Propylene glycol alginate

Propylene glycol alginate partly breaks down into alginic acid and propylene glycol. EFSA based its daily intake value of 55 milligrams per kilogram on the amount of propylene glycol the gum can release. Its exposure calculations stayed below that value, but used maximum permitted concentrations because actual use data were sparse. These calculations do not measure every consumer’s intake or include all sources of propylene glycol.

A small study in five men found no adverse symptoms during 23 days of stepped dosing, although some stool measurements changed. It cannot establish lifelong safety or effects in children. Older animal studies were generally reassuring for genetic and cancer endpoints, but their methods were limited. Very high dietary concentrations impaired growth and survival, and one mouse pregnancy study found maternal toxicity and poorer pregnancy outcomes at a high dose.

A newer single-donor stool-culture experiment found persistent microbial and gene-activity changes after exposure; it did not measure intestinal injury or establish the amount reaching a person’s colon. Current food-use evidence leaves uncertainty about long-term outcomes, combined exposure and the quality of older studies. Purity standards and category-specific food limits remain relevant.

Research reviewed on September 5, 2026 · 12 sources