scholarly journals Bio-film Composites Composed of Soy Protein Isolate and Silk Fiber: Effect of Concentration of Silk Fiber on Mechanical and Thermal Properties

2014 ◽  
Vol 27 (5) ◽  
pp. 196-200 ◽  
Author(s):  
M.N. Prabhakar ◽  
Jung Il Song
Keyword(s):  
Thermal Properties ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Silk Fiber ◽  
Mechanical And Thermal Properties ◽  
Film Composites

Mechanical and thermal properties of microcrystalline cellulose-reinforced soy protein isolate–gelatin eco-friendly films

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 56518-56525 ◽  
Author(s):  
Chenchen Li ◽  
Jing Luo ◽  
Zhiyong Qin ◽  
Hui Chen ◽  
Qiang Gao ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Thermal Properties ◽  
Microcrystalline Cellulose ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Mechanical And Thermal Properties ◽  
Interpenetrating Network ◽  
Gelatin Films

SPI–gelatin films reinforced by MCC with hydrogen bond and interpenetrating network perform better mechanical and thermal properties.

scholarly journals High-Performance Soy Protein Isolate-Based Film Synergistically Enhanced by Waterborne Epoxy and Mussel-Inspired Poly(dopamine)-Decorated Silk Fiber

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1536
Author(s):  
Pang ◽  
Zhao ◽  
Qin ◽  
Zhang ◽  
Li
Keyword(s):  
Soy Protein ◽  
High Performance ◽  
Food Packaging ◽  
Water Resistance ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Food Preservation ◽  
Silk Fiber ◽  
13C Nuclear Magnetic Resonance ◽  
Waterborne Epoxy

It remains a great challenge to fabricate bio-based soy protein isolate (SPI) composite film with both favorable water resistance and excellent mechanical performance. In this study, waterborne epoxy emulsions (WEU), which are low-cost epoxy crosslinkers, together with mussel-inspired dopamine-decorated silk fiber (PSF), were used to synergistically improve the water resistance and mechanical properties of SPI-based film. A stable crosslinking network was generated in SPI-based films via multiple physical and chemical combinations of WEU, PSF, and soy protein matrixes, and was confirmed by attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, X-ray diffraction (XRD), and solid state 13C nuclear magnetic resonance (13C NMR). As expected, remarkable improvement in both water resistance and Young’s modulus (up to 370%) was simultaneously achieved in SPI-based film. The fabricated SPI-based film also exhibited favorable thermostability. This study could provide a simple and environmentally friendly approach to fabricate high-performance SPI-based film composites in food packaging, food preservation, and additive carrier fields.

scholarly journals Rheology and Water Absorption Properties of Alginate–Soy Protein Composites

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1807
Author(s):  
Estefanía Álvarez-Castillo ◽  
José Manuel Aguilar ◽  
Carlos Bengoechea ◽  
María Luisa López-Castejón ◽  
Antonio Guerrero
Keyword(s):  
Soy Protein ◽  
Water Solubility ◽  
Divalent Cations ◽  
Low Cost ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Guluronic Acid ◽  
Wide Range ◽  
Anionic Polysaccharides ◽  
Porous Matrices

Composite materials based on proteins and carbohydrates normally offer improved water solubility, biodegradability, and biocompatibility, which make them attractive for a wide range of applications. Soy protein isolate (SPI) has shown superabsorbent properties that are useful in fields such as agriculture. Alginate salts (ALG) are linear anionic polysaccharides obtained at a low cost from brown algae, displaying a good enough biocompatibility to be considered for medical applications. As alginates are quite hydrophilic, the exchange of ions from guluronic acid present in its molecular structure with divalent cations, particularly Ca2+, may induce its gelation, which would inhibit its solubilization in water. Both biopolymers SPI and ALG were used to produce composites through injection moulding using glycerol (Gly) as a plasticizer. Different biopolymer/plasticizer ratios were employed, and the SPI/ALG ratio within the biopolymer fraction was also varied. Furthermore, composites were immersed in different CaCl2 solutions to inhibit the amount of soluble matter loss and to enhance the mechanical properties of the resulting porous matrices. The main goal of the present work was the development and characterization of green porous matrices with inhibited solubility thanks to the gelation of alginate.

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