Turmeric processing typically involves the following steps:
Turmeric plants are harvested once the leaves start to dry and turn yellow. The roots are then separated from the plant.
The turmeric roots are washed to remove dirt, stones, and other impurities. This can be done manually or using a machine called a washing drum.
The cleaned turmeric roots are boiled in water for about 45 minutes to an hour. This process helps to soften the roots and makes it easier to peel off the skin.
Once the roots have been boiled, they are dried in the sun for several days until they are completely dry. This step can also be done using a machine called a dryer.
After drying, the turmeric roots are polished to remove the outer layer of skin. This can be done using a machine called a polishing drum.
The polished turmeric roots are then ground into a fine powder using a machine called a grinder. The resulting turmeric powder can be used in cooking, as a dye, or as a medicinal herb.
Overall, the machines used in turmeric processing include washing drums, dryers, polishing drums, and grinders.