51
|
Wang X, Chen S, Cui Q, Li R, Wang X, Jiang L. Effect of pH on Freeze-thaw Stability of Glycated Soy Protein Isolate. J Oleo Sci 2019; 68:281-290. [DOI: 10.5650/jos.ess18227] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Xiaodan Wang
- College of Food Science, Northeast Agricultural University
| | - Shuang Chen
- College of Food Science, Northeast Agricultural University
| | - Qiang Cui
- College of Food Science, Northeast Agricultural University
| | - Rui Li
- College of Food Science, Northeast Agricultural University
| | - Xibo Wang
- College of Food Science, Northeast Agricultural University
| | - Lianzhou Jiang
- College of Food Science, Northeast Agricultural University
| |
Collapse
|
52
|
Li L, Cai R, Wang P, Xu X, Zhou G, Sun J. Manipulating interfacial behavior and emulsifying properties of myosin through alkali-heat treatment. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.06.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
53
|
Xu Y, Wang G, Wang X, Yu J, Wang J, Zhang Z, Li R. Effects of homogenization on the molecular flexibility and emulsifying properties of soy protein isolate. Food Sci Biotechnol 2018; 27:1293-1299. [PMID: 30319837 DOI: 10.1007/s10068-018-0361-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/12/2018] [Accepted: 03/19/2018] [Indexed: 12/01/2022] Open
Abstract
The sensitivity of soy protein isolate (SPI) to trypsin was characterized by its flexibility. The effects of different homogenization conditions on soy protein isolate flexibility and emulsifying properties were investigated. Set the homogenization pressure was 120 MPa (megapascal) and the homogenous number of times is 0-4 times, the flexibility increases with the increase of the homogenization times (0-3 times), the change trend of flexibility is not obvious (3-4 times). When the homogenization times was 0-3 times, the emulsifying activity increases, and the emulsifying activity was the strongest at 3 times, after homogenization 3 times, the change trend of emulsifying activity is not obvious, the trend of emulsification stability and emulsification activity were similar. The surface hydrophobicity increases with the increase of homogenization times, while the turbidity decreases. The other structural indicators such as Ultraviolet scanning and endogenous tryptophan fluorescence spectroscopy suggest that the structure of SPI becomes more stretch as the flexibility increases.
Collapse
Affiliation(s)
- Yeye Xu
- 1College of Food Science, Northeast Agricultural University, Harbin, 150030 Heilongjiang China
| | | | - Xibo Wang
- 1College of Food Science, Northeast Agricultural University, Harbin, 150030 Heilongjiang China
| | - Jie Yu
- 1College of Food Science, Northeast Agricultural University, Harbin, 150030 Heilongjiang China
| | - Jian Wang
- Chengdu New Lubricants Company, Chengdu, 610000 China
| | - Zeyu Zhang
- COFCO Industry (Qinhuangdao) Pangthai Co., Ltd, Qinhuangdao, 066206 China
| | - Rui Li
- 1College of Food Science, Northeast Agricultural University, Harbin, 150030 Heilongjiang China
| |
Collapse
|
54
|
BSA/Chitosan Polyelectrolyte Complex: A Platform for Enhancing the Loading and Cancer Cell-Uptake of Resveratrol. Macromol Res 2018. [DOI: 10.1007/s13233-018-6112-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
55
|
Yu J, Wang G, Wang X, Xu Y, Chen S, Wang X, Jiang L. Improving the freeze-thaw stability of soy protein emulsions via combing limited hydrolysis and Maillard-induced glycation. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.01.031] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
56
|
Enzymatic catalyzed corn fiber gum-bovine serum albumin conjugates: Their interfacial adsorption behaviors in oil-in-water emulsions. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.11.048] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
57
|
Physicochemical Properties of Bovine Serum Albumin-Glucose and Bovine Serum Albumin-Mannose Conjugates Prepared by Pulsed Electric Fields Treatment. Molecules 2018; 23:molecules23030570. [PMID: 29510477 PMCID: PMC6017466 DOI: 10.3390/molecules23030570] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 02/22/2018] [Accepted: 02/28/2018] [Indexed: 01/20/2023] Open
Abstract
The pulsed electric fields (PEF) treatment is a novel method for obtaining glycated proteins by way of a Maillard reaction between proteins and polysaccharides but its effect on the preparation of protein–monosaccharide conjugate has not been explored. This study aimed to prepare bovine serum albumin (BSA)–glucose and BSA–mannose conjugates using PEF in pH 10.0 at an intensity of 10 or 20 kV/cm, frequency of 1 kHz, pulse width of 20 μs and 73.5 pulses. The conjugates were evaluated for physicochemical properties. The results indicated that PEF not only promoted Maillard reaction between BSA and glucose or mannose but also alleviated the undesirable browning. PEF treatment favored the increased surface hydrophobicity and emulsifying activity in BSA but reduced surface hydrophobicity and foaming stability and improved foaming capacity in BSA–glucose and BSA–mannose conjugates. These findings provided useful considerations in the application of PEF treatment as a potential method to prepare BSA–monosaccharide conjugates by Maillard reaction.
