In this work, fungal melanin was used for the first time to prepare poly(lactic acid)-based composites. The films of various concentrations (0.025%, 0.05% and 0.2% w/w) were prepared using an extrusion method. mechanical, antioxidant, antimicrobial, water vapor UV-Vis barrier properties, as well available polyphenolics on surface, studied. FT-IR Raman spectroscopy studies carried out analyze chemical composition resulting films. hydrophobicity, color response, thermal, optical opacity values...

Nanoparticles exhibit unique biological activities and may serve as novel plant growth stimulators. This research consisted of a two-year pot experiment designed to find out if silver nanoparticles (AgNPs) might be used in the cultivation Oriental lilies. In first year, we evaluated effects various concentrations AgNPs (0, 25, 50, 100, 150 ppm) their application methods (pre-planting bulb soaks, foliar sprays, substrate drenches) on flowering Lilium cv. Mona Lisa. second soaking bulbs Little...

The purpose of the study was to obtain an external coating based on nanoparticles ZnO, carvacrol, and geraniol that could be active against viruses such as SARS-Co-V2. Additionally, synergistic effect chosen substances in coatings analyzed. goal measure possible antibacterial activity obtained. Testing antiviral with human pathogen viruses, SARS-Co-V2, requires immense safety measures. Bacteriophages phi 6 phage represent good surrogates for airborne viruses. results indicated ZC1 ZG1...

Portions of fresh Baltic cod fillets were packed into cellulose boxes (control samples), which covered with Methyl Hydroxypropyl Celluloses (MHPC) coating 2% polylysine. The had square PE films and enclosed in MHPC containing ZnO nanoparticles. stored at 5 °C examined after 72 h 144 storage times. Results obtained this study showed that the textural parameters increased, both Springiness Cohesiveness found greater for all analysed packaging materials. Gumminess increased storage, but lowest...

The aim of this study was to examine the influence accelerated UV-aging on activity against chosen microorganisms and mechanical properties poly-lactic acid (PLA) films enhanced with ZnO nanoparticles. pure PLA tri-layered PLAZnO1%/PLA/PLAZnO1% 150 µm thickness were extruded. samples treated UV-A Q-SUN irradiation. After irradiation antimicrobial analyzed. results demonstrated that did not inhibit growth Staphylococcus aureus, Bacillus cereus, Escherichia coli, atrophaeus, Candida albicans...

One of the visible trends in cultivation plants, particularly medicinal ones, is increasing interest researchers polysaccharides and their derivatives that show biostimulatory properties are also safe to use. In current study, we evaluated effects gellan gum its depolymerized form oligo-gellan, on growth antimicrobial activity two ornamental species Eucomis bicolor comosa used natural medicine. The biopolymers were applied bulb coating prepared by using polyelectrolyte complexes. both...

The above-ground parts of plants, including leaves, constitute an important part a human diet. Their mineral and biological composition can be modified by proper preparation the soil substrate, i.e., supplying it with nutrients. objective this study was to assess influence zinc oxide nanoparticles (ZnO NPs) at 0, 50, 100 200 mg L−1 concentrations on red perilla (Perilla frutescens var. crispa f. purpurea) leaf yield quality. Plants were grown in 2 L pot under plastic greenhouse condition....

Low density polyethylene (LDPE) films covered with active coatings containing mixtures of rosemary, raspberry, and pomegranate CO2 extracts were found to be against selected bacterial strains that may extend the shelf life food products. The also offer antiviral activity, due their influence on activity Φ6 bacteriophage, as a surrogate for SARS-CoV-2 particles. mixture these could incorporated into polymer matrix obtain foil antibacterial properties. initial goal this work was LDPE...

Food packaging has to preserve food products, not only providing protection against mechanical factors, but also antioxidant and antimicrobial protection. This article describes the effects of PBS film modification with two sea buckthorn extracts (chloroform extract supercritical CO2 extract) at different concentrations (1 or 5 g per 100 polymer). The films were tested determine effect active additive on optical properties, moisture sorption, properties (against Escherichia coli,...

Biofilm-forming microorganisms pose a severe threat in the food and medical industries, among others. In this paper, research materials were poly(butylene succinate–dilinoleic succinate) (PBS–DLS) copolymers with variable hard soft segment weight ratios (90:10, 70:30, 50:50). Polymeric films prepared by solvent casting method. Selected physicochemical properties tendency to form biofilm on polymer surface investigated. As amount of DLS segments matrix increased, changes FTIR–ATR spectra...

The research carried out so far for phage-antibiotic synergy (PAS) differs as regards the technique of modifying double-layer agar (DLA) method to show PAS effect on Petri plates, which may contribute non-uniform results. Therefore, there is a need unify effectively detect effect, at its most basic in vitro test. In this study, bacteriophage T45 and 43 antibiotics belonging different antibiotic classes were used. Seven DLA modifications tested, terms addition placement presence or absence...

