Mushrooms, with their high water content and susceptibility to oxidation, require precise preservation conditions. While they last only 2-3 days at room temperature, cold storage at 0-5°C can extend their shelf life to 15-30 days. With controlled atmosphere (CA) technology, this can be further prolonged to 45 days or more by regulating temperature, humidity, and gas composition (e.g., O₂ and CO₂ levels). This inhibits respiration, microbial growth, and browning while maintaining firmness and quality.
Cost Estimates for Mushroom CA Cold Storage
The cost of building a mushroom-specific CA cold storage facility depends on factors like size, configuration, insulation materials, and equipment choices. Larger facilities generally offer lower costs per cubic meter. Below are estimated costs for different sizes
Storage Volume (m³) | Estimated Cost (RMB) | Approximate Cost (USD)* |
---|---|---|
300 m³ | ~ ¥180,000 | ~ $24,800 |
500 m³ | ~ ¥200,000 | ~ $27,600 |
1,000 m³ | ~ ¥300,000 | ~ $41,400 |
1,500 m³ | ~ ¥400,000 | ~ $55,200 |
2,000 m³ | ~ ¥500,000 | ~ $69,000 |
2,500 m³ | ~ ¥600,000 | ~ $82,800 |
5,000 m³ | ~ ¥1,200,000 | ~ $165,600 |
Note: USD estimates are based on an exchange rate of 1 USD ≈ 7.25 RMB. Costs may vary based on customization, location, and equipment brands.
Key Factors Influencing Cost
1.Size and Scale: Larger facilities reduce per-unit costs but require higher initial investment.
2.Temperature and Gas Precision: CA technology demands advanced systems to maintain optimal conditions (e.g., O₂: 2%-5%, CO₂: <5%).
3.Equipment Configuration:
- Compressors: High-efficiency brands (e.g., Bitzer, Emerson) enhance reliability but increase costs.
- Insulation: Polyurethane panels (100mm–150mm thick) with B1 fire rating ensure energy efficiency.
- Control Systems: Automated monitoring for temperature, humidity, and gas levels.
4.Additional Features: Partitioning, pre-cooling areas, humidity control, and backup power systems add to expenses.