Collapse
|
58
|
Dravecz G, Jánosi TZ, Beke D, Major DÁ, Károlyházy G, Erostyák J, Kamarás K, Gali Á. Identification of the binding site between bovine serum albumin and ultrasmall SiC fluorescent biomarkers. Phys Chem Chem Phys 2018; 20:13419-13429. [DOI: 10.1039/c8cp02144a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Combined experimental and theoretical studies propose a delayed diffusion model for describing the interaction between ultrasmall NPs and proteins.
Collapse
Affiliation(s)
- Gabriella Dravecz
- Institute for Solid State Physics and Optics
- Wigner Research Centre for Physics
- Hungarian Academy of Sciences
- H-1525 Budapest
- Hungary
| | - Tibor Z. Jánosi
- MTA-PTE High-Field Terahertz Research Group
- University of Pécs
- H-7624 Pécs
- Hungary
- University of Pécs
| | - Dávid Beke
- Institute for Solid State Physics and Optics
- Wigner Research Centre for Physics
- Hungarian Academy of Sciences
- H-1525 Budapest
- Hungary
| | - Dániel Á. Major
- Faculty of Chemical Technology and Biotechnology
- Budapest University of Technology and Economics
- H-1111 Budapest
- Hungary
| | - Gyula Károlyházy
- Institute for Solid State Physics and Optics
- Wigner Research Centre for Physics
- Hungarian Academy of Sciences
- H-1525 Budapest
- Hungary
| | - János Erostyák
- University of Pécs
- Szentágothai Research Centre
- Spectroscopy Research Group
- H-7624 Pécs
- Hungary
| | - Katalin Kamarás
- Institute for Solid State Physics and Optics
- Wigner Research Centre for Physics
- Hungarian Academy of Sciences
- H-1525 Budapest
- Hungary
| | - Ádám Gali
- Institute for Solid State Physics and Optics
- Wigner Research Centre for Physics
- Hungarian Academy of Sciences
- H-1525 Budapest
- Hungary
| |
Collapse
|
59
|
Fu C, Ding C, Sun X, Fu A. Curcumin nanocapsules stabilized by bovine serum albumin-capped gold nanoclusters (BSA-AuNCs) for drug delivery and theranosis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 87:149-154. [PMID: 29549944 DOI: 10.1016/j.msec.2017.12.028] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 12/12/2017] [Accepted: 12/26/2017] [Indexed: 01/03/2023]
Abstract
Nanotechnology plays an important role in the development of drug delivery, imaging, and diagnosis. In this study, nanocapsules containing protein-functionalized gold nanoclusters (AuNCs) as the shell and hydrophobic drug curcumin as the core were prepared as a tumor cell theranostic agent. After the nanocapsules were added into tumor cell media, they entered the cells with high efficiency and exhibited strong fluorescence within the cells. The results indicated that the nanocapsules were broken up in the cells and curcumin was released. Simultaneously, the nanocapsules exhibited significant inhibition effect against tumor cell proliferation in a concentration- and time-dependent manner, and the images of atomic force microscopy (AFM) showed that the cell morphology underwent obvious changes after the capsule treatment. Additionally, cell membrane appeared wrinkles after the cells treated with the nanocapsules, resulting in a rough cell surface, implying that the cytoskeleton would involve in the cell uptake of nanocapsules. Moreover, the AuNCs and curcumin in the system could exert synergistic effect on the inhibition of tumor cell growth and induction of cell apoptosis. The study highlights the potential of the system as a promising agent for drug delivery and tumor cell theranosis.
