Qualitative determination of ?-acids and their transformation products in beer and hop using HR/AM-LC-MS/MS
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193697%3A_____%2F14%3A%230000969" target="_blank" >RIV/60193697:_____/14:#0000969 - isvavai.cz</a>
Result on the web
<a href="http://pubs.acs.org/doi/abs/10.1021/jf501852r" target="_blank" >http://pubs.acs.org/doi/abs/10.1021/jf501852r</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jf501852r" target="_blank" >10.1021/jf501852r</a>
Alternative languages
Result language
angličtina
Original language name
Qualitative determination of ?-acids and their transformation products in beer and hop using HR/AM-LC-MS/MS
Original language description
Hops represent an important source of ?-acids with antimicrobial and sensory properties. Transformation products of ?-acids formed during their oxidation, mainly hulupones, have been shown to have an interesting kind of bitterness. Their structures wererecently elucidated using LC-TOFMS and 1D/2D NMR in solution after thermal treatment of the hop ?-acids. This study demonstrates the advantages of MS detection with high resolution and accurate mass measurements. The structure of transformation productsin an experimental solution of oxidized ?-acids was elucidated using a newly developed method by hybrid quadrupole-Orbitrap MS. In addition to already known structures, two new ones were identified and named epoxycohulupone and epoxyhulupone. The methodwas verified on real samples; the profiles of these products in Sládek hops harvested in 2008 and 2012 and in corresponding beers were compared. For this purpose, a new QuEChERS assay was used for the preparation of beer samples.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CB - Analytical chemistry, separation
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/QI91B227" target="_blank" >QI91B227: Significance of hop beta acids for Czech beers</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Agricultural and Food Chemistry
ISSN
0021-8561
e-ISSN
—
Volume of the periodical
62
Issue of the periodical within the volume
31
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
7690-7697
UT code for WoS article
—
EID of the result in the Scopus database
—