Antimicrobial Agents in Protective Packaging

Paper packaging for food that provides both odor control and antimicrobial properties. The packaging uses a coating layer applied to kraft paper. The coating contains extracts from cypress, lemon, burdock, green tea, ginkgo, and basil, along with complex inorganic materials, fragrance, binder, dispersant, and solvent. The coating provides simultaneous odor masking and antibacterial performance for food packaging.

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Functional reinforcing paper with insect repellent, antibacterial, deodorizing, moisture proofing, and freshness maintaining properties for improved packaging quality. The paper has a coating with a functional material like insect repellent, antibacterial agent, deodorant, freshness retainer, or desiccant. It can also be used as a packaging material itself with contact surfaces containing the functional material. The coating enhances strength, water resistance, and oil resistance.

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Biodegradable packaging made from paper impregnated with propolis extract to provide biocidal and antioxidant properties. The paper is treated with water or ethanol extracts of propolis, a natural bee product with antibacterial, antifungal, and antioxidant activity. The impregnated paper can prevent microbial growth on food products during storage. The propolis extracts also have antimold and antifungal effects. The paper packaging degrades faster than regular paper due to the nutrients in propolis enriching the soil. Consumers prefer the propolis paper due to its natural origin and health benefits.

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Biodegradable nanocomposite food packaging films that provide enhanced antimicrobial and oxidation inhibition properties to prevent spoilage and pathogen growth. The films are made by incorporating biosynthesized zirconium nanoparticles capped with a bioactive compound called Arachisan derived from peanut leaves. The ArZrNPs provide antimicrobial activity against food-borne pathogens like Salmonella and E. coli. They also scavenge free radicals to prevent oxidation. The nanoparticles are dispersed in biodegradable polymer films for sustainable packaging with extended shelf-life and reduced pathogen risk.

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Hybrid biocomposite film for food packaging that combines whey protein isolate, chitosan, and silica to improve properties like strength and antibacterial activity. The film consists of a whey protein isolate matrix with added chitosan and silica fillers. The chitosan provides antimicrobial properties while the silica increases strength. The composite films have higher tensile strength and elongation compared to the whey protein isolate film. The chitosan concentration of 1.5% and silica concentration of 5% provide optimal antibacterial properties against E. coli.

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Packaging material with antimicrobial and low adhesion properties to reduce contamination and disease transmission through contact with the packaging surface. The packaging has a coating that combines anti-microbial behavior to deactivate contaminating microbes with low adhesion properties to prevent buildup of contamination. The coating is applied over a substrate and can be printed onto the packaging. The low adhesion properties help prevent contamination from sticking to the surface, while the anti-microbial properties deactivate any remaining contamination.

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Biodegradable, antibacterial, and antioxidant food packaging film made from natural materials like sodium alginate, egg white, and black seed oil. The film is prepared by mixing the polymers and oil in water, forming a hydrogel, and then freeze-thaw cycling to improve uniformity. The film provides extended shelf life and nutrition preservation for perishable produce by preventing spoilage from bacteria and oxidation. The biodegradable packaging can be disposed of without processing.

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Preparing a grass-derived multifunctional nanomaterial film for food packaging that enhances mechanical properties, water resistance, UV protection, oxygen scavenging, and antimicrobial properties. The film is made by incorporating nanomaterials extracted from dried darbha grass, like carbon dots, cellulose nanofibers, and silver nanoparticles, into PVA films. The grass nanomaterials improve the film's performance compared to standard PVA films.

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Smart packaging for preventing spoilage of food products like aquaculture items and fruits/vegetables by releasing antioxidant and antimicrobial preservatives inside the package when temperature and pH exceed predefined ranges. The packaging has sensors to monitor pH and temperature inside, and controlled injectors to release preservatives when spoilage conditions are detected. This allows targeted preservative release rather than adding them at production.

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Active food packaging material that inhibits mold and bacteria growth on packaged foods. The packaging has a release layer containing antimicrobial agents dispersed in a biodegradable polymer that vaporizes into the food environment. This is coated with nanocellulose. The nanocellulose layer prevents the active agents from leaching out too quickly. It also has a structural layer made of biodegradable materials like PHA, cellulose, or starch. This provides mechanical strength for packaging. The nanocellulose coating allows controlled release of the antimicrobials into the headspace around the food. It also improves eco-sustainability compared to conventional plastic packaging.

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Polystyrene-based resin composition with antibacterial and antiviral properties that maintains transparency and can be used for food packaging containers. The composition contains a polystyrene resin and specific antibacterial and antiviral agents like fatty acid metal salts, metal complexes with heteroatom ligands, or metal complexes with fatty acid metal salts. The metals in these agents can be lithium, sodium, potassium, rubidium, cesium, boron, magnesium, aluminum, calcium, manganese, iron, cobalt, nickel, tin, antimony, copper, silver, zinc, molybdenum, vanadium, strontium, zirconium, barium, bismuth, lead, gold, platinum, or rare earth elements.

