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Li J, Wang X, Chang C, Gu L, Su Y, Yang Y, Agyei D, Han Q. Chicken Egg White Gels: Fabrication, Modification, and Applications in Foods and Oral Nutraceutical Delivery. Foods 2024; 13:1834. [PMID: 38928777 PMCID: PMC11202995 DOI: 10.3390/foods13121834] [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: 05/10/2024] [Revised: 06/07/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Chicken egg white (EW) proteins possess various useful techno-functionalities, including foaming, gelling or coagulating, and emulsifying. The gelling property is one of the most important functionalities of EW proteins, affecting their versatile applications in the food and pharmaceutical industries. However, it is challenging to develop high-quality gelled foods and innovative nutraceutical supplements using native EW and its proteins. This review describes the gelling properties of EW proteins. It discusses the development and action mechanism of the physical, chemical, and biological methods and exogenous substances used in the modification of EW gels. Two main applications of EW gels, i.e., gelling agents in foods and gel-type carriers for nutraceutical delivery, are systematically summarized and discussed. In addition, the research and technological gaps between modified EW gels and their applications are highlighted. By reviewing the new modification strategies and application trends of EW gels, this paper provides insights into the development of EW gel-derived products with new and functional features.
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Affiliation(s)
- Junhua Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Xuechun Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Cuihua Chang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Luping Gu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yujie Su
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yanjun Yang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Dominic Agyei
- Department of Food Science, University of Otago, Dunedin 9054, New Zealand
| | - Qi Han
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia
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Wang J, Liu R, Huang X, Bao Y, Wang X, Yi H, Lu Y. The Effect of Nanoscale Modification of Nisin by Different Milk-Derived Proteins on Its Physicochemical Properties and Antibacterial Activity. Foods 2024; 13:1606. [PMID: 38890836 PMCID: PMC11171616 DOI: 10.3390/foods13111606] [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: 04/16/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 06/20/2024] Open
Abstract
Nisin is used as a natural food preservative because of its broad-spectrum antimicrobial activity against Gram-positive bacteria. However, free nisin is susceptible to various factors that reduce its antimicrobial activity. Milk protein, a protein derived from milk, has self-assembly properties and is a good carrier of bioactive substances. In this study, lactoferrin-nisin nanoparticles (L-N), bovine serum albumin-nisin nanoparticles (B-N), and casein-nisin nanoparticles (C-N) were successfully prepared by a self-assembly technique, and then their properties were investigated. The studies revealed that lactoferrin (LF) and nisin formed L-N mainly through hydrophobic interactions and hydrogen bonding, and L-N had the best performance. The small particle size (29.83 ± 2.42 nm), dense reticular structure, and good thermal stability, storage stability, and emulsification of L-N laid a certain foundation for its application in food. Further bacteriostatic studies showed that L-N enhanced the bacteriostatic activity of nisin, with prominent inhibitory properties against Listeria monocytogenes, Staphylococcus aureus, and Bacillus cereus, which mainly disrupted the cell membrane of the bacteria. The above results broaden our understanding of milk protein-nisin nanoparticles, while the excellent antibacterial activity of L-N makes it promising for application as a novel food preservative, which will help to improve the bioavailability of nisin in food systems.
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Affiliation(s)
- Jing Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (R.L.); (X.H.); (Y.B.); (X.W.)
| | - Rui Liu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (R.L.); (X.H.); (Y.B.); (X.W.)
| | - Xiaoyang Huang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (R.L.); (X.H.); (Y.B.); (X.W.)
| | - Yuexin Bao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (R.L.); (X.H.); (Y.B.); (X.W.)
| | - Xiaohong Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (R.L.); (X.H.); (Y.B.); (X.W.)
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Huaxi Yi
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China;
| | - Youyou Lu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (J.W.); (R.L.); (X.H.); (Y.B.); (X.W.)
