Oxidation reaction of unsaturated long chain fatty esters : a sonochemical approach

1995 ◽  
Author(s):  
Ching-kin Lam
Keyword(s):  
Oxidation Reaction ◽  
Fatty Esters ◽  
Long Chain

13C-NMR spectra of positional isomers of long-chain conjugated diacetylenic fatty esters

1991 ◽  
Vol 60 (2) ◽  
pp. 179-188 ◽  
Author(s):  
M.S.F. Lie Ken Jie ◽  
Y.K. Cheung ◽  
S.H. Chau ◽  
B.F.Y. Yan
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Positional Isomers ◽  
13C Nmr Spectra ◽  
Fatty Esters ◽  
Long Chain

THE FERMENTATION OF LONG-CHAIN COMPOUNDS BY TORULOPSIS MAGNOLIAE: I. STRUCTURES OF THE HYDROXY FATTY ACIDS OBTAINED BY THE FERMENTATION OF FATTY ACIDS AND HYDROCARBONS

1962 ◽  
Vol 40 (7) ◽  
pp. 1326-1338 ◽  
Author(s):  
A. P. Tulloch ◽  
J. F. T. Spencer ◽  
P. A. J. Gorin
Keyword(s):  
Fatty Acids ◽  
Carbon Atom ◽  
Chain Length ◽  
Hydroxy Fatty Acid ◽  
Hydroxyl Group ◽  
Fatty Esters ◽  
Degree Of Unsaturation ◽  
Chain Compounds ◽  
Chain Lengths ◽  
Long Chain

The yield of extracellular glycolipid produced by Torulopsis magnoliae is increased three-to five-fold by the addition of suitable compounds to the growing culture. The supplement, which can be a long-chain acid, ester, hydrocarbon, or glyceride, is hydroxylated and converted to hydroxy fatty acid sophorosides. Fatty esters of all chain lengths from C16 to C22, including several unsaturated esters, and even-numbered hydrocarbons from C16 to C24 are readily fermented. Shorter-chain compounds are used poorly or not at all. With compounds of 16 to 18 carbon atoms, hydroxylation occurs at the terminal or penultimate carbon atom, depending on degree of unsaturation and chain length. Substrates of more than 18 carbon atoms are mainly reduced in chain length by one or more two-carbon units and hydroxylated, giving C17 or C18 acids with the hydroxyl group on the penultimate carbon atom. The various enzymic reactions which occur during the fermentation are discussed.

Formation of cyclic products from the diepoxide of long-chain fatty esters by cytosolic epoxide hydrolase

1992 ◽  
Vol 294 (2) ◽  
pp. 586-593 ◽  
Author(s):  
Premjit P. Halarnkar ◽  
Jaffar Nourooz-Zadeh ◽  
Eichii Kuwano ◽  
A. Daniel Jones ◽  
Bruce D. Hammock
Keyword(s):  
Epoxide Hydrolase ◽  
Fatty Esters ◽  
Long Chain ◽  
Cytosolic Epoxide Hydrolase
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