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Liu C, Tang PP, Liu XB, Liu JX, Pan XH, Aadil RM, Cheng JH, Liu ZW. Cold plasma for enhancing covalent conjugation of ovalbumin-gallic acid and its functional properties. Food Chem 2024; 454:139753. [PMID: 38795625 DOI: 10.1016/j.foodchem.2024.139753] [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: 04/01/2024] [Revised: 05/10/2024] [Accepted: 05/18/2024] [Indexed: 05/28/2024]
Abstract
The utilization of cold plasma (CP) treatment to promote covalent conjugation of ovalbumin (OVA) and gallic acid (GA), as well as its functionality, were investigated. Results demonstrated that CP significantly enhanced the covalent grafting of OVA and GA. The maximum conjugation of GA, 24.33 ± 2.24 mg/g, was achieved following 45 s of CP treatment. Covalent conjugation between GA and OVA were confirmed through analyses of total sulfhydryl (-SH) group, Fourier transform infrared (FTIR) spectroscopy, and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Unfolding of the OVA molecule occurred upon conjugation with GA, as evidenced by multiple spectroscopy analyses. Additionally, conjugation with GA resulted in significant improvements in the antioxidant activity and emulsifying properties of OVA. This study demonstrated that CP is a robust and sustainable technique for promoting the covalent conjugate of polyphenols and proteins, offering a novel approach to enhance the functional properties of proteins.
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Affiliation(s)
- Chang Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Pan-Pan Tang
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Xiu-Bin Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Jun-Xiang Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Xiao-Hong Pan
- Hunan Institute of Drug Inspection and Testing, Changsha 410001, China
| | - Rana Muhammad Aadil
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad 38000, Pakistan..
| | - Jun-Hu Cheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China.
| | - Zhi-Wei Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China.
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2
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Xue Z, Zhang M, Wang M, Wang S, Wang S, Wang P, Li J, Liu H. Development and characterization of adhesives constructed by soy protein isolate and tea polyphenols for enhanced tensile strength in plant-protein meat applications. Food Chem 2024; 453:139643. [PMID: 38761734 DOI: 10.1016/j.foodchem.2024.139643] [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: 12/01/2023] [Revised: 04/18/2024] [Accepted: 05/09/2024] [Indexed: 05/20/2024]
Abstract
The study aimed to evaluate a food adhesive developed using tea polyphenols (TPs) with soybean protein isolate (SPI) to create a cohesive bond between soy protein gel and simulated fat. Upon the addition of 5.0 % TPs, significant increases in viscosity, thermal stability, and crystallinity were noted in adhesives, suggesting the formation of a cohesive network. Furthermore, TPs effectively enhanced adhesion strength, with the optimal addition being 5.0 %. This enhancement can be attributed to hydrogen bonding, hydrophobic and electrostatic interactions between TPs and SPI molecules. TPs induced a greater expansion of the protein structure, exposing numerous buried hydrophobic groups to a more hydrophilic and polar environment. However, excessive TPs were found to diminish adhesion strength. This can be attributed to enhanced reactions between TPs and SPI, where high molecular weight SPI-TPs cooperatively aggregate to form agglomerates that eventually precipitated, rendering the adhesive network inhomogeneous, less stable, and more prone to disruption.
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Affiliation(s)
- Zixi Xue
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China
| | - Minghao Zhang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China
| | - Meiquan Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China
| | - Shengnan Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China.
| | - Shumin Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
| | - Peng Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
| | - Jun Li
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
| | - He Liu
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou 121013, China
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3
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Ma Z, Zhao J, Zou Y, Mao X. The enhanced affinity of moderately hydrolyzed whey protein to EGCG promotes the isoelectric separation and unlocks the protective effects on polyphenols. Food Chem 2024; 450:138833. [PMID: 38653053 DOI: 10.1016/j.foodchem.2024.138833] [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: 09/19/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 04/25/2024]
Abstract
The instability and discoloration of (-)-epigallocatechin-3-gallate (EGCG) constrain its application in functional dairy products. Concurrently, challenges persist in the separation and utilization of whey in the dairy industry. By harnessing the interactions between polyphenols and whey proteins or their hydrolysates, this study proposed a method that involved limited enzymatic hydrolysis followed by the addition of EGCG and pH adjustment around the isoelectric point to obtain whey protein hydrolysates (WPH)-EGCG. Over 92 % of protein-EGCG complexes recovered from whey while ensuring the preservation of α-lactalbumin. The combination between EGCG and WPH depended on hydrogen bonding and hydrophobic interactions, significantly enhanced the thermal stability and storage stability of EGCG. Besides, the intestinal phase retention rate of EGCG in WPH-EGCG complex was significantly increased by 23.67 % compared to free EGCG. This work represents an exploratory endeavor in the improvement of EGCG stability and expanding the utilization approaches of whey.
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Affiliation(s)
- Zhiyuan Ma
- College of Food Science and Nutritional Engineering, China Agricultural University, Key Laboratory of Functional Dairy, Ministry of Education, Beijing 100083, China
| | - Jiale Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Key Laboratory of Functional Dairy, Ministry of Education, Beijing 100083, China
| | - Yang Zou
- Tianjin Haihe Dairy Co., LTD, China
| | - Xueying Mao
- College of Food Science and Nutritional Engineering, China Agricultural University, Key Laboratory of Functional Dairy, Ministry of Education, Beijing 100083, China.
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4
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Wang J, Cao J, Xu N, Meng T, Zhang G, Zhang Y. Ultrasound-enhanced covalent reaction of gliadin: the inhibition of antigenicity and its potential mechanisms. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:6127-6138. [PMID: 38442023 DOI: 10.1002/jsfa.13436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/20/2024] [Accepted: 03/05/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND Wheat proteins can be divided into water/salt-soluble protein (albumin/globulin) and water/salt-insoluble protein (gliadins and glutenins (Glu)) according to solubility. Gliadins (Glia) are one of the major allergens in wheat. The inhibition of Glia antigenicity by conventional processing techniques was not satisfactory. RESULTS In this study, free radical oxidation was used to induce covalent reactions. The effects of covalent reactions by high-intensity ultrasound (HIU) of different powers was compared. The enhancement of covalent grafting effectiveness between gliadin and (-)-epigallo-catechin 3-gallate (EGCG) was confirmed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, matrix-assisted laser desorption/ionization-time-of-flight-mass spectrometry and Folin-Ciocalteu tests. HIU caused protein deconvolution and disrupted the intrastrand disulfide bonds that maintain the tertiary structure, causing a shift in the side chain structure, as proved by Fourier, fluorescence and Raman spectroscopic analysis. Comparatively, the antigenic response of the conjugates formed in the sonication environment was significantly weaker, while these conjugates were more readily hydrolyzed and less antigenic during simulated gastrointestinal fluid digestion. CONCLUSION HIU-enhanced free radical oxidation caused further transformation of the spatial structure of Glia, which hid or destroyed the antigenic epitope, effectively inhibiting protein antigenicity. This study widened the application of polyphenol modification in the inhibition of wheat allergens. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Junrong Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Jiaxing Cao
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Ning Xu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Taihe Meng
- Cofco Flour Industry (Wuhan) Co. Ltd, Wuhan, China
| | - Guozhi Zhang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Yu Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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5
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Miao Q, He Y, Sun H, Olajide TM, Yang M, Han B, Liao X, Huang J. Effects of preheat treatment and syringic acid modification on the structure, functional properties, and stability of black soybean protein isolate. J Food Sci 2024; 89:3577-3590. [PMID: 38720591 DOI: 10.1111/1750-3841.17087] [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: 12/26/2023] [Revised: 03/25/2024] [Accepted: 04/08/2024] [Indexed: 06/14/2024]
Abstract
This study investigated preheated (25-100°C) black soybean protein isolate (BSPI) conjugated with syringic acid (SA) (25 and 50 µmol/g protein) under alkaline conditions, focusing on the structure, functional properties, and storage stability. The results revealed that the SA binding equivalent and binding rate on BSPI increased continuously as the preheat temperature increased. Additionally, preheating positively impacted the surface hydrophobicity (H0) of BSPI, with further enhancement observed upon SA binding. Preheating and SA binding altered the secondary and tertiary structure of BSPI, resulting in protein unfolding and increased molecular flexibility. The improvement in BSPI functional properties was closely associated with both preheating temperature and SA binding. Specifically, preheating decreased the solubility of BSPI but enhanced the emulsifying activity index (EAI) and foaming capacity (FC) of BSPI. Conversely, SA binding increased the solubility of BSPI with an accompanying increase in EAI, FC, foaming stability, and antioxidant activity. Notably, the BSPI100-SA50 exhibited the most significant improvement in functional properties, particularly in solubility, emulsifying, and foaming attributes. Moreover, the BSPI-SA conjugates demonstrated good stability of SA during storage, which positively correlated with the preheating temperature. This study proposes a novel BSPI-SA conjugate with enhanced essential functional properties, underscoring the potential of preheated BSPI-SA conjugates to improve SA storage stability. PRACTICAL APPLICATION: Preheated BSPI-SA conjugates can be used as functional ingredients in food or health products. In addition, preheated BSPI shows potential as a candidate for encapsulating and delivering hydrophobic bioactive compounds.
