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Gebhardt R, Hohn C, Asaduzzaman M. Stabilizing interactions of casein microparticles after a thermal post-treatment. Food Chem 2024; 450:139369. [PMID: 38653051 DOI: 10.1016/j.foodchem.2024.139369] [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: 02/09/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/25/2024]
Abstract
Casein microparticles from milk are important carrier materials for bioactive substances with stability and swelling properties that can be influenced by heat treatment. Microparticles produced by depletion flocculation and film drying remain stable in acidic media but swell and disintegrate under slightly alkaline conditions. Heat treatment after formation can stabilize the microparticles via a disulfide bridge network and newly formed hydrophobic contacts. Temperatures >60 °C are required so that denatured whey protein initiate formation of disulfide bridges via thiol exchange reactions. The particles then swell in a two-step process and exhibit an overshooting effect. If formation of disulphide bridges is prevented during heat treatment by adding N-methylmaleimide, overshooting swelling disappears and microparticles continue to expand instead. The analysis with parallel system dynamics models is based on the swelling of uncross-linked caseins, which is limited by the expansion capacity of cross-linked caseins.
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Affiliation(s)
- Ronald Gebhardt
- RWTH Aachen University, Chair of Soft Matter Process Engineering (AVT.SMP), Germany.
| | - Calvin Hohn
- RWTH Aachen University, Chair of Soft Matter Process Engineering (AVT.SMP), Germany
| | - Md Asaduzzaman
- RWTH Aachen University, Chair of Soft Matter Process Engineering (AVT.SMP), Germany
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2
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Ashrafi-Kooshk MR, Norouzi F, Zare Karizak A, Ahmadian S, Moosavi-Movahedi AA, Riazi G. Crosstalk between tau protein autoproteolysis and amyloid fibril formation. Int J Biol Macromol 2024; 262:129953. [PMID: 38325678 DOI: 10.1016/j.ijbiomac.2024.129953] [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: 09/15/2023] [Revised: 01/25/2024] [Accepted: 02/01/2024] [Indexed: 02/09/2024]
Abstract
Tau cleavage has been shown to have a significant effect on protein aggregation. Tau truncation results in the formation of aggregation-prone fragments leading to toxic aggregates and also causes the formation of harmful fragments that do not aggregate. Thus, targeting proteolysis of tau would be beneficial for the development of therapeutics for Alzheimer's disease and related tauopathies. In this study, amino-terminal quantification and ThT fluorimetry were respectively used to analyze the kinetics of tau fragmentation and fibril formation. SDS-PAGE analysis of tau protein incubated with a disulfide-reducing agent demonstrated that the cysteines of tau have a crucial role in the fibrillation and autoproteolysis. However, the structures converted to amyloid fibrils were different with conformations that led to autoproteolysis. The quantification of the amino terminal indicated that the double-disulfide parallel structures formed in the presence of heparin did not have protease activity. The survey of possible tau disulfide-mediated dimer configurations suggested that the non-register single disulfide bound conformations were involved in the tau autoproteolysis process. Moreover, the inhibition of autoproteolysis resulted in the increment of aggregation rate; hence it seems that the tau auto-cleavage is the cellular defense mechanism against protein fibrillation.
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Affiliation(s)
| | - Fatemeh Norouzi
- Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, Tehran, Iran
| | - Ashkan Zare Karizak
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Shahin Ahmadian
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | | | - Gholamhossein Riazi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
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3
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Chang YB, Kim H, Lee SK, Kim HJ, Jeong AH, Suh HJ, Ahn Y. Characteristics and Absorption Rate of Whey Protein Hydrolysates Prepared Using Flavourzyme after Treatment with Alcalase and Protamex. Molecules 2023; 28:7969. [PMID: 38138458 PMCID: PMC10745520 DOI: 10.3390/molecules28247969] [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: 10/17/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
The purpose of this study was to evaluate the physicochemical properties of whey protein hydrolysate and determine changes in absorption rate due to enzymatic hydrolysis. The molecular weight distribution analysis of whey protein concentrate (WPC) and low-molecule whey protein hydrolysate (LMWPH) using the Superdex G-75 column revealed that LMWPH is composed of peptides smaller than those in WPC. Fourier-transform infrared spectroscopy indicated differences in peak positions between WPC and LMWPH, suggesting hydrolysis-mediated changes in secondary structures. Moreover, LMWPH exhibited higher thermal stability and faster intestinal permeation than WPC. Additionally, oral LMWPH administration increased serum protein content at 20 min, whereas WPC gradually increased serum protein content after 40 min. Although the total amount of WPC and LMWPH absorption was similar, LMWPH absorption rate was higher. Collectively, LMWPH, a hydrolysate of WPC, has distinct physicochemical properties and enhanced absorptive characteristics. Taken together, LMWPH is composed of low-molecular-weight peptides with low antigenicity and has improved absorption compared to WPC. Therefore, LMWPH can be used as a protein source with high bioavailability in the development of functional materials.
