Assertion: polysaccharide's group | /r/HasProperty | introduced as functional groups
Facets:
value: to the raw material
type: TRANSITIVE-OBJECT
Source sentences:
text: In fact, such pretreatments are necessary in the processes previously proposed by the present applicant, and hydroxyl groups or carboxyl groups need to be introduced as functional groups to the raw material, because cellulose, chitin, and chitosan are insoluble in water, and cannot produce a desired gel by exposure to radiation.