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Liu X, Zhang Z, Chen Y, Zhong M, Lei Y, Huo J, Ma L, Li S. Chain reactions of temperature-induced egg white protein amorphous aggregates: Formation, structure and material composition of thermal gels. Food Chem 2024; 460:140785. [PMID: 39121770 DOI: 10.1016/j.foodchem.2024.140785] [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: 05/03/2024] [Revised: 08/01/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
Egg white protein is widely used in food, chemical, medical and other fields due to its excellent thermal gel properties. However, the regularity of egg white thermal gel (EWTG) by temperature influence is still unknown. In this study, we investigated the potential mechanism of temperature (75-95 °C, 15 min) gradient changes inducing thermal aggregation and gel formation of EWTG. The results showed that changes in textural characteristics and water holding capacity (WHC) of EWTGs depended on switching in protein aggregation morphology (spherical shape - chain shape - regiment shape) and gel network structure differences ("irregular bead-like" - "regular lamellar structure"). In addition, proteomics indicated that the generation of amorphous protein aggregates at 95 °C might be related to Mucin 5B as the aggregation core. The research revealed the EWTG formation from "whole egg white protein" to "single molecules", aiming to provide a reference for quality control in gel food processing.
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Affiliation(s)
- Xin Liu
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Ziwei Zhang
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Yujie Chen
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Mengzhen Zhong
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Yuqing Lei
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Jiaying Huo
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Lulu Ma
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Shugang Li
- Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province/ Engineering Research Center of Bio-process, Ministry of Education/ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China.
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Beitia E, Mavros G, Guo X, Middendorf D, Juadjur A, Heinz V, Valdramidis V, Aganovic K. Manothermosonication - A potential alternative to thermal pasteurisation of liquid whole egg: Comparison of physico-chemical attributes. Food Chem 2024; 463:141102. [PMID: 39278147 DOI: 10.1016/j.foodchem.2024.141102] [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: 06/04/2024] [Revised: 08/21/2024] [Accepted: 08/31/2024] [Indexed: 09/17/2024]
Abstract
Liquid egg products are typically exposed to a defined thermal load to achieve the required safety level, under which their functional properties can be adversely affected. In this study, manothermosonication (MTS) (132 μm, 300 kPa) was investigated as alternative preservation for liquid whole egg (LWE) compared to thermal pasteurisation (60 °C, 3.5 min), assessing results against untreated (fresh) LWE in terms of selected physico-chemical properties. Results showed that MTS resulted in improved LWE foaming properties, increasing foam capacity by a 3.2-fold factor compared to thermal treatment. Emulsion stability was also enhanced after MTS, exhibiting smaller droplet size, and a higher elasticity of gels was obtained. Regarding the protein properties, favourable protein changes (protein unfolding) were identified for MTS through direct (asymmetric flow field flow fractionation) and indirect (surface hydrophobicity and sulfhydryl group content) measurements. In addition, an increase in protein solubility of 11.4 % was observed in MTS compared to thermal treatment.
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Affiliation(s)
- Enrique Beitia
- German Institute of Food Technologies (DIL e.V.), Prof.-von-Klitzing-Str. 7, 49610 Quakenbrück, Germany; Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece.
| | - Grigorios Mavros
- Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece.
| | - Xiaoai Guo
- German Institute of Food Technologies (DIL e.V.), Prof.-von-Klitzing-Str. 7, 49610 Quakenbrück, Germany.
| | - Dana Middendorf
- German Institute of Food Technologies (DIL e.V.), Prof.-von-Klitzing-Str. 7, 49610 Quakenbrück, Germany.
| | - Andreas Juadjur
- German Institute of Food Technologies (DIL e.V.), Prof.-von-Klitzing-Str. 7, 49610 Quakenbrück, Germany.
| | - Volker Heinz
- German Institute of Food Technologies (DIL e.V.), Prof.-von-Klitzing-Str. 7, 49610 Quakenbrück, Germany.
| | - Vasilis Valdramidis
- Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece.
| | - Kemal Aganovic
- German Institute of Food Technologies (DIL e.V.), Prof.-von-Klitzing-Str. 7, 49610 Quakenbrück, Germany; Institute of Food Quality and Food Safety, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany.
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3
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Chen L, Niklas KJ, Ding Z, Gielis J, Miao Q, Lian M, Shi P. Scaling Relationships among the Mass of Eggshell, Albumen, and Yolk in Six Precocial Birds. Integr Comp Biol 2024; 64:134-144. [PMID: 38331421 DOI: 10.1093/icb/icae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/24/2024] [Accepted: 02/05/2024] [Indexed: 02/10/2024] Open
Abstract
The proportions in the size of the avian egg albumen, yolk, and shell are crucial for understanding bird survival and reproductive success because their relationships with volume and surface area can affect ecological and life history strategies. Prior studies have focused on the relationship between the albumen and the yolk, but little is known about the scaling relationship between eggshell mass and shape and the mass of the albumen and the yolk. Toward this end, 691 eggs of six precocial species were examined, and their 2-D egg profiles were photographed and digitized. The explicit Preston equation, which assumes bilateral symmetrical geometry, was used to fit the 2-D egg profiles and to calculate surface areas and volumes based on the hypothesis that eggs can be treated as solids of profile revolution. The scaling relationships of eggshell mass (Ms), albumen mass (Ma), and yolk mass (My), as well as the surface area (S), volume (V), and total mass (Mt) were determined. The explicit Preston equation was validated in describing the 2-D egg profiles. The scaling exponents of Ma vs. Ms, My vs. Ms, and My vs. Ma were smaller than unity, indicating that increases in Ma and My fail to keep pace with increases in Ms, and that increases in My fail to keep pace with increases in Ma. Therefore, increases in unit nutrient contents (i.e., the yolk) involve disproportionately larger increases in eggshell mass and disproportionately larger increases in albumen mass. The data also revealed a 2/3-power scaling relationship between S and V for each species, that is, the simple Euclidean geometry is obeyed. These findings help to inform our understanding of avian egg construction and reveal evolutionary interspecific trends in the scaling of egg shape, volume, mass, and mass allocation.
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Affiliation(s)
- Long Chen
- College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Karl J Niklas
- School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Zhenhui Ding
- College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037, China
| | - Johan Gielis
- Department of Biosciences Engineering, University of Antwerp, B-2020 Antwerp, Belgium
| | - Qinyue Miao
- College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Meng Lian
- College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Peijian Shi
- College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China
- Group of Population Ecology for Global Change, Institute of Zoology, Chinese Academy of Sciences, Datun Road of Chaoyang District, Beijing 100101, China
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4
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Venkatram R, García-Cano I, Jiménez-Flores R. Reduction in the antigenicity of beta-lactoglobulin in whole milk powder via supercritical CO 2 treatment. J Dairy Sci 2024; 107:4216-4234. [PMID: 38460870 DOI: 10.3168/jds.2023-24565] [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: 12/18/2023] [Accepted: 02/02/2024] [Indexed: 03/11/2024]
Abstract
Cow milk allergy is a common phenomenon experienced in early childhood (<5 yr of age) with an average occurrence rate of roughly 2.5%. The most prevalent allergen in cow milk is believed to be β-LG. The objective of this study was to evaluate the use of hydrophobic supercritical CO2 (ScCO2) to modify the chemical structure β-LG, thus impairing its recognition by antibodies. Whole milk powder (WMP) was selected because of its closest compositional resemblance to bovine fluid milk and its applications in reconstitution and in the beverage (infant, toddler, and adult), confectionary, bakery, and meat industries. For this study, WMP was treated with food-grade CO2 at temperatures of 50, 63, and 75°C under operating pressures of 100, 150, 200, 250, and 300 bar. Proteins in WMP were examined using SDS-PAGE, western blot, and ELISA. Orbitrap Fusion liquid chromatography-tandem MS (LC-MS/MS) and periodic staining was performed to confirm post-translational modifications in β-LG. Functional properties of WMP before and after treatment were assessed by its solubility index, oil holding capacity, emulsion capacity and stability, zeta potential, particle size, and color analysis. SDS-PAGE of treated samples yielded fuzzy bands (variable mobility of molecules due to different molecular weights results in ill-defined bands) indicative of an increase in molecular weight, presumably due to chemical change in the protein, and demonstrated a maximum of 71.13 ± 0.29% decrease in the band intensity of β-LG under treatment conditions of 75°C/300 bar for 30 min. These changes were small with samples treated with heat only. Lighter, diffused bands were observed using western blot analysis. The ELISA tests proved that ScCO2 treatment specifically and significantly affected the antigenicity of β-LG with a reduction of 42.9 ± 2.83% and 54.75 ± 2.43% at 63°C/200 bar and 75°C/300 bar, respectively. Orbitrap fusion detected the presence of fatty acids and sugar moieties bound to β-LG and the latter was confirmed by periodic staining. Functional properties of ScCO2-treated milk powder yielded a decrease in solubility index and an increase in emulsion capacity of WMP was observed under ScCO2 treatment at 75°C/300 bar, with small and insignificant changes at other treatments producing a decrease in antigenicity. Color changes were small for most samples, except at 63°C/200 bar, where a significant increase in yellowness was observed. Zeta potential and particle size measurements indicated that most changes were temperature driven. This study demonstrates 2 approaches to mitigate β-LG antigenicity via fatty acid binding and lactosylation using hydrophobic ScCO2.
