1
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Zhou Q, Xu Z, Wei Z. Precise control of aggregation morphology: Effective strategy to tune the properties of ovotransferrin particles. Int J Biol Macromol 2023; 253:126850. [PMID: 37703969 DOI: 10.1016/j.ijbiomac.2023.126850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 08/25/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
Different aggregation morphologies of ovotransferrin (OVT) aggregates were successfully obtained through precise control, and the effects on structural, physical, liquid-liquid and gas-liquid interfacial characteristics as well as mechanisms were explored for the first time. It was observed that the surface hydrophobicity of OVT fibrils was higher than OVT spheres due to the acid-heat treatment. The exploration of liquid-liquid interface behaviors indicated that OVT fibrils possessed higher adsorption capacity at the interface, revealing the higher surface activity at the oil-water interface. During adsorption process, fibrils exhibited higher diffusion rate, while spheres were easier to penetrate and rearrange at the interface. The interfacial film composed of fibrils possessed more elastic solid-like behaviors owing to the higher surface activity of individual fibrous aggregates and rapid fibril-fibril interactions. The analysis of gas-liquid interface characteristics presented that OVT spheres possessed lower interfacial tension and higher interfacial viscoelasticity, and showed significantly higher FC and FS values in comparation to fibrils. These findings will facilitate the reader's understanding of the relationship between protein aggregate structure and properties, and lay a foundation for broadening the application of OVT and even other proteins.
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Affiliation(s)
- Qi Zhou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Ziyuan Xu
- School of Basic Medical Sciences, Weifang Medical University, Weifang 261053, China
| | - Zihao Wei
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China.
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2
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Wang X, Hu G, Wang X, Ma L, Li S, Wang J, Geng F. Quantitative proteomics provides new insights into the mechanism of improving rehydration of egg white powder by ultrasonic pretreatment. Int J Biol Macromol 2023; 253:127497. [PMID: 37858647 DOI: 10.1016/j.ijbiomac.2023.127497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023]
Abstract
Poor rehydration is one of the key factors affecting the functional properties of egg white powder (EWP). Reducing rehydrated precipitates is important for the processing and application of EWP. In this study, effects of ultrasonic pretreatment on the physicochemical and functional properties of EWP rehydration solutions were studied with the aim of revealing the mechanism of ultrasonic pretreatment to improve rehydration. Compared with freeze-dried EWP (FD) and spray-dried EWP (SD), the percentage of ultrasonic pretreated FD (UFD) and ultrasonic pretreated SD (USD) rehydrated precipitates decreased by 13.0 % and 5.6 %, respectively, after ultrasonic pretreatment (0.25 W/mL for 10 min); and the average particle sizes of UFD and USD solutions decreased by 22.5 % and 15.5 %, respectively. Fourier transform infrared spectroscopy showed that ultrasonic pretreatment caused higher β-sheet content in the protein secondary structure of UFD rehydrated precipitates (49.2 %). Quantitative proteomic analysis revealed a decrease in the abundance of major egg white proteins (ovalbumin, ovotransferrin, ovomucoid and ovomucin) in the rehydrated precipitates of UFD, except for lysozyme. It was also shown that lysozyme-centered aggregates were disrupted in the rehydrated precipitates of UFD. Our research suggests that ultrasonic pretreatment improves EWP rehydration by reducing the interactions between high abundance proteins as well as improving the solubility of high abundance proteins.
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Affiliation(s)
- Xiaolin Wang
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, No. 2025 Chengluo Avenue, Chengdu 610106, China
| | - Gan Hu
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, No. 2025 Chengluo Avenue, Chengdu 610106, China
| | - Xuemei Wang
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, No. 2025 Chengluo Avenue, Chengdu 610106, China
| | - Lulu Ma
- Engineering Research Center of Bio-process (Ministry of Education), Key Laboratory for Agricultural Products Processing of Anhui Province, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Shugang Li
- Engineering Research Center of Bio-process (Ministry of Education), Key Laboratory for Agricultural Products Processing of Anhui Province, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Jinqiu Wang
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, No. 2025 Chengluo Avenue, Chengdu 610106, China
| | - Fang Geng
- Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, No. 2025 Chengluo Avenue, Chengdu 610106, China.
