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Impact of interfacial composition on co-oxidation of lipids and proteins in oil-in-water emulsions: Competitive displacement of casein by surfactants Scopus SCIE
期刊论文 | 2019 , 87 , 20-28 | Food Hydrocolloids
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Abstract :

© 2018 Elsevier Ltd In this study, the interfacial composition of protein-stabilized emulsions was manipulated by adding a small molecule surfactant to induce displacement of the adsorbed protein. The rate and extent of lipid and protein oxidation was then measured for emulsions with different interfacial compositions. Lipid and protein co-oxidation were studied in walnut oil-in-water (O/W) emulsions (5% v/v oil, 1.0% w/v protein, 0–1.0% w/v Tween 20, pH 7). The interfacial tension, protein surface load, surface potential, and mean particle size of the emulsions decreased as the surfactant concentration increased, suggesting that caseinate was displaced by Tween 20. Emulsions stabilized solely by caseinate exhibited relatively slow lipid oxidation when incubated in the dark at 45 °C for up to 8 days, as determined by lipid hydroperoxides and 2-thiobarbituric acid-reactive substances (TBARS). In contrast, the caseinate itself was rapidly oxidized, as shown by carbonyl formation, intrinsic fluorescence loss, and electrophoresis measurements. Competitive displacement of adsorbed caseinate by Tween 20 reduced protein oxidation but promoted lipid oxidation, indicating that adsorbed proteins were more sensitive to oxidation themselves but also more efficient at protecting lipids from oxidation than non-adsorbed ones. These results demonstrate the important role that interfacial composition plays on the oxidative stability of food emulsions containing mixtures of emulsifiers.

Keyword :

Co-oxidation Competitive displacement Emulsions Lipid oxidation Protein oxidation Sodium caseinate

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GB/T 7714 Yi, Jianhua , Ning, Jianqin , Zhu, Zhenbao et al. Impact of interfacial composition on co-oxidation of lipids and proteins in oil-in-water emulsions: Competitive displacement of casein by surfactants [J]. | Food Hydrocolloids , 2019 , 87 : 20-28 .
MLA Yi, Jianhua et al. "Impact of interfacial composition on co-oxidation of lipids and proteins in oil-in-water emulsions: Competitive displacement of casein by surfactants" . | Food Hydrocolloids 87 (2019) : 20-28 .
APA Yi, Jianhua , Ning, Jianqin , Zhu, Zhenbao , Cui, Leqi , Decker, Eric A. , McClements, David Julian . Impact of interfacial composition on co-oxidation of lipids and proteins in oil-in-water emulsions: Competitive displacement of casein by surfactants . | Food Hydrocolloids , 2019 , 87 , 20-28 .
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Multiple Laser Stripe Scanning Profilometry Based on Microelectromechanical Systems Scanning Mirror Projection. PubMed SCIE
期刊论文 | 2019 , 10 (1) | Micromachines
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In traditional laser-based 3D measurement technology, the width of the laser stripe is uncontrollable and uneven. In addition, speckle noise in the image and the noise caused by mechanical movement may reduce the accuracy of the scanning results. This work proposes a new multiple laser stripe scanning profilometry (MLSSP) based on microelectromechanical systems (MEMS) scanning mirror which can project high quality movable laser stripe. It can implement full-field scanning in a short time and does not need to move the measured object or camera. Compared with the traditional laser stripe, the brightness, width and position of the new multiple laser stripes projected by MEMS scanning mirror can be controlled by programming. In addition, the new laser strip can generate high-quality images and the noise caused by mechanical movement is completely eliminated. The experimental results show that the speckle noise is less and the light intensity distribution is more even. Furthermore, the number of pictures needed to be captured is significantly reduced to 1 / N ( N is the number of multiple laser stripes projected by MEMS scanning mirror) and the measurement efficiency is increased by N times, improving the efficiency and accuracy of 3D measurement.