Collapse
Affiliation(s)
- Chen Fu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China
| | - Chizhu Ding
- College of Science, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Xianchao Sun
- College of Plant Protection, Southwest University, Chongqing 400715, PR China
| | - Ailing Fu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China.
| |
Collapse
|
60
|
Liu J, Tu Z, Wang H, Zhang L, Sha X, Shao Y. Comparative Studies on Physicochemical Properties of Bovine Serum Albumin–Glucose and Galactose Conjugates Formed by Glycation Combined with Ultrasonic Pretreatment. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2017. [DOI: 10.1515/ijfe-2017-0160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe effects of ultrasonication on the physicochemical properties of bovine serum albumin (BSA)–glucose and the galactose conjugates formed by glycation was investigated. Fourier transform ion cyclotron resonance mass spectra analysis showed that the conjugates had a higher molecular weight than the native and ultrasonicated BSA. Ultrasonicated BSA had significantly higher emulsifying and foaming properties than native BSA. The browning intensity, surface hydrophobicity, emulsifying property and foaming capacity of the conjugates were substantially improved while the free amino groups, intrinsic fluorescence emission and foaming stability were decreased compared to native and ultrasonicated BSA. The results of this study indicate that ultrasonication is an efficient technique to improve the physicochemical properties of proteins. The glycation between ultrasonicated BSA and monosaccharide can effectively improve the physicochemical properties of BSA, and the glycation rate order is galactose \gt glucose. It also shows the critical role of monosaccharide conformational changes in improving the glycation and physicochemical properties of proteins.
Collapse
|
61
|
Lechevalier V, Guérin-Dubiard C, Anton M, Beaumal V, David Briand E, Gillard A, Le Gouar Y, Musikaphun N, Pasco M, Dupont D, Nau F. Effect of dry heat treatment of egg white powder on its functional, nutritional and allergenic properties. J FOOD ENG 2017. [DOI: 10.1016/j.jfoodeng.2016.09.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
62
|
Liu F, Tang CH. Soy glycinin as food-grade Pickering stabilizers: Part. II. Improvement of emulsification and interfacial adsorption by electrostatic screening. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.10.024] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
63
|
Liu F, Tang CH. Soy glycinin as food-grade Pickering stabilizers: Part. I. Structural characteristics, emulsifying properties and adsorption/arrangement at interface. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.04.025] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
64
|
Jia Y, Zhai X, Fu W, Liu Y, Li F, Zhong C. Surfactant-free emulsions stabilized by tempo-oxidized bacterial cellulose. Carbohydr Polym 2016; 151:907-915. [PMID: 27474639 DOI: 10.1016/j.carbpol.2016.05.099] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 05/24/2016] [Accepted: 05/27/2016] [Indexed: 11/28/2022]
Abstract
In order to seek a safe, biodegradable, and sustainable solid stabilizer for food, topical and pharmaceutical emulsions, individualized cellulose nanofibers were prepared by oxidizing bacterial cellulose (BC) in a Tempo-mediated system; their ability to stabilize oil/water interface was investigated. Significant amounts of C6 carboxylate groups were selectively formed on each cellulose microfibril surface, so that the hydrophilicity was strengthened, leading to lower contact angles. Meanwhile, both the length and width of fibrils were decreased significantly, by partial cleavage of numerous numbers of inter- and intra-fibrillar hydrogen bonds. Tempo-oxidized BC (TOBC) was more effective than BC in stabilizing oil-water interface, attributing to the much smaller size. Fibril dosage and oxidation degree exerted a great influence on the stability and particle size distribution of emulsion samples. When the fibril dosage was 0.7wt.%, the sample was so stable that it did not experience creaming and coalescence over 8 months. The 2-TOBC coated droplets showed the greatest stability, although both the zeta potential and the electric repulsion were the largest for the 10-TOBC analogue, which was manipulated by the wettability of fibrils. In addition, the stability of samples was analyzed from the viewpoint of particle size distribution. Consequently, fibril size and wettability are two counterbalanced factors influencing the stability of TOBC-stabilized emulsions; a combination of suitable wettability and size imparts TOBC-stabilized emulsion high stability. As a kind of biomass-based particle stabilizer, TOBC showed great potential applications in food, topical and pharmaceutical formulations.