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
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Ud Din J, Li H, Li Y, Liu X, Al-Dalali S. Conjugation of Soybean Proteins 7S/11S Isolate with Glucose/Fructose in Gels through Wet-Heating Maillard Reaction. Gels 2024; 10:237. [PMID: 38667656 PMCID: PMC11049473 DOI: 10.3390/gels10040237] [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: 02/08/2024] [Revised: 03/20/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
Conjugation with glucose (G) and fructose (F) via the Maillard reaction under the wet-heating condition is a natural and non-toxic method of improving the technological functions of 7S/11S proteins in different kinds of gels. It may be used as an affordable supply of emulsifiers and an excellent encapsulating matrix for gels. This study aimed to create a glucose/fructose-conjugated 7S/11S soy protein via the Maillard reaction. The conjugation was confirmed by determining the SDS-PAGE profile and circular dichroism spectra. In addition, these conjugates were comprehensively characterized in terms of grafting degree, browning degree, sulfhydryl content, surface hydrophobicity (H0), and differential scanning calorimetry (DSC) through various reaction times (0, 24, 48, and 72 h) to evaluate their ability to be used in food gels. The functional characteristics of the 7S/11S isolate-G/F conjugate formed at 70 °C, with a high degree of glycosylation and browning, were superior to those obtained at other reaction times. The SDS-PAGE profile indicated that the conjugation between the 7S and 11S proteins and carbohydrate sources of G and F through the Maillard reaction occurred. Secondary structural results revealed that covalent interactions with G and F affected the secondary structural components of 7S/11S proteins, leading to increased random coils. When exposed to moist heating conditions, G and F have significant potential for protein alteration through the Maillard reaction. The results of this study may provide new insights into protein modification and establish the theoretical basis for the therapeutic application of both G and F conjugation with soy proteins in different food matrixes and gels.
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Affiliation(s)
- Jalal Ud Din
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China
| | - He Li
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China
- National Soybean Processing Industry Technology Innovation Center, Beijing 100048, China
| | - You Li
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China
| | - Xinqi Liu
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China
- National Soybean Processing Industry Technology Innovation Center, Beijing 100048, China
| | - Sam Al-Dalali
- Department of Food Science and Technology, Faculty of Agriculture and Food Science, Ibb University, Ibb 70270, Yemen
- School of Food and Health, Guilin Tourism University, Guilin 541006, China
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4
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Xin Y, Liu Z, Yang C, Dong C, Chen F, Liu K. Smart antimicrobial system based on enzyme-responsive high methoxyl pectin-whey protein isolate nanocomplex for fresh-cut apple preservation. Int J Biol Macromol 2023; 253:127064. [PMID: 37748593 DOI: 10.1016/j.ijbiomac.2023.127064] [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: 06/14/2023] [Revised: 08/23/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
The increase in pectin methylesterase (PME) activity on fresh-cut apple surface can smartly trigger the controlled release of bactericidal agents encapsulated within intelligent responsive Pickering emulsions. In this study, we developed a PME-responsive nanocomplex (W-H-II) to stabilize Pickering emulsion containing thyme essential oil (TEO), preserving fresh-cut apples. W-H-II, formed by heat-induced whey protein isolate (WPI) and high methoxyl pectin (HMP) (pH 4.5, 85 °C, 15 min, WPI:HMP ratio 1:2), exhibited good pH stability due to the stabilizing effects of hydrophobic, hydrogen bonding, and electrostatic interactions. The presence of PME triggered the demethylation of HMP within W-H-II, conferring PME response characteristics. Subsequently, a bacteriostasis experiment with pectinase-producing Bacillus subtilis provided evidence of PME-triggered TEO release from W-H-II-stabilized Pickering emulsion. Furthermore, microscopy techniques were employed to verify the demulsification behavior of the emulsion when PME activity ranged from 0.25 to 2.50 U mL-1. Finally, the PME-responsive TEO Pickering emulsion effectively preserved fresh-cut apples. Stored for 6 days at 5 °C and 10 °C, as the PME activity on the apple surface increased, the decay rate of the coated group was 0 %, with a total colony count below 3.0 log CFU g-1. This study introduces a novel intelligent preservation strategy for storing fresh-cut apples.
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Affiliation(s)
- Ying Xin
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Zhenzhen Liu
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Chenhao Yang
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, PR China
| | - Chen Dong
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, PR China.
| | - Fusheng Chen
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, PR China.
| | - Kunlun Liu
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan 450001, PR China.