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Affiliation(s)
- Yeok Boo Chang
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Republic of Korea; (Y.B.C.); (H.K.)
- Transdisciplinary Major in Learning Health Systems, Department of Healthcare Sciences, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Hyeongyeong Kim
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Republic of Korea; (Y.B.C.); (H.K.)
- Transdisciplinary Major in Learning Health Systems, Department of Healthcare Sciences, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Se Kyung Lee
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Republic of Korea; (Y.B.C.); (H.K.)
- Transdisciplinary Major in Learning Health Systems, Department of Healthcare Sciences, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Hye-Jin Kim
- R&D Group, Maeil Health Nutrition Co., Ltd., Pyeongtaek 17714, Republic of Korea; (H.-J.K.); (A.-H.J.)
| | - A-Hyun Jeong
- R&D Group, Maeil Health Nutrition Co., Ltd., Pyeongtaek 17714, Republic of Korea; (H.-J.K.); (A.-H.J.)
| | - Hyung Joo Suh
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Republic of Korea; (Y.B.C.); (H.K.)
- Transdisciplinary Major in Learning Health Systems, Department of Healthcare Sciences, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Yejin Ahn
- Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Republic of Korea; (Y.B.C.); (H.K.)
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Ramírez-Rodríguez LC, Quintanilla-Carvajal MX, Mendoza-Castillo DI, Bonilla-Petriciolet A, Jiménez-Junca C. Preparation and Characterization of an Electrospun Whey Protein/Polycaprolactone Nanofiber Membrane for Chromium Removal from Water. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2744. [PMID: 36014608 PMCID: PMC9413122 DOI: 10.3390/nano12162744] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/03/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
Chromium pollution represents a worldwide concern due to its high toxicity and bioaccumulation in organisms and ecosystems. An interesting material to remove metal ions from water is a whey-protein-based material elaborated by electrospinning, which is an emerging method to produce adsorbent membranes with diverse applications. The aim of this study was to prepare an adsorbent membrane of whey protein isolate (WPI) and polycaprolactone (PCL) by electrospinning to remove chromium ions from water. The adsorbent membrane was synthesized by a central composed design denaturing WPI using 2-Mercaptoethanol and mixing it with PCL to produce electrospun nanofibers. The adsorbent membrane was characterized by denaturation, Scanning Electron Microscope, Fourier-Transform Infrared Spectroscopy, Contact Angle, Thermogravimetric Analysis, and X-ray Photoelectron Spectrometry. The adsorption properties of this membrane were assessed in the removal of chromium. The removal performance of the membrane was enhanced by an increase in temperature showing an endothermic adsorption process. The adsorption process of chromium ions onto the nanofiber membrane followed the Sips adsorption isotherm, while the adsorption kinetics followed a pseudo-second kinetics where the maximum adsorption capacity was 31.0 mg/g at 30 °C and pH 2. This work provides a novel method to fabricate a hybrid membrane with amyloid-type fibrils of WPI and PCL, which is a promising adsorbent to remove heavy metal ions from water.
