Definition:
The third step in the coffee supply chain is the storage of processed coffee beans.
Explanation:
After processing, coffee beans need to be stored properly to maintain their quality. This involves keeping the beans in a cool, dry place, away from direct sunlight and moisture. Proper storage helps prevent the beans from going stale or developing mold. Beans are often stored in jute bags or airtight containers to preserve freshness.
Real-Life Application:
- In Ethiopia, small farmers often store their beans in traditional jute bags, which allow air circulation and prevent mold. These bags are typically kept in well-ventilated storage areas to maintain quality. Additionally, many cooperatives in Ethiopia have begun using GrainPro bags, which are hermetic storage solutions that protect the beans from moisture, pests, and mold, thereby extending shelf life.
- In Brazil, large-scale producers use advanced storage methods to ensure the best quality. Beans are often stored in climate-controlled warehouses where temperature and humidity are carefully regulated. These warehouses use state-of-the-art ventilation systems to maintain optimal conditions. Beans are packed in GrainPro or similar high-barrier bags before being placed in large bulk containers or palletized for easier handling and transport.
For optimal coffee storage, the following conditions are generally recommended:
Humidity:
- Relative humidity should be kept between 60-65%. It’s crucial to avoid high humidity levels that can lead to mold growth and spoilage, while too low humidity can cause beans to dry out and degrade in quality.
Bean Moisture:
- The moisture content of green coffee beans should be maintained between 11-12%. This range helps to ensure that the beans are neither too wet (risk of mold) nor too dry (risk of quality degradation).
Temperature:
- The storage temperature should ideally be between 15-25°C (59-77°F). Keeping the temperature within this range helps preserve the beans’ quality by minimizing the risk of condensation and mold growth.
These conditions help maintain the quality and freshness of coffee beans during storage, ensuring they reach roasters in the best possible state.
Multiple Choice Review:
1. Why is proper storage important for coffee beans?
- a) To enhance their flavor
- b) To prevent staleness and mold
- c) To make them easier to transport
- d) To change their color
2. Which of the following is a recommended storage method for coffee beans?
- a) In direct sunlight
- b) In a cool, dry place
- c) In a humid environment
- d) In an open container
3. What type of bags are traditionally used to store coffee beans?
- a) Plastic bags
- b) Jute bags
- c) Paper bags
- d) Metal containers
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