Assertion: antacid's acid | /r/HasProperty | polymeric material
Facets:
Source sentences:
text: Magnesium alginate, one of the essential materials for use in the present invention, can be prepared from alginic acid, which, like its salts such as sodium alginate, is a polymeric material composed of 1,4' linked residues of α-D-mannuronic acid and β-L-guluronic acid.