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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.8b02662
|2 doi
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|a pubmed24n0963.xml
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Huang, Mingquan
|e verfasserin
|4 aut
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| 245 |
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|a Interactions between p-Cresol and Ala-Lys-Arg-Ala (AKRA) from Sesame-Flavor-Type Baijiu
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 19.12.2018
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|a Date Revised 19.12.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The objective of this study was to investigate the influence of Ala-Lys-Arg-Ala (AKRA), a tetrapeptide newly identified from Chinese Sesame flavor-type Baijiu in our previous work, on its binding ability with aroma compounds. A method using headspace solid-phase microextraction combined with gas chromatography-mass spectrometry (HS-SPME-GC/MS) was employed to determine the corresponding binding ability between different concentrations of AKRA (10 - 1000 μg/L) and aromas in Baijiu. In comparison, the aroma molecules in Baijiu before and after adding AKRA were almost the same; only their volatility was altered, with mostly the esters, alcohols, and phenolic compounds being decreased. Additionally, AKRA slightly changed the whole aroma profile of Baijiu, especially with respect to p-cresol (an off-odor in sesame-flavor-type Baijiu), which was verified by systematic sensory experiments including gas chromatography-olfactometry (GC-O) and odor activity values (OAVs) analysis. The nonvolatile tetrapeptide favored the hydrogen bond interactions with p-cresol, forming the AKRA- p-cresol complex, thus reducing the headspace concentration of phenolic off-flavors as evidenced by HS-SPME-GC/MS, ultraviolet (UV) absorption spectroscopy, and nuclear magnetic resonance spectrum (1H NMR) analysis. Meanwhile, the hydrogen bond interaction was further confirmed with the intermolecular cross-peaks between the carboxyl hydrogen of AKRA and the phenolic hydroxyl of p-cresol by nuclear Overhauser effect spectroscopy (1H-1H NOESY)
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Huo, Jiaying
|e verfasserin
|4 aut
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|a Wu, Jihong
|e verfasserin
|4 aut
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| 700 |
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|a Zhao, Mouming
|e verfasserin
|4 aut
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|a Zheng, Fuping
|e verfasserin
|4 aut
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| 700 |
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|a Sun, Jinyuan
|e verfasserin
|4 aut
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| 700 |
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|a Sun, Xiaotao
|e verfasserin
|4 aut
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| 700 |
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|a Li, Hehe
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 34(2018), 42 vom: 23. Okt., Seite 12549-12559
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:34
|g year:2018
|g number:42
|g day:23
|g month:10
|g pages:12549-12559
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|u http://dx.doi.org/10.1021/acs.langmuir.8b02662
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