&lt;p&gt;Fabrication and characterization of a titanium dioxide (TiO2) nanoparticles reinforced bio-nanocomposite containing &lt;em&gt;Miswak&lt;/em&gt; (&lt;em&gt;Salvadora persica&lt;/em&gt; L.) extract – the antimicrobial, thermo-physical and barrier properties&lt;/p&gt;

Ahmadi, Raman; Tanomand, Asghar; Kazeminava, Fahimeh; Kamounah, Fadhil S.; Ayaseh, Ali; Ganbarov, Khudaverdi; Yousefi, Mehdi; Katourani, Adib; Yousefi, Bahman; Kafil, Hossein Samadi

doi:10.2147/ijn.s201626

Cited by 38 publications

(26 citation statements)

References 55 publications

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“…Corn starch Bioplastic with potential use as packaging material [23] Carboxymethyl cellulose containing miswak extract Nanocomposite with potential use as food packaging [24] Sesame protein extract Films for food active packaging applications and photo-decolorization purposes [25] Corn starch/PVA Potential application in food and non-food industries as UV shielding packaging materials [26] Chitosan/potato-starch Films with potential use as food packaging [27] Chitosan/starch Films with potential use as food packaging [28] Cellulose…”

Section: Methodsmentioning

confidence: 99%

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Chitosan-TiO2: A Versatile Hybrid Composite

et al. 2020

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In recent years, a strong interest has emerged in hybrid composites and their potential uses, especially in chitosan-titanium dioxide (CS-TiO 2 ) composites, which have interesting technological properties and applications. This review describes the reported advantages and limitations of the functionalization of chitosan by adding TiO 2 nanoparticles. Their effects on structural, textural, thermal, optical, mechanical, and vapor barrier properties and their biodegradability are also discussed. Evidence shows that the incorporation of TiO 2 onto the CS matrix improves all the above properties in a dose-dependent manner. Nonetheless, the CS-TiO 2 composite exhibits great potential applications including antimicrobial activity against bacteria and fungi; UV-barrier properties when it is used for packaging and textile purposes; environmental applications for removal of heavy metal ions and degradation of diverse water pollutants; biomedical applications as a wound-healing material, drug delivery system, or by the development of biosensors. Furthermore, no cytotoxic effects of CS-TiO 2 have been reported on different cell lines, which supports their use for food and biomedical applications. Moreover, CS-TiO 2 has also been used as an anti-corrosive material. However, the development of suitable protocols for CS-TiO 2 composite preparation is mandatory for industrial-scale implementation.Materials 2020, 13, 811 2 of 27 they are synthesized by different methods (intercalation of the polymer, sol-gel, hydrothermal, electro-deposition, chemical and physical vapor deposition, suspension and liquid phase deposition). These methods are effective to enhance the technological and mechanical properties of each individual component and also reveal new functionalities [1,3]. Currently, there is a special interest in combining natural polymers such as chitosan (CS) with inorganic materials like titanium dioxide (TiO 2 ) to obtain hybrid composites (CS-TiO 2 ) with beneficial properties [3][4][5][6].Chitosan (CS) is a natural biopolymer (linear polysaccharide comprising 1-4 linked 2-amino-deoxy-β-D-glucan) generally obtained by deacetylation of chitin, the main structural component of crustacean exoskeletons. CS exhibits a poly-cationic character and is non-toxic and biodegradable [7]. CS is considered a biological functional compound with multiple interesting properties. It can form films for food and pharmaceutical applications, including edible coatings, packaging material, or as drug-eluting carrier [5,7]. Its adsorbent capacity can have environmental applications during photocatalytic processes of waste-water treatment [8], and it also has inherent antibacterial and antifungal properties [9]. It is biocompatible with several organic and inorganic compounds by the presence of free amino and hydroxyl functional groups in its structure, which can react with other functional groups by electrostatic forces, hydrogen bonds, or by compound-soak up into the polymeric matrix, thus improving its mechanical and biological properties [10]...

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Section: Methodsmentioning

confidence: 99%

“…Ahmadi et al [24] fabricated a carboxymethyl cellulose film containing miswak (Salvadora persica L.) extract and TiO 2 nanoparticles. The authors stated that the presence of TiO 2 (2% wt.)…”

Section: Hydrophilic Polyurethanementioning

confidence: 99%

Chitosan-TiO2: A Versatile Hybrid Composite

et al. 2020

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“…Titania nanomaterials have been incorporated into polymers to form antibacterial coatings, food packaging materials, medical implants, wound dressings and scaffolds [59][60][61][62][63][64][65]229,286,287]. However, those studies are mainly focused on the bactericidal properties of the polymer nanocomposites with TiO 2 nanomaterials under UV irradiation.…”

