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Lin H, Zhao J, Xie Y, Tang J, Wang Q, Zhao J, Xu M, Liu P. Identification and molecular mechanisms of novel antioxidant peptides from fermented broad bean paste: A combined in silico and in vitro study. Food Chem 2024; 450:139297. [PMID: 38631199 DOI: 10.1016/j.foodchem.2024.139297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 02/07/2024] [Accepted: 04/07/2024] [Indexed: 04/19/2024]
Abstract
This study aimed to investigate the antioxidative and cytoprotective activity of antioxidant peptides from fermented broad bean paste (FBBP) and explore their potential molecular mechanisms using a combined in silico and in vitro approach. Seven novel antioxidant peptides (VSRRFIYYL, SPAIPLP, PVPPPGG, KKDGYWWAKFK, LAWY, LGFMQF, and LPGCP) identified by integrated approaches of peptidomics and in silico bioinformatic analysis were synthesized, exhibiting strong antioxidant potential against in vitro radicals. Molecular docking results suggested that these peptides could form stable hydrogen bonds and solvent-accessible surface with key amino acid residues of Keap1, thus potentially regulating the Keap1-Nrf2 pathway by occupying the Nrf2-binding site on Keap1. Additionally, they exhibited strong cellular antioxidant activity and could protect HepG2 cells from AAPH-induced oxidative injury by reducing reactive oxygen species and MDA accumulation. This study firstly unraveled the molecular mechanisms of antioxidant peptides from FBBP, and provided a new theoretical basis for the high-value utilization of FBBP.
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Affiliation(s)
- Hongbin Lin
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China.
| | - Jianhua Zhao
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Yuqing Xie
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Jie Tang
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Food Microbiology Key Laboratory of Sichuan Province, Chengdu 610039, China
| | - Qin Wang
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Jie Zhao
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
| | - Min Xu
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
| | - Ping Liu
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
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2
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Dong M, Zhang Z, Wang HP, Huang X, Wang X, Qin L. Discrimination and evaluation of commercial salmons by low-molecule-weight compounds: Oligopeptides and phosphatides. Food Chem 2024; 455:139777. [PMID: 38850970 DOI: 10.1016/j.foodchem.2024.139777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 05/03/2024] [Accepted: 05/19/2024] [Indexed: 06/10/2024]
Abstract
In this study, the overall sensory characteristics and low-molecule-weight compounds were analyzed to achieve the discrimination of different commercial salmons and investigate the salmon's sensory and nutritional quality. The results showed that above the overall sensory properties, O. mykiss, S. salar, and O. kisutch were the most satisfied salmons by the panel with the desirable texture and flavor, which displayed a large potential for growth in the consumption market. The alcohols and sulfur compounds were key volatile compounds contributing to typical aroma of O. masou and O. gorbuscha, response higher than others by 147% to 167%. The oligopeptides and phospholipids in salmon could be used as biomarkers for discrimination of these salmon. Oligopeptides were also closely related to the taste quality of salmon. Seventeen oligopeptides showed potential umami activity based on molecular docking results, especially Arg-Val and Ser-Asn, which were the key tastants contributing to the umami of salmon.
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Affiliation(s)
- Meng Dong
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Zichun Zhang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Hao-Peng Wang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Xuhui Huang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Xusong Wang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Lei Qin
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China.
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Liu J, Xu Y, Yan J, Bai L, Hua J, Luo S. Polymethoxylated flavones from the leaves of Vitex negundo have fungal-promoting and antibacterial activities during the production of broad bean koji. Front Microbiol 2024; 15:1401436. [PMID: 38751721 PMCID: PMC11094617 DOI: 10.3389/fmicb.2024.1401436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 04/15/2024] [Indexed: 05/18/2024] Open
Abstract
Broad bean paste is a popular condiment in Asian countries. Leaves of Vitex negundo Linn. were used extensively in China during the koji-making of broad bean paste. Spreading V. negundo leaves on raw broad beans during fermentation was able to facilitate the rapid growth of fungi to form mature koji. We isolated two strains of fungi from mature koji, and four strains of bacteria from the rotten broad beans resulting from a failed attempt. According to microbial activity assays, two polymethoxylated flavones, 5-hydroxy-3,6,7,8,3',4'-hexamethoxy flavone (HJ-1) and 5,4'-dihydroxy-3,6,7,8,3'-pentamethoxy flavone (HJ-2) were isolated from V. negundo leaves, and the fungal growth promotion and inhibition of bacterial growth of these two compounds were found to improve the production of broad bean koji. This study reveals the compounds present in V. negundo leaves with bioactivity against important microbes in koji manufacture, and provides a theoretical basis for the application of V. negundo in broad bean paste production.
