Question

The bloom strength is directly proportional to:

• A. Measure of the strength and stiffness of the gelatin
• B. Density
• C. Molecular weight
• D. Viscosity

Hint:

- Bloom strength is a measure of gelatin strength, primarily influenced by molecular weight. 
- A higher molecular weight results in a stronger and stiffer gelatin gel. 
- Viscosity and density influence the texture, but molecular weight is the key factor for bloom strength.

Answer 1

The Correct Option is C

Bloom strength refers to the measure of the gel strength of gelatin, which is defined by the force required to push a standard probe into a gelatin sample. It is a critical parameter used to assess the quality and consistency of gelatin. Bloom strength is directly proportional to the molecular weight of the gelatin. The higher the molecular weight, the more intermolecular forces there are between the polymer chains, leading to a stronger and stiffer gel. As the molecular weight increases, the gelatin network becomes more rigid, which increases its ability to hold the structure and hence results in higher bloom strength. 

Why Other Options Are Incorrect: - (A) Measure of the strength and stiffness of the gelatin: This option refers to the result of high bloom strength, but bloom strength itself is specifically influenced by molecular weight. 
- (B) Density: While density may affect some properties of materials, it is not directly proportional to bloom strength. 
- (D) Viscosity: Viscosity refers to the flow characteristics of a gelatin solution and is not the primary factor determining bloom strength. 

Thus, the correct answer is that bloom strength is directly proportional to the molecular weight of the gelatin.