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Moisture, temperature, and relative humidity are the key factors that influence the growth of mold and pests in stored raw materials. When raw materials are placed in storage, they should be sorted by variety and batch to ensure proper management. The stacking height of grains and other materials should not be too high, and there should be a space of 20–50 cm between stacks and walls, as well as between stacks themselves, to allow for better air circulation and heat dissipation. For long-term storage of seasonal or hygroscopic materials, it is recommended to place a layer of wood about 8–10 cm high beneath the pile to prevent moisture absorption. During summer, ventilation should be carried out based on weather conditions to maintain optimal storage environments. Any damage to the warehouse should be repaired promptly to prevent leaks and water seepage.
In general, the use of raw materials should follow the principle of "fast in, fast out," especially for those that are not resistant to long-term storage. Depending on the moisture content and level of mold contamination, batches should be used accordingly. If warehouse conditions are poor, it's advisable not to store large quantities of raw materials. Instead, purchase and use them as needed to avoid spoilage.
It’s also important to maintain cleanliness and hygiene in the warehouse. Regular cleaning should be done to remove any spilled materials and dust generated during loading and unloading. This helps prevent moisture accumulation, mold growth, and pest infestation. Any raw materials that have already started to mold should be moved quickly to prevent them from becoming a source of contamination and infecting other materials. By following these practices, the quality and safety of stored raw materials can be significantly improved.