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Affiliation(s)
- Laura Cristina Ramírez-Rodríguez
- Maestría en Diseño y Gestión de Procesos Facultad de Ingeniería, Campus Universitario Puente del Común, Universidad de la Sabana, Km. 7 Autopista Norte, Chia 25001, Colombia
| | - María Ximena Quintanilla-Carvajal
- Agroindustrial Processes Research Group, Campus Universitario Puente del Común, Universidad de La Sabana, Km. 7 Autopista Norte, Chia 25001, Colombia
| | - Didilia Ileana Mendoza-Castillo
- CONACYT, Ciudad de México 03940, Mexico
- Departamento de Ingeniería Química, Instituto Tecnológico de Aguascalientes, Aguascalientes 20256, Mexico
| | - Adrián Bonilla-Petriciolet
- Departamento de Ingeniería Química, Instituto Tecnológico de Aguascalientes, Aguascalientes 20256, Mexico
| | - Carlos Jiménez-Junca
- Bioprospecting Research Group, Campus Universitario Puente del Común, Universidad de La Sabana, Km. 7 Autopista Norte, Chia 25001, Colombia
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Solubilization of concentrated protein dispersion: Effect of hydrogen peroxide (H2O2) and sodium hexametaphosphate (SHMP). Food Chem 2022; 400:133980. [DOI: 10.1016/j.foodchem.2022.133980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 08/03/2022] [Accepted: 08/17/2022] [Indexed: 11/22/2022]
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Alternatives to Cow’s Milk-Based Infant Formulas in the Prevention and Management of Cow’s Milk Allergy. Foods 2022; 11:foods11070926. [PMID: 35407012 PMCID: PMC8997926 DOI: 10.3390/foods11070926] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 12/27/2022] Open
Abstract
Cow’s milk-based infant formulas are the most common substitute to mother’s milk in infancy when breastfeeding is impossible or insufficient, as cow’s milk is a globally available source of mammalian proteins with high nutritional value. However, cow’s milk allergy (CMA) is the most prevalent type of food allergy among infants, affecting up to 3.8% of small children. Hypoallergenic infant formulas based on hydrolysed cow’s milk proteins are commercially available for the management of CMA. Yet, there is a growing demand for more options for infant feeding, both in general but especially for the prevention and management of CMA. Milk from other mammalian sources than the cow, such as goat, sheep, camel, donkey, and horse, has received some attention in the last decade due to the different protein composition profile and protein amino acid sequences, resulting in a potentially low cross-reactivity with cow’s milk proteins. Recently, proteins from plant sources, such as potato, lentil, chickpeas, quinoa, in addition to soy and rice, have gained increased interest due to their climate friendly and vegan status as well as potential lower allergenicity. In this review, we provide an overview of current and potential future infant formulas and their relevance in CMA prevention and management.
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Anema SG. Heat-induced changes in caseins and casein micelles, including interactions with denatured whey proteins. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105136] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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8
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Chen B, Zhou K, Xie Y, Nie W, Li P, Zhou H, Xu B. Glutathione-mediated formation of disulfide bonds modulates the properties of myofibrillar protein gels at different temperatures. Food Chem 2021; 364:130356. [PMID: 34147870 DOI: 10.1016/j.foodchem.2021.130356] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/24/2021] [Accepted: 06/11/2021] [Indexed: 10/21/2022]
Abstract
The present study illustrated modulation of protein aggregation by affecting disulfide/sulfhydryl exchange reactions by adding different concentrations of free thiol represented by reduced-glutathione (GSH) for modulating myofibrillar protein (MP) gel properties at 75 °C or 95 °C. Gel strength and rheological results showed the effects of GSH were dependent on the concentrations (5, 10, 20, 40, and 80 g/kg) and heating temperatures. SEM results showed that the addition of GSH improved the gel microstructure at 95 °C. AFM and DLS results indicated that protein aggregation was also inhibited. At 75 °C, the addition of GSH influenced both MP aggregation and gel properties. Low concentrations (5, 10 g/kg) of GSH promoted aggregation, whereas high concentrations (20, 40, and 80 g/kg) of GSH inhibited this. By analyzing the protein structure and cross-linking pattern changes of MP and MP/GSH composites, a pathway involving GSH influencing MP gel properties was determined.
