We focused on preparing cellulose nanofibrils by purification, separation, and mechanical treatment of Kombucha membranes (KM) resulted as secondary product from beverage production fermentation tea broth with symbiotic culture bacteria yeast (SCOBY). purified KM using two alkaline solutions, 1 4 M NaOH, which afterwards were subjected to various treatments. Transmission electron microscopy (TEM), scanning (SEM), dynamic light scattering (DLS), X-ray diffraction (XRD), fluorescence (XRF),...

Silver nanoparticles (AgNPs) are considered a promising alternative to the use of antibiotics in fighting multidrug-resistant pathogens. However, their medical application is hindered by public concern regarding toxicity metallic nanoparticles. In this study, rationally designed AgNP were produced, order balance antibacterial activity and toxicity. A facile, environmentally friendly synthesis was used for electrochemical fabrication AgNPs. Chitosan employed as capping agent, both...

Gel microemulsion combines the advantages of microemulsion, which can encapsulate, protect and deliver large quantities active ingredients, gel, is so appreciated in cosmetic industry. This study aimed to develop characterize new gel microemulsions suitable for topical applications, using grape seed oil as oily phase, often employed pharmaceuticals, especially cosmetics. The optimized was formulated Tween 80 Plurol® Diisostearique CG a surfactant mix ethanol co-solvent. Three different...

Cystoseira barbata is an edible brown seaweed, traditionally used in the Black Sea area as functional food. Both alginate and seaweed biomass are well known for their potential use adsorbents heavy metals. Alginate was extracted from C. recovered Romanian coast on with a yield of 19 ± 1.5% (w/w). The structural data polysaccharide obtained by HPSEC-MALS, 1H-NMR. M/G ratio determined to be 0.64 molecular weight 126.6 kDa intrinsic viscosity 406.2 mL/g. beads were adsorption capacity respect...

Ultra-hydrophobic bilayer coatings on a glass surface were fabricated by sol–gel process using hexadecyltrimethoxysilane (C16TMS) and tetramethoxysilane (TMOS) (1:4 molar ratio) as precursors. After coating, silica nanoparticles (SiO2 NPs) functionalized with different mono-alkoxy derivatives (methoxytrimethylsilane, TMeMS; ethoxydimethylvinylsilane, DMeVES; ethoxydimethylphenylsilane, DMePhES; methoxydimethyloctylsilane, DMeC8MS) added, assuring the microscale roughness surface. Influences...

Cellulose nanofibers gained increasing interest in the production of medical devices such as mucoadhesive nanohydrogels due to their ability retain moisture (high hydrophilicity), flexibility, superior porosity and durability, biodegradability, non-toxicity, biocompatibility. In this work, we aimed compare suitability selected bacterial vegetal nanocellulose form hydrogels for biomedical applications. The cellulose were synthesized from brewer's spent grains (BSG) kombucha membranes,...

The rapid spread and mutation of SARS-CoV-2, the virus responsible for COVID-19, has set foundation extensive research into next-generation therapeutic strategies. A critical component SARS-CoV-2 is trimeric Spike (S) glycoprotein, which facilitates viral entry host cells by interacting with receptor-binding domain (RBD). To inhibit block entry, we designed developed molecularly imprinted synthetic nanogel antibodies (MIP-SNAs) that cap S1 RBD. This aims to provide a versatile, biosecure,...

Biogenic selenium nanoparticles (SeNPs) have been shown to exhibit increased bioavailability. Fermentation of pollen by a symbiotic culture bacteria and yeasts (SCOBY/Kombucha) leads the release content enhances prebiotic probiotic effects Kombucha. The aim this study was fortify Kombucha beverage with SeNPs formed in situ fermentation pollen. Response Surface Methodology (RSM) used optimize biosynthesis pollen-fermented beverage. were characterized Transmission electron microscopy...

Ag nanoparticles (AgNPs) were biosynthesized using sage (Salvia officinalis L.) extract. The obtained supported on SBA-15 mesoporous silica (S), before and after immobilization of 10% TiO2 (Degussa-P25, STp; commercial rutile, STr; synthesized from Ti butoxide, STb). formation AgNPs was confirmed by X-ray diffraction. plasmon resonance effect, evidenced UV-Vis spectra, preserved only for the sample STb. dispersion properties supports TEM microscopy, energy-dispersive X-rays, dynamic light...

Seed coating ensures the targeted delivery of various compounds from early stages development to increase crop quality and yield. Silicon alginate are known have plant biostimulant effects. Rice husk (RH) is a significant source biosilica. In this study, we coated mung bean seeds with an alginate-glycerol-sorbitol (AGS) film embedded biogenic nanosilica (SiNPs) RH, activity. After dilute acid hydrolysis ground RH in temperature-controlled hermetic reactor, resulting substrate was neutralized...