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Affiliation(s)
- Qianqian Miao
- Food Nutrition and Chronic Disease Intervention Laboratory, School of Life Sciences, Shanghai University, Shanghai, China
| | - Yiqing He
- Food Nutrition and Chronic Disease Intervention Laboratory, School of Life Sciences, Shanghai University, Shanghai, China
| | - Haiwen Sun
- Food Nutrition and Chronic Disease Intervention Laboratory, School of Life Sciences, Shanghai University, Shanghai, China
| | - Tosin Michael Olajide
- Wilmar (Shanghai) Biotechnology Research & Development Center Co., Ltd, Shanghai, China
| | - Minxin Yang
- Food Nutrition and Chronic Disease Intervention Laboratory, School of Life Sciences, Shanghai University, Shanghai, China
| | - Bingyao Han
- Residential College, Shanghai University, Shanghai, China
| | - Xianyan Liao
- Food Nutrition and Chronic Disease Intervention Laboratory, School of Life Sciences, Shanghai University, Shanghai, China
| | - Junyi Huang
- Food Nutrition and Chronic Disease Intervention Laboratory, School of Life Sciences, Shanghai University, Shanghai, China
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Yun Z, Li J, Zhu W, Yuan X, Zhao J, Liao M, Ma L, Chen F, Hu X, Ji J. Effects of Chlorogenic Acid on Lowering IgE-Binding Capacity of Soybean 7S: Comparison between Covalent and Noncovalent Interaction. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12270-12280. [PMID: 38743450 DOI: 10.1021/acs.jafc.4c01982] [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: 05/16/2024]
Abstract
Allergenicity of soybean 7S protein (7S) troubles many people around the world. However, many processing methods for lowering allergenicity is invalid. Interaction of 7S with phenolic acids, such as chlorogenic acid (CHA), to structurally modify 7S may lower the allergenicity. Hence, the effects of covalent (C-I, periodate oxidation method) and noncovalent interactions (NC-I) of 7S with CHA in different concentrations (0.3, 0.5, and 1.0 mM) on lowering 7S allergenicity were investigated in this study. The results demonstrated that C-I led to higher binding efficiency (C-0.3:28.51 ± 2.13%) than NC-I (N-0.3:22.66 ± 1.75%). The C-I decreased the α-helix content (C-1:21.06%), while the NC-I increased the random coil content (N-1:24.39%). The covalent 7S-CHA complexes of different concentrations had lower IgE binding capacity (C-0.3:37.38 ± 0.61; C-0.5:34.89 ± 0.80; C-1:35.69 ± 0.61%) compared with that of natural 7S (100%), while the noncovalent 7S-CHA complexes showed concentration-dependent inhibition of IgE binding capacity (N-0.3:57.89 ± 1.23; N-0.5:46.91 ± 1.57; N-1:40.79 ± 0.22%). Both interactions produced binding to known linear epitopes. This study provides the theoretical basis for the CHA application in soybean products to lower soybean allergenicity.
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Affiliation(s)
- Ze Yun
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Jiahao Li
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Wenyue Zhu
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Xin Yuan
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Jiajia Zhao
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Minjie Liao
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Lingjun Ma
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Fang Chen
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Xiaosong Hu
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Junfu Ji
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
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7
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Ma J, Tong P, Chen Q, Liu J, Li H, Long F. Covalent conjugation with polyphenol reduced the sensitization of walnut and ameliorated allergy by enhancing intestinal epithelial barrier in mice. Food Chem 2024; 439:138191. [PMID: 38091784 DOI: 10.1016/j.foodchem.2023.138191] [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: 09/15/2023] [Revised: 11/22/2023] [Accepted: 12/08/2023] [Indexed: 01/10/2024]
Abstract
In order to reduce the sensitization of walnut protein (WP), the effects of the interaction between WP and (-)-Epigallocatechin gallate (EGCG), quercetin, trans-ferulic acid, and resveratrol were investigated. Covalent and non-covalent conjugations were compared. The results suggested that covalent conjugation reduced the free amino acid content, sulfhydryl content, and surface hydrophobicity. When compared to non-covalent conjugation, covalent modification showed a lower IgE binding capacity, accompanied by changes in protein conformation. Moreover, animal experiments revealed that there were up-regulation of transforming growth factor-β, T-box expressed in t cells, and forkhead transcription factor Foxp3 mRNA expression, and down-regulation of IL-4, IL-17, GATA binding protein 3 and retinoid-related orphan nuclear receptor γt mRNA expression in the conjugate groups. These results suggested that covalent conjugation of polyphenols, especially EGCG, likely ameliorated allergy by promoting Th1/Th2 and Treg/Th17 balance and alleviating allergy-induced intestinal barrier damage, which might be a support in reducing the allergenicity of WP.
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Affiliation(s)
- Jing Ma
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Pengyan Tong
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Qiwen Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Jing Liu
- Institute of Animal Husbandry and Veterinary Medicine, Guizhou Academy of Agricultural Sciences, Guiyang 550005, China
| | - Huzhong Li
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, China
| | - Fangyu Long
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China.
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8
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Wu Y, Li Y, Liu H, Li P, Du B, Xie XA, Li L. Covalent conjugation of Inca peanut albumin and polyphenols with different phenolic hydroxyl numbers through laccase catalysis to improve functional properties. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:4028-4038. [PMID: 38252689 DOI: 10.1002/jsfa.13285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
BACKGROUND Enzymatic crosslinking is a method that can be used to modify Inca peanut albumin (IPA) using polyphenols, and provides desirable functionalities; however, the effect of polyphenol structures on conjugate properties is unclear. In this study, we selected four polyphenols with different numbers of phenolic hydroxyl groups [para-hydroxybenzoic acid (HBA), protocatechuic acid (PCA), gallic acid (GA), and epigallocatechin gallate (EGCG)] for covalent modification of IPA by enzymatic crosslinking, and explored the structure-function changes of the IPA-polyphenol conjugates. RESULTS Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) analysis showed that laccase successfully promoted covalent crosslinking of IPA with polyphenols, with the order of degree of conjugation as EGCG > GA > PCA > HBA, the IPA-EGCG conjugate showed the highest polyphenol binding equivalents (98.35 g kg-1 protein), and a significant reduction in the content of free amino, sulfhydryl, and tyrosine group. The oxidation of polyphenols by laccase forms quinone or semiquinone radicals that are covalently crosslinked to the reactive groups of IPA, leading to significant changes in the secondary and tertiary structures of IPA, with spherical structures transforming into dense lamellar structures. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability and emulsification stability of IPA-EGCG conjugates improved by almost 6-fold and 2.7-fold, respectively, compared with those of unmodified IPA. CONCLUSION These data suggest that the higher the number of polyphenol hydroxyl groups, the higher the degree of IPA-polyphenol conjugation; additionally, enzymatic crosslinking can significantly improve the functional properties of IPA. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yongqing Wu
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yanxin Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Honglang Liu
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xin-An Xie
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Lu Li
- College of Food Science, South China Agricultural University, Guangzhou, China
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9
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Li Z, Al-Wraikat M, Hao C, Liu Y. Comparison of Non-Covalent and Covalent Interactions between Lactoferrin and Chlorogenic Acid. Foods 2024; 13:1245. [PMID: 38672917 PMCID: PMC11048835 DOI: 10.3390/foods13081245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Adding polyphenols to improve the absorption of functional proteins has become a hot topic. Chlorogenic acid is a natural plant polyphenol with anti-inflammatory, antioxidant, and anticancer properties. Bovine lactoferrin is known for its immunomodulatory, anticancer, antibacterial, and iron-chelating properties. Therefore, the non-covalent binding of chlorogenic acid (CA) and bovine lactoferrin (BLF) with different concentrations under neutral conditions was studied. CA was grafted onto lactoferrin molecules by laccase catalysis, free radical grafting, and alkali treatment. The formation mechanism of non-covalent and covalent complexes of CA-BLF was analyzed by experimental test and theoretical prediction. Compared with the control BLF, the secondary structure of BLF in the non-covalent complex was rearranged and unfolded to provide more active sites, the tertiary structure of the covalent conjugate was changed, and the amino group of the protein participated in the covalent reaction. After adding CA, the covalent conjugates have better functional activity. These lactoferrin-polyphenol couplings can carry various bioactive compounds to create milk-based delivery systems for encapsulation.