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Affiliation(s)
| | | | | | | | - Juan Hua
- Research Center of Protection and Utilization of Plant Resources, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Shihong Luo
- Research Center of Protection and Utilization of Plant Resources, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China
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Zhao J, Xie Y, Xiang Y, Jiang C, Tang Z, Zhao J, Xu M, Liu P, Lin H, Tang J. Taste Mechanism of Umami Molecules from Fermented Broad Bean Paste Based on In Silico Analysis and Peptidomics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38557018 DOI: 10.1021/acs.jafc.3c09545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
In this study, in silico analysis and peptidomics were performed to examine the generation mechanism of the umami taste of fermented broad bean paste (FBBP). Based on the information from peptidomics, a total of 470 free peptides were identified from FBBP, most of which were increased after fermentation. Additionally, the increase of the content of umami peptides, organic acids, and amino acids during fermentation contributed to the perception of umami taste in FBBP. Molecule docking results inferred that these umami molecules were easy to connect with Ser, Glu, His, and Gln in the T1R3 subunit through hydrogen bonds and electrostatic interaction force. The binding sites His145, Gln389, and Glu301 particularly contributed to the formation of the ligand-receptor complexes. The aromatic interaction, hydrogen bond, hydrophilicity, and solvent-accessible surface (SAS) played key roles in the receptor-peptide interaction. Sensory evaluation and electronic tongue results showed that EDEDE, DLSESV, SNGDDE, DETL, CDLSD, and TDEE screened from FBBP had umami characteristics and umami-enhancing effects (umami threshold values ranging from 0.131 to 0.394 mmol/L). This work provides new insight into the rapid and efficient screening of novel umami peptides and a deeper understanding of the taste mechanisms of umami molecules from FBBP.
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Affiliation(s)
- Jianhua Zhao
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Yuqing Xie
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Yue Xiang
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Chunyan Jiang
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Zhirui Tang
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Jie Zhao
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Min Xu
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Ping Liu
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu 610039, China
| | - Hongbin Lin
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu 610039, China
| | - Jie Tang
- Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
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Li N, Lin S, Sun W, Xu M, Liu P, Che Z. Application effects of NaCl substitute on the fermentation profile of Pixian douban (broad bean paste). J Food Sci 2024; 89:2137-2157. [PMID: 38465700 DOI: 10.1111/1750-3841.17018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 02/08/2024] [Accepted: 02/16/2024] [Indexed: 03/12/2024]
Abstract
The effects of a reduced-salt substitute (composed of NaCl, sodium gluconate, KCl, L-histidine, and L-lysine) applied in the fermentation of traditional Pixian douban (PXDB) were explored in this study according to sensory quality, physicochemical characteristics, color, colony count, and the contents of free amino acids (FAAs), organic acids, and volatile flavor compounds. The results showed that the PXDB with a 15% salt substitution had the most attractive reddish-brown color, a mellow fragrance, and the lowest total colony count of the three pastes. The fermentation quality of the 15% salt substitute PXDB was superior to that of the control groups, its sensory quality was more readily accepted, and the contents of its amino acid nitrogen, FAAs and organic acids had increased by 0.1050, 0.3290, and 3.9068 mg/g, respectively. Moreover, the concentrations of the main aroma compounds in the PXDB containing the salt substitute were higher than those of the control. These included phenylethanol, 3-methylthiopropanol, isoamyl alcohol, furfural, benzaldehyde, phenylacetaldehyde, nonanal, isoamyl aldehyde, 4-ethylphenol, and, particularly, 2,6-dimethylpyrazine, which had increased as much as 100 times. Correlation analysis showed that Glu, Phe, Tyr, Gly, Leu, Val, Asp, Ile, citric acids, and succinic acids were all positively correlated with the main aroma and contributed to the generation of PXDB's characteristic flavor, and main aroma substances in turn positively influence PXDB flavor sensory attributes. Overall, these results showed the application of the 15% salt substitute during PXDB fermentation improved the quality of the paste and, thus, would benefit the development of reduced-salt PXDB.
