Origin:
Commercially synthesised from calcium hydroxide and carbon monoxide. Present in nature as formic acid (see 236)
Function & characteristics:
Used as a preservative against microorganisms.
Products:
Fruit juices, non-alcoholic drinks, preserved vegetables, etc.
Acceptable Daily Intake:
Up to 3 mg/kg body weight.
Side effects:
It is metabolised by the liver and excreted. High concentrations are diuretic.
Dietary restrictions:
None – formic acid and formates can be consumed by all religious groups, vegans and vegetarians.
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