1. Producing process of native tapioca starch:
The method of producing tapioca starch includes numerous small steps, but generally the process comprises of 6 expansive steps
Firstly, cassava tubers are blended and washed, cut and ground
Secondly, discharge crushed cassava into a starch extractor to extricate starch milk.
Thirdly, starch milk will be made to separate into two layers, those are fluid drifting on the surface and thick starch solution.
Next, people evacuate the supernatant liquid layer by centrifugation and the obtained thick slurry is dehydrated to diminish its moisture by vacuum aspirator.
Then, The starch cake is mechanically reduced in size to make better particles. After that, people dry it by using mechanical dryer to decrease moisture. The dried item will proceed to be crushed to the specified particle size (if necessary).
And finally, packing starch suitably.
The bellowing diagram is producing process of native tapioca starch:
2. Methods to modify tapioca starch:
We have 2 kinds of modified tapioca starch methods: those are physical and chemical method.
– Physical method: It is a method of pure starch denaturation using physical forces such as pressing, compressing and gelatinizing effect on starch to change some of its properties to suit the application, Modified starch products of this method are gelatinized starch, moist heat-treated starch.
– Chemical method: A method of using the necessary chemicals to change the properties of starch, the main product of the chemical denaturation method is the starch to treat acid, ether, starch and estehydrate, phosphate.
In addition, these are chemical methods in starch denaturation technology:
+ Modify by acid
+ Modify by alkaline
+ Transformations by creating horizontal links
+ Transfiguration by adding phosphate groups
+ Modify by oxidation
+ Modify by combination treatment to collect colloidal starch