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Affiliation(s)
- Rahul Venkatram
- Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210
| | - Israel García-Cano
- Department of Food Science and Technology, National Institute of Medical Sciences and Nutrition, Mexico City, Mexico 14080
| | - Rafael Jiménez-Flores
- Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210.
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Tan J, Deng C, Yao Y, Wu N, Xu M, Chen S, Yin Z, Zhao Y, Tu Y. Regulation of different copper salts on alkali-induced egg white gels: Physicochemical characteristics, microstructure and protein conformation. Food Chem 2024; 435:137346. [PMID: 37783128 DOI: 10.1016/j.foodchem.2023.137346] [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: 10/24/2022] [Revised: 07/22/2023] [Accepted: 08/28/2023] [Indexed: 10/04/2023]
Abstract
The effects of different copper salts (CuSO4, CuCl2, Cu(CH3COO)2) on the physicochemical characteristics, microstructure and protein conformation of alkali-induced egg white (EW) gels were investigated. With increasing concentration, three copper salts promoted the aggregation of EW proteins while decreasing the β-sheet content. The three-dimensional gel network was promoted to form, and the water-holding capacity (WHC), texture and solubility of gels were improved by three copper salts at low concentrations. While at high concentrations, the gel deteriorated. The main forces maintaining the alkali-induced EW gels added with copper salts were mainly ionic and disulfide bonds. And the protein component was not affected by ion concentration. Due to the difference in charge density, the three anions had different effects on the stability of proteins, and finally showed different gel characteristics (gel strength, WHC, solubility): CuSO4 > CuCl2 > Cu(CH3COO)2. Therefore, copper salts (especially CuSO4) can be used to improve EW protein aggregation.
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Affiliation(s)
- Ji'en Tan
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China
| | - Chunyang Deng
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yao Yao
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China
| | - Na Wu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China
| | - Mingsheng Xu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China
| | - Shuping Chen
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China
| | - Zhongping Yin
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yan Zhao
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Yonggang Tu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China; Agricultural Products Processing and Quality Control Engineering Laboratory of Jiangxi, Jiangxi Agricultural University, Nanchang 330045, China.
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6
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Akarca G, Avci AK. The effect of solution plasma treatment on the microbial safety and quality characteristics of albumen. Food Sci Nutr 2024; 12:921-932. [PMID: 38370050 PMCID: PMC10867459 DOI: 10.1002/fsn3.3807] [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: 06/28/2023] [Revised: 10/18/2023] [Accepted: 10/21/2023] [Indexed: 02/20/2024] Open
Abstract
The aim of this study was to make eggs microbially safe and increase their durability without damaging the functional properties of the albumen and preserving the solubility of its proteins as much as possible by the solution plasma technique. The pH, Brix, density, and viscosity values of samples decreased during treatment (p < .05 except pH). Although the L* and a* values of both the albumen and egg foam decreased, the b*, hue angle, and chroma values of both increased during treatment. The L* and a* values of the albumen decreased by 7.01 and 1.89 units, and the values of the egg foam decreased by 10.93 and 1.03 units, respectively. At the end of the treatment, foaming capacity and foam stability were decreased by 25% and 21.42%, respectively. Foaming capacity values obtained as a result of this treatment were higher and foam stability values were lower compared to the values obtained in pasteurization of eggs by heat treatment. The count of the two pathogenic bacteria inoculated into the albumen decreased during the treatment (p < .05), the count of Salmonella Enteritidis decreased to 0, and the count of Staphylococcus aureus decreased by 1.09 log cfu/g at the end of the treatment. Compared to current heat treatments, solution plasma treatment caused significantly less adverse effects on albumen quality characteristics. In particular, the foaming properties of the albumen were much less affected by this method and remained at higher values compared to the values achieved by other methods. The treatment also produced a microbiologically safer product.
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Affiliation(s)
- Gökhan Akarca
- Food Engineering DepartmentAfyon Kocatepe UniversityAfyonkarahisarTurkey
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Kar A, Olenskyj AG, Garcia Guerrero M, Graham R, Bornhorst GM. Interplay of egg white gel pH and intragastric pH: Impact on breakdown kinetics and mass transport processes. Food Res Int 2023; 173:113290. [PMID: 37803603 DOI: 10.1016/j.foodres.2023.113290] [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: 04/18/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 10/08/2023]
Abstract
Egg white gels have been utilized as a model system to study protein breakdown kinetics based on physical and biochemical breakdown processes during in vitro gastric digestion. Additionally, the impact of regulating intragastric pH on the breakdown kinetic processes was investigated. The present study evaluated the impact of gel pH (based on the pH of protein dispersion prepared at pH 3, 5 and 7.5) and intragastric pH regulation (with or without adjustment to pH 2 during in vitro gastric digestion) on the effective diffusion of gastric juice components (water and HCl), gel softening kinetics during gastric digestion, microstructural analysis using micro- computed tomography and protein hydrolysis in the liquid and solid fraction of egg white gel digesta. Egg white gels were subjected to 30 s oral digestion and 15, 30, 60, 120, 180 or 240 min gastric digestion in a static in vitro gastric digestion model, with or without gastric pH adjustment to pH 2. The gel pH affected all the properties measured during gastric digestion and each gel pH represented a specific driving mechanism for protein breakdown. A lower gel pH (pH 3) demonstrated a higher diffusion of moisture and acid, resulting in faster softening (p < 0.05). An intermediate pH (pH 5) showed greater protein-protein interactions due to the proximity to the isoelectric point of egg white proteins, resulting in very slow softening during digestion (p < 0.05), and a higher pH (pH 7) resulted in higher acid diffusion, intermediate gel hardness and very slow softening kinetics (p < 0.05). The gastric pH adjustment during digestion of egg protein gels affected (p < 0.05) the equilibrium moisture and acid contents as well as protein hydrolysis. The study confirmed that there is an interplay between initial gel pH and the intragastric pH which affected the breakdown kinetics of egg white gels during the gastric digestion process.
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Affiliation(s)
| | | | | | | | - Gail M Bornhorst
- University of California, Davis, USA; Riddet Institute, Palmerston North, New Zealand.
