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Huang X, Li X, Zhang Y, Li X, Zhang P, Song H, Huang Q, Fu G. Influence mechanisms of linoleic acid and oleic acid on the gel properties of egg yolk protein. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:6787-6798. [PMID: 38567870 DOI: 10.1002/jsfa.13507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/07/2024] [Accepted: 04/03/2024] [Indexed: 04/18/2024]
Abstract
BACKGROUND Gel property is among the crucial functional properties of egg yolk (EY), which determines the texture and flavor of EY products. In the present study, the effects of two unsaturated fatty acids [monounsaturated fatty acid oleic acid (OA) and diunsaturated fatty acid linoleic acid (LA)] on the gel properties of EY protein were investigated. RESULTS Compared with the blank group, the addition of LA and OA (10-50 g kg-1) improved the gel hardness (from 270.54 g to 385.85 g and 414.38 g, respectively) and viscosity coefficient (from 0.015 Pa.sn to 11.892 Pa.sn and 1.812 Pa.sn, respectively). The surface hydrophobicity of EY protein increased to a maximum value of 40 g kg-1 with the addition of both fatty acids (39.06 μg and 41.58 μg, respectively). However, excess unsaturated fatty acids (≥ 50 g kg-1) disrupted the completeness of the gel matrix and weakened the structural properties of the EY gel. CONCLUSION Both fatty acids improved the gel properties of EY protein. At the same addition level, OA was superior to LA in improving gel properties. The present study provides a theoretical underpinning for the sensible application of unsaturated fatty acids in improving EY gel properties. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Xinyuan Huang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, China
- Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xin Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, China
- Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yufeng Zhang
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, China
- Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiefei Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, China
| | - Pei Zhang
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, China
- Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Hongbo Song
- Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qun Huang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, China
- Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Guiming Fu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, China
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Li X, Wu Y, Duan W, Chen L, Cheng L, Liu J, Zhou Y, Ai C, Li X, Huang Q. Emulsification properties of ovalbumin-fucoidan (OVA-FUC) binary complexes. Food Chem X 2024; 22:101457. [PMID: 38798795 PMCID: PMC11126805 DOI: 10.1016/j.fochx.2024.101457] [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: 12/18/2023] [Revised: 05/01/2024] [Accepted: 05/07/2024] [Indexed: 05/29/2024] Open
Abstract
The poor thermal stability and emulsifying properties of ovalbumin (OVA) limit its functional performance, but these limitations may be overcome by forming binary complexes. We prepared binary complexes of OVA and fucoidan (FUC) through electrostatic self-assembly and investigated the emulsifying properties of the complex by measuring the particle size, interfacial membrane thickness, zeta potential, and stability of the emulsion prepared with camellia oil and the complex. The OVA-FUC emulsions have a thicker interfacial membrane, lower mobility, higher viscosity, and better stability compared with the OVA emulsions. The emulsion prepared with 1.5 % OVA-FUC remained stable and homogeneous during storage. They tended to become unstable with freeze-thaw, but the oil encapsulated did not leak after coalescence occurred. With the addition of Ca2+, the OVA-FUC emulsion will be converted into a gel state. These findings indicate that OVA-FUC binary complexes can be used to prepare high-performance emulsions with great potential for development.
