1
|
Yin Y, Xing L, Zhang W. Moderate Protein Oxidation Improves Bovine Myofibril Digestibility by Releasing Peptides in the S2 Region of Myosin: A Peptidomics Perspective. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2514-2522. [PMID: 36703551 DOI: 10.1021/acs.jafc.2c07708] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
This study aimed to investigate the influence of protein oxidation on the digestive properties of beef myofibrillar protein (MP). MP was treated with a hydroxyl radical-generating system containing various concentrations of H2O2. The increased content in a free sulfhydryl group and surface hydrophobicity indicated that oxidation treatment with 1 mM H2O2 induced unfolding of MP. Reducing and nonreducing SDS-PAGE results suggested that 10 mM H2O2 oxidation treatment resulted in aggregation of MP; meanwhile, the disulfide bond was the major covalent bond involved in aggregation. Peptidomics showed that peptides in the digestion products of MP were mainly derived from myosin tail. Moderate oxidation (1 mM H2O2) facilitated the release of peptide in the rod portion (S2) of myosin, whereas excessive oxidation (10 mM H2O2) inhibited peptide release in the light meromyosin region. This work presents insightful information for the crucial impact of oxidation on meat protein digestibility from the peptidomics perspective.
Collapse
Affiliation(s)
- Yantao Yin
- Key Laboratory of Meat Processing and Quality Control, MOE, Key Laboratory of Meat Processing, MOA, Jiangsu Synergetic Innovation Center of Meat Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing210095, PR China
| | - Lujuan Xing
- Key Laboratory of Meat Processing and Quality Control, MOE, Key Laboratory of Meat Processing, MOA, Jiangsu Synergetic Innovation Center of Meat Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing210095, PR China
| | - Wangang Zhang
- Key Laboratory of Meat Processing and Quality Control, MOE, Key Laboratory of Meat Processing, MOA, Jiangsu Synergetic Innovation Center of Meat Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing210095, PR China
| |
Collapse
|
2
|
Zheng Y, Zhang L, Qiu Z, Yu Z, Shi W, Wang X. Comparison of oxidation extent, structural characteristics, and oxidation sites of myofibrillar protein affected by hydroxyl radicals and lipid-oxidizing system. Food Chem 2022; 396:133710. [PMID: 35872498 DOI: 10.1016/j.foodchem.2022.133710] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 05/10/2022] [Accepted: 07/12/2022] [Indexed: 11/17/2022]
Abstract
To compare the differences between direct protein oxidation (PO) and lipid-derived PO, the myofibrillar protein (MP) of obscure pufferfish was oxidatively modified by the hydroxyl radical oxidizing system (HOS) and the lipid-oxidizing system (LOS). The degree of oxidation, structural characteristics, and oxidation sites in MP were assessed. The results showed there was no significant thiol loss in LOS, compared with a 77.64% loss observed in case of the HOS. The secondary structure of MP was more vulnerable to HOS, but the tertiary structure was more susceptible to LOS. The cross-linking was largely attributed to the reversible disulfide links in HOS and the irreversible covalent linkages in LOS. Six amino acids and 10 specific oxidant products were identified in HOS. Only three amino acids and three specific oxidant products were identified in LOS. These findings may help deepen the understanding regarding the mechanism underlying PO in protein- and lipid-rich food materials.
Collapse
Affiliation(s)
- Yao Zheng
- Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture and Rural Affairs, P.R.China; East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China; College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Long Zhang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Zehui Qiu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Zheng Yu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Wenzheng Shi
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Xichang Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| |
Collapse
|
3
|
Zhang M, Li C, Zhang Y, He L, Li W, Zhang M, Pan J, Huang S, Liu Y, Zhang Y, Jin Y, Cao J, Jin G, Tang X. Interactions between unfolding/disassembling behaviors, proteolytic subfragments and reversible aggregation of oxidized skeletal myosin isoforms at different salt contents. Food Res Int 2022; 157:111449. [PMID: 35761689 DOI: 10.1016/j.foodres.2022.111449] [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: 04/08/2022] [Revised: 05/17/2022] [Accepted: 05/30/2022] [Indexed: 11/04/2022]
Abstract
Myosin filament plays a critical role in water-trapping and thermodynamic regulation during processing of brined muscle foods. The redox state and availability of proteolytic/antioxidant enzymes affected by salt may change the ion-binding capacity of myosin consequently contributing to swelling and rehydration. Thus, this study investigated the impact of different salt content (0%, 1%, 2%, 3%, 4%, 5% NaCl) and oxidation in vitro (10 mM H2O2/ascorbate-based hydroxyl radical (OH)-generating system) on the oxidative stability, solubility/dispersion capacity, chymotrypsin digestibility, aggregation site and the microrheological properties of isolated porcine myosin. The result showed that, brining at 2% salt exposed more sulfhydryl groups and inhibited the formation of disulfide bond, whereby smaller dispersed structure (diameter within 10-50 nm) and higher Ca2+-ATPase activity of the denatured myosin were observed. Accordingly, gel electrophoresis showed that myosin S1 and HMM subunits were highly oxidized and susceptible to reversible assembles. Despite enhanced hydrophobic interactions between swelled myosin at 3% salt content, ≥4% salt greatly promoted the exposure/polarization of tryptophan and cross-linking structures, mainly occurring at myosin S2 portion. The results of micro-rheology proved that oxidized myosin formed a tighter heat-set network following rehydration at high ion strength (≥4% salt), suggesting an increased inter-droplet resistance and macroscopic viscosity. This work is expected to give some useful insights into improved texture and functionality of engineered muscle foods.