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5
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Hu J, Li X, Yu Q, Wang W, Bi J. Understanding the impact of pectin physicochemical variation on browning of simulated Maillard reaction system in thermal and storage processing. Int J Biol Macromol 2023; 240:124347. [PMID: 37028628 DOI: 10.1016/j.ijbiomac.2023.124347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 03/19/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023]
Abstract
Maillard reaction browning is one of the quality deterioration in dried fruit products, but how pectin affects Maillard reaction in the fruit drying and storage process is not clear. This study aimed at investigating the mechanism of pectin variation impact on the browning of Maillard reaction by using simulated system (l-lysine, d-fructose and pectin) in thermal (60 °C and 90 °C for 8 h) and storage (37 °C for 14 days) process. Results showed that apple pectin (AP) and sugar beet pectin (SP) significantly enhanced the browning index (BI) of the Maillard reaction system by 0.01 to 134.51 in the thermal and storage processes, respectively, which were methylation degree of pectin-dependent. The pectin depolymerization product participated Maillard reaction by reacting with l-lysine, and increasing the 5-hydroxymethyl furfural (5-HMF) content (1.25-11.41-fold) and Abs420nm (0.01-0.09). It also produced a new product (m/z 225.1245), which finally increased browning level of the system.
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Affiliation(s)
- Jiaxing Hu
- Institute of Food Science and Technology, CAAS, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100193, China
| | - Xuan Li
- Institute of Food Science and Technology, CAAS, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100193, China.
| | - Qingting Yu
- Institute of Food Science and Technology, CAAS, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100193, China
| | - Wenyue Wang
- Institute of Food Science and Technology, CAAS, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100193, China
| | - Jinfeng Bi
- Institute of Food Science and Technology, CAAS, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100193, China.
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6
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Liu F, McClements DJ, Ma C, Liu X. Novel Colloidal Food Ingredients: Protein Complexes and Conjugates. Annu Rev Food Sci Technol 2023; 14:35-61. [PMID: 36972160 DOI: 10.1146/annurev-food-060721-023522] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Food proteins, polysaccharides, and polyphenols are natural ingredients with different functional attributes. For instance, many proteins are good emulsifiers and gelling agents, many polysaccharides are good thickening and stabilizing agents, and many polyphenols are good antioxidants and antimicrobials. These three kinds of ingredients can be combined into protein, polysaccharide, and/or polyphenol conjugates or complexes using covalent or noncovalent interactions to create novel multifunctional colloidal ingredients with new or improved properties. In this review, the formation, functionality, and potential applications of protein conjugates and complexes are discussed. In particular, the utilization of these colloidal ingredients to stabilize emulsions, control lipid digestion, encapsulate bioactive ingredients, modify textures, and form films is highlighted. Finally, future research needs in this area are briefly proposed. The rational design of protein complexes and conjugates may lead to the development of new functional ingredients that can be used to create more nutritious, sustainable, and healthy foods.
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Affiliation(s)
- Fuguo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, PR China; ,
| | | | - Cuicui Ma
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, PR China; ,
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, PR China; ,
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7
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Tang W, Zhang Q, Ritzoulis C, Walayat N, Ding Y, Liu J. Food protein glycation: A review focusing on stability and in vitro digestive characteristics of oil/water emulsions. Compr Rev Food Sci Food Saf 2023; 22:1986-2016. [PMID: 36939688 DOI: 10.1111/1541-4337.13138] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/21/2023] [Accepted: 02/21/2023] [Indexed: 03/21/2023]
Abstract
Recently, increasing studies have shown that the functional properties of proteins, including emulsifying properties, antioxidant properties, solubility, and thermal stability, can be improved through glycation reaction under controlled reaction conditions. The use of glycated proteins to stabilize hydrophobic active substances and to explore the gastrointestinal fate of the stabilized hydrophobic substances has also become the hot spot. Therefore, in this review, the effects of glycation on the structure and function of food proteins and the physical stability and oxidative stability of protein-stabilized oil/water emulsions were comprehensively summarized and discussed. Also, this review sheds lights on the in vitro digestion characteristics and edible safety of emulsion stabilized by glycated protein. It can further serve as a research basis for understanding the role of structural features in the emulsification and stabilization of glycated proteins, as well as their utilization as emulsifiers in the food industry.
