UV Lamp as a Facile Ozone Source for Structural Analysis of Unsaturated Lipids Via Electrospray Ionization-Mass Spectrometry
作者:Craig A. Stinson、Wenpeng Zhang、Yu Xia
DOI:10.1007/s13361-017-1861-2
日期:2018.3.1
Ozonolysis of alkene functional groups is a type of highly specific and effective chemical reaction, which has found increasing applications in structural analysis of unsaturated lipids via coupling with mass spectrometry (MS). In this work, we utilized a low-pressure mercury lamp (6 W) to initiate ozonolysis inside electrospray ionization (ESI) sources. By placing the lamp near a nanoESI emitter that
OXIDATIVE CLEAVAGE OF UNSATURATED CARBOXYLIC ACIDS
申请人:Blair Richard G.
公开号:US20120264956A1
公开(公告)日:2012-10-18
Provided are processes for the oxidative cleavage of a double bond in an unsaturated carboxylic acid. The process includes contacting the unsaturated carboxylic acid with a mild oxidizing agent and agitating the unsaturated carboxylic acid and the mild oxidizing agent for a time sufficient to cleave a double bond of the unsaturated carboxylic acid and produce a product comprising an aldehyde. The process is typically carried out in a mill, such as a ball, hammer, attrition, or jet mill.
Compositions and methods for enhancing disease resistance, and modulating levels of flavor molecules in plants are provided. The compositions comprise nucleotide sequences encoding maize HPL genes. The methods comprise expressing hydroperoxide lyase (HPL) genes in plants, plant cells, and plant tissues. Expression cassettes comprising the HPL sequences of the invention are provided, as well as transformed plant cells, plant tissues, and plants.
Guava (Psidium guajava) 13-hydroperoxide lyase and uses thereof
申请人:Firmenich SA
公开号:US20020142407A1
公开(公告)日:2002-10-03
The present invention relates to fatty acid 13-hydroperoxide lyase protein from guava (
Psidium guajava
) and the gene encoding the protein. Expression systems for recombinant guava 13-hydroperoxide lyase and methods of using recombinant guava 13-hydroperoxide lyase for the production of green notes are provided.