Structure and property of biodegradable soy protein isolate/PBAT blends

Guo, Gaofeng; Zhang, Chen; Du, Zhongjie; Zou, Wei; Tian, Huafeng; Li, Hangquan

doi:10.1016/j.indcrop.2015.06.009

Cited by 66 publications

(45 citation statements)

References 20 publications

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“…Guo et al . when evaluating the biodegradation of PBAT/isolated soybean protein (SPI) also observed that the pure polymer matrix had a low rate of biodegradation.…”

Section: Resultsmentioning

confidence: 99%

Biodegradation of mulch films from poly(butylene adipate co‐terephthalate), carnauba wax, and sugarcane residue

Oliveira

Mota

Mousinho

et al. 2019

J of Applied Polymer Sci

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Plastic mulching for agricultural purposes is a technique which began in the last century and since then its use has been perfected. The fragments of some large‐scale mulch films used may accumulate in the soil, release toxic substances, and affect soil microbial activity. The environmental problems generated by fragments of plastic films accumulated in soil have prompted the development and large‐scale use of biodegradable plastic mulch films. The aim of this work is to develop biodegradable plastic mulch films from poly(butylene adipate co‐terephthalate (PBAT), sugarcane residue, and carnauba wax and to evaluate its biodegradation when buried in soil. The films, obtained by flat extrusion, contained 2.5 and 5.0% sugarcane residue and 0 and 2.0% carnauba wax. Their biodegradation after burial in soil was monitored by mass loss, visual inspection, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Our data show biodegradation in soil to increase with sugarcane residue content and to be independent on carnauba wax addition. This behavior, confirmed by visual inspection, FTIR and SEM images, was associated with the biodegradability of lignocellulosic residues as microorganisms tend to attack this component first, thus eroding fiber/matrix interface and facilitating bio disintegration. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48240.

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“…Guo et al . when evaluating the biodegradation of PBAT/isolated soybean protein (SPI) also observed that the pure polymer matrix had a low rate of biodegradation.…”

Section: Resultsmentioning

confidence: 99%

Biodegradation of mulch films from poly(butylene adipate co‐terephthalate), carnauba wax, and sugarcane residue

Oliveira

Mota

Mousinho

et al. 2019

J of Applied Polymer Sci

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“…Within the family of biodegradable polymers, poly(butylene adipate ‐co‐ terephthalate) (PBAT) is a promising alternative due to its excellent properties for film extrusion and coatings . PBAT is an aliphatic aromatic copolyester prepared by polycondensation reaction of 1,4‐butanediol with both adipic and terephthalic acids . This polymer exhibits good thermal and mechanical properties, which can be compared with those of low‐density polyethylene (LDPE) concerning its tensile properties .…”

Section: Introductionmentioning

confidence: 99%

Influence of melt processing on biodegradable nisin‐PBAT films intended for active food packaging applications

Zehetmeyer

Meira

Scheibel

et al. 2015

J of Applied Polymer Sci

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Biodegradable poly(butylene adipate-co-terephthalate) (PBAT) films incorporated with different levels of the antimicrobial peptide nisin were developed by melt processing. Structural, morphological, thermal, mechanical, and antimicrobial properties of the films were determined. The X-ray diffraction patterns exhibited decreasing levels of intensity at 2h values as the concentration of nisin increased. Scanning electron microscopy showed a heterogeneous morphology when higher amounts of nisin were incorporated. The antimicrobial films tested presented no significant differences in the melting temperature (123-1258C), and the crystallization temperature ranged from 69 to 758C. The addition of nisin caused no significant modification in tensile strength values. However, results of Young's modulus and deformation at break differed significantly among samples. Active films demonstrated inhibition against the Gram-positive bacterium Listeria monocytogenes. These results demonstrated that PBAT/nisin films produced by melt processing present a great potential for use as active food packaging materials aiming enhanced food safety. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43212.

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“…Not only improving the protein level, the added SPI also serves as gelling and emulsification to enhance the flavor and give an elastic and soft texture. SPI is a biodegradable and nutritious material that can be used as an edible film and able to provide a polymerization process (Guo et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Improvement of Bovine Split Hide Gelatin Quality by Addition of Soy Protein Isolate Using Transglutaminase Enzyme

Wulandari

Erwanto

Pranoto

et al. 2019

Trop. Anim. Sci. J.

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Bovine split hide is the subcutis layer with the low percentage of collagen so that the quality of the gelatin is different from that of the gelatin from cattle's skin. This study aims to improve the characteristics of bovine split hide gelatin combined with soy protein isolate (SPI) using transglutaminase (TGase) enzyme as a protein cross-linking agent. The study was conducted using a completely randomized design with 3 x 3 factorial pattern consisting of three levels of a mixture of bovine split hide gelatin : SPI at the ratios of 90 : 10, 80 : 20, 70 : 30, and three concentrations of transglutaminase enzyme, i.e. 10, 20, and 30 U. The results showed that treatments significantly affected viscosity, gel strength, the moisture, ash, fat, and protein content of gelatin. Electrophoresis of gelatin protein showed bands distribution between 60-190 kDa. The amino acid profile of the gelatin was similar to that of collagen with a high level of aspartate, glutamate, cysteine, and proline. Morphology of gelatin was observed by Scanning Electronic Microscope (SEM) and showed a compact distributed collagen crosslink. The combination of gelatin bovine split hide and SPI at the ratio of 90 : 10 provides the best physicochemical characteristic.

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Structure and property of biodegradable soy protein isolate/PBAT blends

Cited by 66 publications

References 20 publications

Biodegradation of mulch films from poly(butylene adipate co‐terephthalate), carnauba wax, and sugarcane residue

Biodegradation of mulch films from poly(butylene adipate co‐terephthalate), carnauba wax, and sugarcane residue

Influence of melt processing on biodegradable nisin‐PBAT films intended for active food packaging applications

Improvement of Bovine Split Hide Gelatin Quality by Addition of Soy Protein Isolate Using Transglutaminase Enzyme

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