MANUFACTURE AND USE OF A COMPOSITE STRUCTURE CONTAINING PRECIPITATED CARBONATE
A method of producing a composite structure, which is formed of a polysaccharide body, on which carbonate is precipitated, by forming a carbonate ion solution; mixing polysaccharide, in a form having free hydroxyl groups on its surface, into the carbonate ion solution, whereby a carbonate polysaccharide slurry is formed; and precipitating carbonate salt from the slurry into the polysaccharide. Also a carbonated polysaccharide product is claimed.