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3
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Huang X, Cui Y, Shi L, Yang S, Qiu X, Hao G, Zhao Y, Liu S, Liu Z, Weng W, Ren Z. Structural properties and emulsification of myofibrillar proteins from hairtail (Trichiurus haumela) at different salt ions. Int J Biol Macromol 2023; 253:127598. [PMID: 37879582 DOI: 10.1016/j.ijbiomac.2023.127598] [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: 08/30/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 10/27/2023]
Abstract
The structural properties and emulsification of myofibrillar proteins (MPs) are susceptibly affected by salt ions. The effect of different salt ions on the structural properties and emulsification of MPs from hairtail (Trichiurus haumela) remains unclear. Hairtail MPs were analyzed under different ion treatments of Na+, K+, Ca2+ and Mg2+. MPs at K+ and Na+ treatment showed a similar trend on salt effect due to the unfolding of proteins under salt ions. However, the excessive electrostatic effect of divalent ions could enhance protein aggregation, especially at Ca2+ and Mg2+. The β-sheet of MPs at different salt ions interconverted with α-helix and random coil at ionic strengths from 0.1 mol/L to 1.0 mol/L. The surface hydrophobicity and active sulfhydryl content of MPs increased with the improvement of ionic strengths at 0-0.8 mol/L. Under Ca2+ and Mg2+ treatments, the turbidity of MPs was low compared to that under the treatment of Na+ and K+. Additionally, the emulsification of hairtail MPs treated with different ions was improved at an ionic strength of 0.6 mol/L. This study can contribute to using salts in constructing fish protein-based emulsions for manufacturing emulsified surimi products and promoting the development and utilization of hairtail proteins.
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Affiliation(s)
- Xianglan Huang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yaqing Cui
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Linfan Shi
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, China
| | - Shen Yang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Xujian Qiu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Gengxin Hao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yongqiang Zhao
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of The People's Republic of China, National R&D Center for Aquatic Product Processing, South China Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
| | - Shuji Liu
- Fisheries Research Institute of Fujian, Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resource, Xiamen 361013, China
| | - Zhiyu Liu
- Fisheries Research Institute of Fujian, Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resource, Xiamen 361013, China
| | - Wuyin Weng
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, China.
| | - Zhongyang Ren
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, China.
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Zhang H, Zhang W, Xu X, Zhao X. Aggregate Size Modulates the Oil/Water Interfacial Behavior of Myofibrillar Proteins: Toward the Thicker Interface Film and Disulfide Bond. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:17782-17797. [PMID: 38033267 DOI: 10.1021/acs.langmuir.3c02394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Myofibrillar protein (MP) aggregate models have been established to elucidate the correlation between their aggregate sizes and interfacial properties. The interfacial layer thickness was measured by the polystyrene latex method and quartz crystal microbalance with dissipation measurement. Interfacial conformations were then characterized in situ (front-surface fluorescence spectroscopy) and ex situ (reactive sulfhydryl group and secondary structure measurement following MP displacement). The viscoelasticity of the interfacial film and its resistance to surfactant-induced competitive displacement were reflected by the dilatational rheology and dynamic interfacial tension with the bulk phase exchange. Finally, we compared the findings of competitive displacement before/after adding a sulfhydryl-blocking agent, N-ethylmaleimide, to highlight the role of S-S linkage on interfacial film formation and stability. We substantiated that the aggregate size of the MP governed their interfacial properties. Small-sized aggregates exhibited more ordered secondary structures on the oil-water interface, which was conducive to the adsorption ratio of the protein and the adsorption dynamics. Although larger aggregates lowered the diffusion rate during interfacial film formation, they allowed the thicker and more viscoelastic interfacial film to be constructed afterward through more disulfide bond formation, resulting in greater resistance to surfactant-induced competitive displacement.