Collapse
Affiliation(s)
- Yuanyuan Jia
- Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin University of Science and Technology, TEDA, Tianjin 300457, PR China; College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, TEDA, Tianjin 300457, PR China.
| | - Xiaoli Zhai
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, TEDA, Tianjin 300457, PR China.
| | - Wei Fu
- Cargill Food (Tianjin) Co. LTD., 29 Huashan Road, Hangu Modern Industrial Park, TEDA, Tianjin, PR China.
| | - Yang Liu
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, TEDA, Tianjin 300457, PR China.
| | - Fei Li
- College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, TEDA, Tianjin 300457, PR China.
| | - Cheng Zhong
- Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin University of Science and Technology, TEDA, Tianjin 300457, PR China.
| |
Collapse
|
65
|
Comparative studies on physicochemical properties of bovine serum albumin-glucose and bovine serum albumin-mannose conjugates formed via Maillard reaction. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.11.061] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
66
|
Arogundade LA, Mu TH, Akinhanmi TF. Structural, physicochemical and interfacial stabilisation properties of ultrafiltered African yam bean (Sphenostylis stenocarpa) protein isolate compared with those of isoelectric protein isolate. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.01.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
67
|
Li R, Fu N, Wu Z, Wang Y, Liu W, Wang Y. Enhancing protein self-association at the gas–liquid interface for foam fractionation of bovine serum albumin from its highly diluted solution. Chem Eng Res Des 2016. [DOI: 10.1016/j.cherd.2016.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
68
|
Li R, Wu Z, Wangb Y, Ding L, Wang Y. Role of pH-induced structural change in protein aggregation in foam fractionation of bovine serum albumin. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2016; 9:46-52. [PMID: 28352591 PMCID: PMC5360987 DOI: 10.1016/j.btre.2016.01.002] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 01/07/2016] [Accepted: 01/13/2016] [Indexed: 11/15/2022]
Abstract
For reducing protein aggregation in foam fractionation, the role of pH-induced structural change in the interface-induced protein aggregation was analyzed using bovine serum albumin (BSA) as a model protein. The results show that the decrease in pH from 7.0 to 3.0 gradually unfolded the BSA structure to increase the molecular size and the relative content of β-sheet and thus reduced the stability of BSA in the aqueous solution. At the isoelectric point (pH 4.7), BSA suffered the lowest level in protein aggregation induced by the gas-liquid interface. In the pH range from 7.0 to 4.7, most BSA aggregates were formed in the defoaming process while in the pH range from 4.7 to 3.0, the BSA aggregates were formed at the gas-liquid interface due to the unfolded BSA structure and they further aggregated to form insoluble ones in the desorption process.