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Sarantidi E, Ainatzoglou A, Papadimitriou C, Stamoula E, Maghiorou K, Miflidi A, Trichopoulou A, Mountzouris KC, Anagnostopoulos AK. Egg White and Yolk Protein Atlas: New Protein Insights of a Global Landmark Food. Foods 2023; 12:3470. [PMID: 37761179 PMCID: PMC10528800 DOI: 10.3390/foods12183470] [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: 07/29/2023] [Revised: 08/30/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
(1) Background: The chicken egg is an animal product of great agronomic interest. The egg white and yolk constitute high-quality protein sources for humans with high digestibility and well-balanced amino acid profiles. Despite the egg white and yolk protein's undisputed value, research to unravel their full proteome content and its properties is still ongoing. We aimed to exhaustively analyze the proteome of egg white and yolk by applying intrinsic proteomics and bioinformatics approaches in order to unravel the full protein potential of this landmark food. (2) Methods: A total of 45 freshly laid, unfertilized, chicken eggs were subjected to nanoLC-MS/MS Orbitrap analysis following a peptide pre-fractionation step. A comprehensive bioinformatics processing step was undertaken towards elucidating potential activities and roles of identified molecules. In parallel, the literature was mined concerning all reported egg white and yolk protein identifications. (3) Results: Our analysis revealed 371 and 428 new proteins, reported for the first time to be present in the egg white and yolk, respectively. From the bioactivity standpoint, egg white and yolk proteins showed high enrichment for antioxidant and anti-inflammatory processes, while exerting high relevance for the apoptosis and focal adhesion pathways. (4) Conclusions: Egg white and yolk proteins exert diverse and multifaceted properties. A total of 799 proteins were reported for the first time as being part of the egg and yolk. Our novel protein data enriched those already published in the literature and the first ever chicken egg white and yolk Protein Atlas, comprising 1392 protein entries, was generated. This dataset will provide a cornerstone reference for future studies involving egg proteins.
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Affiliation(s)
- Eleana Sarantidi
- Department of Biotechnology, Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
- Laboratory of Nutritional Physiology and Feeding, Department of Animal Science, School of Animal Biosciences, Agricultural University of Athens, 11855 Athens, Greece
| | - Alexandra Ainatzoglou
- Department of Biotechnology, Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Christine Papadimitriou
- Department of Biotechnology, Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Eleni Stamoula
- Department of Biotechnology, Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Katerina Maghiorou
- Department of Biotechnology, Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Argyro Miflidi
- Department of Biotechnology, Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Antonia Trichopoulou
- Laboratory of Nutritional Physiology and Feeding, Department of Animal Science, School of Animal Biosciences, Agricultural University of Athens, 11855 Athens, Greece
| | | | - Athanasios K. Anagnostopoulos
- Department of Biotechnology, Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
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Moreira CA, Zotarelli MF, de Lima M. Characterization of quail egg powders obtained by liquid egg drying and foam-mat drying. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1810-1820. [PMID: 36564868 DOI: 10.1002/jsfa.12406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 12/09/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Quail eggs have nutritional, therapeutic, and functional potential but are still not widely consumed globally. Their availability in powder form can contribute to expanding their consumption worldwide. However, drying can significantly affect their properties. To the best of our knowledge, there is no study comparing the effect of drying methods on the rehydration capacity and functional properties of whole quail egg powder. In this context, this work aimed to obtain powdered quail eggs by convective oven drying and freeze drying of eggs in liquid and foam form, to evaluate the effect of each drying method on their physical, rehydration, and functional characteristics. RESULTS The powder obtained by freeze-drying eggs in the liquid form (L-FD) showed the most desirable foaming capabilities; however, it produced less stable emulsions. The powder obtained by convective oven drying of eggs in liquid form (L-CONV) had the worst rehydration and foaming capabilities but produced firmer gels and had good emulsifying capacity. Finally, the powders obtained by foam-mat drying yielded very stable foams and emulsions. CONCLUSION The methods for quail egg powder production that were evaluated performed well. The results point to the strong potential of quail egg powder as an ingredient. Liquid freeze-dried (L-FD) eggs stood out for their rehydration capacity. Each powder had different functional properties, so the choice of the best method depends on the intended application of the powder as specific characteristics and functional properties are suitable for preparing each food. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Camila Alves Moreira
- Faculty of Chemical Engineering, Federal University of Uberlândia, Patos de Minas, Brazil
| | | | - Marieli de Lima
- Faculty of Chemical Engineering, Federal University of Uberlândia, Patos de Minas, Brazil
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10
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Zhang RY, Wang Y, Jiang Y, Min EH, Rao SQ. Effects of dual succinylation and ultrasonication modification on the structural and functional properties of ovalbumin. Food Res Int 2023; 165:112511. [PMID: 36869511 DOI: 10.1016/j.foodres.2023.112511] [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] [Received: 08/11/2022] [Revised: 01/10/2023] [Accepted: 01/21/2023] [Indexed: 01/31/2023]
Abstract
In this study, the functional properties of ovalbumin (OVA) were improved through dual modification with succinylation (succinylation degrees of 32.1 % [S1], 74.2 % [S2], and 95.2 % [S3]) and ultrasonication (ultrasonication durations of 5 min [U1], 15 min [U2], and 25 min [U3]), and the changes in protein structures were explored. Results showed that as the succinylation degree was increased, the particle size and surface hydrophobicity of S-OVA decreased by the maximum values of 2.2 and 2.4 times, respectively, causing emulsibility and emulsifying stability to increase by 2.7 and 7.3 times, respectively. After ultrasonic treatment, the particle size of succinylated-ultrasonicated OVA (SU-OVA) had decreased by 3.0-5.1 times relative to that of S-OVA. Moreover, the net negative charge of S3U3-OVA had increased to the maximum value of - 35.6 mV. These changes contributed to the further enhancement in functional indicators. The unfolding of the protein structure and the conformational flexibility of SU-OVA were illustrated and compared with those of S-OVA via protein electrophoresis, circular dichroism spectroscopy, intrinsic fluorescence spectroscopy, and scanning electron microscopy. The dually modified OVA emulsion (S3U3-E) presented small droplets (243.33 nm), reduced viscosity, and weakened gelation behavior that were indicative of even distribution, which was visually proven by confocal laser scanning microscopy images. Furthermore, S3U3-E exhibited favorable stability, a particle size that was almost unchanged, and a low polydispersity index (<0.1) over 21 days of storage at 4 °C. The above results demonstrated that succinylation combined with ultrasonic treatment could be an effective dual modification method for enhancing the functional performance of OVA.
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Affiliation(s)
- Ru-Yi Zhang
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China
| | - Yang Wang
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China
| | - Yi Jiang
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China
| | - Er-Hu Min
- Jiangsu Vocational College of Tourism, Yangzhou 225127, Jiangsu, China
| | - Sheng-Qi Rao
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China; Jiangsu Key Laboratory of Dairy Biotechnology and Safety Control, Yangzhou University, Yangzhou 225127, Jiangsu, China.
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11
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Janssen F, Monterde V, Wouters AGB. Relevance of the air-water interfacial and foaming properties of (modified) wheat proteins for food systems. Compr Rev Food Sci Food Saf 2023; 22:1517-1554. [PMID: 36815740 DOI: 10.1111/1541-4337.13120] [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: 08/01/2022] [Revised: 12/16/2022] [Accepted: 01/20/2023] [Indexed: 02/24/2023]
Abstract
A shift from animal protein- to plant protein-based foods is crucial in transitioning toward a more sustainable global food system. Among food products typically stabilized by animal proteins, food foams represent a major category. Wheat proteins are ubiquitous and structurally diverse, which offers opportunities for exploiting them for food foam and air-water interface stabilization. Notably, they are often classified into those that are soluble in aqueous systems (albumins and globulins) and those that are not (gliadins and glutenins). However, gliadins are at least to an extent water extractable and thus surface active. We here provide a comprehensive overview of studies investigating the air-water interfacial and foaming properties of the different wheat protein fractions. Characteristics in model systems are related to the functional role that wheat proteins play in gas cell stabilization in existing wheat-based foods (bread dough, cake batter, and beer foam). Still, to further extend the applicability of wheat proteins, and particularly the poorly soluble glutenins, to other food foams, their modification is required. Different physical, (bio)chemical, and other modification strategies that have been utilized to alter the solubility and therefore the air-water interfacial and foaming properties of the gluten protein fraction are critically reviewed. Such approaches may open up new opportunities for the application of (modified) gluten proteins in other food products, such as plant-based meringues, whippable drinks, or ice cream. In each section, important knowledge gaps are highlighted and perspectives for research efforts that could lead to the rational design of wheat protein systems with enhanced functionality and overall an increased applicability in food industry are proposed.
