Gas Chromatography/Electron-Capture Negative Ion Mass Spectrometry for the Quantitative Determination of 2- and 3-Hydroxy Fatty Acids in Bovine Milk Fat
作者:Ramona Jenske、Walter Vetter
DOI:10.1021/jf800647w
日期:2008.7.1
2-OH-18:1(9 c) methyl ester as well as the ethyl ester of 3-PFBO-O-12:0 (ISTD-2) was synthesized. ISTD-1 served as a recovery standard whereas ISTD-2 was used for GC/MS measurements. The whole-sample cleanup consisted of accelerated solvent extraction of dry bovine milk, addition of ISTD 1, saponification, conversion of fatty acids into methyl esters by use of boron trifluoride, separation of the methyl
Provided is a method for producing an alcohol compound, which enables the alcohol compound to be obtained at a high yield from an amide compound or amine compound. The method for producing an alcohol compound, which is characterized by comprising allowing an alcohol in a supercritical state to act on the amide compound or amine compound in the presence of a carboxylic acid derivative to obtain the alcohol compound.
$g(a)-HYDROXY FATTY ACID DERIVATIVES AND COMPOSITION FOR EXTERNAL USE CONTAINING THE SAME
申请人:Kanebo Limited
公开号:EP1084693A1
公开(公告)日:2001-03-21
A novel oily base, which has excellent stability and a low melting point, dose not irritate the skin and is superior feel in use. And an external composition contains the oily base. The present invention is directed to an alpha-hydroxy fatty acid derivatives represented by the
general formula (1):
wherein R1 represents a straight-chain or branched alkyl group having 10 to 24 carbon atoms, R2 represents a straight-chain or branched alkyl group having 1 to 31 carbon atoms, and R3 represents a straight-chain or branched alkyl group having 11 to 31 carbon atoms, and an external composition contains at least one of the derivatives.
Provided is a method for producing N-acylamino triol efficiently by selectively N-acylating amino triol according to industrially advantageous techniques.
The method for producing N-acylamino triol represented by the following formula (1), comprising reacting amino triol with a fatty acid ester in the presence of a basic catalyst in ethanol and/or methanol:
There is provided a microbial cell expressing a mutant AlkB enzyme, the mutant AlkB enzyme comprising at least one point mutation in the wild type sequence of AlkB, wherein the point mutation is at amino acid position V129 and/or T136 of the wild type AlkB enzyme. There is also provided a method for producing omega-hydroxy carboxylic acid and/or ester thereof using this cell.