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Affiliation(s)
- Zekun Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China; (Z.L.); (M.A.-W.)
| | - Majida Al-Wraikat
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China; (Z.L.); (M.A.-W.)
| | - Changchun Hao
- College of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China
| | - Yongfeng Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China; (Z.L.); (M.A.-W.)
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10
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Zhang C, Wang Z, Liu Q, Chen Q, Sun F, Liu H, Kong B. Solubilization strategy of myofibrillar proteins in low-ionic media (prototype soup): The effect of high-intensity ultrasound combined with non-covalent or covalent modification of polyphenols on myosin molecular assembly. Food Chem 2024; 436:137701. [PMID: 37839118 DOI: 10.1016/j.foodchem.2023.137701] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/17/2023] [Accepted: 10/07/2023] [Indexed: 10/17/2023]
Abstract
This study investigated the effect of (-)-Epigallocatechin-3-gallate (EGCG) non-covalent/covalent grafting onto myofibrillar protein (MP) by high-intensity ultrasound (HIU) on its water-solubility and filament forming behavior. The results showed that the introduction of EGCG, especially in the case of covalent grafting, could inhibit the molecular assembly of myosin and improve the MP water solubility from 2.7% to 53.1% (P < 0.05). The HIU pretreatment provided more opportunities for EGCG grafting onto the ultrasound-treated protein (UMP) by disrupting the filamentous polymerization of myosin and thus further facilitated MP dissolution. Additionally, compared with the UMP-EGCG non-covalent complexes, the covalent complexes with a yellow appearance exhibited a higher absolute zeta potential (35.9 mV) and a lower particle size (53.7 μm) (P < 0.05). Overall, the combination of HIU pretreatment and EGCG covalent modification may provide a promising method for improving the solubility and processing properties of MP in low ionic media (prototype soup).
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Affiliation(s)
- Chao Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Ziyi Wang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qian Liu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qian Chen
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Fangda Sun
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Haotian Liu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Baohua Kong
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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11
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Zhang K, Huang J, Wang D, Wan X, Wang Y. Covalent polyphenols-proteins interactions in food processing: formation mechanisms, quantification methods, bioactive effects, and applications. Front Nutr 2024; 11:1371401. [PMID: 38510712 PMCID: PMC10951110 DOI: 10.3389/fnut.2024.1371401] [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: 01/16/2024] [Accepted: 02/26/2024] [Indexed: 03/22/2024] Open
Abstract
Proteins and polyphenols are abundant in the daily diet of humans and their interactions influence, among other things, the texture, flavor, and bioaccessibility of food. There are two types of interactions between them: non-covalent interactions and covalent interactions, the latter being irreversible and more powerful. In this review, we systematically summarized advances in the investigation of possible mechanism underlying covalent polyphenols-proteins interaction in food processing, effect of different processing methods on covalent interaction, methods for characterizing covalent complexes, and impacts of covalent interactions on protein structure, function and nutritional value, as well as potential bioavailability of polyphenols. In terms of health promotion of the prepared covalent complexes, health effects such as antioxidant, hypoglycemic, regulation of intestinal microbiota and regulation of allergic reactions have been summarized. Also, the possible applications in food industry, especially as foaming agents, emulsifiers and nanomaterials have also been discussed. In order to offer directions for novel research on their interactions in food systems, nutritional value, and health properties in vivo, we considered the present challenges and future perspectives of the topic.
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Affiliation(s)
- Kangyi Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
- Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei, China
- New-style Industrial Tea Beverage Green Manufacturing Joint Laboratory of Anhui Province, Anhui Agricultural University, Hefei, China
| | - Jinbao Huang
- State Key Laboratory of Tea Plant Biology and Utilization, Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
- Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei, China
- New-style Industrial Tea Beverage Green Manufacturing Joint Laboratory of Anhui Province, Anhui Agricultural University, Hefei, China
| | - Dongxu Wang
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Xiaochun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yijun Wang
- State Key Laboratory of Tea Plant Biology and Utilization, Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
- Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei, China
- New-style Industrial Tea Beverage Green Manufacturing Joint Laboratory of Anhui Province, Anhui Agricultural University, Hefei, China
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12
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Liu J, Engholm-Keller K, Poojary MM, Bevilacqua M, Andersen ML, Lund MN. Reactivity and mechanism of the reactions of 4-methylbenzoquinone with amino acid residues in β-lactoglobulin: A kinetic and product investigation. Food Chem 2024; 434:137473. [PMID: 37738814 DOI: 10.1016/j.foodchem.2023.137473] [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: 09/20/2022] [Revised: 06/29/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
Quinones, produced by the oxidation of phenolic compounds, covalently bind to nucleophilic groups on amino acids or proteins. In this study, the reactions of 4-methylbenzoquinone (4MBQ) with β-lactoglobulin (β-LG) and amino acids at neutral pH were investigated. LC-MS analysis revealed that Cys121 was likely the most modified residue in β-LG. Identification of reaction products by LC-MS/MS showed that Michael addition occurred in all reactions with amino acids tested. The formation of Schiff base and a di-adduct was found in His and Trp samples. Apparent second-order rate constants (k2) were determined at 25 °C and pH 7.0 by stopped-flow spectrophotometry. The rate of reactions decreased in the order: β-LG > His > Trp > Arg > Nα-acetyl His > Nα-acetyl Arg > Nα-acetyl Trp. The rate constants correlated with the pKa values of the amino acids, showing that the amount of unprotonated amine is the major factor determining the reactivity.
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Affiliation(s)
- Jingyuan Liu
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Kasper Engholm-Keller
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Mahesha M Poojary
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Marta Bevilacqua
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Mogens L Andersen
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark.
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13
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Xu X, Cao Q, Yuan J, Tong P, Li X, Yang A, Wu Z, Liu X, Chen H, Gao J. Shedding light on the interaction of ovalbumin and resveratrol: structure, digestibility, transport, and allergenicity assessment of OVA-RES complexes. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:1645-1655. [PMID: 37850306 DOI: 10.1002/jsfa.13052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 10/10/2023] [Accepted: 10/18/2023] [Indexed: 10/19/2023]
Abstract
BACKGROUND The interaction between food allergens and plant polyphenols has become a safe and effective management strategy to prevent food allergies. Ovalbumin (OVA) is the most abundant allergen in egg whites. Resveratrol (RES) is a plant polyphenol that is abundant in red grapes, berries, and peanuts, and has an anti-allergic effect on allergy-related immune cells. However, there is little information about the effect of RES on the allergenicity of OVA. In this study, the effect of RES on the allergenicity of OVA was investigated. RESULTS Molecular docking and spectroscopic studies indicated that the addition of RES changed the structure of OVA. The digestion and transfer rate of OVA-RES were effectively improved with an in vitro gastrointestinal digestion model and Caco-2 cell model, especially when the molar ratio of OVA-RES was 1:20. Meanwhile, the KU812 cell degranulation assay proved that the potential allergenicity was remarkably decreased while the molar ratios of OVA-RES were increased to 1:20. Furthermore, hydrogen bonds and van der Waals forces were the dominating forces to stabilize the OVA-RES complexes. CONCLUSION All the findings demonstrated that the potential allergenicity of OVA was reduced when interacting with RES, and RES can be a potential food material for preparing a hypoallergenic protein, especially for egg allergy. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Xiaoqian Xu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- College of Food Science and Technology, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
| | - Qiang Cao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- College of Food Science and Technology, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
| | - Jin Yuan
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- College of Food Science and Technology, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
| | - Ping Tong
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
| | - Xin Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- College of Food Science and Technology, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
| | - Anshu Yang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, People's Republic of China
| | - Zhihua Wu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, People's Republic of China
| | - Xiaohua Liu
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, People's Republic of China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, People's Republic of China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang, People's Republic of China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, People's Republic of China