Keyword :

MEMS scanning mirror MLSSP vibration noise laser stripe width 3D measurement

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GB/T 7714 Hu Gailing , Zhou Xiang , Zhang Guanliang et al. Multiple Laser Stripe Scanning Profilometry Based on Microelectromechanical Systems Scanning Mirror Projection. [J]. | Micromachines , 2019 , 10 (1) .
MLA Hu Gailing et al. "Multiple Laser Stripe Scanning Profilometry Based on Microelectromechanical Systems Scanning Mirror Projection." . | Micromachines 10 . 1 (2019) .
APA Hu Gailing , Zhou Xiang , Zhang Guanliang , Zhang Chunwei , Li Dong , Wang Gangfeng . Multiple Laser Stripe Scanning Profilometry Based on Microelectromechanical Systems Scanning Mirror Projection. . | Micromachines , 2019 , 10 (1) .
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Hybrid 3D Shape Measurement Using the MEMS Scanning Micromirror. PubMed SCIE
期刊论文 | 2019 , 10 (1) | Micromachines
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A surface with large reflection variations represents one of the biggest challenges for optical 3D shape measurement. In this work, we propose an alternative hybrid 3D shape measurement approach, which combines the high accuracy of fringe projection profilometry (FPP) with the robustness of laser stripe scanning (LSS). To integrate these two technologies into one system, first, we developed a biaxial Microelectromechanical Systems (MEMS) scanning micromirror projection system. In this system, a shaped laser beam serves as a light source. The MEMS micromirror projects the laser beam onto the object surface. Different patterns are produced by controlling the laser source and micromirror jointly. Second, a quality wised algorithm is delivered to develop a hybrid measurement scheme. FPP is applied to obtain the main 3D information. Then, LSS helps to reconstruct the missing depth guided by the quality map. After this, the data fusion algorithm is used to merge and output complete measurement results. Finally, our experiments show significant improvement in the accuracy and robustness of measuring a surface with large reflection variations. In the experimental instance, the accuracy of the proposed method is improved by 0.0278 mm and the integrity is improved by 83.55%.

Keyword :

fringe projection quality map large reflection variations laser stripe scanning MEMS scanning micromirror

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GB/T 7714 Yang Tao , Zhang Guanliang , Li Huanhuan et al. Hybrid 3D Shape Measurement Using the MEMS Scanning Micromirror. [J]. | Micromachines , 2019 , 10 (1) .
MLA Yang Tao et al. "Hybrid 3D Shape Measurement Using the MEMS Scanning Micromirror." . | Micromachines 10 . 1 (2019) .
APA Yang Tao , Zhang Guanliang , Li Huanhuan , Zhou Xiang . Hybrid 3D Shape Measurement Using the MEMS Scanning Micromirror. . | Micromachines , 2019 , 10 (1) .
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Microstructure, Chemical Composition and Local Corrosion Behavior of a Friction Stud Welding Joint EI SCIE Scopus
期刊论文 | 2018 , 27 (2) , 666-676 | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
WoS CC Cited Count: 3 SCOPUS Cited Count: 3
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In this paper, friction stud welding technology was used to join a stud and base metal, which were composed of X65 steel. The scanning vibrating electrode technique (SVET) and localized electrochemical impedance spectroscopy (LEIS) were used to investigate the localized corrosion behaviors of the welded joint. Scanning electron microscopy, metallographic microscopy and a micro-hardness tester were used to observe the microstructure and measure the hardness of the welded sample. Raman spectrometry and energy-dispersive spectrometry were used to measure the composition of the weldment before and after corrosion, respectively. The results show that there are the maximum micro-hardness and the densest microstructure in the welded zone compared with the other zones. In addition, alpha-Fe2O3 and Fe3O4 are present in the welded zone. The SVET and LEIS data indicate that the welded zone has the lowest current density and the largest impedance due to the presence of iron oxides and the densest microstructure, thus showing the excellent corrosion resistance. The relationship among microstructure, micro-hardness, chemical composition and local electrochemical behavior was discussed.

Keyword :

Raman LEIS SVET X65 steel friction stud welding

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GB/T 7714 Ma, Huijuan , Gu, Yanhong , Gao, Hui et al. Microstructure, Chemical Composition and Local Corrosion Behavior of a Friction Stud Welding Joint [J]. | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2018 , 27 (2) : 666-676 .
MLA Ma, Huijuan et al. "Microstructure, Chemical Composition and Local Corrosion Behavior of a Friction Stud Welding Joint" . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 27 . 2 (2018) : 666-676 .
APA Ma, Huijuan , Gu, Yanhong , Gao, Hui , Jiao, Xiangdong , Che, Juntie , Zeng, Qunfeng . Microstructure, Chemical Composition and Local Corrosion Behavior of a Friction Stud Welding Joint . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2018 , 27 (2) , 666-676 .
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Single particle train ordering in microchannel based on inertial and vortex effects EI SCIE Scopus
期刊论文 | 2018 , 28 (6) | JOURNAL OF MICROMECHANICS AND MICROENGINEERING
WoS CC Cited Count: 1 SCOPUS Cited Count: 2
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Abstract :