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Affiliation(s)
- Xiefei Li
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Yingmei Wu
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Wenshan Duan
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lei Chen
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang 524088, China
| | - Lujie Cheng
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Junmei Liu
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yan Zhou
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Chao Ai
- College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang 524088, China
| | - Xin Li
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Qun Huang
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, the Key Laboratory of Environmental Pollution Monitoring and Disease Control of Ministry of Education, Guizhou Medical University, Guiyang 550025, China
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
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3
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Huang X, Yang H, Lou A, Jiang S, Kang K, Wei Y, Li X, Wu Y, Yu M, Huang Q. Effect of psyllium husk powder on the gelation behavior, microstructure, and intermolecular interactions in myofibrillar protein gels from Andrias davidianus. Food Chem 2024; 458:140266. [PMID: 38964095 DOI: 10.1016/j.foodchem.2024.140266] [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: 03/30/2024] [Revised: 06/11/2024] [Accepted: 06/26/2024] [Indexed: 07/06/2024]
Abstract
The interaction between proteins and soluble dietary fibers plays a vital role in the development of animal-derived foods. Herein, the effects of different contents (0-3.0%) of round-bracted psyllium husk powder (PHP) on the gelation behavior, microstructure, and intermolecular interactions of Andrias davidianus myofibrillar protein (MP) were investigated. Rheological and chemical forces suggested that PHP (1.5%-2.0%) enhanced the functional properties of MP at low ionic strength, thereby increasing the viscoelasticity of mixed gels. SDS-PAGE revealed that PHP reinforced the cross-linking and aggregation of protein molecules. Circular dichroism spectroscopy, low-field nuclear magnetic resonance, and scanning electron microscopy demonstrated that PHP induced the transformation of α-helix (decreased by 14.85%) to an ordered β-sheet structure (increased by 81.58%), which was more favorable for the formation of dense network structure and improved (10.53%) the water retention of MP gels. This study provided new insights for PHP to effectively meliorate the heat-induced gelling properties of MP.
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Affiliation(s)
- Xiang Huang
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, 550025, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Hui Yang
- DongTing Laboratory, Hunan Agricultural Product Processing Institute, Hunan, Academy of Agricultural Sciences, Changsha 410125, China.
| | - Aihua Lou
- College of Food Science and Technology, Hunan Agricultural University, Changsha 420128, China
| | - Shuiyan Jiang
- DongTing Laboratory, Hunan Agricultural Product Processing Institute, Hunan, Academy of Agricultural Sciences, Changsha 410125, China
| | - Kelang Kang
- DongTing Laboratory, Hunan Agricultural Product Processing Institute, Hunan, Academy of Agricultural Sciences, Changsha 410125, China
| | - Yingjuan Wei
- DongTing Laboratory, Hunan Agricultural Product Processing Institute, Hunan, Academy of Agricultural Sciences, Changsha 410125, China.
| | - Xin Li
- DongTing Laboratory, Hunan Agricultural Product Processing Institute, Hunan, Academy of Agricultural Sciences, Changsha 410125, China
| | - Yingmei Wu
- DongTing Laboratory, Hunan Agricultural Product Processing Institute, Hunan, Academy of Agricultural Sciences, Changsha 410125, China.
| | - Meijuan Yu
- DongTing Laboratory, Hunan Agricultural Product Processing Institute, Hunan, Academy of Agricultural Sciences, Changsha 410125, China.
| | - Qun Huang
- School of Public Health, Guizhou Province Engineering Research Center of Health Food Innovative Manufacturing, Guizhou Medical University, Guiyang, 550025, China.
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4
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Deng Y, Zhao G, Cheng K, Shi C, Xiao G. Effect of Apple Polyphenols on the Antioxidant Activity and Structure of Three-Dimensional Printed Processed Cheese. Foods 2023; 12:foods12081731. [PMID: 37107526 PMCID: PMC10137760 DOI: 10.3390/foods12081731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/09/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023] Open
Abstract
Additives can influence the processability and quality of three-dimensional (3D)-printed foods. Herein, the effects of apple polyphenols on the antioxidant activity and structure of 3D-printed processed cheese were investigated. The antioxidant activities of processed cheese samples with different contents of apple polyphenols (0%, 0.4%, 0.8%, 1.2%, or 1.6%) were evaluated using 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-di(4-tert-octylphenyl)-1-picrylhydrazyl (DPPH) assays. In addition, the rheological properties and structural characteristics of the processed cheeses were investigated using rheometry, Fourier transform infrared spectroscopy, and fluorescence spectroscopy. Then, the final printed products were analyzed for comparative molding effects and dimensional characteristics. it was found that apple polyphenols can significantly improve the antioxidant activity of processed cheese. When the amount of apple polyphenols added was 0.8%, the 3D shaping effect was optimal with a porosity rate of 4.1%. Apple polyphenols can be used as a good antioxidant additive, and the moderate addition of apple polyphenols can effectively improve the antioxidant and structural stability of 3D-printed processed cheese.
