Assertion: sodium nitrate | /r/AtLocation | cured meats
Facets:
value: as a preservative
type: PURPOSE
value: sometimes
type: TEMPORAL
Source sentences:
text: Sodium nitrate is sometimes added to cured meats and poultry as a preservative and color enhancer.
text: Major sources of sodium nitrites include drinking water and food; sodium nitrate is added to cured meats as a preservative.