A new microfluidic device for microparticle focusing and ordering in a single particle train is reported. The particle focusing and ordering are based on inertial and vortex effects in a microchannel with a series of suddenly contracted and widely expanded structures on one side. In the suddenly contracted regions, particles located near the contracted structures are subjected to a strong wall-effect lift force and momentum-change-induced inertial force due to the highly curved trajectory, migrating to the straight wall. A horizontal vortex is generated downstream of the contracted structure, which prevents the particle from getting close to the wall. In the widely expanded regions, the streamline is curved and no vortex is generated. The shear-gradient lift force and the momentum-change-induced inertial force are dominant for particle lateral migration, driving particles towards the wall of the expanded structures. Eventually, particles are focused and ordered in a single particle train by the combination effects of the inertial forces and the vortex. In comparison with other single-stream particle focusing methods, this device requires no sheath flow, is easy for fabrication and operation, and can work over a wide range of Reynolds numbers from 19.1-142.9. The highly ordered particle chain could be potentially utilized in a variety of lab-chip applications, including micro-flow cytometer, imaging and droplet-based cell entrapment.

Keyword :

vortex particle train particle focusing inertial effect microchannel

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GB/T 7714 Fan, Liang-Liang , Yan, Qing , Zhe, Jiang et al. Single particle train ordering in microchannel based on inertial and vortex effects [J]. | JOURNAL OF MICROMECHANICS AND MICROENGINEERING , 2018 , 28 (6) .
MLA Fan, Liang-Liang et al. "Single particle train ordering in microchannel based on inertial and vortex effects" . | JOURNAL OF MICROMECHANICS AND MICROENGINEERING 28 . 6 (2018) .
APA Fan, Liang-Liang , Yan, Qing , Zhe, Jiang , Zhao, Liang . Single particle train ordering in microchannel based on inertial and vortex effects . | JOURNAL OF MICROMECHANICS AND MICROENGINEERING , 2018 , 28 (6) .
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A Novel Method for Extracting Steryl Glucosides From Soy Lecithin SCIE Scopus
期刊论文 | 2018 , 120 (2) | EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
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In this study, a novel method utilizing enzyme and involving simple solvent extraction steps, is developed to yield an extract with high content of steryl glucosides (SG) and acyl steryl glucosides (ASG) from soy lecithin - the by-product of vegetable oil refining. Phospholipase A(1) is used to convert phospholipids in soy lecithin into more hydrophilic hydrolysates, from which SG and ASG are separated by solvent extractions. A 3x3 full factorial design is employed to investigate the effects of two parameters (enzyme dose and reaction time) on three responses (yield of extract, SG/ASG content of extract, and recovery of SG/ASG). There are significant enzyme dose - reaction time interaction effects on all the responses, except for yield of extract. The highest SG (including ASG) content of more than 90% in the extract is achieved at enzyme dose of 0.03g and reaction time of 16h, where the yield of extract obtained is 1.43%.Practical Applications: Conventionally, steryl glucosides and acyl steryl glucosides are isolated from lipid extract and purified by chromatographic methods, which result in a small amount of high purity steryl glucosides and acyl steryl glucosides, and thus is not economic to scale up. The method revealed in this study employed an enzymatic reaction followed by simple solvent extractions, and can be easily scaled up to produce high purity steryl glucosides and acyl steryl glucosides, making them more affordable for researchers. In addition, the method also presents a new application for soy lecithin or lecithin of other plant origins, whose current applications are mostly related to the main component-phospholipids. In this study, a novel method utilizing enzyme and involving simple solvent extraction steps is developed to yield an extract with high content of steryl glucosides (SG) and acyl steryl glucosides (ASG) from soy lecithin - the by-product of vegetable oil refining.

Keyword :

steryl glucosides phospholipase acyl steryl glucosides soy lecithin

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GB/T 7714 Xie, Meizhen , Zhao, Hong . A Novel Method for Extracting Steryl Glucosides From Soy Lecithin [J]. | EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY , 2018 , 120 (2) .
MLA Xie, Meizhen et al. "A Novel Method for Extracting Steryl Glucosides From Soy Lecithin" . | EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY 120 . 2 (2018) .
APA Xie, Meizhen , Zhao, Hong . A Novel Method for Extracting Steryl Glucosides From Soy Lecithin . | EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY , 2018 , 120 (2) .
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Free-standing, flexible beta-Ni(OH)(2)/electrochemically-exfoliated graphene film electrode for efficient oxygen evolution EI SCIE Scopus
期刊论文 | 2018 , 433 , 88-93 | APPLIED SURFACE SCIENCE
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

