Starch is obtained naturally through extraction from the grain or root of cassava, a root vegetable. It is often commercially sold in the form of a dry powder and its grade varies based on the type of application it is being used for. However, often it is used in the food industry due to the lack of certain properties that are needed in other industries.
Production of tapioca starch can be separated into 3 different stages, namely preparation and extraction, purification and water removal. In the preparation and extraction process, the cassava roots are washed and peeled, whereby the pulp is strained with the addition of water. Subsequently, purification of the extracted starch is carried out using the process of sedimentation and centrifugation. The last stage involves the removal of water which is carried out through drying.
Adhesive and Glue Industry
Starch makes a good natural adhesive. There are two types of adhesives made from starches, modified starches and dextrins for roll-dried adhesives and liquid adhesives. Tapioca Starch is popular in the adhesive industry due to its appreciable binding capacity due to its high viscosity sticky properties when mixed with water or certain chemicals.
Diverse types of modified starch are used in confectionery for different purposes such as gelling, thickening, texture stabilizing, foam strengthening, crystal growth control, adhesion, film foaming and glazing. Modified tapioca starch is used as a colloid stabilizer in beverages that include solid constituents.
Modified Starch is often used in printing more even and preventing the contamination while printing. Mostly a pregelatinized modified starch is used.
The third stage of paper production produces special condensed paper for book cover, calendar paper and boxes. Thin boiling starches and more sophisticated modified starches are used, or native starch is jet-cooked with enzymes.