Assertion: unripened persimmon | /r/MadeOf | the soluble tannin shibuol
Facets:
Source sentences:
text: Unripened persimmons contain the soluble tannin shibuol, which, upon contact with a weak acid, polymerizes in the stomach and forms a gluey coagulum, a "foodball" or phytobezoar, that can affix with other stomach matter.