Sun-drying is a traditional method for drying ginger, and its operation is relatively simple. First, select ginger that is free from disease, pests, and damage, wash it, and let it air dry. Then, slice the ginger into 3-5 mm thick slices; avoid slices that are too thin to prevent breakage during drying. Next, evenly arrange the ginger slices in a well-ventilated, sunny place, allowing them to dry naturally with wind and sunlight. This method is inexpensive, but the drying effect is greatly affected by the weather, the drying period is long, and there may be significant nutrient loss.
In contrast, using drying equipment to dry ginger is more efficient and stable. Taking a ginger slice dryer as an example, first, evenly arrange the processed ginger slices on the dryer's trays, avoiding excessive overlapping to prevent affecting the drying effect. Then, set the appropriate drying temperature and time according to the dryer's operating instructions. Generally, the drying temperature is gradually adjusted from low to high, starting at 45-50℃ and then gradually increasing to 65-70℃ to ensure even drying and prevent starch saccharification, spoilage, and stickiness. The drying time depends on the thickness of the ginger slices and the performance of the dryer, typically ranging from several hours to over ten hours. After drying, the ginger slices should be neither too soft nor too burnt, and their moisture content should meet the appropriate standard. Using drying equipment to dry ginger is not only efficient and produces consistent quality, but it also effectively reduces the loss of nutrients.