| | - Jinyan Gao
- College of Food Science and Technology, Nanchang University, Nanchang, People's Republic of China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, People's Republic of China
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14
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Liao G, Kang J, Zhang H, Cui Y, Xiong S, Liu Y. Covalent and non-covalent interaction of myofibrillar protein and cyanidin-3-O-glucoside: focus on structure, binding sites and in vitro digestion properties. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:905-915. [PMID: 37699084 DOI: 10.1002/jsfa.12978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/23/2023] [Accepted: 09/09/2023] [Indexed: 09/14/2023]
Abstract
BACKGROUND The aim of this study was to investigate the effects of covalent and non-covalent interactions between myofibrillar protein (MP) and cyanidin-3-O-glucoside (C3G) on protein structure, binding sites, and digestion properties. Four methods of inducing covalent cross-linking were used in the preparation of MP-C3G conjugates, including tyrosinase-catalyzed oxidation, alkaline pH shift treatment, free radical grafting, and ultrasonic treatment. A comparison was made between MP-C3G conjugates and complexes, and the analysis included sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), C3G binding ratio, liquid chromatography-tandem mass spectrometry (LC-MS/MS), protein side-chain amino acids, circular dichroism spectroscopy, three-dimensional fluorescence, particle size, and in vitro simulated digestion. RESULTS Covalent bonding between C3G and amino acid side chains in MP was confirmed by LC-MS/MS. In covalent bonding, tryptophan residues, free amino groups and sulfhydryl groups were all implicated. Among the 22 peptides covalently modified by C3G, 30 modification sites were identified, located in lysine, histidine, tryptophan, arginine and cysteine. In vitro simulated digestion experiments showed that the addition of C3G significantly reduced the digestibility of MP, with the covalent conjugate showing lower digestibility than the non-covalent conjugate. Moreover, the digestibility of protein decreased more during intestinal digestion, possibly because covalent cross-linking of C3G and MP further inhibited trypsin targeting sites (lysine and arginine). CONCLUSION Covalent cross-linking of C3G with myofibrillar proteins significantly affected protein structure and reduced protein digestibility by occupying more trypsin binding sites. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Guangming Liao
- College of Food Science and Technology, Huazhong Agricultural University, National R & D Branch Center for Conventional Freshwater Fish Processing, Wuhan, People's Republic of China
| | - Jiajia Kang
- College of Food Science and Technology, Huazhong Agricultural University, National R & D Branch Center for Conventional Freshwater Fish Processing, Wuhan, People's Republic of China
| | - Haiping Zhang
- College of Food Science and Technology, Huazhong Agricultural University, National R & D Branch Center for Conventional Freshwater Fish Processing, Wuhan, People's Republic of China
| | - Ying Cui
- College of Food Science and Technology, Huazhong Agricultural University, National R & D Branch Center for Conventional Freshwater Fish Processing, Wuhan, People's Republic of China
| | - Shanbai Xiong
- College of Food Science and Technology, Huazhong Agricultural University, National R & D Branch Center for Conventional Freshwater Fish Processing, Wuhan, People's Republic of China
| | - Youming Liu
- College of Food Science and Technology, Huazhong Agricultural University, National R & D Branch Center for Conventional Freshwater Fish Processing, Wuhan, People's Republic of China
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15
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Zang Z, Tian J, Chou S, Lang Y, Tang S, Yang S, Yang Y, Jin Z, Chen W, Liu X, Huang W, Li B. Investigation on the interaction mechanisms for stability of preheated whey protein isolate with anthocyanins from blueberry. Int J Biol Macromol 2024; 255:127880. [PMID: 37944731 DOI: 10.1016/j.ijbiomac.2023.127880] [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: 07/20/2023] [Revised: 10/24/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
Proteins and anthocyanins coexist in complex food systems. This research mainly studied the steady-state protective design and mechanism of the preheated protein against anthocyanins. Multispectral and molecular dynamics are utilized to illustrate the interaction mechanism between preheated whey protein isolate (pre-WPI) and anthocyanins. The pre-WPI could effectively protect the stability of anthocyanins, and the effect was better than that of the natural whey protein isolate (NW). Among them, NW after preheating treatment at 55 °C showed better protection against anthocyanin stability. Fluorescence studies indicated that pre-WPI there existed a solid binding affinity and static quenching for malvidin-3-galactoside (M3G). Multispectral data showed a significant variation in the secondary structure of pre-WPI. Furthermore, molecular dynamics simulation selects AMBER18 as the protein force field, and the results showed that hydrogen bonding participated as an applied force. Compared with NW, pre-WPI could better wrap anthocyanins and avoid damage to the external environment due to tightening of the pockets. Protein protects anthocyanins from degradation, and this protective effect is influenced by the preheating temperature of protein and the structure of protein. On the basis of the above results, it is possible to pinpoint the interaction mechanism between preheated proteins and anthocyanins.
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Affiliation(s)
- Zhihuan Zang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Jinlong Tian
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.
| | - Shurui Chou
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Yuxi Lang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Siyi Tang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Shufang Yang
- Zhejiang Lanmei Technology Co., Ltd. Zhuji, Zhejiang 311800, China
| | - Yiyun Yang
- Zhejiang Lanmei Technology Co., Ltd. Zhuji, Zhejiang 311800, China
| | - Zhufeng Jin
- Zhejiang Lanmei Technology Co., Ltd. Zhuji, Zhejiang 311800, China
| | - Wei Chen
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Xiaoli Liu
- Jiangsu Academy of Agricultural Sciences, Institution of Argo-product Processing, Nanjing 210014, China
| | - Wuyang Huang
- Jiangsu Academy of Agricultural Sciences, Institution of Argo-product Processing, Nanjing 210014, China
| | - Bin Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.
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Wróblewska B, Kuliga A, Wnorowska K. Bioactive Dairy-Fermented Products and Phenolic Compounds: Together or Apart. Molecules 2023; 28:8081. [PMID: 38138571 PMCID: PMC10746084 DOI: 10.3390/molecules28248081] [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: 11/10/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Fermented dairy products (e.g., yogurt, kefir, and buttermilk) are significant in the dairy industry. They are less immunoreactive than the raw materials from which they are derived. The attractiveness of these products is based on their bioactivity and properties that induce immune or anti-inflammatory processes. In the search for new solutions, plant raw materials with beneficial effects have been combined to multiply their effects or obtain new properties. Polyphenols (e.g., flavonoids, phenolic acids, lignans, and stilbenes) are present in fruit and vegetables, but also in coffee, tea, or wine. They reduce the risk of chronic diseases, such as cancer, diabetes, or inflammation. Hence, it is becoming valuable to combine dairy proteins with polyphenols, of which epigallocatechin-3-gallate (EGCG) and chlorogenic acid (CGA) show a particular predisposition to bind to milk proteins (e.g., α-lactalbumin β-lactoglobulin, αs1-casein, and κ-casein). Reducing the allergenicity of milk proteins by combining them with polyphenols is an essential issue. As potential 'metabolic prebiotics', they also contribute to stimulating the growth of beneficial bacteria and inhibiting pathogenic bacteria in the human gastrointestinal tract. In silico methods, mainly docking, assess the new structures of conjugates and the consequences of the interactions that are formed between proteins and polyphenols, as well as to predict their action in the body.
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Affiliation(s)
- Barbara Wróblewska
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, 10-748 Olsztyn, Poland; (A.K.); (K.W.)
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17
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Wang Y, Zhou J, Tian X, Bai L, Ma C, Chen Y, Li Y, Wang W. Effects of Covalent or Noncovalent Binding of Different Polyphenols to Acid-Soluble Collagen on Protein Structure, Functionality, and Digestibility. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:19020-19032. [PMID: 37991476 DOI: 10.1021/acs.jafc.3c06510] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
In this study, the structure, function, and digestibility of noncovalent complexes and covalent conjugates formed by acid-soluble collagen with polyphenols of different structures (quercetin, epicatechin, gallic acid, chlorogenic acid, procyanidin, and tannic acid) were investigated. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) showed that polyphenols were covalently bound to collagen by laccase catalytic oxidation. Biolayer interferometry revealed that the noncovalent binding strength of polyphenols to collagen from high to low was quercetin > gallic acid > chlorogenic acid > epicatechin, which was consistent with the trend of covalent polyphenol binding. Procyanidin and tannic acid had strong noncovalent binding, but their covalent binding ability was weak. Compared with the pure collagen, the complexes improved emulsification and antioxidant properties (more than 2.5 times), and the conjugates exhibited better thermal stability (99.4-106.8 °C) and antidigestion ability (reduced by more than 37%). The finding sheds new light on the use of collagen as a functional food ingredient in the food industry.