The oxidation of water into molecular oxygen (oxygen evolution reaction, OER) is a pivotal reaction in many energy conversion devices. The high cost of IrO2, however, seriously hinder its large-scale applications in water oxidation. Here, we have at first reported a free-standing and flexible film electrode consisting of 2D beta-Ni(OH)(2)/electrochemically-exfoliated graphene hybrid nanosheets (NiG-2), which is synthesized by a solvothermal reaction and an assembly process. The as-obtained NiG-2 film electrode exhibited an excellent electrocatalytic OER activity with an extremely low OER onset overpotential of similar to 250 mV in a 1 M KOH aqueous solution, which is lower than these of the commercial Ir/C (370 mV at 10 mA cm(-2)) catalyst. (C) 2017 Elsevier B.V. All rights reserved.

Keyword :

Film electrode Flexible Free-standing Graphene Nickel hydroxide Water oxidation

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GB/T 7714 Wang, Lanlan , Zhang, Jian , Jiang, Weitao et al. Free-standing, flexible beta-Ni(OH)(2)/electrochemically-exfoliated graphene film electrode for efficient oxygen evolution [J]. | APPLIED SURFACE SCIENCE , 2018 , 433 : 88-93 .
MLA Wang, Lanlan et al. "Free-standing, flexible beta-Ni(OH)(2)/electrochemically-exfoliated graphene film electrode for efficient oxygen evolution" . | APPLIED SURFACE SCIENCE 433 (2018) : 88-93 .
APA Wang, Lanlan , Zhang, Jian , Jiang, Weitao , Zhao, Hong , Liu, Hongzhong . Free-standing, flexible beta-Ni(OH)(2)/electrochemically-exfoliated graphene film electrode for efficient oxygen evolution . | APPLIED SURFACE SCIENCE , 2018 , 433 , 88-93 .
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An investigation into the transient behavior of journal bearing with surface texture based on fluid-structure interaction approach EI SCIE Scopus
期刊论文 | 2018 , 118 , 246-255 | TRIBOLOGY INTERNATIONAL
WoS CC Cited Count: 7 SCOPUS Cited Count: 8
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Abstract :

The influence of surface texture on the performance of the journal bearing operating under the transient condition is investigated by a fluid-structure interaction (FSI) approach. The key parameter of the current work is the displacement of the journal as well as the eccentricity ratio which better represents the actual operation of a journal bearing than the traditional approaches that rely on the steady state assumption. The results indicate that depending on its position in the circumferential direction, a surface texture may either enhance or impair the performance of a journal bearing in terms of the generation of the load-carrying capacity.

Keyword :

Journal bearing Fluid-structure interaction (FSI) Eccentricity ratio Transient condition Surface texture

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GB/T 7714 Lin, Qiyin , Bao, Qingkang , Li, Kejia et al. An investigation into the transient behavior of journal bearing with surface texture based on fluid-structure interaction approach [J]. | TRIBOLOGY INTERNATIONAL , 2018 , 118 : 246-255 .
MLA Lin, Qiyin et al. "An investigation into the transient behavior of journal bearing with surface texture based on fluid-structure interaction approach" . | TRIBOLOGY INTERNATIONAL 118 (2018) : 246-255 .
APA Lin, Qiyin , Bao, Qingkang , Li, Kejia , Khonsari, M. M. , Zhao, Hong . An investigation into the transient behavior of journal bearing with surface texture based on fluid-structure interaction approach . | TRIBOLOGY INTERNATIONAL , 2018 , 118 , 246-255 .
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Gas emission source term estimation with 1-step nonlinear partial swarm optimization-Tikhonov regularization hybrid method EI SCIE Scopus CSCD
期刊论文 | 2018 , 26 (2) , 356-363 | CHINESE JOURNAL OF CHEMICAL ENGINEERING
WoS CC Cited Count: 2 SCOPUS Cited Count: 2
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Abstract :