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Affiliation(s)
- Yiqiu Deng
- Key Laboratory of Agricultural Products Chemical and Biological Processing Technology, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Guangsheng Zhao
- Hangzhou New Hope Shuangfeng Dairy Products Co., Ltd., Hangzhou 311100, China
| | - Kewei Cheng
- Hangzhou Institute for Food and Drug Control, Hangzhou 310017, China
| | | | - Gongnian Xiao
- Key Laboratory of Agricultural Products Chemical and Biological Processing Technology, Zhejiang University of Science and Technology, Hangzhou 310023, China
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5
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Guo X, Xu S, Meng X, Peng Z. Dose-Dependent Effect of Hyperoside on the Physicochemical and Gel Properties of Porcine Myofibrillar Proteins at Different NaCl Concentrations under Oxidative Stress. Foods 2023; 12:foods12081684. [PMID: 37107482 PMCID: PMC10137490 DOI: 10.3390/foods12081684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/13/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
The effects of HYP (10, 50, and 250 μM/g protein) on the physicochemical and gel properties of myofibrillar proteins (MPs) at different NaCl concentrations under oxidative stress were explored. The incorporation of HYP significantly reduced carbonyl content and decreased the loss of free amine groups in a dose-dependent manner, regardless of NaCl concentration. In addition, HYP induced a dose-dependent decrement in total sulfhydryl content regardless of NaCl concentration, which might result from the formation of thiol-quinone adducts via Michael addition. The surface hydrophobicity was significantly increased with HYP addition. Nevertheless, compared with samples treated with 50 μM/g HYP, 250 μM/g HYP caused a significant decrease in surface hydrophobicity, which might be due to the increase in the extent of MPs unfolding and the concomitant aggregation of MPs by hydrophobic interaction. Furthermore, HYP also showed a dose-dependent increment in the water-holding capacity (WHC) and gel strength of MPs gels, which might be due to more orderly crosslinks via fibrous filaments at 0.2 M NaCl and more regular and lamellar structures with smaller and more homogeneous pores at 0.6 M NaCl. In summary, HYP reduced the oxidation-mediated changes of physicochemical characteristics, preventing the oxidative damage of MPs and reinforcing the ordered crosslinks of MPs-MPs and MPs-HYP during thermal gelation, ultimately resulting in a better gel quality. These results provide a theoretical support for the practical application of HYP as a natural antioxidant in gel-type meat products.
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Affiliation(s)
- Xiuyun Guo
- School of Turism and Cuisine, Yangzhou University, Yangzhou 225127, China
| | - Shuangyi Xu
- School of Turism and Cuisine, Yangzhou University, Yangzhou 225127, China
| | - Xiangren Meng
- School of Turism and Cuisine, Yangzhou University, Yangzhou 225127, China
| | - Zengqi Peng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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6
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Zhang H, Li X, Sun S, Wang Y, Li Z, Kang H, Peng X. Effects of carboxymethyl chitosan on the oxidation stability and gel properties of myofibrillar protein from frozen pork patties. Int J Biol Macromol 2023; 234:123710. [PMID: 36801276 DOI: 10.1016/j.ijbiomac.2023.123710] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/19/2023] [Accepted: 02/11/2023] [Indexed: 02/19/2023]
Abstract
The effect of carboxymethyl chitosan (CMCH) on the oxidation stability and gel properties of myofibrillar protein (MP) from frozen pork patties was investigated. The results showed that CMCH could inhibit the denaturation of MP induced by freezing. Compared with the control group, the protein solubility was significantly (P < 0.05) increased, while the carbonyl content, the loss of sulfhydryl groups, and the surface hydrophobicity were decreased, respectively. Meanwhile, the incorporation of CMCH could alleviate the influence of frozen storage on water mobility and reduce the water loss. With the increased concentration of CMCH, the whiteness, strength, and water-holding capacity (WHC) of MP gels were significantly improved, in which the maximum value was at addition level of 1 %. In addition, CMCH inhibited the decrease in the maximum elastic (G') value and loss factor (tan δ) value of samples. By scanning electron microscopy (SEM) observation, CMCH stabilized the microstructure of the gel and maintained the relative integrity of the gel tissue. These findings suggest that CMCH could be used as a cryoprotectant to maintain the structural stability of MP in pork patty during frozen storage.