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Affiliation(s)
- Haozhen Zhang
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, Ministry of Education; Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; College of Food Science and Technology; Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Weiyi Zhang
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, Ministry of Education; Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; College of Food Science and Technology; Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Xinglian Xu
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, Ministry of Education; Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; College of Food Science and Technology; Nanjing Agricultural University, Nanjing 210095, P. R. China
| | - Xue Zhao
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, Ministry of Education; Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; College of Food Science and Technology; Nanjing Agricultural University, Nanjing 210095, P. R. China
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5
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Wang K, Liu H, Sun J. Improved gelling and emulsifying properties of chicken wooden breast myofibrillar protein by high-intensity ultrasound combination with pH-shifting. Poult Sci 2023; 102:103063. [PMID: 37734357 PMCID: PMC10518579 DOI: 10.1016/j.psj.2023.103063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/19/2023] [Accepted: 08/22/2023] [Indexed: 09/23/2023] Open
Abstract
The functional properties of chicken wooden breast myofibrillar protein (WBMP) are impaired. The protein structure and functional properties of WBMP are investigated using high-intensity ultrasound (HIU, 20 kHz, 200, 400, 600, and 800 W) combined with pH-shifting. HIU promoted the unfolding of WBMP, reduced the particle size of WBMP, and enhanced electrostatic repulsion. Medium-power (200 and 400 W) HIU promoted the α-helix to β-sheet transformation, while high-power (600 and 800 W) HIU significantly (P < 0.05) increased the content of the random coil. The microstructure and images after storage further showed that 400 W HIU in combination with pH-shifting made the WBMP emulsion more uniform. In addition, gel performance analysis showed that the gel strength and water-holding capacity of the protein gel increased gradually after 400 W. Scanning electron microscope images also showed the formation of a stable network structure in the protein gel. This work could help promote the utilization of inferior proteins similar to WBMP, but the utilization rate still needs to be further improved.
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Affiliation(s)
- Ke Wang
- College of Food Science & Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Huan Liu
- College of Food Science & Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Jingxin Sun
- College of Food Science & Engineering, Qingdao Agricultural University, Qingdao 266109, China; Shandong Research Center for Meat Food Quality Control, Qingdao Agricultural University, Qingdao 266109, China.
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Chen J, Chai J, Sun X, Tao Y, Chen X, Zhou G, Xu X. Unexpected variations in the effects of ultrasound-assisted myofibrillar protein processing under varying viscosity conditions. ULTRASONICS SONOCHEMISTRY 2023; 99:106553. [PMID: 37574643 PMCID: PMC10448329 DOI: 10.1016/j.ultsonch.2023.106553] [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: 05/23/2023] [Revised: 07/30/2023] [Accepted: 08/05/2023] [Indexed: 08/15/2023]
Abstract
The efficient synthesis of myofibrillar protein(MRN)-gallic acid (GAD) complex in ultrasound (UID)-assisted processing is a challenging problem in food manufacturing. In this investigation, the effect of viscosity characteristics on the efficiency of UID processing in MRN-based beverages was analyzed. Both viscosity and surface tension can increase sono-physico-chemical effects on the degradation of terephthalic acid and crystal violet, with surface tension having a more significant effect (negative correlation, R2 = 0.99) than viscosity (positive correlation, R2 = 0.79). The structural indicators and microstructure demonstrated that the reaggregation and refolding of the MRN structure during the modification procedure occurred with relatively small three-dimensional dimensions. Compared to the MRN/GAD4 group, the water contact angle of the MRN/GAD7 system enhanced by 129.44%, leading to greater system stability. The ABTS-scavenging capacity of the system increased by approximately 19.45% due to the increase in viscosity of these two categories.
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Affiliation(s)
- Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiale Chai
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaomei Sun
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ye Tao
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xing Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Guanghong Zhou
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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7
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Zhang Y, Liu G, Xie Q, Wang Y, Yu J, Ma X. Physicochemical and structural changes of myofibrillar proteins in muscle foods during thawing: Occurrence, consequences, evidence, and implications. Compr Rev Food Sci Food Saf 2023; 22:3444-3477. [PMID: 37306543 DOI: 10.1111/1541-4337.13194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/13/2023]
Abstract
Myofibrillar protein (MP) endows muscle foods with texture and important functional properties, such as water-holding capacity (WHC) and emulsifying and gel-forming abilities. However, thawing deteriorates the physicochemical and structural properties of MPs, significantly affecting the WHC, texture, flavor, and nutritional value of muscle foods. Thawing-induced physicochemical and structural changes in MPs need further investigation and consideration in the scientific development of muscle foods. In this study, we reviewed the literature for the thawing effects on the physicochemical and structural characters of MPs to identify potential associations between MPs and the quality of muscle-based foods. Physicochemical and structural changes of MPs in muscle foods occur because of physical changes during thawing and microenvironmental changes, including heat transfer and phase transformation, moisture activation and migration, microbial activation, and alterations in pH and ionic strength. These changes are not only essential inducements for changes in spatial conformation, surface hydrophobicity, solubility, Ca2+ -ATPase activity, intermolecular interaction, gel properties, and emulsifying properties of MPs but also factors causing MP oxidation, characterized by thiols, carbonyl compounds, free amino groups, dityrosine content, cross-linking, and MP aggregates. Additionally, the WHC, texture, flavor, and nutritional value of muscle foods are closely related to MPs. This review encourages additional work to explore the potential of tempering techniques, as well as the synergistic effects of traditional and innovative thawing technologies, in reducing the oxidation and denaturation of MPs and maintaining the quality of muscle foods.