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Affiliation(s)
- Yang Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jiaping Zhou
- Research Centre of Modern Analytical Technology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiaojing Tian
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Lei Bai
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Chenwei Ma
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yuan Chen
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yu Li
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Wenhang Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
- R&D Centre of Collagen Products, Xingjia Biotechnology Co. Ltd., Tianjin 300457, China
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18
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Dębińska A, Sozańska B. Dietary Polyphenols-Natural Bioactive Compounds with Potential for Preventing and Treating Some Allergic Conditions. Nutrients 2023; 15:4823. [PMID: 38004216 PMCID: PMC10674996 DOI: 10.3390/nu15224823] [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: 10/31/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
In light of the constantly increasing prevalence of allergic diseases, changes in dietary patterns have been suggested as a plausible environmental explanation for the development and progression of these diseases. Nowadays, much attention has been paid to the development of dietary interventions using natural substances with anti-allergy activities. In this respect, dietary polyphenols have been studied extensively as one of the most prominent natural bioactive compounds with well-documented anti-inflammatory, antioxidant, and immunomodulatory properties. This review aims to discuss the mechanisms underlying the potential anti-allergic actions of polyphenols related to their ability to reduce protein allergenicity, regulate immune response, and gut microbiome modification; however, these issues need to be elucidated in detail. This paper reviews the current evidence from experimental and clinical studies confirming that various polyphenols such as quercetin, curcumin, resveratrol, catechins, and many others could attenuate allergic inflammation, alleviate the symptoms of food allergy, asthma, and allergic rhinitis, and prevent the development of allergic immune response. Conclusively, dietary polyphenols are endowed with great anti-allergic potential and therefore could be used either for preventive approaches or therapeutic interventions in relation to allergic diseases. Limitations in studying and widespread use of polyphenols as well as future research directions are also discussed.
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Affiliation(s)
- Anna Dębińska
- Department and Clinic of Paediatrics, Allergology and Cardiology, Wrocław Medical University, ul. Chałubińskiego 2a, 50-368 Wrocław, Poland;
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19
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Deng Z, Xia Y, Chen L, Zhao Y, Wang R, Liang G. Insight into covalent conjugates of β-lactoglobulin with rutin: Characterizing allergenicity, digestibility, and antioxidant properties in vitro. Food Res Int 2023; 173:113401. [PMID: 37803745 DOI: 10.1016/j.foodres.2023.113401] [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: 05/11/2023] [Revised: 08/22/2023] [Accepted: 08/26/2023] [Indexed: 10/08/2023]
Abstract
β-lactoglobulin (β-LG) is an essential nutrient in milk, but it is the primary allergen causing dairy allergy in humans. Currently, researchers are focusing on using flavonoids to covalently modify β-LG for improving its functionality. However, the impact and underlying mechanisms of rutin covalent modification on the functional properties and allergenicity of β-LG remain unclear. Here, we aim to investigate the changes in allergenicity, digestive characteristics, and antioxidant properties of β-LG after covalent modification using a combination of spectroscopy, enzyme-linked immunosorbent assay (ELISA), simulated digestion, and antioxidant assays. The results indicate that rutin forms covalent bonds with the free amino group, sulfhydryl group, and tryptophan of β-LG, leading to alterations in the secondary structure of β-LG. Furthermore, the modified β-LG exhibits improved antioxidant capacity and decreased allergenicity, along with reduced resistance to pancreatin digestion in vitro. This study provides novel insights and strategies to expand the functional application of β-LG.
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Affiliation(s)
- Zhifen Deng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Yuting Xia
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Lang Chen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Yi Zhao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Ruihong Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Guizhao Liang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
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20
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Pi X, Liu J, Peng Z, Liang S, Cheng J, Sun Y. Comparison of proanthocyanidins A2 and B2 on IgE-reactivity and epitopes in Gly m 6 using multispectral, LC/MS-MS and molecular docking. Int J Biol Macromol 2023; 249:126026. [PMID: 37506791 DOI: 10.1016/j.ijbiomac.2023.126026] [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: 03/15/2023] [Revised: 07/23/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
This study comparatively analyzed the changes in IgE-reactivity and epitopes in proanthocyanidins A2- (PA-Gly m 6) and B2-Gly m 6 (PB-Gly m 6) conjugates prepared by alkali treatment at 80 °C for 20 min. Similar to the western blot, ELISA also showed a higher reduced IgE-reactivity in PA-Gly m 6 (70.12 %) than PB-Gly m 6 (63.17 %). SDS-PAGE demonstrated that proanthocyanidins A2 caused more formation of >180 kDa polymers than proanthocyanidins B2. Multispectral analyses revealed that PA-Gly m 6 exhibited more structural alteration (e.g., a decrease of α-helical content and ANS fluorescence intensity) to unfold protein structure than proanthocyanidins B2, improving the accessibility to modify Gly m 6 for shielding or destroying conformational epitopes. LC/MS-MS revealed that PA-Gly m 6 conjugates had a lower abundance of allergens, peptides and linear epitopes than PB-Gly m 6 conjugates. Molecular docking showed that proanthocyanidins A2 and B2 reacted with Gln-317 and Asn-94 of epitopes, respectively. Overall, proanthocyanidins A2 is more effective than proanthocyanidins B2 to decrease the IgE-reactivity of Gly m 6 due to more shielding or destruction of conformational epitopes and lower content allergens and linear epitopes, which was attributed to more protein-crosslinks formation and structural changes in PA-Gly m 6 conjugates.
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Affiliation(s)
- Xiaowen Pi
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Jiafei Liu
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Zeyu Peng
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Shuxia Liang
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Jiangsu DAISY FSMP Co., Ltd, Nantong, Jiangsu 226133, China
| | - Jianjun Cheng
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Yuxue Sun
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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21
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Li D, Wang R, Ma Y, Yu D. Covalent modification of (+)-catechin to improve the physicochemical, rheological, and oxidative stability properties of rice bran protein emulsion. Int J Biol Macromol 2023; 249:126003. [PMID: 37517762 DOI: 10.1016/j.ijbiomac.2023.126003] [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: 06/06/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023]
Abstract
The aim of this study is the effects of (+)-catechin (CC) covalent cross-linking (CCCI) (0.05-0.25 %, w/v) on the physicochemical properties, rheological properties, and oxidative stability of rice bran protein (RBP) emulsion. Analysis of particle size, ζ-potential, circular dichroism, fluorescence spectroscopy, surface hydrophobicity, and emulsifying properties demonstrated that a concentration of 0.15 % (w/v) CCCI facilitated protein structure unfolding, resulting in reduced particle size, enhanced electrostatic repulsion, and improved emulsion stability. Moreover, the covalent complexes of RBP-0.15 %CC (w/v) exhibited increased viscosity and shear stress, reflected by the highest G' and G″ values, ultimately enhancing the oxidative stability. Furthermore, analysis using atomic force microscopy and confocal laser scanning microscopy revealed that the RBP-0.15 %CC complexes exhibited the smallest particle size (164 nm) and displayed greater homogeneity. An increase in CC concentration to 0.25 % (w/v) resulted in a higher emulsion aggregation. The emulsions stabilized by CCCI exhibited superior rheological properties and enhanced oxidation stability compared to the control. In conclusion, an appropriate amount of CC can enhance the rheology and oxidation stability of the RBP emulsion, while CCCI treatment holds potential for expanding the utility of RBP in various applications.
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Affiliation(s)
- Dan Li
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Rongchun Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Ying Ma
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Dianyu Yu
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
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22
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Zhang R, Jia W. Deciphering the competitive binding interaction of β-lactoglobulin with benzaldehyde and vanillic acid via high-spatial-resolution multi-spectroscopic. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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23
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Pu P, Deng Z, Chen L, Yang H, Liang G. Reducing Antigenicity and Improving Antioxidant Capacity of β-Lactoglobulin through Covalent Interaction with Six Flavonoids. Foods 2023; 12:2913. [PMID: 37569182 PMCID: PMC10418627 DOI: 10.3390/foods12152913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/27/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
β-lactoglobulin (β-LG) is a pivotal nutritional and functional protein. However, its application is limited by its antigenicity and susceptibility to oxidation. Here, we explore the impact of covalent modification by six natural compounds on the antigenicity and antioxidant characteristics of β-LG to explore the underlying interaction mechanism. Our findings reveal that the covalent interaction of β-LG and flavonoids reduces the antigenicity of β-LG, with the following inhibition rates: epigallocatechin-3-gallate (EGCG) (57.0%), kaempferol (42.4%), myricetin (33.7%), phloretin (28.6%), naringenin (26.7%), and quercetin (24.3%). Additionally, the β-LG-flavonoid conjugates exhibited superior antioxidant capacity compared to natural β-LG. Our results demonstrate that the significant structural modifications from α-helix to β-sheet induced by flavonoid conjugation elicited distinct variations in the antigenicity and antioxidant activity of β-LG. Therefore, the conjugation of β-LG with flavonoids presents a prospective method to reduce the antigenicity and enhance the antioxidant capacity of β-LG.