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Affiliation(s)
- Huiyun Zhang
- Food and Bioengineering Department, Henan University of Science and Technology, Luoyang, Henan 471003, China.
| | - Xinling Li
- Food and Bioengineering Department, Henan University of Science and Technology, Luoyang, Henan 471003, China
| | - Shuoshuo Sun
- Food and Bioengineering Department, Henan University of Science and Technology, Luoyang, Henan 471003, China
| | - Yuantu Wang
- Food and Bioengineering Department, Henan University of Science and Technology, Luoyang, Henan 471003, China
| | - Ziyan Li
- Food and Bioengineering Department, Henan University of Science and Technology, Luoyang, Henan 471003, China
| | - Huaibin Kang
- Food and Bioengineering Department, Henan University of Science and Technology, Luoyang, Henan 471003, China
| | - Xinyan Peng
- College of Life Science, Yantai University, Yantai, Shandong 264025, China
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Huang X, Tu R, Song H, Dong K, Geng F, Chen L, Huang Q, Wu Y. Fabrication and characterization of gelatin-EGCG-pectin ternary complex: formation mechanism, emulsion stability, and structure. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1442-1453. [PMID: 36168822 DOI: 10.1002/jsfa.12240] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/18/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Protein-polyphenol-polysaccharide ternary complex particles have better emulsion interfacial stability compared to protein-polysaccharide binary complexes. However, knowledge is scarce when it comes to the fabrication of protein-polyphenol-polysaccharide ternary complexes as interfacial stabilizers and the interactions between the three substances. In the present work, ternary complexes were prepared using gelatin, high methoxyl pectin, and epigallocatechin gallate (EGCG) as raw materials. The effect of different influencing factors on the formation process of ternary complexes was investigated by varying different parameters. physicochemical stability, emulsifying properties, and structural characteristics were analyzed. RESULTS The ternary complex had a smaller particle size (275 nm) and polydispersity index (0.112) when the mass concentration ratio of gelatin to high methoxyl pectin was 9:1, addition of EGCG was 0.05%, pH value was 3.0, and ionic strength was 10 mmol L-1 . Meanwhile, the complex had the highest emulsifying stability index (691.75 min) and emulsifying activity index (22.96 m2 g-1 ). Scanning electron microscopical observation demonstrated that the addition of EGCG promoted the dispersion of ternary complex more uniformly, and effectively reduced the agglomeration phenomenon. The discrepancy in fluorescence intensity suggested that interactions between EGCG and gelatin occurred, which altered the protein spatial conformation of gelatin. Fourier transform infrared spectroscopic analysis elucidated that hydrogen bond interaction was the primary non-covalent interaction between EGCG and gelatin-high methoxyl pectin binary complex. CONCLUSION The aforementioned results purposed to provide some theoretical reference and basis for the rational design of stable protein-polyphenol-polysaccharide ternary complexes. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xiang Huang
- School of Public Health, Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Engineering Research Centre of Fujian - Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Rui Tu
- Engineering Research Centre of Fujian - Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Hongbo Song
- Engineering Research Centre of Fujian - Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Kai Dong
- Engineering Research Centre of Fujian - Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Fang Geng
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Lei Chen
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Ocean University, Zhanjiang, China
| | - Qun Huang
- School of Public Health, Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Engineering Research Centre of Fujian - Taiwan Special Marine Food Processing and Nutrition of Ministry of Education, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu, China
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yingmei Wu
- School of Public Health, Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
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8
