Along with many of McDonald's sauces, both the cilantro lime glaze and the orange glaze contain propylene glycol alginate.

These enamel matrix proteins when suspended in a thickening agent (propylene glycol alginate - PGA) are retained on root surfaces for up to two weeks.

Objective To explore the neuroprotective role of propylene glycol alginate sodium sulfate (PSS) following cerebral ischemic reperfusion in rats.