Question

In the process of sugar coating, to prevent moisture penetration into the tablet core, which one of the following step is performed?

• A. Seal Coating
• B. Subcoating
• C. Syrup Coating
• D. Polishing

Answer 1

The Correct Option is A

The process of sugar coating tablets involves several steps, each serving a specific purpose to enhance the tablet's appearance, taste, and protection. One critical step in this process is to prevent moisture from penetrating the tablet core, which is accomplished through seal coating.

1. Seal Coating: This is the initial step in the sugar coating process. Seal coating is designed to create a moisture barrier around the tablet core. By applying a waterproof layer, seal coating helps protect the core from moisture, which can compromise the stability and efficacy of the tablet. Therefore, it ensures the integrity of the tablet until its use. This step is crucial for tablets that contain hygroscopic (moisture-absorbing) components.
2. Subcoating: After seal coating, subcoating layers are added to rapidly increase the tablet's size. This step prepares the tablet for subsequent syrup coats but does not primarily prevent moisture penetration.
3. Syrup Coating: These layers involve multiple applications of sucrose-based syrups to build up the final tablet weight and achieve smoothness. While they add to the aesthetic quality, they don't provide significant moisture protection.
4. Polishing: The final step, where waxes are applied to achieve a glossy appearance. Polishing enhances the tablet's look but does not contribute to moisture prevention.

In conclusion, the step specifically performed to prevent moisture penetration is seal coating. This step is fundamental to ensuring that the internal components of the tablet remain stable and effective throughout its shelf life.