Beeswax has long-standing applications in human food and flavoring. For example, it is used as a glazing agent, a sweetener, or as a light/heat source. It is edible, in the sense of having similar negligible toxicity to plant waxes, and is approved for food use in most countries and the European Union under the E number E901. However, the wax monoesters in beeswax are poorly hydrolysed in the guts of humans and other mammals, so they have insignificant nutritional value.[1] Some birds, such as honeyguides, can digest beeswax.