Step 1: Concept Overview:
Cheesemaking is a precise process where milk is transformed into cheese through a series of specific steps. The initial steps are focused on preparing the milk for coagulation.
Step 3: Step-by-Step Breakdown:
1. (A) Standardization: Raw milk is first standardized. This involves adjusting its fat-to-protein ratio to ensure consistent cheese quality.
2. (B) Pre-heating and (D) Pasteurization: The standardized milk undergoes heat treatment. It's pre-heated to the required temperature and then held at that temperature for a specific duration (Pasteurization) to eliminate harmful microorganisms and spoilage enzymes. This is an essential food safety measure.
3. After pasteurization, the milk is cooled to the optimal temperature, around 30-32\(^{\circ}\)C for cheddar, to facilitate the growth of the starter bacteria.
4. (C) Addition of starter culture: Once the milk reaches the correct temperature, the starter culture (lactic acid bacteria) is introduced. These bacteria ferment lactose into lactic acid, crucial for coagulation and cheese development.
The sequence (A) \(\rightarrow\) (B) \(\rightarrow\) (D) \(\rightarrow\) (C) is the only correct order. Pasteurization must precede the addition of live cultures to prevent the heat from killing them.
Step 4: Conclusion:
The correct sequence for the initial steps of cheddar cheese production is Standardization \(\rightarrow\) Pre-heating \(\rightarrow\) Pasteurization \(\rightarrow\) Addition of starter culture, corresponding to the order (A), (B), (D), (C), which is option (A).