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  Direct characterization of bitter acids in a crude hop extract by liquid chromatography-atmospheric pressure chemical ionization mass spectrometry

Zhang, X., Liang, X., Xiao, H., & Xu, Q. (2004). Direct characterization of bitter acids in a crude hop extract by liquid chromatography-atmospheric pressure chemical ionization mass spectrometry. Journal of the American Society for Mass Spectrometry, 15(2), 180-187. doi:10.1016/j.jasms.2003.09.014.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-D9C3-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-4F73-2
Genre: Journal Article

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Zhang, X1, Author              
Liang , X, Author
Xiao, H, Author
Xu, Q, Author
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1External Organizations, ou_persistent22              

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 Abstract: The applicability of on-line coupling of reversed-phase high-performance liquid chromatography to atmospheric pressure ionization tandem mass spectrometry for the separation and characterization of hop acids mixture from the crude extract of Humulus lupulus was investigated. The solvent system consisting of acetonitrile-aqueous formic acid was used to give proper separation of the six main hop bitter acids within 30 min. Further structural information about the components was acquired by collision-induced dissociation (CID). On the basis of analyses of the fragmentation patterns of the major amp;amp;945;- and amp;amp;946;-bitter acids respectively, identification of the minor ones was performed using selected reaction monitoring (SRM) with a group of qualitatively relevant selected precursor-product ion transitions for each bitter acid in a single high performance liquid chromatography (HPLC) run. Using this technique, six minor hop acids, including “adprelupulone” observed for the first time in natural resources, were detected along with the six major acids. This hyphenated techniques provides potency for rapid qualitative determination of analogs and homologs in

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 Dates: 2004-02
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: BibTex Citekey: 4447
DOI: 10.1016/j.jasms.2003.09.014
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Title: Journal of the American Society for Mass Spectrometry
Source Genre: Journal
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Publ. Info: New York, NY : Springer
Pages: - Volume / Issue: 15 (2) Sequence Number: - Start / End Page: 180 - 187 Identifier: ISSN: 1044-0305
CoNE: https://pure.mpg.de/cone/journals/resource/954925590403