Denatured alcohol vs methanol. Acid does denature protein -- it unwinds the tightly balled strands -- and that does make meat softer. We’ll also explain what you should do if you or somebody else consumes one of them. Click for more definitions. The protein, in this case, beta-lactoglobulin, a milk protein, is first denatured by high temperatures in an acidic solution. : to make (alcohol) unfit for drinking (as by adding an obnoxious substance) without impairing usefulness for other purposes. To render unfit to eat or drink without destroying 4 meanings: 1. 2. Sep 24, 2025 ยท Denatured alcohol is ethanol or alcohol that has an added toxic chemical, which makes it unsafe for humans to consume it. Denatured alcohol is used identically to ethanol itself but only for applications that involve fuel, surgical and laboratory stock. de·na·tured , de·na·tur·ing , de·na·tures 1. puoosrjjc45yma14opxwkswecfmtoi9swx0teljvnnusj