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Gao X, Yang S, You J, Yin T, Xiong S, Liu R. Changes in Gelation Properties of Silver Carp Myosin Treated by Combination of High Intensity Ultrasound and NaCl. Foods 2022; 11:foods11233830. [PMID: 36496636 PMCID: PMC9735971 DOI: 10.3390/foods11233830] [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: 11/04/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
The molecular behavior of myosin in a low-salt environment limited the production of surimi-based products. This study aimed to investigate the effect of the combination of high intensity ultrasound (HIU) and NaCl (0.1, 0.3, 0.5 mol/L) on the physicochemical indexes of myosin. The changes were evaluated by solubility, ultraviolet (UV) spectroscopy, dynamic rheological properties, water holding capacity (WHC), microstructures, etc. For control samples, the gelation properties of myosin strengthened upon NaCl increasing. Combination of HIU and NaCl significantly improved the solubility of myosin, which was due to the conformational changes and the exposure of reactive groups. Meanwhile, the particle size of myosin obviously decreased when observed by atomic force microscope, which in turn promoted the stability of myosin. Furthermore, the improvement in solution behaviors of myosin treated by combination of HIU and NaCl contributed to the gelation properties as well as the formation of compact microstructures, which obtained high WHC and low cooking loss of myosin gels. In conclusion, combination of HIU and NaCl induced the unfolding of myosin with the exposure of reactive groups, consequently facilitating the formation of denser microstructures. Moreover, the biggest degree of improvement in gelation properties was observed at 0.1 mol/L NaCl combined with HIU.
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Affiliation(s)
- Xia Gao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education , Wuhan 430070, China
- National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Wuhan 430070, China
| | - Shengnan Yang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education , Wuhan 430070, China
- National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Wuhan 430070, China
| | - Juan You
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education , Wuhan 430070, China
- National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Wuhan 430070, China
| | - Tao Yin
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education , Wuhan 430070, China
- National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Wuhan 430070, China
| | - Shanbai Xiong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education , Wuhan 430070, China
- National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Wuhan 430070, China
| | - Ru Liu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education , Wuhan 430070, China
- National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Wuhan 430070, China
- Correspondence:
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9
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Luo X, Lu J, Wu Y, Duan W, An F, Huang Q, Chen L, Wei S. Reducing the potential allergenicity of amandin through binding to (-)-epigallocatechin gallate. Food Chem X 2022; 16:100482. [PMID: 36304206 PMCID: PMC9594120 DOI: 10.1016/j.fochx.2022.100482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/09/2022] [Accepted: 10/18/2022] [Indexed: 11/05/2022] Open
Abstract
Amandin (AMP) binding to EGCG changed protein structure. AMP bound to EGCG primarily through glutamate and cysteine residues. Alkaline and free radical methods dented AMP allergenic, but the principles differed.
Potential allergenicity of amandin was reduced by binding amandin with (−)-epigallocatechin gallate (EGCG) via alkaline, free radical, ultrasound-assisted alkaline, and ultrasound-assisted free radical methods. These results of total phenol content, free sulfhydryl group, free amino group, surface hydrophobicity, and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) indicated that amandin might be covalently bound to EGCG through reactive groups such as sulfhydryl and amino groups, or non-covalently through hydrophobic interactions. Fourier transformed infrared (FT-IR) spectroscopy and fluorescence spectroscopy revealed structural changes of amandin-EGCG conjugate, which also caused significant reduction in potential allergenicity of amandin. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) found that amandin bound to EGCG mainly through cysteine and glutamate residues, and linear epitope for amandin was reduced. This provided a new method and theoretical basis of hypoallergenic almond food.