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Affiliation(s)
- Wei Tang
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Qingchun Zhang
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Christos Ritzoulis
- Department of Food Science and Technology, International Hellenic University, Thessaloniki, Greece
| | - Noman Walayat
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Yuting Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Jianhua Liu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, P. R. China
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Teng X, Zhang M, Adhikari B, Liu K. Garlic essential oil emulsions stabilized by microwave dry-heating induced protein-pectin conjugates and their application in controlling nitrite content in prepared vegetable dishes. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Guo Q, Li S, Tang J, Chang S, Qiang L, Du G, Yue T, Yuan Y. Microencapsulation of Lactobacillus plantarum by spray drying: Protective effects during simulated food processing, gastrointestinal conditions, and in kefir. Int J Biol Macromol 2022; 194:539-545. [PMID: 34808148 DOI: 10.1016/j.ijbiomac.2021.11.096] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/08/2021] [Accepted: 11/14/2021] [Indexed: 01/07/2023]
Abstract
Probiotics are incorporated into food products because of numerous favorable effects on human health. The viability of probiotics is often affected by unfavorable interference during processing. The encapsulation can provide protection to probiotics during mechanical processing, storage, and gastrointestinal digestion. This study aimed to evaluate the protective effect of whey protein isolate (WPI) and dextran (DX) conjugates for Lactobacillus plantarum. The WPI-DX conjugate was prepared by Maillard-based glycation and confirmed by gel electrophoresis. Extending the heating time from 1 to 5 h decreased the content of tryptophan residues and increased the amide I and amide II bands. The enhanced protective ability of Maillard reaction products (MRPs) for L. plantarum was observed under conditions of stress (pH, heat, and salt) and in vitro digestion. In situ viability tests showed that encapsulation improved the survival of bacteria in kefir during 15 days of storage at 4 °C. Overall, our results provide valuable information for the development of functional probiotic food products.
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Affiliation(s)
- Qi Guo
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Shidong Li
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Jiaxin Tang
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Shuaidan Chang
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Liyue Qiang
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Gengan Du
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China; College of Food Science and Techonology, Northwest University, Xi'an, 710069, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China.
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Effect of sodium chloride on formation and structure of whey protein isolate/hyaluronic acid complex and its ability to loading curcumin. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127828] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Qi PX, Chau HK, Hotchkiss AT. Molecular characterization of the interacting and reacting systems formed by α-lactalbumin and sugar beet pectin. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Structural characterization of modified whey protein isolates using cold plasma treatment and its applications in emulsion oleogels. Food Chem 2021; 356:129703. [PMID: 33848680 DOI: 10.1016/j.foodchem.2021.129703] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 03/22/2021] [Accepted: 03/23/2021] [Indexed: 11/22/2022]
Abstract
Cold plasma as a green and expeditious tool was used to modify whey protein isolate (WPI) in order to improve its emulsion capability. The emulsion-based oleogels with antibacterial functions were then constructed using the modified WPI. The modified WPI treated with cold plasma under 10 s at 50 W power significantly lowered the oil-water interface tension. Meanwhile, the fluorescence intensity and the α-helix content of WPI reduced with the cold plasma treatment. It is noted that SEM results showed that the treated WPI had more regular dendritic structures. Such modified WPI was applied to construct oleogels loaded with thyme essential oil and coconut oil, which showed a porous uniform network structure and excellent antimicrobial activities against E.coli. As a proof of concept, this study demonstrated cold plasma could be as a new facile tool to modify food-sourced proteins and expected to enlarge their applications in oleogel productions.
