Weight Loss Optimization

Understanding Weight Loss

Weight loss during vacuum cooling is primarily due to moisture evaporation, which is the mechanism that drives the cooling process itself. For fresh produce, weight loss of 1-2% is normal and significantly less than forced-air cooling (3-5%). However, excessive weight loss can affect product yield and profitability.

Optimization Strategies

• Pre-cooling with water spray: Adding a fine mist of water before or during vacuum cooling can reduce net weight loss by replacing evaporated water
• Packaging optimization: Using perforated or breathable films can slow moisture loss
• Vacuum level control: Operating at the optimal vacuum level for each product type minimizes unnecessary evaporation
• Temperature management: Cooling only to the required cold chain temperature, not below