The aim of this study was to cover biopolymeric packaging films based on PLA/PHBV blend with a functional composite coating (to retain their ecological character) and investigate antimicrobial properties before after UV irradiation. As an active coating, the carrier hydroxypropyl methyl cellulose (HPMC), as well its modified form Achillea millefolium L., Hippophae rhamnoides Hypericum L. extract (E) combined system extracts nano-ZnO (EZ), used obtain formulations. Additionally, film surface...

The main goal of the work was to create an internal coating based on super critical CO2 extracts raspberry seeds, pomegranate seeds and rosemary that could be active against chosen bacterial strains. Additionally, synergistic effect these substances in were then analysed. next demonstrate antiviral activity coatings phi6 bacteriophage particles (airborne viruses surrogate). results study indicated three containing a mixture showed bacteriolytic S. aureus cells bacteriostatic E. coli B....

The influence of accelerated UV-A and Q-SUN irradiation on the antimicrobial properties coatings containing ZnO nanoparticles was investigated using a polyethylene (PE) film covering. results study showed that Methyl Hydroxypropyl Celluloses (MHPC) did not growth S. aureus, B. cereus, E. coli, P. aeruginosa or C. albicans cells. MHPC inhibited bacterial strains reduced number strains. Accelerated had no effect nano against cereus coli. decreased activity albicans. An FT-IR analysis clearly...

Microbial surface contamination of the cooked ham sliced by shop assistants has an influence on its potential secondary shelf-life. Active packaging may be solution. The first goal work was to obtain coatings based Formitopsis betulina and Uncaria tomentosa extracts (separately), with addition nanoparticles ZnO (as a synergetic agent increase plant extracts’ antimicrobial effectiveness), that could active against selected bacterial strains. Another aim determine obtained layers microbial...

The growing market demand for plant raw materials with improved biological value promotes the extensive search new elicitors and biostimulants. Gellan gum derivatives may enhance growth development, but have never been used under stress conditions. Perilla (Perilla frutescens, Lamiaceae) is a source of valuable bioproducts pharmaceutical, cosmetic, food industries. However, there not much information on use biostimulators in perilla cultivation. In this work we investigated effects...

The purpose of this research was to analyze the antiviral activity coatings based on ZnO nanoparticles and TiO2. goal also investigate influence accelerated UV-B Q-SUN irradiation their effectiveness. results performed analysis demonstrated that only one four containing high activity. had a positive properties other three coatings. After 24 h irradiation, these moderate effectiveness, confirming improved active layers (by activating TiO2). Unfortunately, after 48 decreased, time should not...

The goal of this study was to analyze the antifungal and antiviral activity coatings based on Formitopsis betulina, Verbascum L. Uncaria tomentosa extracts with ZnO nanoparticles as active compounds. other purpose investigate impact polypropylene bags coated obtained antiviral/antifungal microbial quality/purity strawberries. results showed that analyzed inhibited Candida albicans growth completely. They did not inhibit Fusarium oxysporum, but they decreased its number. Additionally, all...

The aim of the presented work was to functionalize a blend based on polyhydroxyalkanoate (PHA): poly(hydroxybutyrate (PHB) with poly(lactic acid) (PLA) and mixture three selected herb extracts, namely,

The aim of this study was to develop active packaging materials covered in coatings (offering antibacterial and antiviral properties) that contain selected plant extracts. In addition, the synergistic effect substances these extracts also analysed. results demonstrated Scutellaria baicalensis Glycyrrhiza L. (two six analysed extracts) were most agents against Gram-positive Gram-negative bacterial strains. Additionally, S. noted, meaning two extract mixtures on Bacillus subtilis,...

Summary Introduction: Recently, interest in essential oils used natural medicine, has been increasing. Essential are still being tested for their potential uses as an alternative remedies the treatment of many infectious diseases. Objective: The aim study was to evaluate antibacterial properties commercial (rosemary, caraway and fennel) reduce number Staphylococcus aureus Escherichia coli . Methods: activity investigated by agar dilution method. Results: result experiments showed that...

The aim of this study was to evaluate self-produced nutraceutical treats, taking into account the nutritional preferences dogs, and analyze proximate composition, macrominerals trace elements content. Four variants snacks were prepared—two extruded two baked. consisted wholegrain buckwheat flour, spelt banded cricket meal, dried hemp inflorescences, dry spirulina biomass, linseed (in case baked snacks) guar gum snacks). composition determined according Association Official Analytical...

The use of combined biocontrol strategies to combat bacterial-related issues is an increasingly popular approach. Therefore, a novel investigation was performed, where interactions lytic bacteriophages (MS2, T4 and phi6) methanolic plant extracts (Echinacea purpurea (EP) Ruta graveolens (RG)) in the bacterial environment have been examined understand their application potential limitations. Due complexity these interactions, many up-to-date techniques were used (microdilution method, phage...

To evaluate the antibacterial and antifungal properties of acetone water extracts selected Eucomis taxa.The bulbs bicolor, comosa (E. comosa) E. cv. were dried examples from each experimental treatment ground separately into powder. Each sample was divided two groups with equal amounts powder, respectively extracted a 70% solution aqueous acetone. The crude then filtered through 0.2 μm filter. next concentrated at 40 °C. After evaporation acetone, samples additionally activities against...