Preparation of antimicrobial/ultraviolet protective bacterial nanocellulose film with carbon dots synthesized from lactic acid bacteria

Kousheh, Seyedeh Alaleh; Moradi, Mehran; Tajik, Hossein; Molaei, Rahim

doi:10.1016/j.ijbiomac.2020.03.230

Cited by 133 publications

(53 citation statements)

References 49 publications

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“…Bacterial nanocellulose used by Kousheh et al. (2020) served as a carrier biopolymer for the incorporation of carbon dots. Carbon dots were obtained by a one‐step hydrothermal method using the cell‐free supernatant of a probiotic bacterium Lactobacillus acidophilus .…”

Section: Nanofillersmentioning

confidence: 99%

Antimicrobial nanoparticles and biodegradable polymer composites for active food packaging applications

Omerović

Djisalov

Živojević

et al. 2021

Comp Rev Food Sci Food Safe

192

109

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The food industry faces numerous challenges to assure provision of tasty and convenient food that possesses extended shelf life and shows long‐term high‐quality preservation. Research and development of antimicrobial materials for food applications have provided active antibacterial packaging technologies that are able to meet these challenges. Furthermore, consumers expect and demand sustainable packaging materials that would reduce environmental problems associated with plastic waste. In this review, we discuss antimicrobial composite materials for active food packaging applications that combine highly efficient antibacterial nanoparticles (i.e., metal, metal oxide, mesoporous silica and graphene‐based nanomaterials) with biodegradable and environmentally friendly green polymers (i.e., gelatin, alginate, cellulose, and chitosan) obtained from plants, bacteria, and animals. In addition, innovative syntheses and processing techniques used to obtain active and safe packaging are showcased. Implementation of such green active packaging can significantly reduce the risk of foodborne pathogen outbreaks, improve food safety and quality, and minimize product losses, while reducing waste and maintaining sustainability.

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Section: Nanofillersmentioning

confidence: 99%

Antimicrobial nanoparticles and biodegradable polymer composites for active food packaging applications

Omerović

Djisalov

Živojević

et al. 2021

Comp Rev Food Sci Food Safe

192

109

View full text Add to dashboard Cite

show abstract

“…(Kar et al, 2014). Antimicrobial carbon dots (CDs) were synthesized by hydrothermal method from cell free supernatant of Lactobacillus acidophilus and they showed antimicrobial activity against Escherichia coli (Gram-negative) and Listeria monocytogenes (Gram-positive) (Kousheh et al, 2020). Nanocellulose is another nanoscale material which is predominantly synthesized by bacteria.…”

Section: Other Medical Usesmentioning

confidence: 99%

Microbial Nano-Factories: Synthesis and Biomedical Applications

et al. 2021

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In the recent times, nanomaterials have emerged in the field of biology, medicine, electronics, and agriculture due to their immense applications. Owing to their nanoscale sizes, they present large surface/volume ratio, characteristic structures, and similar dimensions to biomolecules resulting in unique properties for biomedical applications. The chemical and physical methods to synthesize nanoparticles have their own limitations which can be overcome using biological methods for the synthesis. Moreover, through the biogenic synthesis route, the usage of microorganisms has offered a reliable, sustainable, safe, and environmental friendly technique for nanosynthesis. Bacterial, algal, fungal, and yeast cells are known to transport metals from their environment and convert them to elemental nanoparticle forms which are either accumulated or secreted. Additionally, robust nanocarriers have also been developed using viruses. In order to prevent aggregation and promote stabilization of the nanoparticles, capping agents are often secreted during biosynthesis. Microbial nanoparticles find biomedical applications in rapid diagnostics, imaging, biopharmaceuticals, drug delivery systems, antimicrobials, biomaterials for tissue regeneration as well as biosensors. The major challenges in therapeutic applications of microbial nanoparticles include biocompatibility, bioavailability, stability, degradation in the gastro-intestinal tract, and immune response. Thus, the current review article is focused on the microbe-mediated synthesis of various nanoparticles, the different microbial strains explored for such synthesis along with their current and future biomedical applications.

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“…3) confirms the successful production of C-dots, as similarly outlined in previous studies. 18,23 Wang et al 28 reported that the green luminescence specification in C-dots could be attributed to functional oxidized carbon groups. The classic feature of C-dots is the optical absorption peak, which is observed in the UV region with a maximum absorption of around 250-275 nm and a tail extending into the visible range.…”

Section: Resultsmentioning

confidence: 99%

“…The antibacterial properties of C-dots have been investigated. 18 Complex mechanisms are responsible for the antibacterial performance of C-dots, including reactive oxygen species generation, membrane disintegration, cytoplasm leakage and condensation/ fragmentation of genomic DNA. The antimicrobial performance is highly associated with surface charge, functional groups, size and the shape of C-dots.…”

Section: Introductionmentioning

confidence: 99%

“…C-dots, as a nanomaterial, can also contribute to the mechanical and barrier enhancement of the BNC sheet. Recently, the UV barrier behavior of C-dots, 18 Ag 21 and TiO 2 22 nanoparticle-based food packaging materials have been broadly investigated. Considering the abovementioned specifications, in the present study, C-dots were synthesized from the white mulberry extract using a hydrothermal method and then characterized.…”

Section: Introductionmentioning

confidence: 99%

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Optimization and characterization of eco‐friendly antimicrobial nanocellulose sheet prepared using carbon dots of white mulberry (Morus alba L.)

et al. 2020

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BACKGROUND: Carbon dots (C-dots) with antimicrobial activity were synthesized from the white mulberry extract with the aim of fabricating anti-listeria nanopaper using bacterial nanocellulose (BNC). Highly dispersed synthesized C-dots with a size smaller than 10 nm (approximately 4.9 nm) were impregnated into BNC by an ex situ coating method and then mechanical, morphological, UV-protectant and antibacterial activity were assessed. Randomized response surface methodology using a central composite design was applied to investigate the optimized concentration of C-dots in the BNC membrane.RESULTS: An optimized nanopaper including C-dots at a concentration of 530 g L −1 and an impregnation time of 14 h at 30°C with significant antimicrobial activity on Listeria monocytogenes was designed. The addition of C-dots into BNC significantly increased ultimate tensile strength and decreased strain with respect to breaking BNC. A BNC sheet with high-efficient UV-blocking property was prepared using C-dots.CONCLUSION: Based on the results, the designed nanopaper shows a substantial capacity with respect to the fabrication of antimicrobial/UV-blocking sheets for food active packaging.

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Preparation of antimicrobial/ultraviolet protective bacterial nanocellulose film with carbon dots synthesized from lactic acid bacteria

Cited by 133 publications

References 49 publications

Antimicrobial nanoparticles and biodegradable polymer composites for active food packaging applications

Antimicrobial nanoparticles and biodegradable polymer composites for active food packaging applications

Microbial Nano-Factories: Synthesis and Biomedical Applications

Optimization and characterization of eco‐friendly antimicrobial nanocellulose sheet prepared using carbon dots of white mulberry (Morus alba L.)

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