rancidity

/ræn'siditi/ Cách viết khác : (rancidness) /'rænsidnis/

Thân thiện

The oil in the old bottle has developed rancidity.

Definition

Noun: 1. The state or property of being rancid: The condition of a fat or oil having undergone decomposition, resulting in an unpleasant smell and taste. 2. A rancid smell or flavor: The specific offensive odor or taste characteristic of spoiled fats or oils.

Usage

Rancidity is an uncountable noun used to describe the chemical spoilage of fats and oils. It is most commonly used in contexts related to food science, cooking, and food storage. * The primary cause of rancidity is oxidation. * You can detect rancidity by its sharp, unpleasant smell. * Proper storage helps prevent rancidity in nuts and cooking oils.

Examples

• General Use:
  • The rancidity of the butter made it unsuitable for baking.
  • Exposure to air accelerates the rancidity of vegetable oils.
  • A trained nose can immediately identify the rancidity in old potato chips.
• Scientific/Technical Context:
  • The experiment measured the rate of rancidity development under different light conditions.
  • Antioxidants are added to food products to delay rancidity.

Advanced Usage

• "onset of rancidity": The point at which a fat or oil begins to spoil.
  • Refrigeration can significantly delay the onset of rancidity in whole-grain flours.
• "hydrolytic rancidity" vs. "oxidative rancidity": Specific types of fat spoilage. Hydrolytic rancidity involves the breakdown of fats by water and enzymes, often producing a soapy flavor. Oxidative rancidity involves reaction with oxygen, producing stale, paint-like odors.

Variants and Related Words

• Rancid (adjective): Having the unpleasant smell or taste of spoiled fat or oil.
  • The nuts tasted rancid.
• Rancidness (noun): A less common synonym for .
• Rancidify (verb, rare): To make or become rancid.

Synonyms

• Putridity (though this is more general for all rotting matter)
• Foulness (general)
• Staleness (can be more general, not specific to fats)
• Spoilage (general)

Antonyms

• Freshness
• Sweetness (in the context of oil flavor)

Học thuật

Noun

1. the state of being rancid; having a rancid scent or flavor (as of old cooking oil)