Collapse
Affiliation(s)
- Min Zhang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China; College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Chengliang Li
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China; College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yuemei Zhang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China
| | - Lichao He
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China
| | - Wei Li
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Mengling Zhang
- Beijing Key Laboratory of Environmental Toxicology, School of Public Health, Capital Medical University, Beijing 100069, PR China
| | - Jiajing Pan
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shuangjia Huang
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yuanyi Liu
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China
| | - Yan Zhang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China
| | - Yongguo Jin
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jinxuan Cao
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China
| | - Guofeng Jin
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Xiaoyan Tang
- Key Laboratory of Agro-product Quality & Safety, Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| |
Collapse
|
4
|
Chen X, Chen K, Zhang L, Liang L, Xu X. Impact of Phytophenols on Myofibrillar Proteins: Revisit the Interaction Scenarios Inspired for Meat Products Innovation. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2089681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Xing Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Kaiwen Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Lingying Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Li Liang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing and Quality Control, Ministry of Education and College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| |
Collapse
|
5
|
Cao Y, Han X, Yuan F, Fan X, Liu M, Feng L, Li Z, Huang J. Effect of combined treatment of L-arginine and transglutaminase on the gelation behavior of freeze-damaged myofibrillar protein. Food Funct 2022; 13:1495-1505. [PMID: 35060582 DOI: 10.1039/d1fo03691b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This research focused on the effects of L-arginine (Arg, 5 mM), transglutaminase (TG, E : S = 1 : 500), and the combination (Arg + TG) on the physicochemical properties and heat-induced gel performance of freeze-damaged myofibrillar protein (MP). The incorporation of Arg decreased the α-helix percentage (48.4%) and the mean particle size of freeze-damaged MP, as well as cooking loss (46.5%) and the overall textural characteristics of MP gels. The addition of TG reduced the α-helix content by 10.7% but significantly enhanced the crosslinking and heat-induced gel behavior of freeze-damaged MP, resulting in a slight reduction of cooking loss (17.7%) and the most ideal textural properties of MP gels. Although the presence of Arg remarkably suppressed the heat-induced development of storage modulus (G') and reduced the hardness of MP gels (by 13.4%), the combination (Arg + TG) showed the lower cooking loss and the improved textural characteristics, with the set gel displaying the most delicate and compact microstructure. These findings indicated that the combination of Arg and TG could be a potential strategy to enhance the gelling performance of freeze-damaged meat proteins.
Collapse
Affiliation(s)
- Yungang Cao
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an, 710021, China.
| | - Xinrui Han
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an, 710021, China.
| | - Fang Yuan
- School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Xin Fan
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an, 710021, China.
| | - Miaomiao Liu
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an, 710021, China.
| | - Li Feng
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an, 710021, China.
| | - Zhaorui Li
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an, 710021, China.
| | - Junrong Huang
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an, 710021, China.
