rancidity

rancidity
See rancid.

* * *

      condition produced by aerial oxidation of unsaturated fat present in foods and other products, marked by unpleasant odour or flavour. When a fatty substance is exposed to air, its unsaturated components are converted into hydroperoxides, which break down into volatile aldehydes, esters, alcohols, ketones, and hydrocarbons, some of which have disagreeable odours. Butter becomes rancid by the foregoing process and by hydrolysis, which liberates volatile and malodorous acids, particularly butyric acid. Saturated fats such as beef tallow are resistant to oxidation and seldom become rancid at ordinary temperatures.

* * *


Universalium. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Rancidity — Ran*cid i*ty (r[a^]n*s[i^]d [i^]*t[y^]), n. [Cf. F. rancidit[ e].] The quality or state of being rancid; a rancid scent or flavor, as of old oil. Ure. [1913 Webster] …   The Collaborative International Dictionary of English

  • rancidity — rancid ► ADJECTIVE ▪ (of foods containing fat or oil) smelling or tasting unpleasant as a result of being stale. DERIVATIVES rancidity noun. ORIGIN Latin rancidus stinking …   English terms dictionary

  • rancidity — noun see rancid …   New Collegiate Dictionary

  • rancidity — fish having a rancid flavour or odour acquired during storage from oxidation or hydrolysis of fat …   Dictionary of ichthyology

  • rancidity — noun The state of being rancid …   Wiktionary

  • rancidity — The state of being rancid. * * * ran·cid·i·ty ran sid ət ē n, pl ties the quality or state of being rancid also a rancid odor or flavor * * * ran·cid·i·ty (ran sidґĭ te) the quality of being rancid …   Medical dictionary

  • rancidity — ran·cid·i·ty || ræn sɪdÉ™tɪ n. moldiness, mustiness; decay, putrefaction …   English contemporary dictionary

  • rancidity — ran·cid·i·ty …   English syllables

  • rancidity — /rænˈsɪdəti/ (say ran siduhtee) noun 1. rancid state or quality. 2. a rancid smell or taste …  

  • rancidity — noun the state of being rancid; having a rancid scent or flavor (as of old cooking oil) • Derivationally related forms: ↑rancid • Hypernyms: ↑decay …   Useful english dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”