Process flow of solidified yogurt production line

The yogurt production process involves several key steps to ensure high-quality results:

1. **Raw Material Preparation:**

- Use raw milk with a fat content of 0.5% to 3.0%.

- Purify and standardize the milk, then add ingredients like sucrose.

2. **Preprocessing:**

- Preheat the milk to 50–60°C, then homogenize it at 15–20 MPa.

- Sterilize at 90–95°C for 5–10 minutes or at 118–120°C for 3–5 seconds.

3. **Cooling and Inoculation:**

- Cool the mixture to 43–45°C, then add 2–5% inoculum.

4. **Fermentation:**

- Ferment at 42–43°C for 2.5–4 hours.

- Cool the yogurt and allow post-ripening at 2–7°C.

This process ensures high-quality yogurt with a smooth texture and excellent shelf life.