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Affiliation(s)
- Yuanlv Zhang
- College of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Guishan Liu
- College of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Qiwen Xie
- College of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Yanyao Wang
- College of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Jia Yu
- College of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Xiaoju Ma
- College of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
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Gao Q, Chen J, Zhou G, Xu X. Different protein-anthocyanin complexes engineered by ultrasound and alkali treatment: Structural characterization and color stability. Food Chem 2023; 427:136693. [PMID: 37390735 DOI: 10.1016/j.foodchem.2023.136693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/07/2023] [Accepted: 06/18/2023] [Indexed: 07/02/2023]
Abstract
Through alkali treatment (AT) and ultrasound (UT)-assisted processing producing covalent protein-anthocyanin complexes, we investigated the impact of treatment methods and protein types on conjugation efficiency, protein structure, and color stability. Our findings revealed the effective grafting of anthocyanins (ACNs) onto proteins, with myofibrillar protein (MP) exhibiting the highest conjugation efficiency of 88.33% after UT (p <.05). UT accelerated the structure unfolding of distinct protein samples, leading to the exposure of sulfhydryl, and hydrophobic groups in proteins, and enhanced the oxidation stability of ACNs. Notably, the modified ACNs maintained a favorable pH-color relationship, while U-MP showed a significantly higher absorbance (0.4998) than the other groups (p <.05) at pH 9.0, demonstrating an outstanding color improvement. UT-assisted processing also accelerated the NH3 reaction. Thus, the combination of UT and MP holds the potential for pH-color-responsive intelligent packaging and increases the efficiency of UT processing.
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Affiliation(s)
- Qianni Gao
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Guanghong Zhou
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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9
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Zhang Z, Shi W, Wang Y, Meng X, Dabbour M, Kumah Mintah B, Chen X, Chen X, He R, Ma H. Mono-frequency ultrasonic-assisted thawing of frozen goose meat: Influence on thawing efficiency, product quality and microstructure. ULTRASONICS SONOCHEMISTRY 2023; 98:106489. [PMID: 37354765 PMCID: PMC10320251 DOI: 10.1016/j.ultsonch.2023.106489] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 06/05/2023] [Accepted: 06/11/2023] [Indexed: 06/26/2023]
Abstract
This study aimed to investigate the influences of mono-ultrasound assisted thawing on the thawing efficiency, product quality and conformational characteristics of frozen goose meat. The thawing time, thawing loss, muscle quality, and microstructure of frozen goose meat were studied. The results displayed that ultrasonic-assisted thawing effectively reduced the thawing time by 45.37-57.58% compared with non-sonicated group, and significantly decreased the thawing loss. For the quality properties of goose meat tissue, ultrasound-assisted thawing with single-frequency of 50 kHz indicated a lower protein turbidity; meanwhile, hardness values were also significantly increased, and displayed a higher springiness, gumminess and chewiness of goose meat tissue. The microstructure analysis exhibited that the conformation of goose myofibrillar protein (MP) was modified following ultrasonic-assisted thawing, and became closer and more irregular. Therefore, ultrasound-assisted thawing treatments at 50 kHz mono-frequency (temperature 25℃) have a high potential application value in the thawing research of frozen goose meat, and lay a theoretical foundation for use in the meat process industries.