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13
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Seo CW, Yoo B. Preparation of milk protein isolate/κ-carrageenan conjugates by maillard reaction in wet-heating system and their application to stabilization of oil-in-water emulsions. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110542] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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14
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Xiao Y, Qi PX, Wickham ED. Chemical composition as an indicator for evaluating heated whey protein isolate (WPI) and sugar beet pectin (SBP) systems to stabilize O/W emulsions. Food Chem 2020; 330:127280. [PMID: 32540520 DOI: 10.1016/j.foodchem.2020.127280] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/15/2020] [Accepted: 06/07/2020] [Indexed: 01/18/2023]
Abstract
We investigated changes in the chemical composition of WPI as a result of heating (60 °C, 72 h) with SBP in solution (pH 6.75). The concentration of WPI was kept at a constant (3%), whereas the level of SBP was varied at 1, 1.5, and 3%. The reaction products were examined using the Ellman's reagent, ninhydrin assay, and gel electrophoresis. The results demonstrated that the losses of the free sulfhydryl (-SH) and primary amine (-NH2) contents in WPI were less severe compared to those occurring in the dry-state at similar conditions (mass ratio, temperature, and reaction duration). The mixtures were used as emulsifiers in an O/W emulsion system at pH 3.20 and 6.75 and showed an improved ability to stabilize the average size of the droplets than WPI alone at acidic pH. The mixtures at higher levels of SBP, ≥ 1.5%, however, adversely affected the emulsion stability at neutral pH.
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Affiliation(s)
- Yingping Xiao
- Dairy and Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Wyndmoor, PA 19038, USA; Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, PR China
| | - Phoebe X Qi
- Dairy and Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Wyndmoor, PA 19038, USA.
| | - Edward D Wickham
- Dairy and Functional Foods Research Unit, Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Wyndmoor, PA 19038, USA
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15
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A'yun Q, Demicheli P, de Neve L, Wu J, Balcaen M, Setiowati AD, Martins JC, van Troys M, Van der Meeren P. Dry heat induced whey protein–lactose conjugates largely improve the heat stability of O/W emulsions. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104736] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Liu Q, Cui H, Muhoza B, Duhoranimana E, Xia S, Hayat K, Hussain S, Tahir MU, Zhang X. Fabrication of low environment-sensitive nanoparticles for cinnamaldehyde encapsulation by heat-induced gelation method. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105789] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Changes in the molecular structure and stability of β-lactoglobulin induced by heating with sugar beet pectin in the dry-state. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Xi C, Kang N, Zhao C, Song H, Liu Y, Zhang T. Effect of reaction temperature on the protein structure and the ability to encapsulate β-carotene of WPI-dextran conjugates. J Food Sci 2020; 85:1707-1716. [PMID: 32449946 DOI: 10.1111/1750-3841.15141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 02/29/2020] [Accepted: 03/26/2020] [Indexed: 11/30/2022]
Abstract
In this paper, we studied the effect of glycosylation reaction on the molecular structure and functional properties of whey protein isolate (WPI), and studied the effect of reaction temperature (50 to 90 °C) on the molecular structure and functional properties of WPI-dextran conjugates (WPI-D). The results of the extent of glycation (EG) and sodium dodecyl sulfate-polyacrylamide gel electrophoresis confirmed the formation of WPI-D. Circular dichroism (CD), Fourier transform infrared spectrum, and fluorescence spectroscopy indicated that the molecular structure of WPI was changed after glycosylation-the β-sheet content was decreased and the tryptophan content was increased. The emulsifying properties and the ability to encapsulate β-carotene of WPI-D were improved compared with WPI (P < 0.05). When the reaction temperature was 70 and 80 °C, the EG and the ability to encapsulate β-carotene of WPI-D were better (P < 0.05), which was related to protein unfolding. However, due to the polymerization between the WPI molecules, the emulsion activity index of WPI-D and the ability to encapsulate β-carotene were lowered at 90 °C (P < 0.05). Therefore, the glycosylation reaction can change the molecular structure and functional properties of WPI; the emulsifying properties and the ability to encapsulate β-carotene of WPI-D can be changed by controlling the reaction temperature of glycosylation. PRACTICAL APPLICATION: The glycosylation reaction can change the molecular structure and functional properties of Whey protein isolate; the emulsifying properties and the ability to encapsulate β-carotene of WPI-dextran conjugates can be changed by controlling the reaction temperature of glycosylation.