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Affiliation(s)
- Na Li
- School of Food and Bioengineering, Xihua University, Chengdu, Sichuan, People's Republic of China
| | - Shengchao Lin
- School of Food and Bioengineering, Xihua University, Chengdu, Sichuan, People's Republic of China
| | - Wenjia Sun
- School of Food and Bioengineering, Xihua University, Chengdu, Sichuan, People's Republic of China
| | - Min Xu
- School of Food and Bioengineering, Xihua University, Chengdu, Sichuan, People's Republic of China
| | | | - Zhenming Che
- School of Food and Bioengineering, Xihua University, Chengdu, Sichuan, People's Republic of China
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Mei S, Yao S, Mo J, Wang Y, Tang J, Li W, Wu T. Integration of cloud-based molecular networking and docking for enhanced umami peptide screening from Pixian douban. Food Chem X 2024; 21:101098. [PMID: 38229673 PMCID: PMC10790023 DOI: 10.1016/j.fochx.2023.101098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/17/2023] [Accepted: 12/21/2023] [Indexed: 01/18/2024] Open
Abstract
This study presents an innovative cloud-based approach, using Pixian Douban, a well-known Chinese fermented seasoning, as a case study, to improve the identification of umami peptides and explore their interactions with the T1R1/T1R3 receptor. A feature-based molecular networking method was utilized to rapidly identify a total of eighteen peptides, including seven previously unrecorded ones. Notably, the umami threshold of QIVK in an aqueous solution was determined to be 0.3215 mmol/L, surpassing the majority of peptides reported in the past three years. Molecular docking analysis further revealed the strong binding of QIVK to T1R3 receptor residues through hydrogen bonds, as well as interactions via salt bridges and electrostatic attractions. As a result, this research significantly contributes to the efficient screening of umami peptides and the elucidation of the molecular basis of umami sensory perception in complex food systems.
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Affiliation(s)
- Sen Mei
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, No.999 Guangchang Road, Chengdu 610039, China
| | - Shanshan Yao
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, No.999 Guangchang Road, Chengdu 610039, China
| | - Jingjing Mo
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, No.999 Guangchang Road, Chengdu 610039, China
| | - Yi Wang
- Xi'an Jiaotong University, No. 28 Xinning West Road, Xi'an, Shaanxi, 710049, China
| | - Jie Tang
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, No.999 Guangchang Road, Chengdu 610039, China
| | - Weili Li
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, No.999 Guangchang Road, Chengdu 610039, China
| | - Tao Wu
- Food Microbiology Key Laboratory of Sichuan Province, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University, No.999 Guangchang Road, Chengdu 610039, China
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Gu Y, Zhang J, Niu Y, Sun B, Liu Z, Mao X, Zhang Y. Virtual screening and characteristics of novel umami peptides from porcine type I collagen. Food Chem 2024; 434:137386. [PMID: 37716151 DOI: 10.1016/j.foodchem.2023.137386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/20/2023] [Accepted: 08/31/2023] [Indexed: 09/18/2023]
Abstract
This study aimed to rapidly and precisely discover novel umami peptides from porcine type I collagen using virtual screening, sensory evaluation and molecular docking simulation. Porcine type I collagen was hydrolyzed in silico and six umami peptide candidates (CN, SM, CRD, GESMTDGF, MS, DGC) were shortlisted via umami taste, bioactivity, toxicity, allergenicity, solubility and stability predictions. The sensory evaluation confirmed that these peptides exhibited umami taste, with CRD, GESMTDGF and DGC displaying higher umami intensity and significant umami-enhancing effects in 0.35% sodium glutamate solution. Molecular docking predicted that Ser 276/384/385 of T1R1 and Asn68, Val277, Thr305, Ser306, Leu385 of T1R3 may also play critical roles in binding umami peptides. The umami taste of peptides may be perceived mainly through the formation of hydrogen bonds with the hydrophilic amino acids of T1R1/T1R3. This work provided a robust procedure and guidance to develop novel umami peptides from food byproducts.
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Affiliation(s)
- Yuxiang Gu
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, China; Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Jingcheng Zhang
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, China; Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Yajie Niu
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, China
| | - Baoguo Sun
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, China; Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Zunying Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Yuyu Zhang
- Key Laboratory of Geriatric Nutrition and Health (Beijing Technology and Business University), Ministry of Education, Beijing 100048, China; Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China.