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Affiliation(s)
- Zhaoli Zhang
- College of Tourism and Culinary Science, Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, Ministry of Culture and Tourism, Yangzhou University, Yangzhou, Jiangsu 225127, China; Cuisine Science Key Laboratory of Sichuan Province, Sichuan Tourism University, Chengdu 610100, China
| | - Wangbin Shi
- College of Tourism and Culinary Science, Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, Ministry of Culture and Tourism, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Yang Wang
- College of Tourism and Culinary Science, Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, Ministry of Culture and Tourism, Yangzhou University, Yangzhou, Jiangsu 225127, China; College of Food Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China.
| | - Xiangren Meng
- College of Tourism and Culinary Science, Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, Ministry of Culture and Tourism, Yangzhou University, Yangzhou, Jiangsu 225127, China.
| | - Mokhtar Dabbour
- Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Qaluobia, Egypt
| | | | - Xingyu Chen
- College of Tourism and Culinary Science, Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, Ministry of Culture and Tourism, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Xi Chen
- College of Tourism and Culinary Science, Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, Ministry of Culture and Tourism, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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Tao Y, Wang P, Xu X, Chen J, Huang M, Zhang W. Effects of ultrasound treatment on the morphological characteristics, structures and emulsifying properties of genipin cross-linked myofibrillar protein. ULTRASONICS SONOCHEMISTRY 2023; 97:106467. [PMID: 37290150 DOI: 10.1016/j.ultsonch.2023.106467] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 04/20/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023]
Abstract
Genipin is a natural crosslinker that improves the functional properties of proteins by modifying its structures. This study aimed to investigate the effects of sonication on the emulsifying properties of different genipin concentration-induced myofibrillar protein (MP) cross-linking. The structural characteristics, solubility, emulsifying properties, and rheological properties of genipin-induced MP crosslinking without sonication (Native), sonication before crosslinking (UMP), and sonication after crosslinking (MPU) treatments were determined, and the interaction between genipin and MP were estimated by molecular docking. The results demonstrated that hydrogen bond might be the main forces for genipin binding to the MP, and 0.5 μM/mg genipin was a desirable concentration for protein cross-linking to improve MP emulsion stability. Ultrasound treatment before and after crosslinking were better than Native treatment to improve the emulsifying stability index (ESI) of MP. Among the three treatment groups at the 0.5 μM/mg genipin treatment, the MPU treatment group showed the smallest size, most uniform protein particle distribution, and the highest ESI (59.89%). Additionally, the highest α-helix (41.96%) in the MPU + G5 group may be conducive to the formation of a stable and multilayer oil-water interface. Furthermore, the free groups, solubility, and protein exposure extent of the MPU groups were higher than those of UMP and Native groups. Therefore, this work suggests that the treatment of cross-linking followed by ultrasound (MPU) could be a desirable approach for improving the emulsifying stability of MP.
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Affiliation(s)
- Ye Tao
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Peng Wang
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China.
| | - Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Mingyuan Huang
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Weiyi Zhang
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
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Chen J, Zeng X, Chai J, Zhou G, Xu X. Improvement of the emulsifying properties of mixed emulsifiers by optimizing ultrasonic-assisted processing. ULTRASONICS SONOCHEMISTRY 2023; 95:106397. [PMID: 37044021 PMCID: PMC10119801 DOI: 10.1016/j.ultsonch.2023.106397] [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: 02/20/2023] [Revised: 03/21/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Optimizing ultrasound (ULD)-assisted flavonoid modification is an important component of enhancing its application potential. In this work, diverse flavonoids, such as quercetin (Que), apigenin (Api), and morin (Mor), were used to modify protein in myofibrillar protein (MP)/cellulose nanocrystal (CN) complexes using ULD-assisted method. Compared with the MP/CNs group, the triiodide contents of MP-Que/CNs, MP-Api/CNs, and MP-Mor/CNs increased by 1175.84%, 479.05%, and 2281.50% respectively. The findings revealed that the actual intensity of ULD was drastically reduced by the molecular weight decrease of these flavonoids. For olive oil emulsions prepared with mixed emulsifiers, the low interfacial diffusion rates (0.03 mN·m·s-1/2) and weak emulsifying activity (8.33 m2/g) of the MP/CN complexes were significantly improved by the flavonoids after ULD-assisted treatment. Notably, the emulsions prepared using MP-Api/CNs contained smaller oil droplets and exhibited better emulsifying properties, compared to emulsions prepared with MP-Mor/CNs or MP-Que/CNs. This study is essential for ULD-assisted treatment since the processing impact may be increased by choosing the most suitable flavonoid.
