Question

Match List-I with List-II. Select the name of bacteria with the dairy product in which it is commonly found.
List-I (Bacteria name):
(A). Staphylococcus aureus
(B). Cronobacter sakazakii
(C). Yeast and Mold
(D). Lactococcus lactis
List-II (Products):
(I). Dahi
(II). Butter
(III). Infant milk food
(IV). Khoa based product
Choose the correct answer from the options given below:

• A. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• B. (A)-(I), (B)-(III), (C)-(IV), (D)-(II)
• C. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
• D. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Hint:

Associate Lactococcus lactis with Dahi (D-I) and the pathogen Cronobacter sakazakii with Infant milk food (B-III) to quickly identify the correct matching option.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Different dairy products are susceptible to specific contamination risks or require specific starter cultures depending on their composition, processing, and storage.

Step 2: Detailed Explanation:
Let us match the microorganisms in List-I with the dairy products in List-II:

• (A) Staphylococcus aureus: Often associated with the contamination of sweet, concentrated (IV) Khoa based products (like peda or burfi) during manual handling, where it can grow and produce heat-stable enterotoxins. Thus, \(A \rightarrow \text{IV}\).

• (B) Cronobacter sakazakii: A notorious foodborne pathogen of serious concern in dry (III) Infant milk food. It is highly resistant to desiccation, and regulatory bodies enforce a strict zero-tolerance policy for it in infant formulas. Thus, \(B \rightarrow \text{III}\).

• (C) Yeast and Mold: Common spoilage organisms that grow on the surface of (II) Butter during storage, causing rancidity, surface discoloration, and off-flavors. Thus, \(C \rightarrow \text{II}\).

• (D) Lactococcus lactis: The primary, beneficial lactic acid bacterium used as a starter culture to ferment milk into traditional (I) Dahi. Thus, \(D \rightarrow \text{I}\).
This results in the matching sequence: (A)-(IV), (B)-(III), (C)-(II), (D)-(I).

Step 3: Final Answer
The correct matching sequence is (A)-(IV), (B)-(III), (C)-(II), (D)-(I).