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Affiliation(s)
- Frederik Janssen
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - Viena Monterde
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - Arno G B Wouters
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
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12
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Begam N, Timmermann S, Ragulskaya A, Girelli A, Senft MD, Retzbach S, Anthuparambil ND, Akhundzadeh MS, Kowalski M, Reiser M, Westermeier F, Sprung M, Zhang F, Gutt C, Schreiber F. Effects of temperature and ionic strength on the microscopic structure and dynamics of egg white gels. J Chem Phys 2023; 158:074903. [PMID: 36813727 DOI: 10.1063/5.0130758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We investigate the thermal gelation of egg white proteins at different temperatures with varying salt concentrations using x-ray photon correlation spectroscopy in the geometry of ultra-small angle x-ray scattering. Temperature-dependent structural investigation suggests a faster network formation with increasing temperature, and the gel adopts a more compact network, which is inconsistent with the conventional understanding of thermal aggregation. The resulting gel network shows a fractal dimension δ, ranging from 1.5 to 2.2. The values of δ display a non-monotonic behavior with increasing amount of salt. The corresponding dynamics in the q range of 0.002-0.1 nm-1 is observable after major change of the gel structure. The extracted relaxation time exhibits a two-step power law growth in dynamics as a function of waiting time. In the first regime, the dynamics is associated with structural growth, whereas the second regime is associated with the aging of the gel, which is directly linked with its compactness, as quantified by the fractal dimension. The gel dynamics is characterized by a compressed exponential relaxation with a ballistic-type of motion. The addition of salt gradually makes the early stage dynamics faster. Both gelation kinetics and microscopic dynamics show that the activation energy barrier in the system systematically decreases with increasing salt concentration.
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Affiliation(s)
- Nafisa Begam
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | | | | | - Anita Girelli
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | - Maximilian D Senft
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | - Sebastian Retzbach
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | | | | | - Marvin Kowalski
- Department Physik, Universität Siegen, 57072 Siegen, Germany
| | - Mario Reiser
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Fabian Westermeier
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Michael Sprung
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Fajun Zhang
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | - Christian Gutt
- Department Physik, Universität Siegen, 57072 Siegen, Germany
| | - Frank Schreiber
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
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13
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Fabrication, characterization, and application of catechin-dextran-egg white protein conjugates: Novel antioxidant emulsifiers. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2022.114268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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14
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Xia M, Zhao Q, Isobe K, Handa A, Cai Z, Huang X. Lysozyme impacts gel properties of egg white protein via electrostatic interactions, polarity differences, local pH regulation, or as a filler. Int J Biol Macromol 2022; 223:1727-1736. [PMID: 36252621 DOI: 10.1016/j.ijbiomac.2022.10.101] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/26/2022] [Accepted: 10/11/2022] [Indexed: 11/05/2022]
Abstract
The effects of lysozyme on egg white gel properties and their underlying causes were investigated under comparison between lysozyme removed with ion exchange resin and three levels of commercial lysozyme powder (1/2, 2/2, 3/2 the natural concentration in egg white) re-added in the lysozyme-removed system. Results showed that a lysozyme-removed gel obtained the best water holding capacity (61.61 %), lowest cooking loss (11.85 %), and enhanced textural properties (hardness, 638.04 g; resilience, 0.57; and gumminess), which was attributed to lysozyme promoting protein aggregation and weakening electrostatic repulsion by charge neutralization and competition for water, and this could be eliminated by removing lysozyme. Besides, the stronger intermolecular interactions (enhanced ionic bonds, hydrogen bonds and inhibited hydrophobic interactions), the shorter transverse relaxation time (T21 and T22), as well as more uniform microstructure formed in the lysozyme-removed gel, allowing the gels to bind more water molecules. With return of lysozyme, the gel properties were weakened to varying degrees, which was also ascribed to the filling of lysozyme in gel matrix narrowed interspace for binding and storage of water. In sum, adjustment on the content of lysozyme can regulate the gel properties of egg white, so as to obtain gels with regulable gel quality and processing characteristics.
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Affiliation(s)
- Minquan Xia
- College of Food Science and Technology, Huazhong Agricultural University, National Research and Development Centre for Egg Processing, Wuhan, Hubei 430070, PR China.
| | - Qiannan Zhao
- College of Food Science and Technology, Huazhong Agricultural University, National Research and Development Centre for Egg Processing, Wuhan, Hubei 430070, PR China
| | | | - Akihiro Handa
- Division of Life Science, School of Science and Engineering, Tokyo Denki University, Saitama, Japan
| | - Zhaoxia Cai
- College of Food Science and Technology, Huazhong Agricultural University, National Research and Development Centre for Egg Processing, Wuhan, Hubei 430070, PR China
| | - Xi Huang
- College of Food Science and Technology, Huazhong Agricultural University, National Research and Development Centre for Egg Processing, Wuhan, Hubei 430070, PR China.
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15
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Fuchs CJ, Hermans WJ, Smeets JS, Senden JM, van Kranenburg J, Gorissen SH, Burd NA, Verdijk LB, van Loon LJ. Raw Eggs To Support Postexercise Recovery in Healthy Young Men: Did Rocky Get It Right or Wrong? J Nutr 2022; 152:2376-2386. [PMID: 36774104 PMCID: PMC9644172 DOI: 10.1093/jn/nxac174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/06/2022] [Accepted: 08/03/2022] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Egg protein is ingested during recovery from exercise to facilitate the postexercise increase in muscle protein synthesis rates and, as such, to support the skeletal muscle adaptive response to exercise training. The impact of cooking egg protein on postexercise muscle protein synthesis is unknown. OBJECTIVES We sought to compare the impact of ingesting unboiled (raw) compared with boiled eggs during postexercise recovery on postprandial myofibrillar protein synthesis rates. METHODS In a parallel design, 45 healthy, resistance-trained young men (age: 24 y; 95% CI: 23, 25 y) were randomly assigned to ingest 5 raw eggs (∼30 g protein), 5 boiled eggs (∼30 g protein), or a control breakfast (∼5 g protein) during recovery from a single session of whole-body resistance-type exercise. Primed continuous l-[ring-13C6]-phenylalanine infusions were applied, with frequent blood sampling. Muscle biopsies were collected immediately after cessation of resistance exercise and at 2 and 5 h into the postexercise recovery period. Primary (myofibrillar protein synthesis rates) and secondary (plasma amino acid concentrations) outcomes were analyzed using repeated-measures (time × group) ANOVA. RESULTS Ingestion of eggs significantly increased plasma essential amino acid (EAA) concentrations, with 20% higher peak concentrations following ingestion of boiled compared with raw eggs (time × group: P < 0.001). Myofibrillar protein synthesis rates were significantly increased during the postexercise period when compared with basal, postabsorptive values in all groups (2-4-fold increase: P < 0.001). Postprandial myofibrillar protein synthesis rates were 20% higher after ingesting raw eggs [0.067%/h; 95% CI: 0.056, 0.077%/h; effect size (Cohen d): 0.63], and 18% higher after ingesting boiled eggs (0.065%/h; 95% CI: 0.058, 0.073%/h; effect size: 0.69) when compared with the control breakfast (0.056%/h; 95% CI: 0.048, 0.063%/h), with no significant differences between groups (time × group: P = 0.077). CONCLUSIONS The ingestion of raw, as opposed to boiled, eggs attenuates the postprandial rise in circulating EAA concentrations. However, postexercise muscle protein synthesis rates do not differ after ingestion of 5 raw compared with 5 boiled eggs in healthy young men. This trial was registered at the Nederlands Trial Register as NL6506 (www.trialregister.nl).
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Affiliation(s)
- Cas J Fuchs
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Wesley Jh Hermans
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Joey Sj Smeets
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Joan M Senden
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Janneau van Kranenburg
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Stefan Hm Gorissen
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Nicholas A Burd
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Lex B Verdijk
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Luc Jc van Loon
- Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands.