| |
Collapse
|
6
|
Wang Q, Geng X, Zhao H, Yu D, Shao J, Li C. Tetrasodium pyrophosphate ameliorates oxidative damage to the TGase-catalyzed gelation of actomyosins. Food Chem 2022; 378:132128. [PMID: 35042110 DOI: 10.1016/j.foodchem.2022.132128] [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: 09/02/2021] [Revised: 12/30/2021] [Accepted: 01/08/2022] [Indexed: 11/26/2022]
Abstract
The present study attempted to investigate the interactive roles of protein oxidation (0-20 mM H2O2) and tetrasodium pyrophosphate (TSPP) on the crosslinking efficiency of actomyosin mediated by transglutaminase (TGase). Oxidation at 0-20 mM H2O2 was not conducive to TGase-mediated crosslinking as indicated by the relative reduction of free amine consumption from 35.3% to 11.7%, and caused the principle crosslinking sites to progressively convert from myosin subfragment-1 (S1) to subfragment-1 (S2) as evidenced by electrophoresis. However, the binding of TSPP to myosin alleviated oxidation suppression to TGase-catalyzed crosslinking in varying degrees and retarded the migration of crosslinking site from S1 to S2. Moreover, oxidation (especially 20 mM H2O2) decreased the final (90 °C) elasticity index (EI) and water holding capacity of TGase-treated actomyosin gel, while TSPP intensified those of TGase-catalyzed actomyosin gel, indicating that TSPP had a positive effect on ameliorating the oxidative stress to TGase-catalyzed gelation of actomyosin.
Collapse
Affiliation(s)
- Qingling Wang
- College of Food Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Xiaoqian Geng
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Hongfei Zhao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Di Yu
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Junhua Shao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Chunqiang Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.
| |
Collapse
|
7
|
Cao Y, Li B, Fan X, Wang J, Zhu Z, Huang J, Xiong YL. Synergistic recovery and enhancement of gelling properties of oxidatively damaged myofibrillar protein by l-lysine and transglutaminase. Food Chem 2021; 358:129860. [PMID: 33933959 DOI: 10.1016/j.foodchem.2021.129860] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 04/01/2021] [Accepted: 04/09/2021] [Indexed: 11/19/2022]
Abstract
The influence of combined Lysine (Lys) and transglutaminase (TG) on the conformation and gelling properties of oxidatively damaged myofibrillar protein (MP) was investigated. The addition of Lys (5 mM) significantly increased the α-helix content (by 47.8%) and decreased the particle size of oxidatively damaged MP, and improved the cooking yield (by 16.8%) and the breaking strength of MP gels (by 65.5%). The treatment with TG (E:S = 1:500) led to a slightly reduced α-helix content but improved breaking strength (by 41.8%) and cooking loss (by 13.3%) of the gels. Their combination (Lys + TG) showed the greatest and synergistic overall improvement, with the set gel displaying a fine, smooth and compact network structure. Notably, the gelling ability of oxidatively damaged MP upon Lys + TG treatment was significantly stronger than that of non-oxidized MP far exceeding its recovery. Therefore, significantly enhanced gelling properties of oxidatively damaged MP can be attained through the combination Lys and TG.
Collapse
Affiliation(s)
- Yungang Cao
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Baoling Li
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Xin Fan
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Jiankang Wang
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Zhenbao Zhu
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Junrong Huang
- School of Food and Biological Engineering, and Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Xi' an 710021, China.
| | - Youling L Xiong
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, United States.
| |
Collapse
|
8
|
Akbari M, Razavi SH, Kieliszek M. Recent advances in microbial transglutaminase biosynthesis and its application in the food industry. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
9
|
Wang Q, Sun Y, Shao J, Lv B, Yu Z, Zhao S, Li C. Tetrasodium pyrophosphate promotes light meromyosin crosslinking by microbial transglutaminase. Food Chem 2020; 346:128910. [PMID: 33460961 DOI: 10.1016/j.foodchem.2020.128910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/12/2020] [Accepted: 12/14/2020] [Indexed: 10/22/2022]
Abstract
Phosphates are commonly included in meat processing, where oxidation is inevitable, to improve water binding. This present study attempted to reveal the interactive roles of protein oxidation and tetrasodium pyrophosphate (TSPP) on the crosslinking pattern of myosin mediated by transglutaminase (TGase). Mild oxidation at 1 mM H2O2 facilitated the TGase-initiated crosslinking, with the dominate crosslinking site shifted from S1 (in nonoxidized myosin) to Rod. The introduction of TSPP alleviated the oxidation stress on proteins, and was conductive to the crosslinking reaction notably at the LMM domain. The crosslinking sites in untreated myosin were identified as Gln-613 (S1) and Gln-1498 (LMM) by amino-acid sequence analysis, while strongly oxidation resulted in the loss of Gln-1498. Contrastively, four new reactive crosslinking sites were generated by TSPP, one (Gln-558/Gln-567) located on S1 and three (Gln-1362, Gln-1374, and Gln-1423/Gln-1426) on LMM. Yet, Gln-1362 was eliminated under strong oxidation at 50 mM H2O2.
