In Situ Synthesis of Au Nanoparticles on Viscose Cellulose Sponges for Antibacterial Activities

Shan, Mingjing; Liu, Chang; Shi, Lei; Zhang, Lei; Lin, Yuan; Zhang, Shuo; Zhu, Zhenjun; Wang, Xiaoyin; Zhuang, Xupin

doi:10.3390/polym11081281

Cited by 11 publications

(5 citation statements)

References 49 publications

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“…The maximum value of ZOI is measured around AuNSs-S@BC against E. coli (~ 17 mm). This phenomenon is consistent with the result which explained by Lee et al and Shan et al that the two belongs to different types of cell wall [ 18 , 35 ]. Besides the above agar disk diffusion method, bacterial incubation data were also recorded by the optical density of the liquid culture medium (see Fig.…”

Section: Resultssupporting

confidence: 93%

Organic-free growth of gold nanosheets inside 3D bacterial cellulose as highly efficient and robust antibacterial biopolymers

et al. 2022

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Without any chemical agent, gold nanosheets (AuNSs) were controllable synthesized through a facile photo-induced reduction within bacterial cellulose (BC) biopolymers. Compared with traditional polymers, AuNSs modified BC biopolymers (AuNSs@BC) biopolymers exhibited similar levels of softness, ductility, and better tensile strength. The in situ constructing of AuNSs@BC biopolymers was demonstrated to provide great reusability and antibacterial activities and towards both of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) . The optimized AuNSs@BC biopolymers remain at least 95% antibacterial activities after three cycles. The facile and shape-controlled synthesis of AuNSs@BC biopolymers is believed to be useful for the design and application of biomass-based medical dressing. Supplementary Information The online version contains supplementary material available at 10.1007/s10853-022-07273-x.

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Section: Resultssupporting

confidence: 93%

Organic-free growth of gold nanosheets inside 3D bacterial cellulose as highly efficient and robust antibacterial biopolymers

et al. 2022

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“…In this process, cellulose reacts with carbon disulfide (CS 2 ) to form cellulose xanthate (cellulose viscose), which can be converted to regenerate cellulose in acid solution. Recently, we have designed and fabricated a novel cellulose sponge with favorable antibacterial properties using the abovementioned approaches, in which Glauber salt is added into viscose as a pore-forming agent to ensure the porous structure of the sponge. Simultaneously, given the excellent chemical properties and number of reactive groups, several researchers have focused on this process to fabricate composite chitosan fibers or films. − In addition, given the same molecular structure, chitosan can be turned into chitosan xanthate (chitosan viscose) through the viscose process, which can achieve a more homogeneous distribution of chitosan in the cellulose by mixing two types of viscose.…”

Section: Introductionmentioning

confidence: 99%

Cellulose/Chitosan Composite Sponge for Efficient Protein Adsorption

Liu

You

et al. 2021

Ind. Eng. Chem. Res.

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Sponges with large protein adsorption capacity are highly desired in various fields such as biosensors, biofuel cells, biocatalysis, and protein chromatography. However, the use of environmentally friendly materials and mass production still face enormous challenges. Herein, a novel and facile method to fabricate an environmentally friendly monolithic cellulose/chitosan composite sponge (CECSS) with remarkable performance is designed using the mature viscose process. The obtained highly efficient adsorption sponge exhibits a hierarchical porous structure with open-pore structures with a diameter range of 200−1000 μm and small micro/nanocellular structures (0.5−2 μm), which endow it with remarkable porosity (62.95%) and water adsorption capacity (1409%). Based on the abovementioned unique porous structure and reactive groups of chitosan, the CECSS exhibits a high bovine serum albumin adsorption capacity of 200.56 mg/g at pH 5.5 for 10 h. In addition, the adsorption of the CECSS can be well described by the pseudo-second-order kinetic model and the Langmuir isotherm model. This work provides a new sponge-forming process for the fields of protein adsorption, which may achieve the production of natural protein adsorbents at the industrial level.

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“…In summary, the method for creating porous MCS encompasses two principal steps: pore formation through lyophilization and cross‐linking using food‐grade citric acid, setting it apart from traditional cellulose sponge manufacturing techniques. Conventional methods rely on the cellulose xanthate process and a hydrothermal procedure, often involving the use of chemicals such as carbon disulfide [ 39 ] or sodium borohydride [ 40 ] to create porous networks. These substances, known for their potential to release toxic gases, are not preferred for applications in the food industry due to their high toxicity.…”

Section: Resultsmentioning

confidence: 99%

Eco‐Friendly and Self‐Sanitizing Microporous Cellulose Sponge (MCS)‐Based Cooling Media for Mitigating Microbial Cross‐Contamination in the Food Cold Chain

Liu,

Xu,

et al. 2024

Advanced Science

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Maintaining precise temperature control is vital for cold chain food transport, as temperature fluctuations can cause significant food safety and quality issues. During transport, ice that melts can promote the growth of microbes and their spread, resulting in microbial cross‐contamination. This study developed sustainable, non‐melting, self‐sanitizing “ice cubes” using food grade compositions including microporous cellulose sponges (MCS) and photosensitizers, aimed at enhancing temperature regulation and minimizing microbial contamination in the cold chain. Upon absorbing water, the MCS matched traditional ice in cooling efficiency and heat absorption and exhibit remarkable mechanical and thermal durability, withstanding multiple freeze‐thaw cycles and compressive stresses. The cationic MCS combined with erythrosine B demonstrated strong self‐sanitizing capabilities, effectively reducing microbial cross‐contamination in food models. Additionally, the release rates of photosensitizers from the MCS can be modulated by altering environmental ionic strength. This research offers viable solutions to address microbial cross‐contamination challenges in current cold chain systems.

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In Situ Synthesis of Au Nanoparticles on Viscose Cellulose Sponges for Antibacterial Activities

Cited by 11 publications

References 49 publications

Organic-free growth of gold nanosheets inside 3D bacterial cellulose as highly efficient and robust antibacterial biopolymers

Organic-free growth of gold nanosheets inside 3D bacterial cellulose as highly efficient and robust antibacterial biopolymers

Cellulose/Chitosan Composite Sponge for Efficient Protein Adsorption

Eco‐Friendly and Self‐Sanitizing Microporous Cellulose Sponge (MCS)‐Based Cooling Media for Mitigating Microbial Cross‐Contamination in the Food Cold Chain

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