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Affiliation(s)
- Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xianming Zeng
- Key Laboratory of Meat Processing, Ministry of Agriculture, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiale Chai
- Key Laboratory of Meat Processing, Ministry of Agriculture, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Guanghong Zhou
- Key Laboratory of Meat Processing, Ministry of Agriculture, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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12
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Tan M, Ding Z, Chu Y, Xie J. Potential of Good's buffers to inhibit denaturation of myofibrillar protein upon freezing. Food Res Int 2023; 165:112484. [PMID: 36869497 DOI: 10.1016/j.foodres.2023.112484] [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: 10/12/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023]
Abstract
The current systematic study sought to examine the potential use of three Good's buffers (MES, MOPS and HEPES) in inhibiting myofibrillar protein (MFP) denaturation induced by acidity changes. The highest degree of acidity variation was found in the center and bottom of large bottles due to the freeze-concentration effect. Good's buffer tended to basify during freezing, and it could prevent the crystallization of sodium phosphate (Na-P) buffer. Acidification upon freezing Na-P disrupted the natural conformation of MFP and induced the formation of large proteins aggregates with tight packing. The 15 mM MES, 20 mM MOPS, and 30 mM HEPES were respectively added to neutralize the strong acidity drop induced by freezing 20 mM Na-P, and all of them significantly improved the stability of the MFP conformation (P < 0.05). This work is not only critical to meet the growing demand for protein, but also groundbreaking for broadening the applicability of Good's buffers in the food industry.
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Affiliation(s)
- Mingtang Tan
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Zhaoyang Ding
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquatic Product Processing & Preservation, Shanghai 201306, China; Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, China.
| | - Yuanming Chu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquatic Product Processing & Preservation, Shanghai 201306, China; Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China; National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, China; Collaborative Innovation Center of Seafood Deep Processing, Ministry of Education, Dalian 116034, China.
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13
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Yan X, Jia Y, Man H, Sun S, Huang Y, Qi B, Li Y. Tracking the driving forces for the unfolding and folding of kidney bean protein isolates: Revealing mechanisms of dynamic changes in structure and function. Food Chem 2023; 402:134230. [DOI: 10.1016/j.foodchem.2022.134230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 08/28/2022] [Accepted: 09/11/2022] [Indexed: 11/16/2022]
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14
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Tan C, Xu QD, Chen N, He Q, Zeng WC. Cross-Linking Modifications of Different Phenolic Compounds on Myofibrillar Protein of Common Carp. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02958-2] [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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15
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Wang B, Wang P, Xu X, Zhou G. Structural transformation of egg white protein particles modified by preheating combined with pH-shifting: Mechanism of enhancing heat stability. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Application of ultrasound-assisted alkaline extraction for improving the solubility and emulsifying properties of pale, soft, and exudative (PSE)-like chicken breast meat protein isolate. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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17
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Regulation mechanism of nanocellulose with different morphologies on the properties of low-oil gelatin emulsions: Interfacial adsorption or network formation? Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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18
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Li Y, Xu Y, Xu X, Zeng X, Zhou G. Explore the mechanism of continuous cyclic glycation in affecting the stability of myofibrillar protein emulsion: The influence of pH. Food Res Int 2022; 161:111834. [DOI: 10.1016/j.foodres.2022.111834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/04/2022]
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19
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Food protein aggregation and its application. Food Res Int 2022; 160:111725. [DOI: 10.1016/j.foodres.2022.111725] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/29/2022] [Accepted: 07/19/2022] [Indexed: 01/31/2023]
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20
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Continuous cyclic wet heating glycation to prepare myofibrillar protein-glucose conjugates: A study on the structures, solubility and emulsifying properties. Food Chem 2022; 388:133035. [PMID: 35483289 DOI: 10.1016/j.foodchem.2022.133035] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 04/11/2022] [Accepted: 04/19/2022] [Indexed: 11/22/2022]
Abstract
Myofibrillar protein (MP) is often modified by various strategies to obtain better functional properties, which are crucial to the quality of meat products. This study prepared MP-glucose conjugates with high degrees of grafting (DG) by continuous cyclic wet heating glycation, and explored the changes in the structural and functional properties. The determination of DG, amino acid contents and Fourier transform infrared spectroscopy (FT-IR) confirmed the occurrence of glycation. The conjugates lost α-helix structures, and their intrinsic fluorescence intensity decreased while their surface hydrophobicity increased, which reflected the conformational unfolding and stretching behaviour of the molecules. Glycation resulted in a smaller particle size and lower ζ-potential, delaying molecular cross-linking during heating, thereby significantly reducing the apparent viscosity of the solutions and improving the solubility and emulsifying properties of MP. The results can provide new ideas and approaches for understanding glycation, and enrich the theoretical basis of the structure-function relationship of MP.