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Cui Z, Meng H, Zhou T, Yu Y, Gu J, Zhang Z, Zhu Y, Zhang Y, Liu Y, Wang W. Noteworthy Consensus Effects of D/E Residues in Umami Peptides Used for Designing the Novel Umami Peptides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:2789-2800. [PMID: 38278623 DOI: 10.1021/acs.jafc.3c07026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
Aspartic acid (D) and glutamic acid (E) play vital roles in the umami peptides. To understand their exact mechanism of action, umami peptides were collected and cut into 1/2/3/4 fragments. Connecting D/E to the N/C-termini of the fragments formed D/E consensus effect groups (DEEGs), and all fragments containing DEEG were summarized according to the ratio and ranking obtained in the above four situations. The interaction patterns between peptides in DEEG and T1R1/T1R3-VFD were compared by statistical analysis and molecular docking, and the most conservative contacts were found to be HdB_277_ARG and HdB_148_SER. The molecular docking score of the effector peptides significantly dropped compared to that of their original peptides (-1.076 ± 0.658 kcal/mol, p value < 0.05). Six types of consensus fingerprints were set according to the Top7 contacts. The exponential of relative umami was linearly correlated with ΔGbind (R2 = 0.961). Under the D/E consensus effect, the electrostatic effect of the umami peptide was improved, and the energy gap between the highest occupied molecular orbital-the least unoccupied molecular orbital (HOMO-LUMO) was decreased. The shortest path map showed that the peptides had similar T1R1-T1R3 recognition pathways. This study helps to reveal umami perception rules and provides support for the efficient screening of umami peptides based on the material richness in D/E sequences.
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Affiliation(s)
- Zhiyong Cui
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Hengli Meng
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Tianxing Zhou
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Department of Bioinformatics, Faculty of Science, The University of Melbourne, Victoria 3010, Australia
| | - Yanyang Yu
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jiaming Gu
- College of Humanities and Development Studies, China Agricultural University, Beijing 100083, P. R. China
| | - Zhiwei Zhang
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yiwen Zhu
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yin Zhang
- Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu 610106, P. R. China
| | - Yuan Liu
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wenli Wang
- Department of Food Science & Technology, School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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Xiang Y, Zhou B, Jiang C, Tang Z, Liu P, Ding W, Lin H, Tang J. Revealing the formation mechanisms of key flavors in fermented broad bean paste. Food Res Int 2024; 177:113880. [PMID: 38225117 DOI: 10.1016/j.foodres.2023.113880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 01/17/2024]
Abstract
Pixian Douban (PXDB) is a popular Chinese condiment for its distinctive flavor. Broad bean fermentation (Meju) is the most important process in the formation of flavor substances. Key flavors were analyzed qualitatively and quantitatively, and metagenomic technology was applied to study the microbial diversity during broad bean fermentation. In addition, the main metabolic pathways of key flavors were explored. Results indicated that Staphylococcus_gallinarum was the main microorganism in the microbial community, accounting for 39.13%, followed by Lactobacillus_agilis, accounting for 13.76%. Aspergillus_flavus was the fungus with the highest species abundance, accounting for 3.02%. The KEGG Pathway enrichment analysis showed that carbohydrate metabolism and amino acid metabolism were the main metabolic pathways. Glycoside hydrolase and glycosyltransferase genes were the most abundant, accounting for more than 70% of the total number of active enzyme genes. A total of 113 enzymes related to key flavors and 39 microorganisms corresponding to enzymes were annotated. And Staphylococcus_gallinarum, Lactobacillus_agilis, Weissella_confusa, Pediococcus_acidilactici, Staphylococcus_kloosii, Aspergillus_oryzae, and Aspergillus_flavus played a key role in the metabolic pathway. This study reveals the formation mechanism of key flavors in fermented broad bean, it is important for guiding the industrial production of PXDB and improving product quality.
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Affiliation(s)
- Yue Xiang
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Food Microbiology Key Laboratory of Sichuan Province, Chengdu 610039, China.
| | - Binbin Zhou
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China
| | - Chunyan Jiang
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
| | - Zhirui Tang
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
| | - Ping Liu
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
| | - Wenwu Ding
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China
| | - Hongbin Lin
- School of Food and Bio-engineering, Xihua University, Chengdu 610039, China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chengdu 610039, China.
| | - Jie Tang
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu 610039, China.