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16
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Functional Properties and Extraction Techniques of Chicken Egg White Proteins. Foods 2022; 11:foods11162434. [PMID: 36010434 PMCID: PMC9407204 DOI: 10.3390/foods11162434] [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: 07/05/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 11/17/2022] Open
Abstract
Chicken egg whites contain hundreds of proteins, and are widely used in the food, biological and pharmaceutical industries. It is highly significant to study the separation and purification of egg white proteins. This review first describes the structures and functional properties of several major active proteins in egg whites, including ovalbumin, ovotransferrin, ovomucoid, lysozyme, ovomucin, ovomacroglobulin and avidin. Then, the common techniques (including precipitation, chromatography and membrane separation) and some novel approaches (including electrophoresis, membrane chromatography, aqueous two-phase system and molecular imprinting technology) for the separation and purification of egg white proteins broadly reported in the current research are introduced. In addition, several co-purification methods for simultaneous separation of multiple proteins from egg whites have been developed to improve raw material utilization and reduce costs. In this paper, the reported techniques in the last decade for the separation and purification of chicken egg white proteins are reviewed, discussed and prospected, aiming to provide a reference for further research on egg proteins in the future.
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17
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Ghani A, Tabibiazar M, Mahmoudzadeh M, Golchinfar Z, Homayouni Rad A. Evaluation of the effect of sage seed gum (
Salvia macrosiphon
) conjugation on physicochemical and antimicrobial properties of egg white protein. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.16018] [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]
Affiliation(s)
- Ali Ghani
- Student Research Committee Tabriz University of Medical Science Tabriz Iran
- Faculty of Nutrition and Food Science Tabriz University of Medical Science Tabriz Iran
| | - Mahnaz Tabibiazar
- Faculty of Nutrition and Food Science Tabriz University of Medical Science Tabriz Iran
| | - Maryam Mahmoudzadeh
- Faculty of Nutrition and Food Science Tabriz University of Medical Science Tabriz Iran
- Drug Applied Research Center Tabriz University of Medical Sciences Tabriz Iran
| | - Zahra Golchinfar
- Student Research Committee Tabriz University of Medical Science Tabriz Iran
- Faculty of Nutrition and Food Science Tabriz University of Medical Science Tabriz Iran
| | - Aziz Homayouni Rad
- Faculty of Nutrition and Food Science Tabriz University of Medical Science Tabriz Iran
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18
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Ye Y, Li A, Feng T, Yuan X, Xiao X, Wang Y. Preparation and characterization of an alkali‐pickled preserved egg white heat‐induced gel. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Yang Ye
- School of Biological Engineering Sichuan University of Science and Engineering Yibin China
| | - Anjiao Li
- School of Biological Engineering Sichuan University of Science and Engineering Yibin China
| | - Tingting Feng
- School of Biological Engineering Sichuan University of Science and Engineering Yibin China
| | - Xianling Yuan
- School of Biological Engineering Sichuan University of Science and Engineering Yibin China
| | - Xia Xiao
- School of Biological Engineering Sichuan University of Science and Engineering Yibin China
| | - Yang Wang
- School of Biological Engineering Sichuan University of Science and Engineering Yibin China
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19
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Wen C, He X, Zhang J, Liu G, Xu X. A review on selenium-enriched proteins: preparation, purification, identification, bioavailability, bioactivities and application. Food Funct 2022; 13:5498-5514. [PMID: 35476089 DOI: 10.1039/d1fo03386g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selenium (Se) deficiency can cause many diseases and thereby affect human health. Traditional inorganic Se supplements have disadvantages of toxicity and low bioavailability. Se-Enriched proteins exhibit good bio-accessibility and high biological activities. This review provides a comprehensive overview of the preparation, purification, identification, bioavailability, bioactivities and application of Se-enriched proteins. The method of extracting Se-enriched proteins from animals, microorganisms and plants mainly includes solvent extraction (water, salt, ethanol and alkali solution extraction) and novel extraction technologies (ultrasound-assisted and pulsed electric field assisted extraction). Se-Enriched proteins and their hydrolysates exhibit good bioactivities, mainly including antioxidant activity, immune regulation, neuroprotective activity, and inhibition of hyperglycemic activity, among others. Future research should focus on the relationship between Se-enriched protein metabolism and the selenium regulatory protein metabolic pathway by using multi-omics technology. In addition, it is necessary to comprehensively study the structure-activity relationship of Se-enriched proteins/hydrolysates from different sources, to further clarify their bioactive mechanism and to verify their health benefits in vivo.
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Affiliation(s)
- Chaoting Wen
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China.
| | - Xudong He
- Yangzhou Center for Food and Drug Control, Yangzhou 225127, China
| | - Jixian Zhang
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China. .,Key Laboratory of Oilseeds Processing, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Guoyan Liu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China.
| | - Xin Xu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China.
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20
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Wu Y, Zhang Y, Duan W, Wang Q, An F, Luo P, Huang Q. Ball-milling is an effective pretreatment of glycosylation modified the foaming and gel properties of egg white protein. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2021.110908] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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21
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Zhou X, Chen Z, Nojima T. Pigeon egg white protein-based transparent durable hydrogel via monodisperse ionic surfactant-mediated protein condensation. Sci Rep 2022; 12:4633. [PMID: 35301357 PMCID: PMC8930986 DOI: 10.1038/s41598-022-08375-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 03/07/2022] [Indexed: 11/09/2022] Open
Abstract
The thermal gelation property of proteins is useful in creating protein-based materials. The gelation of protein solution often proceeds by the random aggregation of denatured proteins, and the protein-based gels are typically brittle or opaque, or both. Improvement in the mechanical and optical properties of protein-based materials are required for them to be practical and functional. This study investigated pigeon egg white, which is semitransparent in its thermally gelled state, as a protein source for creating hydrogel materials. The protein thermal gelation process was initiated from the orderly condensed state of proteins complexed with monodisperse ionic surfactants to suppress random aggregation. The resultant gel showed transparency in the visible light region and was not destroyed at 99% compression under 17.8 MPa compressive stress, 350-fold higher than the compressive fracture strength of typical boiled pigeon egg white. These results showed that durable transparent hydrogels could be fabricated by the rational combination of natural proteins and surfactants.
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Affiliation(s)
- Xinlian Zhou
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zaozao Chen
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Tatsuya Nojima
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
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22
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Xue H, Zhang G, Han T, Li R, Liu H, Gao B, Tu Y, Zhao Y. Improvement of gel properties and digestibility of the water-soluble polymer of tea polyphenol-egg white under thermal treatment. Food Chem 2022; 372:131319. [PMID: 34818739 DOI: 10.1016/j.foodchem.2021.131319] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/21/2021] [Accepted: 10/02/2021] [Indexed: 01/12/2023]
Abstract
In this study, the improvement of gel properties and digestibility of the water-soluble polymer of tea polyphenol (TP)-egg white protein (TEP) under heat induction (HTEP), was studied. Results indicated that the particle size and turbidity of TEP increased with TP concentration, and the absolute value of ζ-potential decreased. After heat induction, the surface hydrophobicity of HTEP decreased with TP concentration, and the degree of protein aggregation increased. Microstructure and T2 showed that the gel structure became compact and stable, and HTEP had a strong water-binding ability. The ionic and disulfide bonds were the main chemical bonds in HTEP. The hardness and disulfide bond increased, but the digestion of HTEP increased initially and then decreased (caused by the change of gel structure). Infrared spectroscopy indicated the mutual conversion of intermolecular and intramolecular β-sheets. In short, TP could modify egg white gel through forming stable disulfide bonds and dense gel network structures.
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Affiliation(s)
- Hui Xue
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Tianfeng Han
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Ruiling Li
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Huilan Liu
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Binghong Gao
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Yonggang Tu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yan Zhao
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China.
