Step 1: Understanding the Concept:
Food Safety and Standards Regulations standards for heat-desiccated milk products: FSSAI (FSSR 2011) mandates that Khoa Mawa shall contain a minimum total solids content of 65.0% (m/m) (maximum moisture 35.0% m/m) and minimum 30.0% milk fat on dry matter.
Key Formula or Approach:
\[ \text{FSSAI Standards for Khoa: } \text{Moisture} \le 35.0\% \implies \mathbf{\text{Total Solids (TS)}} \ge \mathbf{65.0\% \text{ (m/m)}} \quad (\text{Fat on Dry Matter} \ge 30.0\%) \]
Step 2: Detailed Explanation:
Under the Food Safety and Standards Authority of India (FSSAI) Regulations, 2011 (Section 2.1.15 for Khoa Mawa):
- Khoa is the product obtained by rapid desiccation of whole milk, standardized milk, or skim milk:
1. Maximum Moisture Content: Shall be NOT more than 35.0% (m/m).
2. Minimum Total Solids Requirement: Calculated as $100\% - \%\text{ Moisture} = 100 - 35 = \mathbf{65.0\% \text{ (m/m)}}$ (B).
3. Milk Fat Content (Dry Matter Basis): Shall be NOT less than 30.0% (m/m) for standard Khoa (and $< 3.0\%$ for Dhap/Skim milk Khoa).
Step 3: Final Answer:
Therefore, the minimum total solids requirement for Khoa is 65%, corresponding to option (B).