Collapse
Affiliation(s)
- Rui Li
- School of Chemical Engineering and Technology, Hebei University of Technology, No.8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China
| | - Zhaoliang Wu
- School of Chemical Engineering and Technology, Hebei University of Technology, No.8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China
| | - Yanji Wangb
- Key Laboratory of Green Chemical Technology & High Efficient Energy Saving, Hebei University of Technology, No. 8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China
| | - Linlin Ding
- School of Chemical Engineering and Technology, Hebei University of Technology, No.8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China
| | - Yanyan Wang
- Lianyungang TCM Branch of Jiangsu Union Technical Institute, Jiangsu Lianyungang 222006, China
| |
Collapse
|
69
|
Ghorbani Gorji E, Rocchi E, Schleining G, Bender-Bojalil D, Furtmüller PG, Piazza L, Iturri JJ, Toca-Herrera JL. Characterization of resveratrol–milk protein interaction. J FOOD ENG 2015. [DOI: 10.1016/j.jfoodeng.2015.05.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
70
|
Li R, Fu N, Wu Z, Wang Y, Wang Y. Protein aggregation in foam fractionation of bovine serum albumin: Effect of protein concentration. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.08.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
71
|
Tabibiazar M, Davaran S, Hashemi M, Homayonirad A, Rasoulzadeh F, Hamishehkar H, Mohammadifar MA. Design and fabrication of a food-grade albumin-stabilized nanoemulsion. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.09.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
72
|
Chen M, Rong L, Chen X. A simple and sensitive detection of glutamic-pyruvic transaminase activity based on fluorescence quenching of bovine serum albumin. RSC Adv 2015. [DOI: 10.1039/c5ra24162f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
It is well known that Cu(ii) can coordinate withl-alanine (Cu–Ala), which can be destroyed through the addition of glutamic-pyruvic transaminase (GPT) since GPT can effectively catalyze the conversion ofl-alanine into keto-acetic acid.
Collapse
Affiliation(s)
- Miao Chen
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Liya Rong
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Xiaoqing Chen
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
- Collaborative Innovation Center of Resource-conserving & Environment-friendly Society and Ecological Civilization
| |
Collapse
|
73
|
Tang CH, Shen L. Dynamic adsorption and dilatational properties of BSA at oil/water interface: Role of conformational flexibility. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.06.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
74
|
He S, Huang M, Ye W, Chen D, He S, Ding L, Yao Y, Wan L, Xu J, Miao S. Conformational Change of Bovine Serum Albumin Molecules at Neutral pH in Ultra-Diluted Aqueous Solutions. J Phys Chem B 2014; 118:12207-14. [DOI: 10.1021/jp5081115] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Shulian He
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Mei Huang
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Wei Ye
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Dechao Chen
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Shuai He
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Liping Ding
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Yunjin Yao
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Lei Wan
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Jinzhang Xu
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| | - Shiding Miao
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology, Tunxi Road 193, 230009, Hefei, Anhui, China
| |
Collapse
|
75
|
Investigating effects of sample pretreatment on protein stability using size-exclusion chromatography and high-resolution continuum source atomic absorption spectrometry. J Sep Sci 2014; 37:2583-90. [DOI: 10.1002/jssc.201400189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 06/13/2014] [Accepted: 06/15/2014] [Indexed: 12/26/2022]
|
76
|
Masuda T, Chinen H, Fukada K. Effects of Protein Concentration and pH on Oil Droplet Size in O/W Emulsions Stabilized by Bovine Serum Albumin. CHEM LETT 2014. [DOI: 10.1246/cl.131176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takeshi Masuda
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University
| | - Hitomi Chinen
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University
| | - Kazuhiro Fukada
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University
| |
Collapse
|
77
|
Chung C, McClements DJ. Structure–function relationships in food emulsions: Improving food quality and sensory perception. FOOD STRUCTURE-NETHERLANDS 2014. [DOI: 10.1016/j.foostr.2013.11.002] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
78
|
