ricinoleicadj.
/rʌɪsɪnəˈliːɪk/, /ˌrʌɪsɪnəˈleɪɪk/, /ˌrɪsɪnəˈliːɪk/, /ˌrɪsɪnəˈleɪɪk/, U.S. /ˌraɪs(ə)nəˈliɪk/, /ˌraɪs(ə)nəˈleɪɪk/, /ˌrɪs(ə)nəˈliɪk/, /ˌrɪs(ə)nəˈleɪɪk/ Chemistry.
ricinoleic acid n. a crystalline unsaturated fatty acid whose glyceride (ricinolein) is the main component of castor oil.Systematic name: 12-hydroxy-9-cis-octadecenoic acid; C18H34O3.
ΘΚΠ
the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > from seeds
ricinic acid1827
ricinoleic acid1847
tiglic acid1875
1847 C. Morfit Chem. Soap & Candles viii. 97 A soap of castor oil, when decomposed by a mineral acid, gives two solid and one liquid oily acid..3d. Ricinoleic or elaïodic acid, a yellowish-colored liquid at 32° F.
1915 A. P. Mathews Physiol. Chem. iii. 72 Castor oil may owe its cathartic action to the ricinoleic acid,..an oxidized oleic acid which is especially active when in a free state, as it is in the intestine.
1949 R. W. Schwartz & J. W. Perry Surface Active Agents I. iii. 50 Ricinoleic acid on heating forms inner esters between the 12-hydroxy group and the carboxy group.
1997 Lett. Appl. Microbiol. 25 113 Most industrial processes use the bioconversion of ricinoleic acid by yeasts to produce γ-decalactone.
Derivatives
riciˈnoleamide n. [compare earlier ricinolamide n. at ricinolic adj. Derivatives] the amide of ricinoleic acid.Formula: C18H35NO2.
ΚΠ
1940 U.S. Patent 2,216,827 2/2 Monophenyl ricinoleamide.
1949 Jrnl. Amer. Chem. Soc. 71 3019/2 Since ricinoleic acid is difficult to purify and is reported to be unstable, no attempt was made to prepare ricinoleamide from it.
1993 Jrnl. Amer. Oil Chemists' Soc. 70 727 (title) The preparation of ricinoleamide from castor oil.
This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).
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adj.1847