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23
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Lv X, Huang X, Ma B, Chen Y, Batool Z, Fu X, Jin Y. Modification methods and applications of egg protein gel properties: A review. Compr Rev Food Sci Food Saf 2022; 21:2233-2252. [PMID: 35293118 DOI: 10.1111/1541-4337.12907] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 11/24/2021] [Accepted: 12/22/2021] [Indexed: 01/11/2023]
Abstract
Egg protein (EP) has a variety of functional properties, such as gelling, foaming, and emulsifying. The gel characteristics provide a foundation for applications in the food industry and research on EP. The proteins denature and aggregate to form a dense three-dimensional gel network structure, with a process influenced by protein concentration, pH, ion type, and strength. In addition, the gelation properties of EP can be altered to varying degrees by applying different treatment conditions to EP. Currently, modification methods for proteins include physical modification (heat-induced denaturation, freeze-thaw modification, high-pressure modification, and ultrasonic modification), chemical modification (glycosylation modification, phosphorylation modification, acylation modification, ethanol modification, polyphenol modification), and biological modification (enzyme modification). Pidan, salted eggs, egg tofu, and other egg products have unique sensory properties, due to the gel properties of EP. In accessions, EP has also been used as a new ingredient in food packaging and biopharmaceuticals due to its gel properties. This review will further promote EP gel research and provide guidance for its full application in many fields.
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Affiliation(s)
- Xiaohui Lv
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Xi Huang
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Bin Ma
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Yue Chen
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Zahra Batool
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Xing Fu
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Yongguo Jin
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
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24
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Nhouchi Z, Botosoa EP, Chèné C, Karoui R. Mid infrared as a tool to study the conformational structure of starch and proteins with oil addition during gelatinization. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Inhibition of the liquefaction of alkali-induced egg white gel by sodium ascorbate. Food Chem 2022; 381:132220. [PMID: 35114621 DOI: 10.1016/j.foodchem.2022.132220] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/18/2021] [Accepted: 01/20/2022] [Indexed: 11/21/2022]
Abstract
Effects of sodium ascorbate (1%, 2%, 3%) on the liquefaction of alkali-induced egg white gel (EWG) were investigated. Results showed hardness and water holding capacity (WHC) gradually decreased at 1%. However, hardness and WHC declined and then rose at 2% and 3%. Microstructural changes further confirmed the effects of sodium ascorbate on hardness and WHC. Electrophoresis showed sodium ascorbate caused the cross-linking between proteins, which was more resistant to degradation. Fourier transform infrared spectroscopy (FTIR) and surface hydrophobicity indicated sodium ascorbate significantly changed protein structure, especially at 2% and 3% resulted in protein reaggregation, increasing β-sheet, and decreasing surface hydrophobicity in the later stage. In general, sodium ascorbate didn't inhibit the liquefaction of alkali-induced EWG at 1%, but did effectively at 2% and 3%. Therefore, high concentrations of sodium ascorbate possess the potential to inhibit the "alkali injury liquefaction" of preserved egg whites without heavy metals.
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26
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Tea polyphenols on emulsifying and antioxidant properties of egg white protein at acidic and neutral pH conditions. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112537] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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27
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Quality evaluation through sensory and image analysis of sponge cake crumb with three thermal egg pre-treatments. Int J Gastron Food Sci 2021. [DOI: 10.1016/j.ijgfs.2021.100390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Xue H, Xu M, Zhang G, Feng F, Wang Y, Cao D, Tu Y, Zhao Y. Effects of stewing with tea polyphenol on the gel properties, microstructure, and secondary structure of boiled egg white. J Food Sci 2021; 86:4262-4274. [PMID: 34564852 DOI: 10.1111/1750-3841.15919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 08/10/2021] [Accepted: 08/17/2021] [Indexed: 11/29/2022]
Abstract
This study aimed to investigatethe mechanism of stewing with tea polyphenols (TP) on the properties of boiled egg white gel (BEWG). The results indicated that, during the stewing process, soluble protein and hardness showed an overall increasing trend, while surface hydrophobicity showed a decreasing trend with blue-shift. The free sulfhydryl group showed that TP could promote the formation of disulfide bonds, and the position of immobilized water at T2 showed a decreasing trend. Environmental scanning electron microscopy and SDS-PAGE showed that the protein gel aggregation degree increased. Moreover, Fourier transform infrared spectrometry showed that protein polarity increased and that α-helices, β-turn, intramolecular β-sheets, as well as intermolecular antiparallel β-sheets showed an increasing trend. Generally, TP strengthened protein aggregation by promoting the formation of disulfide and hydrogen bonds, thus enhancing the gel strength of BEWG. Moreover, the secondary structure of proteins became more stable under the action of TP, and the higher the concentration of TP, the greater the effect on BEWG. PRACTICAL APPLICATION: TP, an ideal, cheap, and safe natural food additive, can be applied to the processing of egg products because the addition of TP can significantly improve the gel strength of egg white.
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Affiliation(s)
- Hui Xue
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Meng Xu
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Feng Feng
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Yuting Wang
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Danhui Cao
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Yonggang Tu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang, China
| | - Yan Zhao
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang, China
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Application of chia (Salvia hispanica) mucilage as an ingredient replacer in foods. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.06.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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30
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Liu Q, Wang Q, He P, Zhang Y, Pan L, Chen Y, Wu H, Zhang M. Heat-induced gel properties and gastrointestinal digestive properties of egg white produced by hens fed with selenium-enriched yeast. Food Chem 2021; 366:130712. [PMID: 34343953 DOI: 10.1016/j.foodchem.2021.130712] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 07/03/2021] [Accepted: 07/25/2021] [Indexed: 02/08/2023]
Abstract
The aim of this study was to investigate the effect of selenium enrichment on the gel properties and gastrointestinal digestive properties of egg white. Results of texture profile analysis, scanning electron microscopy and differential scanning calorimetry showed that the heat-induced gel of selenium-enriched egg white (EW-2) exhibited higher gel strength, smoother microstructure, and higher thermal denaturation temperature than ordinary egg white (EW-1), which might be due to the change of ovomucin and ovotransferrin content. The gastrointestinal digestive products of the EW-2 protein contained a higher proportion of small peptides and more free amino acids than those of EW-1. Results of oxygen radical absorbance capacity and cellular antioxidant activity assays indicated that digestive products of the EW-2 protein exhibited stronger antioxidant activity than those of the EW-1 protein. In summary, Se enrichment improved heat-induced gel properties of egg white, and promoted the gastrointestinal digestion of egg white protein.
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Affiliation(s)
- Qi Liu
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Qian Wang
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Ping He
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Yi Zhang
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Leiman Pan
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Yong Chen
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; College of Chemical and Biological, Guangxi Normal University for Nationalities, Chongzuo, Guangxi 532200, China
| | - Hui Wu
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China.
| | - Mengmeng Zhang
- College of Food Sciences and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China.
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31
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Varadavenkatesan T, Pai S, Vinayagam R, Pugazhendhi A, Selvaraj R. Recovery of value-added products from wastewater using Aqueous Two-Phase Systems - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 778:146293. [PMID: 33714810 DOI: 10.1016/j.scitotenv.2021.146293] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
Aqueous two-phase system (ATPS) is long seen as a technique that promotes higher purity and yield in a single step. It is witnessing increased acceptance as a preferred choice for combined goals of concentration, separation and purification of a target product, be it industrially valuable or environmentally contaminating. Purification of biomolecules like enzymes, proteins, nucleic acids, viruses, etc. has been the forte of ATPS. Currently, the technique is used for concentrating the toxic fractions from diverse industrial let offs, from food, dairy, beverage, pharmaceuticals, agriculture, dyeing, tannery and metal-processing industries. Apart from being simple, efficient, rapid, flexible, economical, and biocompatible, the selectivity, purity and yield are on par and sometimes higher than the traditional downstream steps. From an industrial angle too, problems related to scale-up of ATPS are being actively addressed. Many novel approaches are being added by way of varying ATPS components to increase the yield and purity. Another case in point is the inclusion of optimization techniques for zeroing in on the precise setting of the operating parameters. With increasing impetus to the approach, we attempt to draw attention from academia and industries, alike, that are developing novel tweaks to the currently existing practices in ATPS. This review aims to assess and evaluate the different types of ATPS that have been used for the recovery of valuables and contaminants from industrial waste discharges.
