Wax Coating on Fruits and Vegetables
Dec 29, 2011
Conventionally grown fruits and vegetables are often waxed to prevent moisture loss, protect them frombruising during shipping, and increase their shelf life.
When purchasing non-organic fruits and vegetables, you should ask your grocer about the kind of wax used on their surface even if you are going to peel it; carnauba wax (from the carnauba palm tree), beeswax, and shellac (from the lac beetle) are preferable to petroleum-based waxes, which contain solvent residues or wood rosins.
Yet, it is not just the wax itself that may be of concern but the other compounds often added to it - ethyl alcohol or ethanol for consistency, milk casein (a protein linked to milk allergy) as a film former or soap as a flowing agent.