Propylene glycol esters of fatty acids

Propylene glycol esters of fatty acids are partial esters of propylene glycol with food-grade fatty acids. They function as emulsifiers and aerating agents in cake mixes, whipped cream products, and certain baked goods, improving foam stability, crumb structure, and moisture retention. They are used in commercially produced cakes and bakery products where consistent texture and extended shelf life are needed.

JECFA's ADI is 25 mg per kilogram body weight per day, evaluated in 1974. These esters are hydrolysed in the gut to propylene glycol and fatty acids. Propylene glycol is metabolised to lactic acid through normal metabolic pathways. The fatty acids enter standard lipid metabolism. No adverse effects have been identified at typical dietary intakes from food additive use.

Propylene glycol esters of fatty acids are approved in the EU, US (GRAS), UK, and most global markets. They are found in commercially produced cakes, whipped toppings, and certain dairy desserts. For healthy adults there are no safety concerns at typical food additive exposures. The propylene glycol component is also used as a general-purpose food additive (humectant) with an excellent safety record.