Comparison of the taste mechanisms of umami and bitter peptides from fermented mandarin fish (Chouguiyu) based on molecular docking and electronic tongue technology
文献类型： 外文期刊
作者： Li, Chunsheng 1 ; Yang, Daqiao 1 ; Li, Laihao 1 ; Wang, Yueqi 1 ; Chen, Shengjun 1 ; Zhao, Yongqiang 1 ; Lin, Wanling 4 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Natl R&D Ctr Aquat Prod Proc, Key Lab Aquat Prod Proc,Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China
2.Jiangsu Ocean Univ, Coinnovat Ctr Jiangsu Marine Bioind Technol, Lianyungang 222005, Peoples R China
3.Linyi Univ, Coll Life Sci, Linyi 276000, Peoples R China
4.Hanshan Normal Univ, Sch Life Sci & Food Engn, Chaozhou 521041, Peoples R China
期刊名称：FOOD & FUNCTION （ 影响因子：6.1； 五年影响因子：6.5 ）
ISSN： 2042-6496
年卷期： 2023 年 14 卷 21 期
页码：
收录情况： SCI
摘要： Unclear taste mechanisms of peptides limit rapid screening of taste peptides with high intensity. In this study, the taste mechanisms of umami and bitter peptides from Chouguiyu were compared. After molecular docking of core umami (NWDDMEK, WFKDEEF, EEEKPKF, DFDDIQK, and DGEKVDF) and bitter (VQDVLKL, VELLKLE, LVVDGVK, VVDLTVR, and VVDGVKL) peptides with T1R1/T1R3 and TASR14, respectively, salt bridges and conventional hydrogen bonds were the main interactions in all taste peptides, in which acidic amino acid residues contributed to the interaction with their receptors. The taste intensity of peptides after solid-phase synthesis was further verified using electronic tongue technology. Spearman correlation analysis showed that docking energy was an important factor for the intensity of taste peptides, while interaction energy and the distance between the binding unit (BU) and the stimulating unit (SU) were also responsible for the bitter intensity. This study provides a theoretical basis to screen novel taste peptides with high taste intensity in fermented foods.
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