Improvement of Mechanical and Barrier Properties of Soy Protein Isolate Films using Montmorillonite and preservatives

2016 ◽  
Author(s):  
Ki Myong Kim ◽  
Keyword(s):  
Soy Protein ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate

scholarly journals Ultrasonic-modified montmorillonite uniting ethylene glycol diglycidyl ether to reinforce protein-based composite films

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 433-442
Author(s):  
Hua He ◽  
Rui-jing Jia ◽  
Kai-qiang Dong ◽  
Jia-wen Huang ◽  
Zhi-yong Qin
Keyword(s):  
Ethylene Glycol ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Composite Films ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Diglycidyl Ether ◽  
X Ray Diffraction ◽  
Protein Film ◽  
Modified Montmorillonite

Abstract A novel biodegradable protein-based material (UMSPIE) that consists of natural polymer soy protein isolate (SPI), ultrasonic-modified montmorillonite (UMMT), and ethylene glycol diglycidyl ether (EGDE) was produced by solution casting. Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG), and scanning electron microscopy (SEM) were used to characterize the chemical structure and micro-morphologies of as-synthesized protein-based composite films. The results showed that the interlayer structure of MMT was destroyed by ultrasonic treatment, and the hydrogen bonding between SPI chains and the ultrasound-treated MMT plates was enhanced. The synergistic effect of UMMT and EGDE on SPI molecules made the network structure of the UMSPIE film denser. In addition, the mechanical and barrier properties of the as-synthesized films were explored. Compared with pure soy protein film, the tensile strength of the UMSPIE film has an increase of 266.82% (increasing from 4.4 to 16.14 MPa). From the above, the modified strategy of layered silicates filling combining crosslinking agents is considered as an effective method to improve the functional properties of bio-based polymer composites.

Mechanical and Physical Properties of Soy Protein Films with pH-Modified Microstructures

2008 ◽  
Vol 14 (2) ◽  
pp. 119-125 ◽  
Author(s):  
A.N. Mauri ◽  
M.C. Añón
Keyword(s):  
Soy Protein ◽  
Disulfide Bonds ◽  
Mechanical Test ◽  
Soy Protein Isolate ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Vapor Permeability ◽  
Protein Films ◽  
The One

Mechanical, physical, and barrier properties of films obtained from soy protein isolate solutions at different pH were studied and correlated with the structural properties and the microstructure of films. Films obtained at pH 2 and 11, which had denser microstructures and a higher amount of disulfide bonds, showed a higher tensile strength — of about 1.05 MPa — and a higher Young's modulus — of at least 0.15MPa — than the one at pH 8. However, films formed at alkaline pH (8 and 11) exhibited a higher deformation than films at pH 2 — by about 70%. The presence of at least a protein fraction in native state allowed macromolecules to unfold during the mechanical test, reaching greater deformation before breaking. Acidic films exhibited higher water vapor permeability — of about 7 × 10-11 g/m s Pa — and water content — of about 1.5% — and a lower glass transition temperature — of at least 15 °C — than basic ones, due to their higher hydrophilic nature.

Mechanical and water barrier properties of soy protein isolate film incorporated with gelatin

2012 ◽  
Vol 29 (2) ◽  
pp. 174-188 ◽  
Author(s):  
Huiyu Bai ◽  
Jing Xu ◽  
Ping Liao ◽  
Xiaoya Liu
Keyword(s):  
Soy Protein ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Water Barrier

Mechanical and barrier properties of biodegradable soy protein isolate-based films coated with polylactic acid

LWT ◽  
2007 ◽  
Vol 40 (2) ◽  
pp. 232-238 ◽  
Author(s):  
Jong-Whan Rhim ◽  
Jun Ho Lee ◽  
Perry K.W. Ng
Keyword(s):  
Polylactic Acid ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate

Mechanical and barrier properties of soy protein isolate films plasticized with a mixture of glycerol and dendritic polyglycerol

2015 ◽  
Vol 132 (17) ◽  
Author(s):  
Mojca Božič ◽  
Martina Majerič ◽  
Matjaž Denac ◽  
Vanja Kokol
Keyword(s):  
Soy Protein ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate

Preparation and Characterization of Soy Protein Isolate Films Incorporating Modified Nano-TiO2

2019 ◽  
Vol 15 (7) ◽  
Author(s):  
Yuanyuan Liu ◽  
Lina Xu ◽  
Rui Li ◽  
Huangjiang Zhang ◽  
Wenhui Cao ◽  
...  
Keyword(s):  
Soy Protein ◽  
Soy Protein Isolate ◽  
Antimicrobial Properties ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Vapor Permeability ◽  
Force Microscopy ◽  
Atomic Force ◽  
Nano Titanium Dioxide

