Synthesis of Thermoplastic Starch-Bacterial Cellulose Nanocomposites via<i>in situ</i>Fermentation

Osorio, Marlon; Restrepo, David T.; Velásquez-Cock, J.; Zuluaga, Robín; Rojo, Úrsula María Montoya; Rojas, Orlando J.; Gañán, Piedad; Marín, Diana Cayuela; Castro, Cristina

doi:10.5935/0103-5053.20140146

Cited by 11 publications

(17 citation statements)

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“…Furthermore, good compatibility between the reinforcing BC and the TPS matrix (good fiber‐matrix bonding) is observed based on the absence of pulling out BC nanoribbons. These results are in agreement with previous studies showing that the use of in situ BC reinforcement provided a smooth TPS fracture surface, while for nanocomposites, the BC ribbons were homogeneously distributed throughout the matrix, and strong interfacial adhesion was observed between the BC and the TPS matrix . Nonsignificant variations on the edge of the fracture surfaces were observed, possibly related to the degree of swelling of the films during the test.…”

Section: Resultssupporting

confidence: 92%

Starch and Starch/Bacterial Nanocellulose Films as Alternatives for the Management of Minimally Processed Mangoes

et al. 2018

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Improving the storage of minimally processed mangoes represents a substantial challenge for packaging. For this purpose, thermoplastic starch (TPS) and its composites with bacterial cellulose nanoribbons (TPS/BC) are used as wrapping materials to prolong the shelf life of minimally processed mangoes. Commercial polyvinyl chloride stretch (PVC) films and unwrapped mangoes are used as the controls. The samples were stored at 75% RH and 5 °C for five and ten days. The films are removed after storage and subjected to mechanical tests and physical evaluation. The weight loss, firmness, total soluble solids, and total titratable acidity in the mangoes are tested to monitor fruit ripening. ATR‐FTIR is used as an alternative nondestructive technique to examine fruit quality through changes in the sugar and organic acid contents. The results showed that TPS films reduced mango weight loss until the fifth day (2.84%), whereas the reduction in weight loss seen in mangoes wrapped with TPS/BC is even lower (13.18%). Therefore, even though both TPS and TPS/BC films can be used to prolong the fruit shelf life for five days, the latter is more effective. The elongations at break of both film samples remained constant over time, which means that these films can be used under stress conditions.

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Section: Resultssupporting

confidence: 92%

Starch and Starch/Bacterial Nanocellulose Films as Alternatives for the Management of Minimally Processed Mangoes

et al. 2018

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“…BNC has been proven to be nontoxic and highly hydrophilic like human ECM . BNC has good mechanical performance, and furthermore, its processability allows its configuration into several shapes and sizes, including porous 3D scaffolds …”

Section: Introductionmentioning

confidence: 99%

“…3D porous BNC scaffolds have been developed using starch, agarose and paraffin particles as porogens . Agarose and starch have shown deficiencies due to their partial solubilization in the medium and their degradation at low pH, respectively; in turn, the paraffin has shown more stability and processing facilities . Nevertheless, the strategies reported to develop 3D BNC scaffolds using paraffin particles are time‐consuming because they include the use of NaOH, shaking conditions and exchanges between surfactants and ethanol overnight for 14 days.…”

Section: Introductionmentioning

confidence: 99%

“…[13][14][15] BNC has been proven to be nontoxic 16 and highly hydrophilic like human ECM. 15,17 BNC has good mechanical performance, [18][19][20][21] and furthermore, its processability allows its configuration into several shapes and sizes, including porous 3D scaffolds. 13,15,22 Most of the BNC reports for tissue engineering and regenerative medicine are thought from two-dimensional (2D) biomaterials, taking advantage of the naturally occurring BNC shape.…”

Section: Introductionmentioning

confidence: 99%

“…14,22,27,28 Agarose and starch have shown deficiencies due to their partial solubilization in the medium and their degradation at low pH, respectively; in turn, the paraffin has shown more stability and processing facilities. 20,[29][30][31] Nevertheless, the strategies reported to develop 3D BNC scaffolds using paraffin particles are time-consuming because they include the use of NaOH, shaking conditions and exchanges between surfactants and ethanol overnight for 14 days. These reagents and processing conditions can modify the structure and properties of the BNC, which affect its application as a scaffold for cell growth.…”

Section: Introductionmentioning

confidence: 99%

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Development of novel three‐dimensional scaffolds based on bacterial nanocellulose for tissue engineering and regenerative medicine: Effect of processing methods, pore size, and surface area

Osorio

Fernández‐Morales

Gañán

et al. 2018

J Biomedical Materials Res

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Despite the efforts focused on manufacturing biological engineering scaffolds for tissue engineering and regenerative medicine, a biomaterial that meets the necessary characteristics for these applications has not been developed to date. Bacterial nanocellulose (BNC) is an outstanding biomaterial for tissue engineering and regenerative medicine; however, BNC's applications have been focused on two‐dimensional (2D) medical devices, such as wound dressings. Given the need for three‐dimensional (3D) porous biomaterials, this work evaluates two methods to generate (3D) BNC scaffolds. The structural characteristics and physicochemical, mechanical, and cell behaviour properties were evaluated. Likewise, the effects of the pore size and surface area in the mechanical performance of BNC biomaterials and their cell response in a fibroblast cell line are discussed for the first time. In this study, a new method is proposed for the development of 3D BNC scaffolds using paraffin wax. This new method is less time‐consuming, more robust in removing the paraffin and less aggressive toward the BNC microstructure. Moreover, the biomaterial had regular porosity with good mechanical behaviour; the cells can adhere and increase in number without overcrowding. Regarding the pore size and surface area, highly interconnected porosities (measuring approximately 60 μm) and high surface area are advantageous for the biomaterial's mechanical properties and cell behaviour. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 348–359, 2019.

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Polysaccharide nanomaterial reinforced starch nanocomposites: A review

Dufresne

Castaño

2016

Starch Stärke

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Non-biodegradable materials have caused serious environmental problems due to their inappropriate discard. Biodegradable and renewable polymers (e.g., polysaccharides), when reinforced with nanostructures, have been used to produce novel, efficient and eco-friendly materials with adequate thermo-mechanical properties as alternatives to replace conventional materials. The main advantages of fillers extracted from renewable sources in comparison with inorganic fillers are their reinforcing capability, low energy consumption, high specific mechanical performance, abundance, low density, and biodegradability. Reinforcing starch with polysaccharide nanoparticles is an appealing approach since both components are polar by nature and no compatibilization is required. These characteristics make them ideal candidates for the processing of polymer nanocomposites and their use in different applications such as food packaging, medical and pharmaceutical. Acid hydrolysis is the main strategy for preparing polysaccharide nanoparticles. This review summarizes the current knowledge on the preparation, characterization and properties of starch reinforced with polysaccharide nanomaterials. Future research needs in the area of polysaccharide nanomaterials are outlined.

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Synthesis of Thermoplastic Starch-Bacterial Cellulose Nanocomposites viain situFermentation

Cited by 11 publications

References 1 publication

Starch and Starch/Bacterial Nanocellulose Films as Alternatives for the Management of Minimally Processed Mangoes

Starch and Starch/Bacterial Nanocellulose Films as Alternatives for the Management of Minimally Processed Mangoes

Development of novel three‐dimensional scaffolds based on bacterial nanocellulose for tissue engineering and regenerative medicine: Effect of processing methods, pore size, and surface area

Polysaccharide nanomaterial reinforced starch nanocomposites: A review

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