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21
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Ren Z, Cui Y, Wang Y, Shi L, Yang S, Hao G, Qiu X, Wu Y, Zhao Y, Weng W. Effect of ionic strength on the structural properties and emulsion characteristics of myofibrillar proteins from hairtail (Trichiurus haumela). Food Res Int 2022; 157:111248. [DOI: 10.1016/j.foodres.2022.111248] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/08/2022] [Accepted: 04/09/2022] [Indexed: 01/20/2023]
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22
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Chen X, Chen K, Cheng H, Liang L. Soluble Aggregates of Myofibrillar Proteins Engineered by Gallic Acid: Colloidal Structure and Resistance to In Vitro Gastric Digestion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4066-4075. [PMID: 35285231 DOI: 10.1021/acs.jafc.1c05840] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Myofibrillar protein (MP)-soluble aggregates can be made by tactics of gallic acid (GA) modification during pH shifting, and this work aimed to disclose their aggregation pattern and in vitro digestion behavior. GA modification dissociated the filamentous structure of myofibrils and caused structural reassembly to form small-sized aggregates. These aggregates were evidenced to contain GA-bridged dimers and oligomers of myosin or actin, having a molecular weight of ∼1225 kDa. Additionally, the structural rearrangement significantly decreased the surface hydrophobicity while substantially increased the surface charge. As a result, the obtained colloidal solution was translucent and heat-resistant. Intriguingly, MP-soluble aggregates exhibited a retarded digestive behavior. Further evaluation by a quartz crystal microbalance suggested that the reduced binding affinity of soluble aggregates toward gastric pepsin could be the underlying reason. This work may foster the engineering advances of modulating the MP structure-digestion for the tailor manufacturing of muscle protein-based beverages.
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Affiliation(s)
- Xing Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Kaiwen Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hao Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Li Liang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
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23
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Recovery of emulsifying and gelling protein from waste chicken exudate by using a sustainable pH-shifting treatment. Food Chem 2022; 387:132886. [PMID: 35397270 DOI: 10.1016/j.foodchem.2022.132886] [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: 11/30/2021] [Revised: 03/27/2022] [Accepted: 04/01/2022] [Indexed: 11/22/2022]
Abstract
The inevitably generated chicken exudate was usually unconsciously discarded, leading to protein waste and environmental pollution. The study is performed to reveal the loss and constitute of different sourced exudate (purge exudate/defrozen exudate, PE/DE), investigate the efficiency of various pH-shifting strategies (Method I: NaOH-HCl, Method II: Ca(OH)2-Critric acid, and Method III: Ca(OH)2-Glucono δ-lactone) in recovering selected exudate, and evaluate the functionality of these recovered protein isolates. Accordingly, PE and DE shared greatly similar (P > 0.05) lipid and ash content. Despite sarcoplasmic protein, there are a small amount of functional myofibrillar protein in the exudate samples. During extraction, Method III had higher recovery yield (85.5%) than other two groups, but the isolates contained higher level of moisture. The protein isolates treated with Method II exhibited highest emulsion ability, while the Method III treated group obtained best gelation properties. Overall, pH-shifting could recover functional protein from chicken exudate for industrial application.
