Typical applications in the pharmaceutical industry are the controlled release medicines. The easiest shape to coat is the sphere due to the absence of edges. It is also the most economical one to coat as no extra coating material is required to fill irregularities in the surface of the granules.
Packing of beds and columns: In certain processes, porous beds or columns are used as chemical reactors. Spherical particles allow the reproduction of beds withalways the same void volume, surface area and permeability. Calculations and predictions of the process characteristics also become easier when round particles are used as many equations are based on flows around symmetrical bodies.
Density increase: Both the true and the bulk density of granules are increased by spheronising. This can improve the process and the packaging.
Marketing: For consumer products, spheronising is sometimes only applied for improved product appearance and marketing reasons.
Hardness and friability: Hardness and friability depend on the internal cohesive forces and surface characteristics. Spheronization increases the hardness and reduces the friability of granules. This will reduce the amount of fines generated during handling or transportation.