Section: Polymer/titania Nanocompositesmentioning

confidence: 99%

“…They also addressed the calculation methods for assessing the antimicrobial efficacy of TiO 2 photocatalysts [35]. To avoid mechanical damage to TiO 2 NPs, they are embedded in the polymeric matrices to form antibacterial nanocomposites [59][60][61][62][63][64][65]. The beneficial effects of polymers as the matrix materials of functional composites include ease of processing and good moldability, and they are inexpensive with a low density [66][67][68][69][70][71][72].…”

Section: Introductionmentioning

confidence: 99%

Visible-Light Active Titanium Dioxide Nanomaterials with Bactericidal Properties

2020

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This article provides an overview of current research into the development, synthesis, photocatalytic bacterial activity, biocompatibility and cytotoxic properties of various visible-light active titanium dioxide (TiO2) nanoparticles (NPs) and their nanocomposites. To achieve antibacterial inactivation under visible light, TiO2 NPs are doped with metal and non-metal elements, modified with carbonaceous nanomaterials, and coupled with other metal oxide semiconductors. Transition metals introduce a localized d-electron state just below the conduction band of TiO2 NPs, thereby narrowing the bandgap and causing a red shift of the optical absorption edge into the visible region. Silver nanoparticles of doped TiO2 NPs experience surface plasmon resonance under visible light excitation, leading to the injection of hot electrons into the conduction band of TiO2 NPs to generate reactive oxygen species (ROS) for bacterial killing. The modification of TiO2 NPs with carbon nanotubes and graphene sheets also achieve the efficient creation of ROS under visible light irradiation. Furthermore, titanium-based alloy implants in orthopedics with enhanced antibacterial activity and biocompatibility can be achieved by forming a surface layer of Ag-doped titania nanotubes. By incorporating TiO2 NPs and Cu-doped TiO2 NPs into chitosan or the textile matrix, the resulting polymer nanocomposites exhibit excellent antimicrobial properties that can have applications as fruit/food wrapping films, self-cleaning fabrics, medical scaffolds and wound dressings. Considering the possible use of visible-light active TiO2 nanomaterials for various applications, their toxicity impact on the environment and public health is also addressed.

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“…Teymourpour et al [6] reported that the soybean polysaccharide biocomposite reinforced with TiO 2 showed good antimicrobial activity against Escherichia coli and Staphylococcus aureus. Ahmadi et al [21] developed a carboxymethyl cellulose film cross-linked with TiO 2 with improved UV-protective effects. Urruela-Barrios et al [5] fabricated alginate-gelatin hydrogels combined with TiO 2 for tissue regeneration.…”

Section: Introductionmentioning

confidence: 99%

Use of Titanium Dioxide (TiO2) Nanoparticles as Reinforcement Agent of Polysaccharide-Based Materials

et al. 2020

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In recent years, a strong interest has emerged in polysaccharide-hybrid composites and their potential applications, which have interesting functional and technological properties. This review summarizes and discusses the reported advantages and limitations of the functionalization of conventional and nonconventional polysaccharides by adding TiO2 nanoparticles as a reinforcement agent. Their effects on the mechanical, thermal, and UV-barrier properties as well as their water-resistance are discussed. In general, the polysaccharide–TiO2 hybrid materials showed improved physicochemical properties in a TiO2 content-dependent response. It showed antimicrobial activity against bacteria (gram-negative and gram-positive), yeasts, and molds with enhanced UV-protective effects for food and non-food packaging purposes. The reported applications of functionalized polysaccharide–TiO2 composites include photocatalysts (dye removal from aqueous media and water purification), biomedical (wound-healing material, drug delivery systems, biosensor, and tissue engineering), food preservation (fruits and meat), cosmetics (sunscreen and bleaching tooth treatment), textile (cotton fabric self-cleaning), and dye-sensitized solar cells. Furthermore, the polysaccharide–TiO2 showed high biocompatibility without adverse effects on different cell lines, indicating that their use in food, pharmaceutical, and biomedical applications is safe. However, it is necessary to evaluate the structural changes promoted by the storage conditions (time and temperature) on the physicochemical properties of polysaccharide–TiO2 hybrid composites to guarantee their stability during a determined time.

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<p>Fabrication and characterization of a titanium dioxide (TiO2) nanoparticles reinforced bio-nanocomposite containing <em>Miswak</em> (<em>Salvadora persica</em> L.) extract – the antimicrobial, thermo-physical and barrier properties</p>

Cited by 38 publications

References 55 publications

Chitosan-TiO2: A Versatile Hybrid Composite

Chitosan-TiO2: A Versatile Hybrid Composite

Visible-Light Active Titanium Dioxide Nanomaterials with Bactericidal Properties

Use of Titanium Dioxide (TiO2) Nanoparticles as Reinforcement Agent of Polysaccharide-Based Materials

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