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24
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Role of partial replacement of NaCl by KCl combined with other components on structure and gel properties of porcine myofibrillar protein. Meat Sci 2022; 190:108832. [DOI: 10.1016/j.meatsci.2022.108832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/25/2022] [Accepted: 04/26/2022] [Indexed: 11/24/2022]
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25
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Influence of Proteolysis on the Binding Capacity of Flavor Compounds to Myofibrillar Proteins. Foods 2022; 11:foods11060891. [PMID: 35327313 PMCID: PMC8955031 DOI: 10.3390/foods11060891] [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: 01/18/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 12/10/2022] Open
Abstract
Proteolysis occurs extensively during postmortem aging, enzymatic tenderization and fermentation of meat products, whereas less is understood regarding how proteolysis affects meat flavor. Myofibrillar proteins (MP) were extracted from beef longissimus dorsi muscle and subsequently treated with three commercial proteases. The effect of proteolysis on the interactions between the treated MP and butyraldehyde, 2-pentanone, octanal and 2-octanone was investigated. The progress of proteolysis increased the degree of hydrolysis (DH) and the surface hydrophobicity but decreased the turbidity and particle size. Fluorescence-quenching analysis results indicated that the enzymatic treatment generally increased the quenching constant (Ksv) between the treated MP and ketones but decreased the Ksv between the treated MP and aldehydes, and the papain treatment changed the Ksv value to a larger degree than treatment with proteinase K and bromelain. The adsorption assay showed that the proteinase K treatment largely increased the adsorption capacity of the MP to octanal (by 15.8−19.3%), whereas the bromelain treatment significantly reduced the adsorption capacity of the treated MP to butyraldehyde (by 6.0−7.9%) and 2-pentanone (by 9.7−11.9%). A correlation analysis demonstrated a strong positive correlation (0.859, p < 0.05) between the DH of the MP and the adsorption ability of the treated MP to octanal. This study highlighted the significant but complex influence of proteolysis on MP binding capacity to flavor compounds.
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26
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Chen J, Chen X, Zhou G, Xu X. New insights into the ultrasound impact on covalent reactions of myofibrillar protein. ULTRASONICS SONOCHEMISTRY 2022; 84:105973. [PMID: 35272240 PMCID: PMC8913343 DOI: 10.1016/j.ultsonch.2022.105973] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/18/2022] [Accepted: 03/01/2022] [Indexed: 05/06/2023]
Abstract
In this work, two different covalent reactions, namely, alkaline reaction and free radical oxidation, were selected to compare the difference in the strengthening effects of ultrasound treatment (UDT). The grafting effects were verified by protein electrophoresis and bound gallic acid (GA) assay. Furthermore, non-covalent interactions between myofibrillar protein (MPN) aggregates were destroyed by UDT, as proved by the lower particle sizes and higher ζ-potential. Comparatively, the results from tertiary structure index and circular dichroism revealed UDT-assisted free radical oxidation could lead to better conjugates with greater structural properties. The atomic force microscope (AFME) and protein flexibility showed that MPNs appeared to display as irregular spherical particles after alkaline reaction, however, maintained fibrous structure during the free radical oxidation. Consequently, the combination of UDT and free radical oxidation were more effectively for strengthening the influence of acoustic cavitation on MPNs, of which mechanism was the changes in viscosity properties, microstructure and acoustic cavitation radicals.
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Affiliation(s)
- Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xing Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Guanghong Zhou
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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27
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Mechanisms of Change in Emulsifying Capacity Induced by Protein Denaturation and Aggregation in Quick-Frozen Pork Patties with Different Fat Levels and Freeze-Thaw Cycles. Foods 2021; 11:foods11010044. [PMID: 35010168 PMCID: PMC8750440 DOI: 10.3390/foods11010044] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/27/2021] [Accepted: 12/09/2021] [Indexed: 01/16/2023] Open
Abstract
Herein, we discuss changes in the emulsifying properties of myofibrillar protein (MP) because of protein denaturation and aggregation from quick-frozen pork patties with multiple fat levels and freeze–thaw (F–T) cycles. Protein denaturation and aggregation were confirmed by the significantly increased surface hydrophobicity, turbidity, and particle size, as well as the significantly decreased solubility and absolute zeta potential, of MPs with increases in fat levels and F–T cycles (p < 0.05). After multiple F–T cycles, the emulsifying activity and emulsion stability indices of all samples were significantly reduced (p < 0.05). The emulsion droplets of MP increased in size, and their distributions were dense and irregular. The results demonstrated that protein denaturation and aggregation due to multiple F–T cycles and fat levels changed the distribution of surface chemical groups and particle sizes of protein, thus affecting the emulsifying properties.
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