Question

Who among the following introduced the basic principle of preserving unsweetened condensed milk by heat sterilization?

• A. Gail Borden
• B. Charles Page
• C. Nicholas Appert
• D. John B. Meyenberg

Hint:

Remember the key distinction:
- Gail Borden = Sweetened Condensed Milk (preserved by sugar).
- John B. Meyenberg = Unsweetened Evaporated Milk (preserved by heat sterilization).

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
The preservation of condensed milk historically developed along two different lines: preservation by adding sugar (sweetened condensed milk) and preservation by thermal sterilization (unsweetened condensed or evaporated milk).

Step 2: Detailed Explanation:
Let us review the historical contributions of the scientists:
- Gail Borden: Patented the process of concentrating milk under vacuum in 1856.
His product was sweetened condensed milk, which relied on high sugar concentration (osmotic pressure) for preservation, not heat sterilization.
- Nicholas Appert: Invented the general process of canning and preserving food using heat in the early 19th century, but did not develop the commercial sterilization process specifically for unsweetened condensed milk.
- John B. Meyenberg: A Swiss-born American, Meyenberg realized that unsweetened condensed milk could be preserved long-term by sealing it in cans and subjecting it to steam sterilization under pressure.
He patented this specific process for preserving unsweetened condensed milk by heat sterilization in 1884.
His invention led to the commercial production of evaporated milk.
Therefore, John B. Meyenberg introduced this basic preservation principle.

Step 3: Final Answer:
John B. Meyenberg introduced the basic principle of preserving unsweetened condensed milk by heat sterilization.