Question

Maximum limit of iron used in gelatin for manufacturing Soft Gelatin capsule shell should not exceed

• A. 15 PPM
• B. 20 PPM
• C. 25 PPM
• D. 50 PPM

Hint:

Maintaining low heavy metal content, including iron, in gelatin ensures the physical integrity and chemical stability of soft gelatin capsules.

Answer 1

The Correct Option is A

Gelatin is a key raw material used in the manufacture of soft gelatin capsules, acting as the primary film-forming agent. The quality and purity of gelatin are critical to ensure the safety and stability of the final pharmaceutical product. One important parameter is the maximum allowable limit of heavy metals such as iron in gelatin. Iron content in gelatin should be kept minimal to avoid oxidative degradation and discoloration of the capsule shells, which can affect both the appearance and shelf life of the product. According to pharmacopeial standards and pharmaceutical guidelines, the maximum permissible limit of iron in gelatin used for soft gelatin capsules is typically set at 15 parts per million (PPM). Exceeding this limit can lead to catalytic oxidation of capsule contents and impact the mechanical properties of the shell. Therefore, manufacturers strictly monitor and control iron content during gelatin processing and quality testing.

Answer 2

The question asks for the maximum permissible level of iron in gelatin used to manufacture soft gelatin capsule shells. Iron is controlled tightly in gelatin because it can catalyze oxidative breakdown of the capsule's fill and shell.

1. 15 PPM: This is the limit consistently cited in pharmaceutical raw-material specifications for iron content in gelatin intended for soft capsule shells, chosen to keep catalytic metal-driven oxidation to a minimum.
2. 20 PPM: This value is higher than the specification actually used for soft gelatin capsule-grade material and would allow more iron-catalyzed oxidative risk than the accepted limit permits.
3. 25 PPM: This is further still from the accepted limit, allowing an even larger margin for oxidative degradation and shell discoloration than is considered acceptable.
4. 50 PPM: This value is far above the working specification and would be expected to noticeably increase the risk of oxidative degradation of capsule contents.

Since the pharmaceutical specification for gelatin used in soft capsule manufacture calls for the tightest of these four limits to control iron-catalyzed oxidation, the lowest value in the list is the correct one.

Therefore, the correct answer is 15 PPM.