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Cao K, An F, Wu J, Ji S, Rong Y, Hou Y, Ma X, Yang W, Hu L, Wu R. Identification, Characterization, and Receptor Binding Mechanism of New Umami Peptides from Traditional Fermented Soybean Paste (Dajiang). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18953-18962. [PMID: 37979135 DOI: 10.1021/acs.jafc.3c04943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Dajiang, a traditional Chinese condiment, is made from fermented soybeans. It is highly popular among consumers as a result of its delicious umami flavor, which mainly originates from umami peptides. To examine the mechanism of umami taste in Dajiang, we selected Dajiang samples with strong umami taste and subjected them to purification and identification analysis using ethanol precipitation, gel chromatography, reversed-phase high-performance liquid chromatography, and ultraperformance liquid chromatography-tandem mass spectrometry. Subsequently, on the basis of toxicity and umami prediction analysis, we screened, synthesized, and characterized three novel bean umami peptides in Dajiang: TLGGPTTL, 758.4174 Da; GALEQILQ, 870.4811 Da; and HSISDLQ, 911.4713 Da. Their sensory threshold values were 0.25, 0.40, and 0.17 mmol/L, respectively. Furthermore, molecular docking results showed that hydrogen-bonding and hydrophobic interactions are important interaction forces in the binding of umami peptide to taste receptors. Ser147 and Glu148 of the T1R3 taste receptor are important amino acid residues for binding of the three umami peptides. This study uncovers the mechanism of umami-peptide-driven flavor in fermented soybean products.
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Affiliation(s)
- Kaixin Cao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Engineering Research Center of Food Fermentation Technology, Shenyang, Liaoning 110866, People's Republic of China
| | - Feiyu An
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Engineering Research Center of Food Fermentation Technology, Shenyang, Liaoning 110866, People's Republic of China
| | - Junrui Wu
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Liaoning 110866, People's Republic of China
| | - Shuaiqi Ji
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Liaoning 110866, People's Republic of China
| | - Yaozhong Rong
- Shanghai Totole Food Company, Limited, Shanghai 201812, People's Republic of China
| | - Yuchen Hou
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Liaoning 110866, People's Republic of China
| | - Xuwen Ma
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Engineering Research Center of Food Fermentation Technology, Shenyang, Liaoning 110866, People's Republic of China
| | - Wenxin Yang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Liaoning 110866, People's Republic of China
| | - Longkun Hu
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Engineering Research Center of Food Fermentation Technology, Shenyang, Liaoning 110866, People's Republic of China
| | - Rina Wu
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, People's Republic of China
- Engineering Research Center of Food Fermentation Technology, Shenyang, Liaoning 110866, People's Republic of China
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11
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Wang N, Han G, Zhao Y, Bai F, Wang J, Xu H, Gao R, Jiang X, Xu X, Liu K. Identification and Verification of Novel Umami Peptides Isolated from Hybrid Sturgeon Meat ( Acipenser baerii × Acipenser schrenckii). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37916660 DOI: 10.1021/acs.jafc.3c05395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
To explore the umami mechanism in sturgeon meat, five peptides (ERRY, VRGPR, LKYPLE, VKKVFK, and YVVFKD) were isolated and identified by ultrafiltration, gel filtration chromatography, and UPLC-QTOF-MS/MS. The omission test confirmed that the five umami peptides contributed to the umami taste of sturgeon meat. Also, the peptides had the double effective role of enhancing both umami and saltiness. The threshold of ERRY was only 0.031, which exceeded most umami peptides in the last 3 years. Molecular docking results showed that five peptides could easily bind to Gly167, Ser170, and Try218 residues in T1R3 through hydrogen bonds and electrostatic interactions. Furthermore, molecular dynamics simulations indicated that hydrogen bonds and hydrophobic interactions were the main intermolecular interaction forces. This study could contribute to revealing the umami taste mechanism of sturgeon meat and provide new insights for effective screening of short umami peptides.