Collapse
Affiliation(s)
- Qingling Wang
- College of Food Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Yue Sun
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Junhua Shao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Bowen Lv
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Ze Yu
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Sihan Zhao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Chunqiang Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.
| |
Collapse
|
10
|
Xiong YL, Guo A. Animal and Plant Protein Oxidation: Chemical and Functional Property Significance. Foods 2020; 10:E40. [PMID: 33375649 PMCID: PMC7824645 DOI: 10.3390/foods10010040] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 12/29/2022] Open
Abstract
Protein oxidation, a phenomenon that was not well recognized previously but now better understood, is a complex chemical process occurring ubiquitously in food systems and can be induced by processing treatments as well. While early research concentrated on muscle protein oxidation, later investigations included plant, milk, and egg proteins. The process of protein oxidation involves both radicals and nonradicals, and amino acid side chain groups are usually the site of initial oxidant attack which generates protein carbonyls, disulfide, dityrosine, and protein radicals. The ensuing alteration of protein conformational structures and formation of protein polymers and aggregates can result in significant changes in solubility and functionality, such as gelation, emulsification, foaming, and water-holding. Oxidant dose-dependent effects have been widely reported, i.e., mild-to-moderate oxidation may enhance the functionality while strong oxidation leads to insolubilization and functionality losses. Therefore, controlling the extent of protein oxidation in both animal and plant protein foods through oxidative and antioxidative strategies has been of wide interest in model system as well in in situ studies. This review presents a historical perspective of food protein oxidation research and provides an inclusive discussion of the impact of chemical and enzymatic oxidation on functional properties of meat, legume, cereal, dairy, and egg proteins based on the literature reports published in recent decades.
Collapse
Affiliation(s)
- Youling L. Xiong
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA;
| | | |
Collapse
|
11
|
Zhao X, Xu X, Zhou G. Covalent chemical modification of myofibrillar proteins to improve their gelation properties: A systematic review. Compr Rev Food Sci Food Saf 2020; 20:924-959. [DOI: 10.1111/1541-4337.12684] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Xue Zhao
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; Key Laboratory of Animal Products Processing, MOA; Key Lab of Meat Processing and Quality Control, MOE; College of Food Science and Technology Nanjing Agricultural University Nanjing P.R. China
| | - Xinglian Xu
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; Key Laboratory of Animal Products Processing, MOA; Key Lab of Meat Processing and Quality Control, MOE; College of Food Science and Technology Nanjing Agricultural University Nanjing P.R. China
| | - Guanghong Zhou
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control; Key Laboratory of Animal Products Processing, MOA; Key Lab of Meat Processing and Quality Control, MOE; College of Food Science and Technology Nanjing Agricultural University Nanjing P.R. China
| |
Collapse
|
12
|
Fu QQ, Liu R, Zhang W, Ben A, Wang R. In Vitro Susceptibility of Oxidized Myosin by μ-Calpain or Caspase-3 and the Determination of the Oxidation Sites of Myosin Heavy Chains. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8629-8636. [PMID: 32678614 DOI: 10.1021/acs.jafc.0c01065] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The effect of susceptibility to in vitro oxidation on the degradation of myosin isolated from beef muscles via μ-calpain or caspase-3 was examined, and the measurement of the oxidation sites of myosin heavy chains was performed. Myosin was incubated with hydroxyl free radical-generating systems, which were composed of 0.01 M FeCl3, 0.1 M ascorbic acid, and 0, 25, 50, and 100 μM H2O2 at 37 °C for 20 min. The oxidized myosin then reacted with μ-calpain or caspase-3 at 37 °C for 30 min, respectively. The results showed that protein oxidation systems in vitro resulted in different levels of myosin oxidation, leading to significant changes in the secondary structure of myosin (P < 0.05). The sodium dodecyl dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting results showed that in vitro oxidation promoted myosin degradation via μ-calpain or caspase-3. Proteomics research suggested that the number of myosin oxidation sites increased constantly with the increase of oxidation levels. Oxidation sites of myosin were mainly cysteine, methionine, arginine, histidine, tyrosine, lysine, and asparagine. These results indicated that oxidation using H2O2 in the range of 0-100 μM could increase the degradation of myosin via μ-calpain and caspase-3 due to increased exposure of the oxidation sites of myosin.
Collapse
Affiliation(s)
- Qing-Quan Fu
- School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, Jiangsu, China
| | - Rui Liu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China
| | - Wangang Zhang
- Key Laboratory of Meat Processing and Quality Control, MOE, Key Laboratory of Meat Processing, MOA, Jiangsu Synergetic Innovation Center of Meat Processing and Quality Control, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Ailing Ben
- School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, Jiangsu, China
| | - Rongrong Wang
- School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, Jiangsu, China
| |
Collapse
|