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Affiliation(s)
| | | | | | | | - Guizhao Liang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400044, China
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24
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Panagiotou E, Andreou E, Nicolaou SA. The Effect of Dietary Components of the Mediterranean Diet on Food Allergies: A Systematic Review. Nutrients 2023; 15:3295. [PMID: 37571232 PMCID: PMC10420808 DOI: 10.3390/nu15153295] [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: 07/05/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 08/13/2023] Open
Abstract
Allergies are a common and increasing health problem affecting millions of people worldwide. This increase is attributed to genetic predisposition, air pollution, climate change, lack of physical activity, and alterations in eating habits. The Mediterranean diet (MD), which includes a lot of fruits and vegetables, whole grains, legumes, nuts, olive oil, and fish, has been linked to a variety of health benefits, including a lower risk of chronic and allergic disease. This paper explores the effects of the dietary components of the MD on food allergies. Electronic databases PubMed, Scopus, Science Direct, and EBSCO were used to conduct this systematic review. Out of 696 studies initially identified, five human and four animal studies were included. Risk of bias was determined using the Office of Health Assessment and Translation tool. In human studies, when the intervention was given during pregnancy and lactation, a beneficial effect was observed. When the intervention was given during pregnancy and until birth or to the infant for six months, no effect was observed. The animal studies indicated a beneficial effect between the food components of the MD and food allergies. Although the results are promising, the limited number of studies highlights the need for more research.
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Affiliation(s)
| | | | - Stella A. Nicolaou
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (E.P.); (E.A.)
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25
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Börsig A, Konar N, Dalabasmaz S. A model study on the site-specificity of (-)-epicatechin-induced reactions in β-lactoglobulin by high-resolution mass spectrometry in combination with bioinformatics. Food Chem 2023; 408:135242. [PMID: 36566544 DOI: 10.1016/j.foodchem.2022.135242] [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: 07/20/2022] [Revised: 11/23/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
Polyphenol-protein reactions in model solutions of β-lactoglobulin (β-LG) incubated with (-)-epicatechin at 37 °C and 60 °C were monitored by microLC-timsTOF Pro-MS/MS combined with bioinformatics strategies. The addition of (-)-epicatechin to the model solutions resulted in changes in tryptic peptide profiles. Covalent bond formation between (-)-epicatechin o-quinones and β-LG was identified for the residues S27, S30, K60, C66, K69, and C160, with C160 being the predominant binding site. Furthermore, the incubation of β-LG with (-)-epicatechin significantly promoted oxidation, especially for the residues M7 and M24. The reaction of monomeric (-)-epicatechino-quinone at C160 was also identified in the milk chocolate sample. The adaptation of this study by extending the scope of the reaction products offers significant potential for comprehensive food profiling strategies.
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Affiliation(s)
- Amelie Börsig
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany.
| | - Nevzat Konar
- Department of Food Engineering, Eskisehir Osmangazi University, 26160 Eskisehir, Turkey.
| | - Sevim Dalabasmaz
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany.
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26
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Dalabasmaz S, Toker ÖS, Palabiyik I, Konar N. Cocoa polyphenols and milk proteins: covalent and non-covalent interactions, chocolate process and effects on potential polyphenol bioaccesibility. Crit Rev Food Sci Nutr 2023:1-13. [PMID: 37154036 DOI: 10.1080/10408398.2023.2207661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In this study, we discussed covalent and non-covalent reactions between cocoa polyphenols and proteins (milk and cocoa) and the possible effects of these reactions on their bioaccessibility, considering environmental and processing conditions. Better insight into these interactions is crucial for understanding the biological effects of polyphenols, developing nutritional strategies, and improving food processing and storage. Protein-polyphenol reactions affect the properties of the final product and can lead to the formation of various precursors at various stages in the manufacturing process, such as fermentation, roasting, alkalization, and conching. Due to the complex composition of the chocolate and the various technological processes, comprehensive food profiling strategies should be applied to analyze protein-polyphenol covalent reactions covering a wide range of potential reaction products. This will help to identify potential effects on the bioaccessibility of bioactive compounds such as low-molecular-weight peptides and polyphenols. To achieve this, databases of potential reaction products and their binding sites can be generated, and the effects of various process conditions on related parameters can be investigated. This would then allow to a deeper insight into mechanisms behind protein-polyphenol interactions in chocolate, and develop strategies to optimize chocolate production for improved nutritional and sensory properties.
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Affiliation(s)
- Sevim Dalabasmaz
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Ömer Said Toker
- Faculty of Chemical and Metallurgical Engineering, Food Engineering Department, Yıldız Technical University, İstanbul, Turkey
| | - Ibrahim Palabiyik
- Agriculture Faculty, Food Engineering Department, Tekirdag Namik Kemal University, Tekirdag, Turkey
| | - Nevzat Konar
- Agriculture Faculty, Dairy Technology Department, Ankara University, Ankara, Turkey
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27
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Tao X, Chen C, Li Y, Qin X, Zhang H, Hu Y, Liu Z, Guo X, Liu G. Improving the antioxidant activity, in vitro digestibility and reducing the allergenicity of whey protein isolate by glycosylation with short-chain inulin and interaction with cyanidin-3-glucoside. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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28
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Li L, Chai W, Ma L, Zhang T, Chen J, Zhang J, Wu X. Covalent polyphenol with soybean 11S protein to develop hypoallergenic conjugates for potential immunotherapy. J Funct Foods 2023. [DOI: 10.1016/j.jff.2023.105518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
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29
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Zhou E, Xue X, Xu H, Zhao L, Wu L, Li Q. Effects of covalent conjugation with quercetin and its glycosides on the structure and allergenicity of Bra c p from bee pollen. Food Chem 2023; 406:135075. [PMID: 36462363 DOI: 10.1016/j.foodchem.2022.135075] [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: 08/25/2022] [Revised: 11/11/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
Profilin family members are potential pan-allergens in foods, presenting public health hazards. However, studies on the allergenicity modification of profilin allergens are limited. Herein, quercetin and its glycosides (isoquercitrin and rutin) were applied to modify the allergenicity of a profilin allergen (Bra c p) from Brassica campestris bee pollen. Results showed that only quercetin can be closely covalently bound to Bra c p among the three, and the binding site was located at the Cys98 residue. After covalently conjunction, the relative content of α-helix structure in Bra c p was reduced by 40.05%, while random coil was increased by 42.89%; moreover, the Tyr and Phe residues in Bra c p were masked. These structural changes could alter the conformational antigenic epitopes of Bra c p, resulting in its allergenicity reduction. Our findings might provide a technical foundation for reducing the allergenicity of bee pollen and foods containing profilin family allergens.
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Affiliation(s)
- Enning Zhou
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100093, China
| | - Xiaofeng Xue
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100093, China
| | - Haoxie Xu
- Institute of Advanced Study, Shenzhen University, Shenzhen, Guangdong Province 518060, China
| | - Liuwei Zhao
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100093, China
| | - Liming Wu
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100093, China.
| | - Qiangqiang Li
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100093, China.
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30
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Xue YT, Han YN, Wang Y, Zhang YH, Yin YQ, Liu BH, Zhang HL, Zhao XH. Effect of ferulic acid covalent conjugation on the functional properties and antigenicity of β-lactoglobulin. Food Chem 2023; 406:135095. [PMID: 36463600 DOI: 10.1016/j.foodchem.2022.135095] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 11/06/2022] [Accepted: 11/25/2022] [Indexed: 12/03/2022]
Abstract
Binding to phenolics can improve the functional properties of proteins. Changes in structure, functional properties, and antigenicity of β-lactoglobulin (β-LG) after covalent conjugation with ferulic acid (FA) at different mass ratios were reported here. The results of SDS-PAGE and gel exclusion chromatography confirmed that covalent complexes were formed. When the mass ratio of β-LG and FA was 10:6, the binding content of FA was the highest. Fluorescence spectroscopy, UV-visible absorption spectrometry, and FTIR analysis showed that the structure of the complexes was more stretched compared to native β-LG. The addition of FA significantly improved the emulsifying property of β-LG. When the mass ratio was 10:6, the radical scavenging activities of DPPH and ABTS reached 65.06% and 88.22%, respectively, and the antigenicity of β-LG reduced by about 35%. This study provides novel β-LG-FA complexes in food systems to reduce the antigenicity of β-LG and improve functional properties.
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Affiliation(s)
- Yu-Ting Xue
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China; Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China
| | - Ya-Ning Han
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China; Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China
| | - Yan Wang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China; Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China
| | - Ying-Hua Zhang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China; Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China; National Center of Technology Innovation for Dairy, Hohhot 010020, PR China.
| | - Yu-Qi Yin
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China; Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China
| | - Bo-Hao Liu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China; Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China
| | - Han-Lin Zhang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China; Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China
| | - Xin-Huai Zhao
- Department of Food Science, Northeast Agricultural University, Harbin 150030, PR China; School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, PR China.
