Preparation and Characterization of Thermoplastic Soy Protein Isolate

A soybean protein isolate (SPI) main chain grafted with methyl acrylate (MA) and methyl methacrylate (MMA) as a new thermoplastic copolymer (T-SPI) was prepared. The properties of the material were evaluated with DSC, FT-IR, and rotary rheometry. The results indicated that the monomer was grafted on SPI successfully. The T-SPI had a glass transition at about 66°C. T-SPI was a typical viscoelastic material, and its elastic ratio was 65.27%, the shear viscosity was very sensitive to temperature and the flowability of T-SPI was regulated by temperature.

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Effect of Ferulic Acid and its Oxide on Qualities of Soy Protein-Isolate/Chitosan Composite Films

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.716-717.24 ◽

2014 ◽

Vol 716-717 ◽

pp. 24-27 ◽

Cited By ~ 1

Author(s):

Chao Zhang ◽

Xiao Fei Guo ◽

Yue Ma ◽

Xiao Yan Zhao

Keyword(s):

Ferulic Acid ◽

Soy Protein ◽

Soybean Protein ◽

Soy Protein Isolate ◽

Composite Films ◽

Protein Isolate ◽

Soybean Protein Isolate ◽

Band Energy ◽

Chitosan Composite ◽

Thermal Stability Of

The effect of ferulic acid (FA) and oxidized ferulic acid (OFA) on performances of the soybean protein-isolate/chitosan composite films was evaluated. The FA and OFA showed an excellent compatibility and miscibility of in the composite films, and leaded the surface more compact and smooth. The FA and OFA also enhanced the thermal stability of the composite films. The FA and OFA enhanced the performance of the composite films by raising the band energy of the crosslinked molecules.

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Graft Copolymerization of Soybean Protein Isolate and Methyl Methacrylate

Materials Science Forum ◽

10.4028/www.scientific.net/msf.695.33 ◽

2011 ◽

Vol 695 ◽

pp. 33-36

Author(s):

Yan Lu ◽

Xue Gang Luo ◽

Xiao Yan Lin

Keyword(s):

Methyl Methacrylate ◽

Soy Protein ◽

Graft Copolymerization ◽

Soybean Protein ◽

Ammonium Persulfate ◽

Protein Isolate ◽

Optimal Conditions ◽

Reaction Conditions ◽

Soybean Protein Isolate ◽

Ft Ir

New thermoplastic soy protein isolated (SPI) and methyl methacrylate (MMA) copolymers (T-SPI) were prepared using graft copolymerization and initiated with ammonium persulfate (APS). The reaction conditions such as initiator concentration and temperature on the graft percentage (GP) were investigated. The single factor experimental showed that the optimal conditions of the graft reaction. The products were characterized by means of FT-IR and DSC. The results indicated that the monomer was grafted successfully on SPI and the T-SPI had a glass transition at 122°C, and the most important, the water absorption of materials declined obviously.

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Thermal Stability of Soybean Protein Isolate-Based Oleic Acid/Stearic Acid Blend Edible Films

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.469.171 ◽

2013 ◽

Vol 469 ◽

pp. 171-174 ◽

Cited By ~ 1

Author(s):

Ning Zhang ◽

Si Yao Sui ◽

Zhe Wang ◽

Zhong Su Ma

Keyword(s):

Thermal Stability ◽

Oleic Acid ◽

Stearic Acid ◽

Soybean Protein ◽

Soy Protein Isolate ◽

Edible Films ◽

Protein Isolate ◽

Soybean Protein Isolate ◽

The Matrix ◽

Thermal Stability Of

Edible films were prepared using soy protein isolate (4g/100g), oleic acid (0-2g/100g) and stearic acid (0-2g/100g). Effects of the type and ratio of fatty acids (oleic acid and stearic acid) on the thermal properties of soybean protein isolate-based films were investigated. The results indicated that the addition of oleic acid and stearic acid take a significant effect on the thermal stability of soybean protein isolate-based films, as may attribute to that oleic acid is an amphiphilic substance that interacts with both polar and hydrophobic sites on proteins, thus it could improve the functional properties of the films. Besides, the solid state and hydrophobic nature of stearic acid could help limit water diffusion in the matrix more efficiently when it is well-integrated in the matrix through the surfactant action of oleic acid.

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