Question

Which polymer is used in the sealing step of sugar coating?

• A. Poly acrylic acid
• B. Shellac
• C. Poly caprolactone
• D. Chitin

Hint:

In sugar coating, Shellac is the go-to sealing agent for its moisture resistance and film-forming properties.

Answer 1

The Correct Option is B

Shellac is commonly used in the sealing step of the sugar coating process in tablet formulation. It acts as a moisture barrier and provides a glossy finish. The sealing layer is applied before sub-coating and is critical to maintaining tablet integrity by protecting the core from moisture.