Liang HN, Tang CH. Emulsifying and interfacial properties of vicilins: role of conformational flexibility at quaternary and/or tertiary levels. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:11140-11150. [PMID: 24151988 DOI: 10.1021/jf403847k] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Although the functionality of plant proteins (and soy proteins in particular) has been widely investigated in the last decades, the importance of conformational characteristics to their functionalities is still far away from being understood. The aim of the present work was to unravel the role of conformational flexibility at the quaternary and/or tertiary levels in the emulsifying and interfacial properties of phaseolin, an ideal vicilin (or 7S globulin) from red kidney bean. The conformational flexibility at quaternary and tertiary levels of phaseolin was modulated by urea with increasing concentrations from 0 to 8 M, as characterized by using dynamic light scattering (DLS), intrinsic fluorescence and derivative UV spectroscopy, and differential scanning calorimetry (DSC). The emulsifying and interfacial properties, including emulsifying ability, flocculated state of oil droplets (in fresh emulsions), emulsion stability against creaming, and adsorption dynamics at the oil-water interface, were characterized at a specific protein concentration of 0.5% (w/v). The results indicated that increasing the urea concentration resulted in a progressive dissociation of trimeric phaseolin molecules into monomeric subunits, and even a structural unfolding of dissociated subunits; the urea-induced conformational changes at quaternary and/or tertiary levels were reversible, and the molecules at high urea concentrations shared similar structural features to the "molten globule state". On the other hand, increasing the urea concentration progressively improved the emulsifying ability of the protein, and flocculated extent of oil droplets in the fresh emulsions, but led to a progressive decrease in interfacial protein concentration. The improvement of the emulsifying ability was not related to diffusion (during initial adsorption) and penetration at the interface, but highly dependent on ease of structural rearrangement of the adsorbed proteins. These observations clearly confirmed that the flexibility of phaseolin at quaternary and/or tertiary levels plays a vital role in its emulsifying ability, mainly through the way of affecting the ease of structural rearrangement of adsorbed proteins at the interface. The findings could provide an in-depth understanding of the importance of conformational flexibility for the emulsifying properties of oligomeric storage globulins, and thus are of great help to guide the modifications of the proteins for better emulsifying properties.
Collapse
Affiliation(s)
- Han-Ni Liang
- Department of Food Science and Technology, South China University of Technology , Guangzhou 510640, People's Republic of China
| | | |
Collapse
|
79
|
Liu F, Tang CH. Soy protein nanoparticle aggregates as pickering stabilizers for oil-in-water emulsions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:8888-8898. [PMID: 23977961 DOI: 10.1021/jf401859y] [Citation(s) in RCA: 307] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In recent years, there have been increasing interests in developing food-grade Pickering stabilizers, due to their potential applications in formulations of novel functional foods. The present work was to investigate the potential of soy proteins to be developed into a kind of Pickering-like stabilizer for oil-in-water emulsions. The nanoparticle aggregates of soy protein isolate (SPI) were formed by sequential treatments of heating at 95 °C for 15 min and then electrostatic screening with NaCl addition. The particle size and microstructure of these aggregates were characterized using dynamic light scattering and atomic force microscopy, indicating that the fabricated nanoparticle aggregates were ∼100 nm in size with more surface hydrophobic nature (relative to unheated SPI). The influence of particle concentration (c; 0.5-6.0%, w/w) and increasing oil fraction (ϕ; in the range 0.2-0.6) on the droplet size and coalescence and/or creaming stability of the emulsions stabilized by these nanoparticle aggregates was investigated. The results showed that, at ϕ = 0.2, increasing the c resulted in a progressive but slight decrease in droplet size, and improved the stability against coalescence and creaming; at a specific c, the creaming stability was progressively increased by increasing the ϕ, with better improvement observed at a higher c (e.g., 6.0% vs 2.0%). The improvement of creaming stability was largely associated with the formation of a gel-like network that could entrap the oil droplets within the network. The observations are generally consistent with those observed for the conventional Pickering emulsions, confirming that soy proteins could be applied as a kind of effective Pickering-like stabilizer. The finding may have important implications for the design and fabrication of protein-based emulsion formulations, and even for the development of soy protein products with some unique functions. To the authors' knowledge, this is the first work to report that heat-induced soy protein aggregates exhibit a good potential to act as Pickering-type stabilizers.
Collapse
Affiliation(s)
- Fu Liu
- Department of Food Science and Technology and ‡State Key Laboratory of Pulp and Paper Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
| | | |
Collapse
|