Source term identification is very important for the contaminant gas emission event. Thus, it is necessary to study the source parameter estimation method with high computation efficiency, high estimation accuracy and reasonable confidence interval. Tikhonov regularization method is a potential good tool to identify the source parameters. However, it is invalid for nonlinear inverse problem like gas emission process. 2-step nonlinear and linear PSO (partial swarm optimization)-Tikhonov regularization method proposed previously have estimated the emission source parameters successfully. But there are still some problems in computation efficiency and confidence interval. Hence, a new 1-step nonlinear method combined Tikhonov regularization and PSO algorithm with nonlinear forward dispersion model was proposed. First, the method was tested with simulation and experiment cases. The test results showed that 1-step nonlinear hybrid method is able to estimate multiple source parameters with reasonable confidence interval. Then, the estimation performances of different methods were compared with different cases. The estimation values with 1-step nonlinear method were close to that with 2-step nonlinear and linear PSO-Tikhonov regularization method. 1-step nonlinear method even performs better than other two methods in some cases, especially for source strength and downwind distance estimation. Compared with 2-step nonlinear method, 1-step method has higher computation efficiency. On the other hand, the confidence intervals with the method proposed in this paper seem more reasonable than that with other two methods. Finally, single PSO algorithm was compared with 1-step nonlinear PSO-Tikhonov hybrid regularization method. The results showed that the skill scores of 1-step nonlinear hybrid method to estimate source parameters were close to that of single PSO method and even better in some cases. One more important property of 1-step nonlinear PSO-Tikhonov regularization method is its reasonable confidence interval, which is not obtained by single PSO algorithm. Therefore, 1-step nonlinear hybrid regularization method proposed in this paper is a potential good method to estimate contaminant gas emission source term. (C) 2017 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

Keyword :

Source identification Inverse problem Parameter regularization method Parameter estimation

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GB/T 7714 Ma, Denglong , Tan, Wei , Zhang, Zaoxiao et al. Gas emission source term estimation with 1-step nonlinear partial swarm optimization-Tikhonov regularization hybrid method [J]. | CHINESE JOURNAL OF CHEMICAL ENGINEERING , 2018 , 26 (2) : 356-363 .
MLA Ma, Denglong et al. "Gas emission source term estimation with 1-step nonlinear partial swarm optimization-Tikhonov regularization hybrid method" . | CHINESE JOURNAL OF CHEMICAL ENGINEERING 26 . 2 (2018) : 356-363 .
APA Ma, Denglong , Tan, Wei , Zhang, Zaoxiao , Hu, Jun . Gas emission source term estimation with 1-step nonlinear partial swarm optimization-Tikhonov regularization hybrid method . | CHINESE JOURNAL OF CHEMICAL ENGINEERING , 2018 , 26 (2) , 356-363 .
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Ultrasound improving the physical stability of oil-in-water emulsions stabilized by almond proteins SCIE PubMed Scopus
期刊论文 | 2018 , 98 (11) , 4323-4330 | JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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BACKGROUNDVegetable proteins are increasingly used to stabilize oil-in-water (O/W) emulsions. However, emulsions are thermodynamically unstable. Recently, high-intensity ultrasound (US) has been used to enhance the stability of emulsions. For these reasons, and considering almond (Prunus dulcis L.) as a good source of high-quality proteins, the aim of this work was to investigate the effect of US treatment on the stability of pre-emulsification O/W emulsions coated with almond protein isolate (API). RESULTSThe influence of API concentration (0.25-2.0gL(-1)), ion strength (0-500mmolL(-1) NaCl), and pH (3.0-7.0) on the stability of US-treated emulsions was evaluated. US treatment (200-600W, 25kHz, 15min) led to a significant reduction in the particles size of droplets in emulsions, increased critical osmotic pressure and additional protein interfacial adsorption, and thus the formation of more stable emulsions. The more unfolded and random coil structures of the proteins were detected at higher US power, facilitating protein interfacial adsorption. Increasing API concentrations resulted in higher stability of US-treated emulsions against untreated counterparts. The US-treated emulsions were more resistant to salt than untreated samples. In the range from pH3.0 to7.0, US treatment also enhanced the physical stability of emulsions compared with untreated emulsions. CONCLUSIONUS technology could be applied to produce more stable O/W food emulsions stabilized by proteins. (c) 2018 Society of Chemical Industry

Keyword :

physical stability oil-in-water emulsion high-intensity ultrasound almond protein isolate interfacial adsorption

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GB/T 7714 Zhu, Zhenbao , Zhao, Cui , Yi, Jianhua et al. Ultrasound improving the physical stability of oil-in-water emulsions stabilized by almond proteins [J]. | JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE , 2018 , 98 (11) : 4323-4330 .
MLA Zhu, Zhenbao et al. "Ultrasound improving the physical stability of oil-in-water emulsions stabilized by almond proteins" . | JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 98 . 11 (2018) : 4323-4330 .
APA Zhu, Zhenbao , Zhao, Cui , Yi, Jianhua , Cui, Leqi , Liu, Ning , Cao, Yungang et al. Ultrasound improving the physical stability of oil-in-water emulsions stabilized by almond proteins . | JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE , 2018 , 98 (11) , 4323-4330 .
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