Fabrication of novel nanohybrids by impregnation of CuO nanoparticles into bacterial cellulose and chitosan nanofibers: Characterization, antimicrobial and release properties

Almasi, Hadi; Jafarzadeh, Paria; Mehryar, Laleh

doi:10.1016/j.carbpol.2018.01.067

Cited by 158 publications

(58 citation statements)

References 46 publications

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“…Cu 4 O 3 material could provide opportunities to further explore its physicochemical properties and potential biological applications [22]. Copper oxide NPs posses significant antimicrobial properties by inhibiting the growth of bacteria, viruses, fungi and algae [23,24]. In the present work, the green synthesis of copper oxide nanoparticles using aqueous extract of Cicer arietinum (Razma seed) is an alternative to chemical methods studied.…”

Section: Introductionmentioning

confidence: 97%

Biosynthesis of Cu4O3 nanoparticles using Razma seeds: application to antibacterial and cytotoxicity activities

Thanuja

Udayabhanu²,

Nagaraju³

et al. 2019

SN Appl. Sci.

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In the present work, Cu 4 O 3 nanoparticles were prepared by biosynthesis method using Razma seeds and copper sulfate as a precursors. The synthesized Cu 4 O 3 nanoparticles were characterized using various analytical tools such as XRD, FTIR, UV-Vis, SEM and TEM. The average crystallite size of the prepared Cu 4 O 3 nanoparticles was calculated by Debye-Scherrer's equation and found to be 13 nm. The TEM images clearly reveal the average size of the particles is 27 nm. Antibacterial activity of Cu 4 O 3 nanoparticles was tested against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria by agar well diffusion method. The cytotoxic activity of synthesized Cu 4 O 3 nanoparticles was examined against human prostate cancer cells (PC-3). The prepared NPs show the significant antioxidant activity through scavenging of 1,1-diphenyl-2-picrylhydrazyl free radicals.

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Section: Introductionmentioning

confidence: 97%

Biosynthesis of Cu4O3 nanoparticles using Razma seeds: application to antibacterial and cytotoxicity activities

Thanuja

Udayabhanu²,

Nagaraju³

et al. 2019

SN Appl. Sci.

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“…Traditionally, BC requires composite preparation or modification under fermentation conditions to meet the demands of structural characteristics of BC in different fields of application. To improve its properties, chemicals (such as CuO and graphene oxide) have been used to modify BC (Almasi, Jafarzadeh, & Mehryar, 2018; Yang et al, 2016), thus limiting the application of BC in areas requiring biocompatibility such as skin grafts. Typically, to avoid the addition of chemicals, researchers usually change the fermentation conditions (dissolved oxygen, pH, and temperature) for regulating the BC structure (Hong & Qiu, 2008; Liu et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Tailoring bacterial cellulose structure through CRISPR interference‐mediated downregulation of galU in Komagataeibacter xylinus CGMCC 2955

Huang

Liu

Sun

et al. 2020

Biotech & Bioengineering

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Diverse applications of bacterial cellulose (BC) have different requirements in terms of its structural characteristics. culturing Komagataeibacter xylinus CGMCC 2955, BC structure changes with alterations in oxygen tension. Here, the K. xylinus CGMCC 2955 transcriptome was analyzed under different oxygen tensions. Transcriptome and genome analysis indicated that BC structure is related to the rate of BC synthesis and cell growth, and galU is an essential gene that controls the carbon metabolic flux between the BC synthesis pathway and the pentose phosphate (PP) pathway. The CRISPR interference (CRISPRi) system was utilized in K. xylinus CGMCC 2955 to control the expression levels of galU. By overexpressing galU and interfering with different sites of galU sequences using CRISPRi, we obtained strains with varying expression levels of galU (3.20–3014.84%). By testing the characteristics of BC, we found that the porosity of BC (range: 62.99–90.66%) was negative with galU expression levels. However, the crystallinity of BC (range: 56.25–85.99%) was positive with galU expression levels; galU expression levels in engineered strains were lower than those in the control strains. Herein, we propose a new method for regulating the structure of BC to provide a theoretical basis for its application in different fields.

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“…CuO nanoparticles impregnated bacterial cellulose and chitosan nanofibers were fabricated to enhance the antibacterial activity for food packing applications. A very high antibacterial activity was registered by CuO nanocomposite against both Gram positive and Gram negative bacteria due to synergistic effect was observed between CuO and nanofiber …”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanomaterials in Biomedical, Food, and Nutraceutical Applications: A Review

Amalraj¹,

Gopi²,

Thomas

et al. 2018

Macromolecular Symposia

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Nanotechnology with bionanomaterials have tremendous potential to enhance and utilize for nutrient and bioactive absorption, drug delivery systems, pharmaceutical, and nutraceutical field through various applications. Cellulose nanomaterials are green materials that are obtained from renewable sources and possess exceptional mechanical strength and biocompatibility. The associated unique physical and chemical properties have made various nanocomposite materials an intriguing prospect for different application in the biomedical, food, and nutraceutical industries. In this review, we have discussed and provided a summary of the recent researches in the utilization of cellulosic nanomaterials in applications related to food packaging, bone tissue engineering, wound dressing, drug delivery, and nutraceutical research area and industries.

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Fabrication of novel nanohybrids by impregnation of CuO nanoparticles into bacterial cellulose and chitosan nanofibers: Characterization, antimicrobial and release properties

Cited by 158 publications

References 46 publications

Biosynthesis of Cu4O3 nanoparticles using Razma seeds: application to antibacterial and cytotoxicity activities

Biosynthesis of Cu4O3 nanoparticles using Razma seeds: application to antibacterial and cytotoxicity activities

Tailoring bacterial cellulose structure through CRISPR interference‐mediated downregulation of galU in Komagataeibacter xylinus CGMCC 2955

Cellulose Nanomaterials in Biomedical, Food, and Nutraceutical Applications: A Review

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