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Affiliation(s)
- Ningchen Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Guixin Han
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Yuanhui Zhao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Sanya Oceanographic Institution of Ocean University of China, Sanya 572024, China
| | - Fan Bai
- Quzhou Sturgeon Aquatic Food Science and Technology Development Co., Ltd., Quzhou 324002, China
| | - Jinlin Wang
- Quzhou Sturgeon Aquatic Food Science and Technology Development Co., Ltd., Quzhou 324002, China
| | - He Xu
- Lianyungang Baohong Marine Technology Co., Ltd., Lianyungang 222000, China
| | - Ruichang Gao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaoming Jiang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Xinxing Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Kang Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
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12
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Yu H, Zhao S, Yi J, Du M, Liu J, Liu Y, Cai S. Identification of Novel Umami Peptides in Termitornyces albuminosus (Berk) Heim Soup by In Silico Analyses Combined with Sensory Evaluation: Discovering Potential Mechanism of Umami Taste Formation with Molecular Perspective. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37917560 DOI: 10.1021/acs.jafc.3c04281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
In this study, 24 peptides were identified in Termitornyces albuminosus (Berk) Heim soup, 12 of which were predicted to possess an umami taste based on the BIOPEP-UWM or Umami-MRNN databases. Among these 12 peptides, four peptides (i.e., QNDF, QGGDF, EPVTLT, and EVNYDFGGK) exhibited the lowest affinity energy with the umami receptor type 1 member 1 (T1R1) subunit. Molecular docking and molecular dynamics simulation further confirmed the strong binding of these four umami peptides to the umami receptor T1R1/T1R3, with the EVNYDFGGK forming the most stable complex. After synthesizing the four peptides, their umami taste was validated through sensory and electronic tongue analyses with recognition thresholds ranging from 0.0938 to 0.3750 mmol/L. Notably, the EVNYDFGGK peptide displayed the strongest umami taste (recognition threshold, 0.0938 mmol/L). This study may contribute to the industrial development of T. albuminosus by providing a new understanding of the mechanism of its umami formation.
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Affiliation(s)
- Haixia Yu
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan Province, People's Republic of China
| | - Shuai Zhao
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan Province, People's Republic of China
| | - Junjie Yi
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan Province, People's Republic of China
| | - Ming Du
- Faculty of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, Liaoning Province, People's Republic of China
| | - Jia Liu
- Beijing Key Laboratory of the Innovative Development of Functional Staple and Nutritional Intervention for Chronic Diseases, China National Research Institute of Food and Fermentation Industries Co., LTD, Beijing 100015, People's Republic of China
| | - Yifeng Liu
- Beijing Key Laboratory of the Innovative Development of Functional Staple and Nutritional Intervention for Chronic Diseases, China National Research Institute of Food and Fermentation Industries Co., LTD, Beijing 100015, People's Republic of China
| | - Shengbao Cai
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan Province, People's Republic of China
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13
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Li C, Yang D, Li L, Wang Y, Chen S, Zhao Y, Lin W. Comparison of the taste mechanisms of umami and bitter peptides from fermented mandarin fish ( Chouguiyu) based on molecular docking and electronic tongue technology. Food Funct 2023; 14:9671-9680. [PMID: 37850257 DOI: 10.1039/d3fo02697c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
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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Affiliation(s)
- Chunsheng Li
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Daqiao Yang
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
- College of Life Sciences, Linyi University, Linyi 276000, China
| | - Laihao Li
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
| | - Yueqi Wang
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
| | - Shengjun Chen
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
| | - Yongqiang Zhao
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
| | - Wanling Lin
- School of Life Science and Food Engineering, Hanshan Normal University, Chaozhou 521041, China
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14
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Li M, Zhang X, Zhu Y, Zhang X, Cui Z, Zhang N, Sun Y, Yang Z, Wang W, Wang C, Zhang Y, Liu Y, Qing G. Identifying Umami Peptides Specific to the T1R1/T1R3 Receptor via Phage Display. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12004-12014. [PMID: 37523494 DOI: 10.1021/acs.jafc.3c02471] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Umami peptides are small molecular weight oligopeptides that play a role in umami taste attributes. However, the identification of umami peptides is easily limited by environmental conditions, and the abundant source and high chromatographic separation efficiency remain difficult. Herein, we report a robust strategy based on a phage random linear heptapeptide library that targets the T1R1-Venus flytrap domain (T1R1-VFT). Two candidate peptides (MTLERPW and MNLHLSF) were readily identified with high affinity for T1R1-VFT binding (KD of MW-7 and MF-7 were 790 and 630 nM, respectively). The two peptides exhibited umami taste and significantly enhanced the umami intensity when added to the monosodium glutamate solution. Overall, this strategy shows that umami peptides could be developed via phage display technology for the first time. The phage display platform has a promising application to discover other taste peptides with affinity for taste receptors of interest and has more room for improvement in the future.
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Affiliation(s)
- Mingyang Li
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Xiaoyu Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Yiwen Zhu
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xiancheng Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Zhiyong Cui
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Ninglong Zhang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Yue Sun
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Zhiying Yang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Wenli Wang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Cunli Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Yin Zhang
- Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu 610106, PR China
| | - Yuan Liu
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Guangyan Qing
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
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