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Affiliation(s)
- Xin Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Jiankang Lu
- Production & Construction Group Key Laboratory of Special Agricultural Products Further Processing in Southern Xinjiang, Xinjiang Province, 843300, China
| | - Yongyan Wu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Wenshan Duan
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Fengping An
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Qun Huang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China,Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education & Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang 550004, Guizhou, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
| | - Lei Chen
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
| | - Shaofeng Wei
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
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10
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Quantitative proteomics provides a new perspective on the mechanism of network structure depolymerization during egg white thinning. Food Chem 2022; 392:133320. [DOI: 10.1016/j.foodchem.2022.133320] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 05/16/2022] [Accepted: 05/24/2022] [Indexed: 12/11/2022]
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11
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Zheng M, Hong J, Chuai P, Chen Y, Ni H, Li Q, Jiang Z. Impacts of agar gum and fucoidan on gel properties of surimi products without phosphate. Food Sci Nutr 2022; 10:3759-3771. [PMID: 36348786 PMCID: PMC9632187 DOI: 10.1002/fsn3.2973] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 05/15/2022] [Accepted: 06/21/2022] [Indexed: 11/16/2022] Open
Abstract
Phosphate is widely used in surimi products to improve the gel properties. However, excess addition of phosphate occurs, which can harm the consumer's health. This study aimed to evaluate the effects of agar gum and fucoidan on maintaining the gel properties of surimi products instead of phosphate. Interestingly, our results showed that 0.125% of agar gum and fucoidan to replace phosphate could enhance water‐holding capacity and maintain gel strength and textual properties of surimi products well. Especially at frozen storage for 1 year, 0.125% of agar gum reduced the expressible moisture content of surimi products by around 10% (p < .05). Sensory evaluation showed that 0.125% of agar gum and fucoidan instead of phosphate can improve tissue and fondness of surimi products in refrigerated storage for 24 h but not in frozen storage for 1 year. The addition of agar gum and fucoidan at a high concentration >0.50% increased the WHC, but significantly decreased gel strength and springiness of surimi products (p < .05). Particularly, 1.00% of agar gum and fucoidan reduced gel strength by around 20% (p < .05). It might be due to the destruction of the gel network structure of surimi protein following the excess addition of these polysaccharides. It can be concluded that 0.125% of agar gum and fucoidan can replace phosphate to develop high‐quality surimi products, and excessive addition of them have negative effects.
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Affiliation(s)
- Mingjing Zheng
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic University Dalian Liaoning China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen Fujian China
- Research Center of Food Biotechnology of Xiamen City Xiamen Fujian China
| | - Jinling Hong
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
| | - Pengjie Chuai
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
| | - Yanhong Chen
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic University Dalian Liaoning China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen Fujian China
- Research Center of Food Biotechnology of Xiamen City Xiamen Fujian China
| | - Hui Ni
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic University Dalian Liaoning China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen Fujian China
- Research Center of Food Biotechnology of Xiamen City Xiamen Fujian China
| | - Qingbiao Li
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic University Dalian Liaoning China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen Fujian China
- Research Center of Food Biotechnology of Xiamen City Xiamen Fujian China
| | - Zedong Jiang
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic University Dalian Liaoning China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen Fujian China
- Research Center of Food Biotechnology of Xiamen City Xiamen Fujian China
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12
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Huang X, Tu R, Song H, Dong K, Geng F, Chen L, Huang Q, Wu Y. Gelatin-EGCG-high methoxyl pectin ternary complex stabilized W1/O/W2 double emulsions loaded with vitamin C: Formation, structure, stability, in vitro gastrointestinal digestion. Int J Biol Macromol 2022; 216:891-905. [DOI: 10.1016/j.ijbiomac.2022.07.210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 12/13/2022]
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13
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Liu L, Wang Q, Wu Y, Wang G, Geng F, Song H, Luo P, Huang Q. Effect of ball milling-assisted glycosylation modification on the structure and foaming property of egg white protein. J Food Sci 2022; 87:3117-3128. [PMID: 35703671 DOI: 10.1111/1750-3841.16218] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 05/07/2022] [Accepted: 05/16/2022] [Indexed: 11/28/2022]
Abstract
The effect of different glycosylation degrees on molecular structure and foaming property of egg white protein (EWP) was investigated using ball milling-assisted glycosylation. The results showed the foaming ability (FA) and foam stability (FS) of EWP improved when the degree of glycosylation was increased. In particular, FA of ball milling-assisted glycosylation of EWP enhanced by 39.9% and 28.8%, and the FS increased by 28.7% and 24.0% compared with EWP and ball milling egg white protein (BE) at 150 min of reaction. Sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) analysis could reflect the grafting degree of EWP and glucose molecules from the side. When EWP was fully grafted with glucose, endogenous fluorescence and free sulfhydryl groups indicated that tertiary structure of EWP was depolymerized, and Fourier transform infrared spectroscopy showed the secondary structure tended to change from order to disorder. The results of this study indicated that ball milling-assisted glycosylation modification was a practical method to improve the foaming property of EWP. PRACTICAL APPLICATION: EWP has great FA and FS, making it indispensable in the baking industry. In this study, ball milling-assisted glycosylation was used to improve the foaming property of EWP, and the molecular structure of EWP with different degrees of glycosylation was fully resolved. The results demonstrated that ball milling, as a physical pretreatment, can fully unfold the structure of EWP. When sugar molecules were fully grafted, the particle size of EWP reduced, solubility increased, and the stability of system improved, thus enhancing the foaming property of EWP. The results can provide theoretical basis for improving the foaming property of EWP and provide a reference value for its industrial application.
