Question

What is the correct sequence of evaluation according to ICMR-DBT guidelines related to probiotics
(A). Safety assessment of strain
(B). Functional characterization of strain
(C). Effectiveness assessment of strain
(D). Efficacy assessment of strain

• A. (A), (B), (C), (D)
• B. (A), (C), (B), (D)
• C. (B), (A), (D), (C)
• D. (C), (B), (D), (A)

Hint:

To remember this sequence, use the logical order of testing:
1. Perform basic test-tube screenings (Functional)
2. Ensure it is safe in animal models (Safety)
3. Prove it works in clinical trials (Efficacy)
4. Monitor its commercial market performance (Effectiveness)

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The Indian Council of Medical Research (ICMR) together with the Department of Biotechnology (DBT) developed guidelines to regulate and evaluate probiotic strains used in food products in India.
These guidelines outline a specific, logical sequence of scientific steps required to validate the safety and health claims of any candidate strain.
Detailed Explanation:
The systematic evaluation sequence specified in the ICMR-DBT guidelines is as follows:
1. Strain Identification: Genotypic and phenotypic identification to establish the specific strain designation.
2. Functional Characterization (B): In vitro tests to demonstrate probiotic potential (e.g., acid and bile tolerance, cell surface hydrophobicity, competitive exclusion, and antimicrobial activity).
3. Safety Assessment (A): Evaluation of potential virulence genes, hemolytic activity, antibiotic resistance profiles, and animal toxicity studies (acute and sub-acute testing) to verify the strain is non-pathogenic.
4. Efficacy Assessment (D): Execution of well-designed, randomized, double-blind, placebo-controlled human clinical trials to substantiate specific health benefits in target populations.
5. Effectiveness Assessment (C): Phase IV post-market surveillance to monitor long-term safety, viability, and performance under commercial shelf-life conditions.
Thus, the correct chronological sequence of evaluation is (B) \(\rightarrow\) (A) \(\rightarrow\) (D) \(\rightarrow\) (C).
Final Answer:
The correct sequence of evaluation is (B), (A), (D), (C). Hence, the correct option is (C).