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Zhai Y, Peng W, Luo W, Wu J, Liu Y, Wang F, Li X, Yu J, Wang S. Component stabilizing mechanism of membrane-separated hydrolysates on frozen surimi. Food Chem 2024; 431:137114. [PMID: 37595381 DOI: 10.1016/j.foodchem.2023.137114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/01/2023] [Accepted: 08/05/2023] [Indexed: 08/20/2023]
Abstract
This study investigated the cryoprotective mechanism of ultrafiltration membrane-separated fractions (>10 kDa, UF-1; 3-10 kDa, UF-2; and <3 kDa, UF-3) derived from silver carp hydrolysates on frozen surimi. The surimi gel incorporating UF-3 exhibited a compact, continuous structure with uniform pores, even after undergoing six freeze-thaw (F-T) cycle, with the minimal reduction in entrapped water (from 95.1 % to 91.1 %) and least increase in free water (from 4.5 % to 6.6 %) as revealed by SEM and LF-NMR analysis. Through molecular docking analysis, three major peptides in UF-3 were identified to form robust interactions with the myosin head pocket, facilitated by hydrogen bonds, electrostatic forces, and hydrophobic interactions. Furthermore, molecular dynamics simulations demonstrated that the three peptides effectively prevented myosin from unfolding and aggregating by tightly binding to basic amino acids (Arg, Lys) and hydrophobic amino acids (Phe, Leu, Ile, Met, and Val) residues in the myosin head pocket, primarily governed by electrostatic energies (-156.95, -321.38, and -267.53 kcal/mol, respectively) and van der Waals energies (-395.05, -347.46, and -319.16 kcal/mol, respectively). Notably, the key action site was identified as Lys599 on myosin. The hydrophilic and hydrophobic hotspot residues of the peptides worked synergistically to stabilize the myosin structure in frozen surimi.
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Affiliation(s)
- Yueying Zhai
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, Hunan Province, China; Hunan Provincial Engineering Technology Research Center of Aquatic Food Resources Processing, Changsha 410114, Hunan Province, China
| | - Wanqi Peng
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, Hunan Province, China
| | - Wei Luo
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, Fujian Province, China
| | - Jinhong Wu
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yongle Liu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, Hunan Province, China; Hunan Provincial Engineering Technology Research Center of Aquatic Food Resources Processing, Changsha 410114, Hunan Province, China
| | - Faxiang Wang
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, Hunan Province, China; Hunan Provincial Engineering Technology Research Center of Aquatic Food Resources Processing, Changsha 410114, Hunan Province, China
| | - Xianghong Li
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, Hunan Province, China; Hunan Provincial Engineering Technology Research Center of Aquatic Food Resources Processing, Changsha 410114, Hunan Province, China.
| | - Jian Yu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, Hunan Province, China; Hunan Provincial Engineering Technology Research Center of Aquatic Food Resources Processing, Changsha 410114, Hunan Province, China
| | - Shaoyun Wang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, Fujian Province, China.
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Nikoo M, Regenstein JM, Yasemi M. Protein Hydrolysates from Fishery Processing By-Products: Production, Characteristics, Food Applications, and Challenges. Foods 2023; 12:4470. [PMID: 38137273 PMCID: PMC10743304 DOI: 10.3390/foods12244470] [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: 11/27/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Fish processing by-products such as frames, trimmings, and viscera of commercial fish species are rich in proteins. Thus, they could potentially be an economical source of proteins that may be used to obtain bioactive peptides and functional protein hydrolysates for the food and nutraceutical industries. The structure, composition, and biological activities of peptides and hydrolysates depend on the freshness and the actual composition of the material. Peptides isolated from fishery by-products showed antioxidant activity. Changes in hydrolysis parameters changed the sequence and properties of the peptides and determined their physiological functions. The optimization of the value of such peptides and the production costs must be considered for each particular source of marine by-products and for their specific food applications. This review will discuss the functional properties of fishery by-products prepared using hydrolysis and their potential food applications. It also reviews the structure-activity relationships of the antioxidant activity of peptides as well as challenges to the use of fishery by-products for protein hydrolysate production.
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Affiliation(s)
- Mehdi Nikoo
- Department of Pathobiology and Quality Control, Artemia and Aquaculture Research Institute, Urmia University, Urmia 57179-44514, Iran
| | - Joe M. Regenstein
- Department of Food Science, Cornell University, Ithaca, NY 14853-7201, USA;
| | - Mehran Yasemi
- Department of Fisheries, Institute of Agricultural Education and Extension, Agricultural Research, Education, and Extension Organization (AREEO), Tehran 19858-13111, Iran;
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Shen Z, Gao H, Peng W, Wang F, Liu Y, Wu J, Wang S, Li X. Cryoprotective effect of soybean oil on surimi gels and the mechanism based on molecular dynamics simulation. J Texture Stud 2023. [PMID: 37968073 DOI: 10.1111/jtxs.12812] [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: 08/11/2023] [Revised: 09/18/2023] [Accepted: 10/19/2023] [Indexed: 11/17/2023]
Abstract
The effect of soybean oil (SO) on freeze-thaw (F-T)-treated surimi was investigated and its related mechanism was revealed by molecular dynamics (MD) simulations. The results displayed that SO has a disrupting effect on the structure of fresh samples. However, in the F-T-treated samples, surimi gels supplemented with SO had a more uniform microstructure. Simultaneously, when SO was added from 0% to 7% in the F-T-treated samples, the gel strength increased from46.66 to 51.86 N · mm $$ 46.66\ \mathrm{to}\ 51.86\;\mathrm{N}\cdotp \mathrm{mm} $$ (p < .05), the physically bound water was increased from 92.90% to 94.15% (p < .05), and storage modulus was increased from 5939 to 6523 Pa. Triglycerides of SO generated hydrophobic interactions with myosin mainly in carbon chains. Computational results from MD simulations illustrated that the structure of myosin combined with triglycerides was more stable than that of myosin alone during temperature fluctuations (-20 to 4°C). During ice crystal growth, triglycerides absorbed on the myosin surface inhibited the growth of surrounding ice crystals and mitigated the ice crystal growth rate (from 7.54 to 5.99 cm/s). The addition of SO during the F-T treatments allowed myosin to be less negatively affected by ice crystal formation and temperature fluctuations and ultimately contributed to the formation of a more uniform network gel structure.
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Affiliation(s)
- Zhiwen Shen
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan Province, China
| | - Huaqian Gao
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan Province, China
| | - Wanqi Peng
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan Province, China
| | - Faxiang Wang
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan Province, China
- Hunan Provincial Engineering Technology Research Center of Aquatic Food Resources Processing, Changsha, Hunan Province, China
| | - Yongle Liu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan Province, China
- Hunan Provincial Engineering Technology Research Center of Aquatic Food Resources Processing, Changsha, Hunan Province, China
| | - Jinhong Wu
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Shaoyun Wang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian Province, China
| | - Xianghong Li
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan Province, China
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