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Affiliation(s)
- Bo Chen
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Kai Zhou
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; Anhui QiangWang Flavouring Food CO., LTD, China
| | - Yong Xie
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Wen Nie
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Peijun Li
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Hui Zhou
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; The Key Laboratory for Agriculture Products Processing of Anhui Province, Hefei 230601, China
| | - Baocai Xu
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China.
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9
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Yang HJ, Wang HF, Tao F, Li WX, Cao GT, Yang YY, Xu XL, Zhou GH, Shen Q. Structural basis for high-pressure improvement in depolymerization of interfacial protein from RFRS meat batters in relation to their solubility. Food Res Int 2021; 139:109834. [PMID: 33509459 DOI: 10.1016/j.foodres.2020.109834] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/13/2020] [Accepted: 10/18/2020] [Indexed: 11/30/2022]
Abstract
High-pressure processing (HPP) can modify the construction of interfacial proteins (IPs) to improve the properties of reduced-fat and reduced-salt (RFRS) meat batters. In this study, the relationship between the construction of IPs and their solubility at fat droplet/water interface in RFRS meat batters with HPP treatments was investigated. When 200 MPa for 2 min was applied, the IPs exhibited the highest solubility due to a high concentration of absorbed myosin with the content of random coil 65.62%, but the particle diameter was in reverse. The microscopy revealed the depolymerization of IPs occurred at low pressure, while macromolecular aggregates were produced as the cross-linking of IPs to some degree at pressure ≥ 200 MPa. This phenomenon was supported by the result of SDS-PAGE and the sulfhydryl of IPs. In conclusion, the HPP induced solubility alteration of IPs was achieved by modifying their construction through adjusting the secondary structures and regulating bond interactions.
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Affiliation(s)
- Hui-Juan Yang
- College of Standardization, China Jiliang University, Hangzhou 310018, PR China; Synergetic Innovative Center of Food Safety and Nutrition, Key Laboratory of Meat Processing and Quality Control, Ministry of Education, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Hai-Feng Wang
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, PR China
| | - Fei Tao
- College of Standardization, China Jiliang University, Hangzhou 310018, PR China
| | - Wei-Xia Li
- College of Standardization, China Jiliang University, Hangzhou 310018, PR China
| | - Guang-Tian Cao
- College of Standardization, China Jiliang University, Hangzhou 310018, PR China
| | - Yun-Yun Yang
- College of Standardization, China Jiliang University, Hangzhou 310018, PR China
| | - Xing-Lian Xu
- Synergetic Innovative Center of Food Safety and Nutrition, Key Laboratory of Meat Processing and Quality Control, Ministry of Education, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Guang-Hong Zhou
- Synergetic Innovative Center of Food Safety and Nutrition, Key Laboratory of Meat Processing and Quality Control, Ministry of Education, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Qing Shen
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, PR China.
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Streicher C, Nguyen NH, Anema SG. Modifying whey protein concentrate/isolate by heating in the presence of cysteine. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Szajnar K, Znamirowska A, Kuźniar P. Sensory and textural properties of fermented milk with viability of Lactobacillus rhamnosus and Bifidobacterium animalis ssp. lactis Bb-12 and increased calcium concentration. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2020. [DOI: 10.1080/10942912.2020.1748050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Katarzyna Szajnar
- Department of Dairy Technology, University of Rzeszow, Rzeszow, Poland
| | - Agata Znamirowska
- Department of Dairy Technology, University of Rzeszow, Rzeszow, Poland
| | - Piotr Kuźniar
- Department of Food and Agriculture Production Engineering, University of Rzeszow, Rzeszow, Poland
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Zhang ZH, Peng H, Woo MW, Zeng XA, Brennan M, Brennan CS. Preparation and characterization of whey protein isolate-chlorophyll microcapsules by spray drying: Effect of WPI ratios on the physicochemical and antioxidant properties. J FOOD ENG 2020. [DOI: 10.1016/j.jfoodeng.2019.109729] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Kinetics of heat-induced denaturation of proteins in model infant milk formulas as a function of whey protein composition. Food Chem 2020; 302:125296. [DOI: 10.1016/j.foodchem.2019.125296] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/25/2019] [Accepted: 07/29/2019] [Indexed: 02/07/2023]
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