After researching various literatures, it was found that a certain type of dietary fiber has the effect of absorbing salt,
That dietary fiber contained a large amount of potassium, which is even more restricted than sodium for dialysis patients.
This means it cannot be used by dialysis patients.

We have eliminated raw materials that contain large amounts of potassium and phosphorus,
We will proceed with our considerations with the goal of creating food products that everyone can pick up and use with peace of mind.
From among approximately 30 types of raw materials, the slimy component of seaweed such as kelp and wakame is selected.
"Alginic acid derivatives"I finally arrived.

Alginic acid, the raw material for alginic acid derivatives, is found in the thallus of seaweed and has a structure in which two types of uronic acid, D-mannuronic acid and L-guluronic acid, are linked in a straight chain. The carboxyl groups of uronic acid have high ion exchange capacity and readily bind with sodium ions. Furthermore, alginic acid derivatives are dietary fiber that cannot be broken down by human digestive enzymes and are therefore excreted unchanged.
The safety of alginate has been evaluated by the FAO/WHO and it is considered one of the safest substances.
Furthermore, alginic acid compounds are involved in imparting various properties to food products and are now very familiar, being used in a wide variety of foods such as ice cream, jelly, dressings, and beer.

And these alginates had a remarkable effect.