Question

Bloom strength is a measure for checking the quality of

• A. Binder strength
• B. Suspending agent strength
• C. Emulsifying capacity
• D. Strength of gelatin

Hint:

Higher Bloom value = Firmer Gelatin. Standard range for capsules is 150 to 250 grams.

Answer 1

The Correct Option is D

Step 1: Concept
Bloom strength is a standard test used to measure the cohesive strength of cross-linking that occurs between gelatin molecules.

Step 2: Meaning
It is defined as the weight in grams required to depress a standard plunger into the surface of a 6.67% gelatin gel by 4 mm under controlled conditions.

Step 3: Analysis
High bloom strength (usually 150–250g for capsules) indicates better structural integrity, which is essential for manufacturing hard and soft gelatin capsule shells.

Step 4: Conclusion
Therefore, Bloom strength is exclusively used to check the quality and mechanical strength of gelatin.

Final Answer: (D)