denature

/di:'neitʃə/ Cách viết khác : (denaturate) /di:'neitʃreit/

Thân thiện

A scientist denatures a protein solution by heating it over a Bunsen burner.

Definition

1. Verb (transitive):
   • To alter the natural qualities or structure of something, especially a protein or alcohol, often through heat, chemicals, or radiation, changing its function or properties.
   • To make (a substance, like fissionable material) unsuitable for its original purpose by adding another substance.

Usage and Examples

• Verb:
  • High heat will denature the proteins in an egg, turning it from clear and liquid to white and solid.
  • The laboratory added a bittering agent to denature the ethanol, making it poisonous and undrinkable.
  • Scientists study how acids denature enzymes, causing them to lose their biological activity.

Advanced Usage

• "Denatured alcohol": Ethanol that has been made unfit for human consumption by adding chemicals (like methanol or bitterants), but is still useful as a solvent or fuel.
  • Use denatured alcohol to clean the equipment, not the drinking alcohol from the store.
• The concept is often used metaphorically in social or philosophical contexts to describe the stripping away of natural or essential characteristics.
  • Some critics argue that modern society denatures human relationships.

Variants and Related Words

• Denaturation (noun): The process or result of denaturing.
  • The denaturation of the protein was irreversible.
• Denatured (adjective): Having undergone denaturation.
  • The sample contained denatured collagen.

Synonyms

• Alter
• Deform
• Degrade
• Spoil
• Corrupt (in a metaphorical sense)

Different Meanings / Contexts

1. Biochemistry/Chemistry: The primary meaning refers to disrupting the structure of a protein or nucleic acid, causing it to lose its specific biological function.
   • Context: "The enzyme was denatured by the extreme pH."
2. Chemistry/Industry: To render alcohol unfit for drinking while retaining its value for industrial use.
   • Context: "They denature the alcohol to avoid beverage taxes."
3. Nuclear Physics: To mix a fissionable material with a non-fissionable one to prevent its use in weapons.
   • Context: "The treaty required them to denature the plutonium stockpile."

Học thuật

Verb

1. make (alcohol) unfit for drinking without impairing usefulness for other purposes
2. modify (as a native protein) especially by heat, acid, alkali, or ultraviolet radiation so that all of the original properties are removed or diminished
3. add nonfissionable material to (fissionable material) so as to make unsuitable for use in an atomic bomb