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31
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Pi X, Sun Y, Liu J, Peng Z, Liang S, Cheng J, Jiang Y. The alteration of composition, conformation, IgE-reactivity and functional attributes in proanthocyanidins-soy protein 7S conjugates formed by alkali-heating treatment: Multi-spectroscopic and proteomic analyses. Int J Biol Macromol 2023; 234:123672. [PMID: 36801228 DOI: 10.1016/j.ijbiomac.2023.123672] [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: 12/06/2022] [Revised: 02/03/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023]
Abstract
This study assessed the alteration of IgE-reactivity and functional attribute in soy protein 7S-proanthocyanidins conjugates (7S-80PC) formed by alkali-heating treatment (pH 9.0, 80 °C, 20 min). SDS-PAGE demonstrated that 7S-80PC exhibited the formation of >180 kDa polymers, although the heated 7S (7S-80) had no changes. Multispectral experiments revealed more protein unfolding in 7S-80PC than in 7S-80. Heatmap analysis showed that 7S-80PC showed more alteration of protein, peptide and epitope profiles than 7S-80. LC/MS-MS demonstrated that the content of total dominant linear epitopes was increased by 11.4 % in 7S-80, but decreased by 47.4 % in 7S-80PC. As a result, Western-blot and ELISA showed that 7S-80PC exhibited lower IgE-reactivity than 7S-80, probably because 7S-80PC exhibited more protein-unfolding to increase the accessibility of proanthocyanidins to mask and destroy the exposed conformational epitopes and dominant linear epitopes induced by heating treatment. Furthermore, the successful attachment of PC to soy 7S protein significantly increased antioxidant activity in 7S-80PC. 7S-80PC also showed higher emulsion activity than 7S-80 owing to its high protein flexibility and protein unfolding. However, 7S-80PC exhibited lower foaming properties than 7S-80. Therefore, the addition of proanthocyanidins could decrease IgE-reactivity and alter the functional attribute of the heated soy 7S protein.
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Affiliation(s)
- Xiaowen Pi
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Yuxue Sun
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Key Laboratory of Soy Biology of Chinese Education Ministry, Harbin 150030, China
| | - Jiafei Liu
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Zeyu Peng
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Shuxia Liang
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Jiangsu DAISY FSMP Co., Ltd, Nantong, Jiangsu 226133, China
| | - Jianjun Cheng
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Yunqing Jiang
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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32
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Xu J, Huang Y, Wei Y, Weng X, Wei X. Study on the Interaction Mechanism of Theaflavin with Whey Protein: Multi-Spectroscopy Analysis and Molecular Docking. Foods 2023; 12:foods12081637. [PMID: 37107433 PMCID: PMC10137913 DOI: 10.3390/foods12081637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/07/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
The interaction mechanism of whey proteins with theaflavin (TF1) in black tea was analyzed using multi-spectroscopy analysis and molecular docking simulations. The influence of TF1 on the structure of bovine serum albumin (BSA), β-lactoglobulin (β-Lg), and α-lactoalbumin (α-La) was examined in this work using the interaction of TF1 with these proteins. Fluorescence and ultraviolet-visible (UV-vis) absorption spectroscopy revealed that TF1 could interact with BSA, β-Lg and α-La through a static quenching mechanism. Furthermore, circular dichroism (CD) experiments revealed that TF1 altered the secondary structure of BSA, β-Lg and α-La. Molecular docking demonstrated that the interaction of TF1 with BSA/β-Lg/α-La was dominated by hydrogen bonding and hydrophobic interaction. The binding energies were -10.1 kcal mol-1, -8.4 kcal mol-1 and -10.4 kcal mol-1, respectively. The results provide a theoretical basis for investigating the mechanism of interaction between tea pigments and protein. Moreover, the findings offered technical support for the future development of functional foods that combine tea active ingredients with milk protein. Future research will focus on the effects of food processing methods and different food systems on the interaction between TF1 and whey protein, as well as the physicochemical stability, functional characteristics, and bioavailability of the complexes in vitro or in vivo.
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Affiliation(s)
- Jia Xu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Yi Huang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yang Wei
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xinchu Weng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Xinlin Wei
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
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33
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Cao J, Xu N, Zhang J, Zhang G, Zhang Y. Sonochemical Effects on the Preparation, Structure and Function of Gliadin-(-)-Epigallo-Catechin 3-Gallate Conjugates. Foods 2023; 12:foods12071376. [PMID: 37048197 PMCID: PMC10093291 DOI: 10.3390/foods12071376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/16/2023] [Accepted: 03/20/2023] [Indexed: 04/14/2023] Open
Abstract
It is essential to understand the mechanism of action of ultrasound synergistic free radical oxidation to promote covalent reactions between proteins and polyphenols. (-)-epigallo-catechin 3-gallate (EGCG) with rich bioactivity could be used to increase the functional properties of cereal protein-gliadin (GL). This study systematically explored the role of ultrasound treatment (US) on the binding mechanisms of GL and EGCG. Electrophoresis and high-performance liquid chromatography (HPLC) confirmed the greater molecular mass of the covalent complexes in the ultrasound environment. Quantitative analysis by the phenol content revealed that the ultrasound environment increased the EGCG content in the covalent complex by 15.08 mg/g of protein. The changes in the spatial structure of the proteins were indicated by Fourier infrared and ultraviolet spectroscopy. Additionally, scanning electron microscopy (SEM) and atomic force microscopy (AFM) found that US disrupted the aggregation of GL and the clustered structure of the covalent complexes. The results demonstrated that the water solubility of ultrasonic conjugates was significantly increased by 8.8-64.19%, the digestion rate was more efficient, and the radical scavenging capacity was twice that of GL. This research contributes to the theoretical basis for broadening the application of polyphenols in modifying protein.
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Affiliation(s)
- Jiaxing Cao
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Ning Xu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Jianhao Zhang
- College of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 201100, China
| | - Guozhi Zhang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yu Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
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34
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Insights into Feruloylated Oligosaccharide Impact on Gel Properties of Oxidized Myofibrillar Proteins Based on the Changes in Their Spatial Structure. Foods 2023; 12:foods12061222. [PMID: 36981149 PMCID: PMC10048018 DOI: 10.3390/foods12061222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 03/14/2023] Open
Abstract
Polyphenolic compounds can protect against myofibrillar protein (MP) oxidation in meat products. In this study, the inhibitory effect of feruloyl oligosaccharides (FOs) on MP oxidation was investigated, and the gel properties of MPs were further studied. The results showed that 50–100 μmol/g protein of FOs could effectively inhibit damage to amino acid side chains by reducing carbonyl contents by 60.5% and increasing sulfhydryl and free amine contents by 89.5% and 66%, which may protect the secondary and tertiary structures of MPs. Additionally, FOs at 50 μmol/g protein had better effects on the crosslinking of MPs, leading to effective improvements in the gel properties, which can be seen in the rheology properties, scanning electron microscope (SEM) photographs, and the distribution of water in the MP gel. On the contrary, 150–200 μmol/g protein of FOs showed peroxidative effects on oxidatively stressed MPs, which were detrimental to MPs and contributed to their denaturation in the electrophoresis analysis and irregular aggregation in the SEM analysis. The concentration-dependent effects of FOs depended on MP-FOs interactions, indicating that an appropriate concentration of FOs has the potential to protect MPs from oxidation and enhance the gelation ability of pork meat during processing.
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35
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Zhang X, Liu Y, Gong S, Li M, Li S, Hemar Y. Probing the biotoxicity of starch nanoparticles in vivo and their mechanism to desensitize β-lactoglobulin. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Pi X, Liu J, Sun Y, Sun X, Sun Z, Cheng J, Guo M. Investigation of the differences in the effect of (-)-epigallocatechin gallate and proanthocyanidins on the functionality and allergenicity of soybean protein isolate. Food Chem X 2023; 17:100566. [PMID: 36845520 PMCID: PMC9945447 DOI: 10.1016/j.fochx.2023.100566] [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: 08/02/2022] [Revised: 12/24/2022] [Accepted: 01/05/2023] [Indexed: 01/09/2023] Open
Abstract
In this study, the differences in effects of (-)-epigallocatechin gallate (EGCG) and proanthocyanidins (PC) on the functionality and allergenicity of soybean protein isolate (SPI) were studied. SDS-PAGE demonstrated that SPI-PC conjugates exhibited more high-molecular-weight polymers (>180 kDa) than SPI-EGCG conjugates. Structural analysis showed that SPI-PC conjugates exhibited more disordered structures and protein-unfolding, improving the accessibility of PC to modify SPI, compared to SPI-EGCG conjugates. LC/MS-MS demonstrated that PC caused more modification of SPI and major soybean allergens than EGCG, resulting in a lower abundance of epitopes. The successful attachment of EGCG and PC to SPI significantly increased antioxidant capacity in conjugates. Furthermore, SPI-PC conjugates exhibited greater emulsifying activity and lower immunoglobulin E (IgE) binding capacity than SPI-EGCG conjugates, which was attributed to more disordered structure and protein-unfolding in SPI-PC conjugates. It is implied that proanthocyanidins may be promising compounds to interact with soybean proteins to produce functional and hypoallergenic foods.
