Silver-Based Polymeric Nanocomposites as Antimicrobial Coatings for Biomedical Applications

Cellulase Immobilization onto Magnetic Halloysite Nanotubes: Enhanced Enzyme Activity and Stability with High Cellulose Saccharification

“…The integration of nanoscience with biotechnology has received due consideration in recent years where functional nanomaterials are being extensively studied for water disinfection, photocatalysis, drug delivery, biosensing, and biomedical applications. − The use of functionalized inorganic nanomaterials as a support matrix for immobilizing enzymes has also been documented recently. , A high aspect ratio (surface area/volume) of nanostructures provides larger surface area for high enzyme loading concurrently reducing diffusional limitations which results in high catalytic efficiency, better conversion yield, and an improved interaction between substrate and enzyme . Naturally occurring clay materials such as montmorillonite, bentonite, double-layered hydroxides, and zeolites have been investigated as a potential substitute of conventional nanomaterials for biological applications. , Being abundant, porous, chemically inert, and mechanically and thermally stable, clay materials can be established as an immobilizing template . That is why halloysite nanotubes (HNTs, Al 2 Si 2 O 5 (OH) 4 ·2H 2 O) are increasingly gaining importance in biocatalytic applications .…”

“…17,18 Being abundant, porous, chemically inert, and mechanically and thermally stable, clay materials can be established as an immobilizing template. 19 That is why halloysite nanotubes (HNTs, Al 2 Si 2 O 5 (OH) 4 •2H 2 O) are increasingly gaining importance in biocatalytic applications. 20 Similar to other silica-based materials, the presence of siloxane (−Si−O−Si−) and silanol groups (−Si−OH) at the outer surface of HNTs make them versatile to be modified, undergoing specific surface functionalization for intended applications.…”

Antimicrobial Peptides-Coated Stainless Steel for Fighting Biofilms Formation for Food and Medical Fields: Review of Literature

“…Ions, metallic nanoparticles, and silver halide nanoparticles were integrated into Layer-by-Layer (LbL) coatings on stainless steel and afterward released to kill bacteria. AgNPs have been extensively found to possess effective antimicrobial properties related to its oligodynamic action and multiple modes of its biocidal action [28]. Silver-based nanoparticle mixed with the cationic polymer poly(3,4-dihydroxy-L-phenylalanine)-co-poly(2-(methacryloxy)ethyl trimethylammonium chloride) (DOPA) permitted the adhesion enhancement of the LbL coating to a stainless-steel surface.…”

“…Several studies concerning AgNPs toxicity reported that a safe range can be established for the use of AgNPs in designing antimicrobial coatings [28]. However, despite silver's effective antibacterial activity, the toxic effect of AgNPs against the mammalian cells limited their use [34].…”

Аntibacterial inorganic agents: efficiency of using multicomponent systems

“…Многочисленные исследования показали, что включение наночастиц Ag, ZnO, CuO, Fe 2 O 3 в ряд полимерных соединений, в том числе хитозан, целлюлозу, усиливает антимикробные свойства материалов, а также способствует более длительному высвобождению антибактериальных агентов [25,55,59,76]. Среди них, например, наночастицы серебра, закрепленные на биосовместимой нанофибриллированной целлюлозе (NFC) [42], мембраны из бактериальной целлюлозы, нагруженные наночастицами меди или оксида цинка [33,39], гибридное покрытие гидроксиапатит/хитозан/серебро на поверхности титанового имплантата [77], наночастицы Ag-ZnO c триблок-сополимерами PEG-PHBV-PEG [81], полиметилметакрилат/высокомолекулярный поли винилпирролидон/наночастицы серебра [1,7].…”