Grinding is a process involving cutting and crushing the rhizomes into small particles, then sifting it through a series of screens of different mesh sizes to get powder with the desired fineness. For higher quality of turmeric powder, the grinding temperature should be kept as low as possible. Our grinding unit controls the temperature for keeping the volatile taste and aroma compounds and curcumin content. After grinding, the powder passes through different mesh screens until it uniforms into a delicate powder.
Regardless of careful management, it is possible to be contaminated by any particles or contaminants until the grinding process. Yesang Food adopted two patented units from South Korea to completely filter out contaminants:
1) Sorting apparatus of foreign substances,
2) Magnetic sorting apparatus.
The sorting apparatus of foreign substances filter any type of contaminants, including but not limited to metallic substances, small papers, string, vinyl, hair, and small stones. It separates implications larger than 0.5mm at the first stage and removes impurities smaller than 0.5mm.
In addition to the sorting unit, Yesang Food installed a magnetic separator to completely filter the metallic substances. The magnetic sorting machine doubles the magnetism and pick out metallic substances virtually.
Packing & Storing
Turmeric powder is packed in a 20kg air-tightened paper bag inner coated with polyethylene. To maintain the quality of bags, they are stored away from light and kept in dry storage.