Assertion: collagen | /r/HasProperty | the product
Facets:
Source sentences:
text: The collagen solubilized by enzyme mentioned herein is the product obtained by pretreating the collagen material with an aqueous solution containing sodium hydroxide and sodium sulfate and by solubilizing the pretreated collagen material with a proteinase (Pronase, registered trade name of Kaken Kagaku Co. Ltd.) at a pH valve of 9.