Question

Match List-I with List-II

List-I	List-II
(A) Introduction of starter cultures in 1905 in England	(I) Joseph Lister
(B) First time use of starter culture for developing flavour and aroma in butter in 1890	(II) J. Stubbs
(C) Introduction of commercial cultures for the first time	(III) Storch and Conn
(D) Discovery of Milk bacterium	(IV) Hansen

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

Hint:

Joseph Lister's isolation of Bacterium lactis in 1873 was a milestone in biology, representing the first time a pure bacterial culture was obtained. This links (D) with (I).

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
This matching question is based on the historical milestones and scientific discoveries that shaped modern dairy microbiology and industrial culture systems.
Detailed Explanation:
Let us correlate the historical discoveries in List-I with the scientists in List-II:
- (A). Introduction of starter cultures in 1905 in England matches with (II). J. Stubbs: J. Stubbs introduced the application of specific lactic acid starter cultures in English cheese factories in 1905.
- (B). First time use of starter culture for developing flavour and aroma in butter in 1890 matches with (III). Storch and Conn: Albert Storch (in Denmark) and Herbert Conn (in the US) independently demonstrated that pure cultures of acid and aroma-producing bacteria could improve butter flavor.
- (C). Introduction of commercial cultures for the first time matches with (IV). Hansen: Christian Hansen's laboratory in Denmark pioneered the industrial production and commercial distribution of standardized, reliable dairy cultures.
- (D). Discovery of Milk bacterium matches with (I). Joseph Lister: In 1873, Joseph Lister isolated the first-ever pure bacterial culture, which he named Bacterium lactis (now Lactococcus lactis), from sour milk.
Combining these: (A) - (II), (B) - (III), (C) - (IV), (D) - (I).
Final Answer:
The correct matching sequence is (A) - (II), (B) - (III), (C) - (IV), (D) - (I). Hence, the correct option is (A).