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Affiliation(s)
- Xiaowen Pi
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Jiafei Liu
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Yuxue Sun
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China,Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin, Heilongjiang 150030, China
| | - Xiaomeng Sun
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Zhigang Sun
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Jianjun Cheng
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China,Corresponding authors at: Northeast Agricultural University, No. 600, Changjiang Road, Harbin, China.
| | - Mingruo Guo
- Northeast Agricultural University, Harbin, Heilongjiang 150030, China,Department of Nutrition and Food Science, College of Agriculture and Life Sciences, University of Vermont, Burlington 05405, United States,Corresponding authors at: Northeast Agricultural University, No. 600, Changjiang Road, Harbin, China.
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37
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Shahidi F, Dissanayaka CS. Phenolic-protein interactions: insight from in-silico analyses – a review. FOOD PRODUCTION, PROCESSING AND NUTRITION 2023. [DOI: 10.1186/s43014-022-00121-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
AbstractPhenolic compounds are ubiquitous plant secondary metabolites that possess various biological activities and are known to interact with proteins, altering their structure and properties. Therefore, interactions between these compounds and proteins has gained increasing attention due to their potential benefits to human health and for exploitation by the food industry. Phenolic compounds and proteins can form complexes via covalent linkages and/or non-covalent interactions through hydrophobic, electrostatic, van der Waals forces and hydrogen bonding. This review describes possible mechanisms of phenol-protein complex formation, their physiological action and activities that are important in the food industry, and possible outcomes in the terms of molecular docking and simulation analysis. The conformational changes of the protein upon binding with polyphenols can lead to the folding or unfolding of the protein molecules, forming insoluble or soluble complexes. The concentration of polyphenols, their molecular weight and structure, ions/cofactors and conditions of the system determine the precipitation or solubilization of the complex, affecting their nutritional and functional properties as well as their bioactivities. In this regard, molecular docking and simulation studies of phenolic-protein interactions allows comprehensive virtual screening of competitive/non-competitive and site-specific/non-specific conjugation of phenolics with different protein targets and facilitates understanding the observed effects. The docking analysis of flavonoids with enzymes and milk proteins has indicated their potential application in producing nutraceuticals and functional foods. Thus, combining molecular docking and simulation studies with experimental techniques is vital for better understanding the reactions that take place during digestion to engineer and manufacture novel food ingredients with desirable pharmacological properties and as potential food additives.
Graphical Abstract
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38
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Characterization of the improved functionality in soybean protein-proanthocyanidins conjugates prepared by the alkali treatment. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108107] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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39
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Pan L, Chen J, Fu H, Wang N, Zhou J, Zhang S, Lu S, Dong J, Wang Q, Yan H. Effects of fabrication of conjugates between different polyphenols and bovine bone proteins on their structural and functional properties. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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40
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Liu J, Song G, Zhou L, Yuan Y, Wang D, Yuan T, Li L, He G, Xiao G, Chen F, Gong J. Sonochemical effects on fabrication, characterization and antioxidant activities of β-lactoglobulin-chlorogenic acid conjugates. ULTRASONICS SONOCHEMISTRY 2023; 92:106240. [PMID: 36470128 PMCID: PMC9722484 DOI: 10.1016/j.ultsonch.2022.106240] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
The β-lactoglobulin-chlorogenic acid (LG-CA) conjugate was explored to be formed through ultrasonication, redox-pair method and their combination, the ultrasonication used a probe ultrasonic machine with a 6 mm probe at 270 W, and the frequency was 20-25 kHz. The formation of the conjugate was confirmed by SDS-PAGE with a larger molecular weight. Besides, Fourier infrared spectroscopy (FTIR) and Circular dichroism (CD) indicated changes in the secondary structure of the LG-CA conjugate. The α-helix and β-sheet contents of LG decreased and the unordered content increased significantly after the formation of covalent complexes. In addition, both the ultrasonic treatment and its combination with redox-pair method could significantly improve the antioxidant properties of LG. The former increased to 23.16 μmol Trolox/g sample, the latter 82-106 μmol Trolox/g sample. Therefore, ultrasonication could be used both individually and in combination with the redox-pair method to produce LG-CA conjugates with stronger antioxidant activities.
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Affiliation(s)
- Jiayuan Liu
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Gongshuai Song
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Like Zhou
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Yawen Yuan
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Danli Wang
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Tinglan Yuan
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Ling Li
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Guanghua He
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Gongnian Xiao
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China
| | - Feng Chen
- Department of Food, Nutrition and Packaging Sciences, Clemson University, SC 29634, USA
| | - Jinyan Gong
- Zhejiang Provincial Key Lab for Biological and Chemical Processing Technologies of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang 310023, China.
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Liu C, Lv N, Xu YQ, Tong H, Sun Y, Huang M, Ren G, Shen Q, Wu R, Wang B, Cao Z, Xie H. pH-dependent interaction mechanisms between β-lactoglobulin and EGCG: Insights from multi-spectroscopy and molecular dynamics simulation methods. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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42
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Shi J, Cui YF, Zhou G, Li N, Sun X, Wang X, Xu N. Covalent interaction of soy protein isolate and chlorogenic acid: Effect on protein structure and functional properties. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Heat-induced changes in epitopes and IgE binding capacity of soybean protein isolate. Food Chem 2022; 405:134830. [DOI: 10.1016/j.foodchem.2022.134830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 10/25/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022]
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44
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El-Maksoud AAA, Cheng W, Petersen SV, Pandiselvam R, Guo Z. Covalent phenolic acid-grafted β-lactoglobulin conjugates: Synthesis, characterization, and evaluation of their multifunctional properties. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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45
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Protein modification, IgE binding capacity, and functional properties of soybean protein upon conjugation with polyphenols. Food Chem 2022; 405:134820. [DOI: 10.1016/j.foodchem.2022.134820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/27/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
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46
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Jia W, Zhu J, Wang X, Peng J, Shi L. Covalent or non-covalent binding of polyphenols, polysaccharides, metal ions and nanoparticles to beta-lactoglobulin and advanced processing techniques: Reduce allergenicity and regulate digestion of beta-lactoglobulin. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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47
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Luo X, Lu J, Wu Y, Duan W, An F, Huang Q, Chen L, Wei S. Reducing the potential allergenicity of amandin through binding to (-)-epigallocatechin gallate. Food Chem X 2022; 16:100482. [PMID: 36304206 PMCID: PMC9594120 DOI: 10.1016/j.fochx.2022.100482] [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: 07/21/2022] [Revised: 10/09/2022] [Accepted: 10/18/2022] [Indexed: 11/05/2022] Open
Abstract
Amandin (AMP) binding to EGCG changed protein structure. AMP bound to EGCG primarily through glutamate and cysteine residues. Alkaline and free radical methods dented AMP allergenic, but the principles differed.
Potential allergenicity of amandin was reduced by binding amandin with (−)-epigallocatechin gallate (EGCG) via alkaline, free radical, ultrasound-assisted alkaline, and ultrasound-assisted free radical methods. These results of total phenol content, free sulfhydryl group, free amino group, surface hydrophobicity, and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) indicated that amandin might be covalently bound to EGCG through reactive groups such as sulfhydryl and amino groups, or non-covalently through hydrophobic interactions. Fourier transformed infrared (FT-IR) spectroscopy and fluorescence spectroscopy revealed structural changes of amandin-EGCG conjugate, which also caused significant reduction in potential allergenicity of amandin. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) found that amandin bound to EGCG mainly through cysteine and glutamate residues, and linear epitope for amandin was reduced. This provided a new method and theoretical basis of hypoallergenic almond food.
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Affiliation(s)
- Xin Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Jiankang Lu
- Production & Construction Group Key Laboratory of Special Agricultural Products Further Processing in Southern Xinjiang, Xinjiang Province, 843300, China
| | - Yongyan Wu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Wenshan Duan
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Fengping An
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Qun Huang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China,Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education & Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang 550004, Guizhou, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
| | - Lei Chen
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
| | - Shaofeng Wei
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
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Wang Y, Yang C, Zhang J, Zhang L. Interaction between whey protein isolate and rose anthocyanin extracts at different pHs: Structure, emulsification and digestibility of complexes. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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Co-assembled C13-dipeptide hydrogels by Gallic Acid (CA) and epigallocatechin gallate (EGCG) with antibacterial activity. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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50
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Effect of proanthocyanidins on protein composition, conformational structure, IgE binding capacities and functional properties in soybean protein. Int J Biol Macromol 2022; 224:881-892. [DOI: 10.1016/j.ijbiomac.2022.10.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/12/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
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