| Autor: |
Zixuan Wang, Liangqiang Chen, Fan Yang, Xiaolin Wang, Yang Hu, Ting Wang, Xin Lu, Jianjun Lu, Chunxiu Hu, Huabin Tu, Guowang Xu |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Food Chemistry: X, Vol 21, Iss , Pp 101097- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2590-1575 |
| DOI: |
10.1016/j.fochx.2023.101097 |
| Popis: |
Dipeptides in sauce-flavor Baijiu Daqu are protein degradation products during the fermentation of Daqu, which are believed to play a crucial role in the flavor and quality of Baijiu. Herein, we integrated dansyl chloride derivatization with ultrahigh-performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLC-HRMS) for comprehensively profiling dipeptides in Daqu. The derivatization efficiency was higher than 99.1 % for all 17 dipeptide standards under the optimized derivatization conditions. In total, 118 dipeptides were detected in Daqu. The method was validated and the analytical characteristics including the linearity (spanned across 2–4 orders of magnitude), precision (1.2–19.9 %), limit of detection (varied from 1.1 to 53.4 pmol/mL) and the stability (3.6–15.8 %) are satisfactory. The usefulness of the method was examined by studying the distribution characteristics of dipeptides in Daqu under different production conditions. The present method provides an effective and robust strategy for comprehensively analyzing dipeptide compounds in complex biological samples. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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