Assertion: polysaccharide | /r/HasAspect | bioactivitie
Facets:
value: in order to reduce their molecular weight
type: PURPOSE
value: before treatment
type: TEMPORAL
Source sentences:
text: Ever since polysaccharides were first found to have bioactivities and applied to clinical practice (Goebel and Adams 1943 ; Hassid and others 1943 ), many scholars have devoted research to polysaccharides from different sources.
text: In summary, physical modification is mainly used for the modification of polysaccharides, which already hold bioactivities before treatment in order to reduce their molecular weight and better release those bioactivities.
text: Among these, types of glycosidic bond, ways of connections, and monosaccharide compositions are the most important, as they are the key to determine whether the polysaccharides have bioactivities, while others can only affect the levels of bioactivities.