Question

The strong flavoured Koumiss contains approximately__________% lactic acid and __________% alcohol

• A. 0.7, 1.0
• B. 1.0, 0.7
• C. 1.1, 1.8
• D. 1.1, 2.5

Hint:

Remember the classic classification of Koumiss:
- Mild: Low acid, low alcohol (< 1.0%).
- Medium: Moderate acid, moderate alcohol (1.1% to 1.8%).
- Strong: High acid (1.1%), high alcohol (2.5%).

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Koumiss is a traditional fermented dairy beverage prepared from mare's milk, popular in Central Asian countries.
Because mare's milk has a higher lactose content (~6.5%) compared to cow's milk (~4.8%), it undergoes a robust combined lactic and yeast fermentation.
Detailed Explanation:
During Koumiss fermentation, lactic acid bacteria (such as Lactobacillus delbrueckii subsp. bulgaricus) and lactose-fermenting yeasts (such as Kluyveromyces marxianus) act in synergy.
Based on the acidity and alcohol content developed during fermentation, Koumiss is classified into three commercial categories:
1. Mild Koumiss: Contains approximately 0.6% to 0.8% lactic acid and 0.5% to 1.0% ethanol.
2. Medium Koumiss: Contains approximately 0.8% to 1.0% lactic acid and 1.1% to 1.8% ethanol.
3. Strong Koumiss: Contains approximately 1.0% to 1.2% (averaging 1.1%) lactic acid and 1.8% to 2.5% (averaging 2.5%) ethanol.
Strong Koumiss has a sharp, acidic, gas-rich, and distinctly alcoholic flavor profile.
Therefore, strong flavored Koumiss contains approximately 1.1% lactic acid and 2.5% alcohol.
Final Answer:
Strong flavored Koumiss contains approximately 1.1% lactic acid and 2.5% alcohol. Hence, the correct option is (D).