AbstractAntimicrobial films were prepared by incorporating nano-titanium dioxide (TiO2) modified by silane into soy protein isolate (SPI) films. The effects of different concentrations of modified nano-TiO2 (TiO2-NM) on the physical properties, antimicrobial properties, and microstructure of the SPI-based films were investigated. Attenuated total reflectance Fourier-transform infrared spectroscopy indicated that the interaction between the SPI and TiO2-NM was via hydrogen bonds. Scanning electron microscopy and atomic force microscopy both showed that the microstructure of SPI-based films with TiO2-NM was compact. Moreover, as the content of TiO2-NM increased from 0 to 1.5 g/100 mL, the water vapor permeability and oxygen permeability were decreased from 5.43 to 4.62 g· mm/m2d· kPa and 0.470 to 0.110 g· cm−2· d−1, respectively. An increase from 6.67 MPa to 14.56 MPa in tensile strength and a decrease from 36.53% to 27.62% in elongation at break indicate the optimal mechanical properties of all groups. TiO2-NM films had excellent UV barrier properties, with a whiter surface with increasing TiO2-NM content. In addition, the SPI-based films with TiO2-NM showed antimicrobial activity, as evidenced by an inhibitory zone increasing from 0 to 27.34 mm. Therefore, TiO2-NM can be used as an antimicrobial agent in packaging films.

Effect of oleic acid–beeswax mixtures on mechanical, optical and water barrier properties of soy protein isolate based films

2009 ◽  
Vol 91 (4) ◽  
pp. 509-515 ◽  
Author(s):  
F. María Monedero ◽  
Maria José Fabra ◽  
Pau Talens ◽  
Amparo Chiralt
Keyword(s):  
Oleic Acid ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Water Barrier

Gas-Selective Permeability of Soy Protein Isolate Film

2013 ◽  
Vol 666 ◽  
pp. 17-22
Author(s):  
Zhe Wang ◽  
Xiao Xuan Wang ◽  
Jing Zhou ◽  
Zhong Su Ma
Keyword(s):  
Carbon Dioxide ◽  
Soy Protein ◽  
Food Systems ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Permeability Coefficients ◽  
Microwave Assisted ◽  
Selective Permeability

Gas-selective permeability of films obtained from soy protein isolate (SPI) solutions at pH 12 was discussed. The modification treatments (ultrasonic, microwave and ultrasonic/microwave assisted treatment) was carried out to regulate oxygen and carbon dioxide barrier properties of SPI films, further control gas-selective permeability of SPI films in this work. In addition, all films obtained were flexible and transparent. Gas-selective permeability coefficients of SPI film was from 0.39 to 1.25, as indicated that gas-selective permeability of SPI film could be regulated according to the actual needs of food systems.

Carbon nanoparticles/soy protein isolate bio-films with excellent mechanical and water barrier properties

2016 ◽  
Vol 82 ◽  
pp. 133-140 ◽  
Author(s):  
Ying Li ◽  
Hui Chen ◽  
Youming Dong ◽  
Kuang Li ◽  
Li Li ◽  
...  
Keyword(s):  
Soy Protein ◽  
Carbon Nanoparticles ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Water Barrier

Effect of Temperature on Barrier Properties of Soy Protein Isolate Films

2011 ◽  
Vol 380 ◽  
pp. 270-273 ◽  
Author(s):  
Xiu Feng Ma ◽  
Mo Chen ◽  
Kai Meng ◽  
Fei Fei Li
Keyword(s):  
Water Vapour ◽  
Soy Protein ◽  
Transmission Rate ◽  
Soy Protein Isolate ◽  
Barrier Properties ◽  
Protein Isolate ◽  
Effect Of Temperature ◽  
Arrhenius Model ◽  
Influence Of Temperature On ◽  
The Relationship

The influence of temperature on oxygen and water vapour permeation in cast soy protein isolate (SPI) films was investigated at the range of 10–40° C at 50% relative humidity. At tested temperatures, the SPI films exhibited transmission rate values of 22.48–150.90 g m−2day−1and 5.67–67.48 cm3m−2day−1for water vapour and O2, respectively. The results indicated that the relationship between temperature and the oxygen/water vapour transmission rate of the SPI films followed an exponential grow curve [y=A*exp(x/B) + C]. Furthermore, the activation energy (Ea) value of the O2permeation process was calculated by fitting the Arrhenius model to the experimental data.

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