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A method to manufacture eco-friendly packaging paper using an alcohol-based, antibacterial ink composition printed on a resin film. The ink composition contains dispersant, aloe extract (fresh juice), and solvent like ethanol. Printing with this ink on one side of a resin film creates the antibacterial packaging paper. The alcohol-based ink replaces traditional solvent-based inks to eliminate VOCs. The aloe extract provides antibacterial properties. The dispersant improves ink quality. The solvent allows printing. The resin film provides the packaging paper base.

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Biodegradable packaging material made from agricultural waste like wheat straw for extending the shelf life of food products. The packaging is produced by combining nanocellulose from wheat straw with acetylated arabinoxylan (AXAc) from wheat straw. Silver nanoparticles are also incorporated for antimicrobial properties. The composite films made from these materials have improved moisture barrier and antimicrobial properties compared to the original polysaccharides. This provides a biodegradable and sustainable alternative to traditional plastic packaging that reduces waste and environmental impact.

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Biodegradable food packaging films made from gelatin with added copper and zinc oxide nanoparticles that have enhanced physical stability and antimicrobial properties compared to plain gelatin films. The nanoparticles crosslink with the gelatin to improve moisture resistance, strength, and durability for food packaging applications. The copper and zinc ions released from the nanoparticles also have antibacterial effects to prevent microbial contamination on food surfaces.

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Food packaging with integrated antimicrobial properties to reduce spoilage and pathogen growth. The packaging contains an absorbent material mixed with antimicrobial agents like alkylpyridinium salts, acyl arginine esters, and aco-alkylenediamine tetraacetic acid salts. The antimicrobial agents inhibit bacteria, molds, and yeasts around the food. The absorbent material absorbs food juices to prevent bacterial growth. The antimicrobials are approved food additives for safety. The packaging can be a tray, pouch, or article with the antimicrobial composition between layers or fibers.

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Biodegradable food packaging material made from natural components like plant extracts, graphene oxide, and calcium carbonate. The packaging has layers of paper, adhesive, and a coating. The base layer is made from a copolymer resin, polyethyleneimine, calcium carbonate, tourmaline powder, and plant extract. The adhesive layer contains PLA, lactic acid oligomer, PBAT, tetraethylene glycol diacrylate, sisal fiber, mineral oil, and plant oil. The coating layer is made from polyurethane acrylate resin, PLA, graphene oxide, plant extract, and plant oil. The packaging provides improved biodegradability, reduced oxygen permeability, and antibacterial function compared to conventional plastic packaging.

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A monomaterial packaging film for foods that has both antibacterial and antifungal properties even when the contents contain relatively little moisture. The film is a multilayer structure with a sealing layer containing a water-soluble antibacterial agent. The film is made primarily of propylene resin (75% by mass) with less than 25% of foreign components. This allows the film to be recycled as a monomaterial. The film has low water vapor permeability (9.0 g/m2/24hrs) to prevent moisture migration. The antibacterial agent in the sealing layer prevents contamination of the food without migrating to other layers. The film structure prevents the antibacterial agent from escaping into the food.

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Making antibacterial thin films for food packaging using chitosan, organoclay, silver nanoparticles, and zinc oxide nanoparticles. The thin films are prepared by mixing these components in a solvent casting method. The chitosan provides the matrix, organoclay improves mechanical properties, silver nanoparticles provide antimicrobial activity, and zinc oxide nanoparticles further enhance antimicrobial properties. The thin films have reduced solubility, low water vapor transmission, and antibacterial activity against E. coli and S. aureus bacteria.

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Biodegradable food packaging materials made from biopolymers like PLA, nanobacterial cellulose (NBC), and PEG400. The materials can be used for packaging fruits, vegetables, shoots, seeds, etc. The NBC is produced from a specific strain of Bacillus licheniformis. The PLA-NBC composite materials have improved mechanical properties like tensile strength compared to PLA alone. The NBC provides stiffness and PEG400 adds elasticity. The materials are also antimicrobial. The NBC can be coated onto paper or formed into membranes. The PLA-neem extract coating is another biodegradable option.

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Biodegradable food packaging materials made from biodegradable nanocomposites based on polylactic acid (PLA) combined with nano bacterial cellulose (NBC) and optionally polyethylene glycol 400 (PEG400). The nanocomposites can be applied as coatings on secondary surfaces like paper or formed into membranes. The nanocomposites provide improved mechanical strength and barrier properties compared to PLA alone, making them suitable for food packaging. The nanocomposites can also be antibacterial due to the NBC content. The PLA-NBC composites can be prepared by mixing the components with stirring and spreading to dry.

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