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Affiliation(s)
- Lan Liu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.,Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qia Wang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.,Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yongyan Wu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.,Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Guoze Wang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Fang Geng
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Hongbo Song
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Peng Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Qun Huang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China.,Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China.,Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu, China.,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education & Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, China
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14
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Effect of microwave-ultrasonic combination treatment on heating-induced gel properties of low-sodium tilapia surimi during gel setting stage and comparative analysis. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Identification, characterization and binding sites prediction of calcium transporter-embryo egg-derived egg white peptides. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01398-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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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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17
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Huang X, Sun L, Liu L, Wang G, Luo P, Tang D, Huang Q. Study on the mechanism of mulberry polyphenols inhibiting oxidation of beef myofibrillar protein. Food Chem 2022; 372:131241. [PMID: 34627085 DOI: 10.1016/j.foodchem.2021.131241] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/05/2021] [Accepted: 09/24/2021] [Indexed: 01/17/2023]
Abstract
In order to explore the mechanism of mulberry polyphenols inhibiting the oxidation of myofibrillar protein (MP), the effect of mulberry polyphenols on the structure and physicochemical properties of MP in the oxidation system was investigated. The results revealed that the content of carbonyl group and sulfhydryl group of MP was notably reduced, while the Zeta potential, storage modulus G' and surface hydrophobicity were improved when the addition of mulberry polyphenol was 0.5%. SDS-PAGE showed an irreducible aggregation of mulberry polyphenols with proteins. Fluorescence spectroscopy and FT-IR analysis manifested that mulberry polyphenols promoted the unfolding of protein structure and the transformation of α-helix to β-turn structure. Scanning electron microscopy (SEM) observed that oxidation with polyphenols facilitated the cross-linking and aggregation of MP more tightly. Nevertheless, excessive addition (≥1.0%) weakened its gel properties. Thus, to maintain the good quality of meat products, both polyphenols addition and oxidation intensity should be controlled simultaneously.
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Affiliation(s)
- Xiang Huang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Lu Sun
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China; Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural, Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, Guangdong 510610, China
| | - Lan Liu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Guoze Wang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Peng Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China.
| | - Daobang Tang
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural, Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, Guangdong 510610, China.
| | - Qun Huang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China; Meat Processing Key Laboratory of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan 610106, China.
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18
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Mechanism of effect of heating temperature on functional characteristics of thick egg white. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112807] [Citation(s) in RCA: 6] [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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19
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Huang X, Sun L, Dong K, Wang G, Luo P, Tang D, Huang Q. Mulberry fruit powder enhanced the antioxidant capacity and gel properties of hammered minced beef: Oxidation degree, rheological, and structure. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Latha N, Kavyashree D, Lavanya D, Darshan G, Malleshappa J, Nijalingappa T, Nagabhushana H. Spectroscopic investigation of ultrasound assisted sonochemical synthesis of BiOCl: Dy3+ nanophosphors for latent fingerprints visualization. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.109039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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