IGNOU BPVI 15 2026 - Describe the various steps involved in spray drying of milk. Explain t

Question

Describe the various steps involved in spray drying of milk. Explain the purpose of condensing and homogenization of milk during the manufacture of dried milk.

06 Mar 2026

Answer :

Word Count : 466

Spray drying is a widely used method for converting liquid milk into milk powder, and it involves several critical steps to ensure product quality, stability, and nutritional retention. The first step in the spray drying process is preparation of milk, which typically includes the selection of high-quality raw milk, clarification to remove dirt and debris, and standardization to adjust the fat content according to the desired type of milk powder, such as whole milk powder or skimmed milk powder. This ensures uniformity in the composition of the final product. Once the milk is standardized, the next step is pasteurization, which is carried out to destroy pathogenic microorganisms and extend the shelf life of the product. Pasteurization is crucial because it ensures the microbiological safety of the milk and prevents spoilage during storage of the powder. After pasteurization, the milk undergoes condensation or concentration. This step involves reducing the water content of the milk to

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