Q1. Explain the different factors that influence the quality and yield of khoa. Describe the continuous methods of khoa manufacture, evaluating the merits and demerits of each method.
- Khoa quality and yield are primarily determined by milk fat (higher is better), SNF content, and low acidity.
- Fresh milk with 0.14-0.16% lactic acid is ideal; high acidity causes granular, hard khoa and reduced yield.
- Manufacturing factors like heating rate, vigorous stirring, and accurate end-point determination are critical for texture and moisture.
- Scraped Surface Heat Exchanger (SSHE) is the main continuous method for khoa, often with milk pre-concentration.
Answer: Khoa, a heat-desiccated milk product, has its quality and yield significantly influenced by various factors related to raw milk properties and manufacturing practices. Understanding these is crucial for producing a consistent and high-quality product. ### Factors Influencing Quality and Yield of Khoa **1. Raw Milk Quality:** **Fat Content:** This is perhaps the most critical factor. Higher fat content in milk directly correlates with higher khoa yield and improved quality attributes like rich...