The present study investigated the possibility of obtaining 3D printed composite constructs using biomaterial-based nanocomposite inks. biopolymeric matrix consisted methacrylated gelatin (GelMA). Several types nanoclay were added as inorganic component. Our aim was to investigate influence clay type on rheological behavior ink formulations and determine morphological structural properties resulting crosslinked hydrogel-based nanomaterials. Moreover, through inclusion nanoclays, our goal...

Several strategies promote phyllosphere colonization by soil-born Trichoderma plant-beneficial strains. One of these is foliar spraying with suspensions containing large amounts chlamydospores—spores thick cell wall structures that make them highly resistant to harsh environmental conditions. biomass was produced cultivation on a cornmeal medium and compared the potato dextrose broth microscopic thermogravimetric analyses. The analyses revealed increased chlamydospore content thermostability...

Epoxy resin was conjugated with halloysite nanotubes (HNT) and different types of ZnO nanoparticles (commercial modified ZnO-ODTES) to obtain HNT-ZnO/epoxy composites. These (ZnO NPs) were utilized the intention enhance interfacial bonding between epoxy reinforcing agent (HNT). The properties resulted composites characterized by various methods such as FTIR-ATR, TGA, DSC, TEM-EDX, Nanoindentation analyses. thermal enhanced a greater extent addition HNT-ZnO nanofillers. DSC testing proved...

From an environmental and cost-effective perspective, a number of research challenges can be found for electronics, household, but especially in the automotive polymer parts industry. Reducing synthesis steps, coating painting, or other solvent-assisted processes, have been identified as major constrains existing technologies. Therefore, simple processing routes (mixing, extrusion, injection moulding) were used obtaining PMMA/HNT nanocomposites. By these techniques, automotive-grade...

Siliceous natural nanomaterials (SNNMs), i.e., diatomaceous earth and zeolites, have a nanoporous structure with large active surfaces that adsorb cations or polarized molecules. Such feature determines the effects related to SNNM utilization as low-risk plant protectants soil improvers. This work used SNNMs from Romanian quarries carriers for foliar fertilizers applied stone-fruit trees, apricot peach. We determined of on physiology, yield fruit quality treated trees. application impacts...

Biocompatibility, biodegradability, shear tinning behavior, quick gelation and an easy crosslinking process makes alginate one of the most studied polysaccharides in field regenerative medicine. The main purpose this study was to obtain tissue-like materials suitable for use bone regeneration. In respect, several types clay were investigated as components 3D-printing, nanocomposite inks. Using extrusion-based nozzle, nanocomposites inks printed 3D multilayered scaffolds. To observe behavior...

The present work aims to show how the main properties of poly(methacrylic acid) (PMAA) hydrogels can be engineered by means several silicon-based fillers (Laponite XLS/XLG, montmorillonite (Mt), pyrogenic silica (PS)) employed at 10 wt% concentration based on MAA. Various techniques (FT-IR, XRD, TGA, SEM, TEM, DLS, rheological measurements, UV-VIS) were used comparatively study effect these fillers, in correlation with their characteristics, upon structure and swelling, viscoelastic, water...

Biocompatible drug-delivery systems for soft tissue applications are of high interest the medical and pharmaceutical fields. The subject this research is development hydrogels loaded with bioactive compounds (inulin, thyme essential oil, hydro-glycero-alcoholic extract Vitis vinifera, Opuntia ficus-indica powder, lactic acid, citric acid) in order to support vaginal microbiota homeostasis. nanofibrillar phyto-hydrogel developed using biocompatible polymers chitosan (CS), never-dried...

Phytosynthesized selenium nanoparticles (SeNPs) are less toxic than the inorganic salts of and show high antioxidant antibacterial activity. Chitosan prevents microbial biofilm formation can also determine dispersal. Never-dried bacterial nanocellulose (NDBNC) is an efficient carrier bioactive compounds a flexible nanofibrillar hydrophilic biopolymer. This study aimed to develop selenium-enriched hydrogel nanoformulation (Se-HNF) based on NDBNC from kombucha fermentation fungal chitosan with...

This article compares two exfoliation options of multilayered silicate, one considering the action shear stress and temperature during melt compounding another taking into account thermo-mechanical pretreatment silicate in a plasticizer common to starch polyvinyl alcohol (PVOH), polymers from compound. Increasing time proved be an ineffective method for following high degradability PVOH under conditions loss hydration conditions. The obtained results prove that, by pretreating before...