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Affiliation(s)
- Thivaharan Varadavenkatesan
- Department of Biotechnology, Manipal institute of technology (MIT), Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Shraddha Pai
- Department of Chemical engineering, Manipal institute of technology (MIT), Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Ramesh Vinayagam
- Department of Chemical engineering, Manipal institute of technology (MIT), Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | | | - Raja Selvaraj
- Department of Chemical engineering, Manipal institute of technology (MIT), Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India.
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32
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The effects of sugar alcohols on rheological properties, functionalities, and texture in baked products – A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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33
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Tang H, Tan L, Chen Y, Zhang J, Li H, Chen L. Effect of κ-carrageenan addition on protein structure and gel properties of salted duck egg white. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1389-1395. [PMID: 32835415 DOI: 10.1002/jsfa.10751] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 07/29/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Salted duck egg white (SDEW) is a major by-product during salted egg yolk manufacturing. Due to the high salt concentration, SDEW has not been efficiently utilized. Moreover, functional properties of SDEW are altered by salt during pickling. To improve the functional properties, the effect of κ-carrageenan (κ-CAR) addition on the protein structure and gel properties of SDEW was investigated in this study. RESULTS The surface hydrophobicity and free sulfhydryl content of SDEW protein increased, while total sulfhydryl content decreased significantly with the addition of κ-CAR (0.02-0.10%). Fourier-transform infrared spectroscopy analysis revealed that the relative content of α-helix and β-turn decreased, β-sheet and random coil increased, indicating the variation tendency of protein structure from order to disorder. As κ-CAR addition increased, the texture profiles including hardness, gumminess, chewiness, springiness, cohesiveness and resilience of SDEW gel were all improved. Water holding capacity increased significantly by 32.33% in the presence of 0.10% κ-CAR addition. The scanning electron microscopy indicated that the microstructure of SDEW/κ-CAR mixed gel was more smooth and compact. CONCLUSION The results suggested that adding κ-CAR can be an effective method to improve gel quality of SDEW. This study is expected to provide theoretical basis for modification of SDEW protein, as well as preparation of food ingredients with better gel properties from SDEW. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Honggang Tang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, P. R. China
| | - Lulan Tan
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, P. R. China
| | - Yifan Chen
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, P. R. China
| | - Jin Zhang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, P. R. China
| | - Huanhuan Li
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, P. R. China
| | - Lihong Chen
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, P. R. China
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Begam N, Ragulskaya A, Girelli A, Rahmann H, Chandran S, Westermeier F, Reiser M, Sprung M, Zhang F, Gutt C, Schreiber F. Kinetics of Network Formation and Heterogeneous Dynamics of an Egg White Gel Revealed by Coherent X-Ray Scattering. PHYSICAL REVIEW LETTERS 2021; 126:098001. [PMID: 33750145 DOI: 10.1103/physrevlett.126.098001] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/12/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
The kinetics of heat-induced gelation and the microscopic dynamics of a hen egg white gel are probed using x-ray photon correlation spectroscopy along with ultrasmall-angle x-ray scattering. The kinetics of structural growth reveals a reaction-limited aggregation process with a gel fractal dimension of ≈2 and an average network mesh size of ca. 400 nm. The dynamics probed at these length scales reveals an exponential growth of the characteristic relaxation times followed by an intriguing steady state in combination with a compressed exponential correlation function and a temporal heterogeneity. The degree of heterogeneity increases with decreasing length scale. We discuss our results in the broader context of experiments and models describing attractive colloidal gels.
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Affiliation(s)
- Nafisa Begam
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | | | - Anita Girelli
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | - Hendrik Rahmann
- Department Physik, Universität Siegen, 57072 Siegen, Germany
| | - Sivasurender Chandran
- Department of Physics, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Fabian Westermeier
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Mario Reiser
- Department Physik, Universität Siegen, 57072 Siegen, Germany
- European X-ray Free-Electron Laser GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Michael Sprung
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Fajun Zhang
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
| | - Christian Gutt
- Department Physik, Universität Siegen, 57072 Siegen, Germany
| | - Frank Schreiber
- Institut für Angewandte Physik, Universität Tübingen, 72076 Tübingen, Germany
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35
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Xue H, Xu M, Liao M, Luo W, Zhang G, Tu Y, Zhao Y. Effects of tea and illicium verum braise on physicochemical characteristics, microstructure, and molecular structure of heat-induced egg white protein gel. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106181] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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36
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Food protein network formation and gelation induced by conductive or microwave heating: A focus on hen egg white. INNOV FOOD SCI EMERG 2020. [DOI: 10.1016/j.ifset.2020.102484] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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37
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Xiong W, Li Y, Li B, Geng F. Relationship between gel properties and water holding of ovalbumin-carboxymethylcellulose electrostatic complex hydrogels. Int J Biol Macromol 2020; 167:1230-1240. [PMID: 33189755 DOI: 10.1016/j.ijbiomac.2020.11.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/04/2020] [Accepted: 11/11/2020] [Indexed: 02/06/2023]
Abstract
The relationship between the water holding (WH) and gel properties of protein-based hydrogels is important for designing and regulating the texture and sensory properties of foods. Herein, the relation among WH and heat-set gel properties of ovalbumin (OVA)-carboxymethylcellulose (CMC) electrostatic complexes was explored. The results showed that the gels exhibited homogeneous and dense structure and good WH compared with pure OVA at pH 4.6, while Young's modulus decreased significantly (P < 0.05). This was closely related to the inhibition of the electrostatic interaction on the formation of large protein aggregates during heat treatment (90 °C, 30 min). Specially, the CMC1.2 (the degree of substitution was 1.2) with higher charge density showed stronger interference than CMC0.7 (the degree of substitution was 0.7) for the gel network structure and properties. Moreover, the addition of salt ions could enhance the gel strength. Meanwhile, the coarseness and microstructure pore size were also increased with enhancing of ionic strength, resulting in a significant decrease in the WH. The effective permeability coefficient (k1) and water flux coefficient (k2) of gels have a significant positive correlation with their network pore size, indicated that the regulation of WH of hydrogel mainly depended on controlling the pore size of its microstructure.
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Affiliation(s)
- Wenfei Xiong
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, Jiangsu, China.
| | - Ya Li
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, Jiangsu, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Fang Geng
- College of Food and Biological Engineering, Chengdu University, No. 2025 Chengluo Avenue, Chengdu 610106, China
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38
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Kar A, Wei X, Majumder K, Eskridge K, Handa A, Subbiah J. Effect of traditional and radiofrequency assisted thermal processing on the gel firmness of egg white powder. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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39
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Deng C, Shao Y, Xu M, Yao Y, Wu N, Hu H, Zhao Y, Tu Y. Effects of metal ions on the physico-chemical, microstructural and digestion characteristics of alkali-induced egg white gel. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105956] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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40
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Nastaj M, Sołowiej B, Terpiłowski K, Mleko S. Effect of erythritol on physicochemical properties of reformulated high protein meringues obtained from whey protein isolate. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104672] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Yang Y, Zhao Y, Xu M, Yao Y, Wu N, Du H, Tu Y. Effects of strong alkali treatment on the physicochemical properties, microstructure, protein structures, and intermolecular forces in egg yolks, plasma, and granules. Food Chem 2020; 311:125998. [DOI: 10.1016/j.foodchem.2019.125998] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 11/24/2019] [Accepted: 11/30/2019] [Indexed: 10/25/2022]
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42
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Monaci L, Pilolli R, De Angelis E, Crespo JF, Novak N, Cabanillas B. Food allergens: Classification, molecular properties, characterization, and detection in food sources. ADVANCES IN FOOD AND NUTRITION RESEARCH 2020; 93:113-146. [PMID: 32711861 DOI: 10.1016/bs.afnr.2020.03.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Food allergy is a large and growing public health problem in many areas of the world. The prevalence of food allergy has increased in the last decades in a very significant way in many world regions, particularly in developed countries. In that respect, the research field of food allergy has experienced an extensive growth and very relevant progress has been made in recent years regarding the characterization of food allergens, the study of their immunological properties, and their detection in food sources. Furthermore, food labeling policies have also been improved decidedly in recent years. For that immense progress made, it is about time to review the latest progress in the field of food allergy. In this review, we intend to carry out an extensive and profound overview regarding the latest scientific advances and knowledge in the field of food allergen detection, characterization, and in the study of the effects of food processing on the physico-chemical properties of food allergens. The advances in food labeling policies, and methodologies for the characterization of food allergens are also thoroughly reviewed in the present overview.