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Affiliation(s)
- Chunyu Xi
- College of Food Science and Engineering, Jilin University, Changchun, 130062, P. R. China
| | - Naixin Kang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, P. R. China
| | - Changhui Zhao
- College of Food Science and Engineering, Jilin University, Changchun, 130062, P. R. China
| | - Hongxin Song
- College of Food Science and Engineering, Jilin University, Changchun, 130062, P. R. China
| | - Yujia Liu
- College of Food Science and Engineering, Jilin University, Changchun, 130062, P. R. China
| | - Tiehua Zhang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, P. R. China
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Wang W, Sun Q, Gan N, Zhai Y, Xiang H, Li H. Characterizing the interaction between methyl ferulate and human serum albumin by saturation transfer difference NMR. RSC Adv 2020; 10:32999-33009. [PMID: 35516494 PMCID: PMC9056696 DOI: 10.1039/d0ra05844k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 08/28/2020] [Indexed: 12/28/2022] Open
Abstract
Methyl ferulate (MF) is an alkyl ferulate ester that widely exists in edible plants and has application value in the food and medicine industries. Thus, its effect on biological macromolecules should be considered. In this study, we exploit saturation transfer difference NMR (STD-NMR) to characterize the interaction of all protons of MF with human serum albumin (HSA) at the molecular level. STD-NMR and Ka (1.298 × 103 M−1) revealed that protons H1–6 and H8 bound to HSA with a medium affinity. Binding epitope mapping further showed that the aromatic ring played a key role in the HSA–MF interaction. STD-NMR site-marker-displacement experiments and circular dichroism spectroscopy revealed that MF prefered to bind to site II of HSA without changing the basic skeleton of HSA. Computer simulations confirmed these experimental results. Overall, this work elucidates the molecular level interaction of MF with HSA and provides new insights into the possibility of the potential applications of MF in the food and medicine industries. STD-NMR technique characterized the recognition mechanism of methyl ferulate and human serum albumin qualitatively and quantitatively.![]()
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Affiliation(s)
- Wenjing Wang
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qiaomei Sun
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Na Gan
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yuanming Zhai
- Analytical & Testing Center
- Sichuan University
- Chengdu 610065
- China
| | - Hongzhao Xiang
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hui Li
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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Madadlou A, Floury J, Dupont D. Structural Assessment and Catalytic Oxidation Activity of Hydrophobized Whey Proteins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12025-12033. [PMID: 30394743 DOI: 10.1021/acs.jafc.8b02362] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Chemical modification of whey proteins allows manipulation of their characteristics, such as surface charge and hydrophobicity. Herein, we report the influence of hydrophobization accomplished by a preacetylation stage and a subsequent combined acetylation-heating process on some characteristics of whey proteins. Hydrophobization extensively (≥90%) acetylated the available free amino groups of whey proteins. The produced protein particles were nanoscaled (75 nm) and had a significantly low isoelectric point (3.70). Hydrophobization increased the β-sheet content of whey proteins and significantly decreased the solvent exposure of tyrosine residues. It also conferred a less compact tertiary structure to the proteins and decreased the extent of disulfide-bond formation by heating. The mobility of α-lactalbumin in nonreducing electrophoresis gel increased as a consequence of hydrophobization. Then, the ability of whey proteins to catalyze hydroquinone autoxidation was examined, and it was found that the activity decreased as a result of hydrophobization. The catalytic activity of the proteins was associated with the free-amino-group content, which determined the extent of cation-π attractive interactions; ζ-potential, which determined the extent of anion-π repulsive interactions; and π-stacking between hydrophobic residues and the electron cloud of the quinone ring.
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Affiliation(s)
- Ashkan Madadlou
- STLO, UMR 1253 , INRA, Agrocampus Ouest , 35000 Rennes , France
| | - Juliane Floury
- STLO, UMR 1253 , INRA, Agrocampus Ouest , 35000 Rennes , France
| | - Didier Dupont
- STLO, UMR 1253 , INRA, Agrocampus Ouest , 35000 Rennes , France
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