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Affiliation(s)
- Linda Monaci
- Institute of Sciences of Food Production, CNR-ISPA, Bari, Italy
| | - Rosa Pilolli
- Institute of Sciences of Food Production, CNR-ISPA, Bari, Italy
| | | | - Jesus F Crespo
- Department of Allergy, Research Institute Hospital 12 de Octubre de Madrid, Madrid, Spain
| | - Natalija Novak
- Department of Dermatology and Allergy, University Hospital Bonn, Bonn, Germany
| | - Beatriz Cabanillas
- Department of Allergy, Research Institute Hospital 12 de Octubre de Madrid, Madrid, Spain.
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43
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Jiang Y, Jia J, Xiong D, Xu X, Yang Y, Liu X, Duan X. Effects of short-term fermentation with lactic acid bacteria on egg white: Characterization, rheological and foaming activities. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105507] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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44
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Gao X, Yao Y, Wu N, Xu M, Zhao Y, Tu Y. The sol-gel-sol transformation behavior of egg white proteins induced by alkali. Int J Biol Macromol 2020; 155:588-597. [PMID: 32234445 DOI: 10.1016/j.ijbiomac.2020.03.209] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 12/12/2022]
Abstract
In the current study, we found an interesting phenomenon that fresh egg white (EW) undergo the sol-gel-sol transition with alkali treatment. The transformation behavior at different alkalinity (1.5%, 2.0%, and 2.5%) was investigated. As the gel formed, the hardness, lightness, surface hydrophobicity and the total number of identified peptides increased, and then, remarkable reduction when the gel collapsed. Rheological behavior indicated that the viscosity varied with shear rate. Fourier transform infrared spectroscopy (FTIR) showed that β-sheets gradually decreased as the α-helices increased during gel-sol transformation. The quantification of EW peptides analysis revealed that there was no dramatic correlation between the number of identified peptides and alkalinity. It was concluded that the sol-gel-sol transition was strongly dependent on alkali levels, moreover, high concentration promoted gel formation as well as liquefaction. The EW transformation behavior induced by alkali had a significant effect on protein aggregation and denaturation, and further changed physicochemical properties.
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Affiliation(s)
- Xuejing Gao
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yao Yao
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China
| | - Na Wu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China
| | - Mingsheng Xu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Yan Zhao
- Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China.
| | - Yonggang Tu
- Jiangxi Key Laboratory of Natural Products and Functional Food, Jiangxi Agricultural University, Nanchang 330045, China.
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45
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Sponton OE, Perez AA, Stechina MF, Santiago LG. Production of protein nanovehicles by heat treatment of industrial egg white in a batch reactor. J FOOD ENG 2020. [DOI: 10.1016/j.jfoodeng.2019.109740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Li J, Wang C, Gu L, Su Y, Chang C, Yang Y. Gel properties of salty liquid whole egg as affected by preheat treatment. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2020; 57:877-885. [PMID: 32123408 PMCID: PMC7026345 DOI: 10.1007/s13197-019-04119-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/10/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
Heat treatment is an indispensable processing step of seasoned liquid egg. The effects of preheat treatment (60-75 °C) on gel properties of liquid whole egg (LWE) at different NaCl concentrations (0-3%, w/w) were investigated to provide guidance for the production of salty LWE. Results showed that LWE exhibited higher particle size after heating, with coincidental increases in surface hydrophobicity and decreases in protein solubility. While LWE with NaCl added exhibited increase in protein solubility and decrease in particle size of aggregates. Electrophoresis and optical microscopy showed that NaCl would induce the transformation of egg granules from insoluble form to soluble form, inhibiting the aggregation of LWE proteins during preheat treatment, reflected by the reduced particle size. The analysis of gel aggregated force and texture indicated that NaCl addition and preheat treatment can improve gelling properties of LWE synergistically by strengthening the hydrophobic interaction and hydrogen bonds.
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Affiliation(s)
- Junhua Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
| | - Chenying Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
| | - Luping Gu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
| | - Yujie Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
| | - Cuihua Chang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
| | - Yanjun Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122 Jiangsu China
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47
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Ina S, Hamada A, Nakamura H, Yamaguchi Y, Kumagai H, Kumagai H. Rice (Oryza sativa japonica) albumin hydrolysates suppress postprandial blood glucose elevation by adsorbing glucose and inhibiting Na+-d-glucose cotransporter SGLT1 expression. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103603] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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48
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Anukiruthika T, Moses J, Anandharamakrishnan C. 3D printing of egg yolk and white with rice flour blends. J FOOD ENG 2020. [DOI: 10.1016/j.jfoodeng.2019.109691] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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49
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Sun J, Jing H, Liu T, Dong S, Obadi M, Xu B. Evaluation of antioxidant modification on the functional and structural properties of EWP conjugates. RSC Adv 2020; 10:10666-10672. [PMID: 35492916 PMCID: PMC9051656 DOI: 10.1039/d0ra00023j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/05/2020] [Indexed: 11/21/2022] Open
Abstract
The aim of this present study was to improve the oxidative stability of egg white protein (EWP) through catechin (CT) and epigallocatechin gallate (EGCG) covalent modification via an alkaline method at pH 9.0. Effects of CT and EGCG conjugation on the antioxidant activities, physicochemical and structural properties of EWP were comprehensively studied. The results indicated that CT and EGCG modification altered the isoelectric point value of EWP to lower pH, thus the solubility of EWP conjugates at pH 3.8 decreased, especially after EGCG conjugation. In addition, the antioxidant activities of EWP–CT and EWP–EGCG conjugates were 2.88 and 3.52 fold (2-diphenyl-1-picrylhydrazyl radical scavenging activities), 2.60 and 7.91 fold (ferric reducing powers) higher than that of the unmodified EWP. Moreover, the CT or EGCG conjugation resulted in an increase in alpha-helix formation with a decrease in the β-sheet formation, indicating that the secondary structure of EWP became more compact after CT or EGCG modification, and Trp and Tyr residues were involved into the conjugation reaction of EWP with CT or EGCG. Furthermore, CT and EGCG conjugation obviously improved the emulsifying stability of EWP, due to the improvement of the antioxidant activity after being modified by the CT or EGCG. In conclusion, CT or EGCG conjugation with EWP via an alkaline method was an effective way to improve the utilization value of EWP. The aim of this present study was to improve the oxidative stability of egg white protein (EWP) through catechin (CT) and epigallocatechin gallate (EGCG) covalent modification via an alkaline method at pH 9.0.![]()
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Affiliation(s)
- Jun Sun
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Hui Jing
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Tengmei Liu
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang
- China
| | | | - Mohammed Obadi
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Bin Xu
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang
- China
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M Y, C K S, S S, S D H, D V C, Rawson A. Protein-based Fat Replacers – A Review of Recent Advances. FOOD REVIEWS INTERNATIONAL 2019. [DOI: 10.1080/87559129.2019.1701007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yashini M
- Department of Food Engineering, Indian Institute of Food Processing Technology, Thanjavur, India
| | - Sunil C K
- Department of Food Engineering, Indian Institute of Food Processing Technology, Thanjavur, India
| | - Sahana S
- Department of Food Engineering, Indian Institute of Food Processing Technology, Thanjavur, India
| | - Hemanth S D
- Department of Food Engineering, Indian Institute of Food Processing Technology, Thanjavur, India
| | - Chidanand D V
- Department of Industry Academia Cell, Indian Institute of Food Processing Technology, Thanjavur, India
| | - Ashish Rawson
- Department of Food Safety and Quality Testing, Indian Institute of Food Processing Technology, Thanjavur, India
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