Nanotechnology Based Ethylene Scavengers for F&B Packaging

Polymer-bound zeolites with the CHA framework type for adsorbing volatile organic compounds (VOCs) like ethylene from organic matter and packaging materials. The CHA zeolites are doped with palladium and encapsulated in a polymer matrix to prevent leaching during use. This provides stable, high-capacity adsorbents for VOC removal that can be incorporated into packaging films and coatings to control the internal atmosphere of produce containers and prevent spoilage.

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A composition for extending the shelf life of produce by controlling ethylene production and microbial growth through a combination of ethylene scavenging and antimicrobial agents. The composition comprises a base material such as polyester, combined with an ethylene scavenging agent and an antimicrobial agent. The ethylene scavenging agent neutralizes ethylene gas, while the antimicrobial agent inhibits the growth of microorganisms that contribute to spoilage. This composition can be applied to storage containers like corrugated boxes to prevent ethylene-related spoilage and extend the shelf life of produce.

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Packaging materials with built-in adsorbents to remove volatile organic compounds (VOCs) like ethylene from fruits and vegetables during storage and transportation. The materials use palladium-doped zeolites with the CHA framework type that are polymer-bound to prevent loss of adsorption capacity. The zeolites are dispersed in the packaging film layers or coated on the film surfaces. The polymer encapsulation protects the zeolites from water while allowing VOC adsorption.

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Using polymer-bound palladium-doped zeolites with a CHA framework type for adsorbing volatile organic compounds (VOCs) in packaging materials like films and coatings. The zeolites retain significant adsorption capacity when polymer-bound, providing a stable and effective way to remove VOCs from packaging.

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Doped zeolites with palladium and bismuth for ethylene adsorption in perishable organic matter packaging. The zeolites have a BEA structure with a specific SAR (SiO2/Al2O3 ratio) and contain 0.5 wt% of other metals (Pd and Bi) on a total weight basis. These doped zeolites exhibit enhanced ethylene adsorption capacity compared to pure palladium-doped zeolites, particularly for ethylene within fresh produce packaging.

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Silicone elastomer coatings with inorganic ethylene adsorbents for controlled ethylene removal from packaging materials. The coatings combine silicone elastomers with zeolites, which encapsulate ethylene adsorbents, providing stable and efficient ethylene capture. The coatings can be applied to packaging materials like films and bags, enabling controlled ethylene management through selective ethylene removal.

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Obtaining a nanocomposite formed by polycaprolactone (PCL) with MCM-48 nanoparticles (NPs) modified with 3- (aminopropyl) triethoxysilane (APTES) (MCM-48-NH2 NPs) for use in food packaging. The nanocomposite has improved thermal stability compared to pure PCL due to the MCM-48-NH2 NPs containing polar groups that interact with water molecules. Gamma irradiation at 25 kGy did not significantly affect the mechanical properties of the nanocomposite.

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Packaging films for removing volatile organic compounds (VOCs) like ethylene from organic products during storage and transport. The films contain small or medium pore palladium-doped zeolite particles dispersed in the polymer layer. The zeolite adsorbs VOCs from the product environment to extend shelf life by preventing accelerated ripening, spoilage, and discoloration. The zeolite particles are blended with the polymer and extruded to form the film layer. The palladium doping enhances VOC adsorption capacity.

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Using palladium-doped zeolites bound to polymers for adsorbing volatile organic compounds (VOCs) from packaging materials and organic substances like fruits and vegetables. The zeolites with a specific CHA structure are combined with polymers to create materials like packaging films or coatings. This allows adsorbing VOCs internally from produce or externally during transportation without impacting performance. The zeolite-polymer composite can be prepared by mixing zeolite particles with a polymer and extruding it into a film.

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Packaging films for produce that adsorb volatile organic compounds (VOCs) like ethylene to prolong shelf life. The films contain palladium-doped zeolite particles dispersed in the polymer layer. The zeolites have small or medium pore sizes. The zeolites retain significant VOC adsorption capacity when incorporated into the polymer film compared to free zeolote powder. This allows using the zeolites in polymer films instead of separate adsorbent inserts. The films can be made by compounding zeolite and polymer then extruding.

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Shelf-life enhancer composition for preserving perishable items like fruits and vegetables. The composition comprises a catalyst and an adsorbent, where the catalyst is a metal oxide that selectively oxidizes ethylene gas, while the adsorbent facilitates ethylene absorption. This dual-action system prevents ethylene accumulation while promoting rapid ethylene oxidation, thereby extending shelf life.

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Nano food packaging material that combines barrier properties with antibacterial properties to enhance food preservation through synergistic effects. The material comprises a nanostructured polymer matrix with integrated antimicrobial agents, exhibiting superior barrier properties and mechanical strength. This nano-packaging system effectively prevents microbial growth while maintaining the food's nutritional and sensory characteristics, enabling extended shelf life and improved food safety.

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A nano-a-Fe2O3 functional modified PVA-based composite coating film for food packaging that combines antibacterial properties with improved moisture barrier properties. The coating film incorporates nano-sized iron oxide nanoparticles into a PVA matrix, enhancing its antimicrobial activity while maintaining its hydrophilic properties. This composite film provides enhanced barrier protection against moisture and gas migration, while maintaining the food's freshness and safety.

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Polymer-bound palladium-doped zeolites for adsorbing volatile organic compounds (VOCs) from organic matter like fruits and vegetables during storage and transportation. The zeolites have the CHA framework type and are incorporated into packaging materials like films and coatings. The polymer binding prevents loss of adsorption capacity compared to loose zeolite powder. The polymer films and coatings can be used to line produce containers or wraps to remove VOCs like ethylene.

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Packaging films for fresh produce that adsorb volatile organic compounds (VOCs) like ethylene to extend shelf life by integrating palladium-doped zeolite particles into the film. The zeolite particles are dispersed in the polymer film layer during extrusion to make the film. The zeolites retain significant VOC adsorption capacity despite the processing conditions. This allows the adsorbent to be directly incorporated into the packaging film rather than using separate inserts, protecting the adsorbent from moisture, and reducing processing steps. The zeolites have small or medium pore frameworks like CHA or AEI types.

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A nano-temperature fresh-keeping carton that utilizes a novel nanostructured membrane to enhance gas exchange between the food and the environment. The carton features a membrane with nano-scale pores that allow controlled gas exchange while maintaining the food's internal environment. This membrane structure prevents the buildup of ethylene gas, a key factor in fruit ripening, while maintaining the optimal conditions for food preservation.

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Multilayer nanocomposite packaging film with improved mechanical properties and reduced environmental impact. The film has a core layer sandwiched between outer layers. The core and/or outer layers are made from a polymer composition containing ethylene polymer, nanoclay with organic surface treatment, and a compatibilizer with olefin and polar components. The nanoclay improves strength, the compatibilizer enhances compatibility between the polymer components, and the reduced clay content compared to pure clay improves elongation. The nanoclay amount is 0.1-20 wt%, ethylene is 70-99 wt%, and compatibilizer is 0.05-15 wt%.

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A nanocomposite packaging material with enhanced preservation properties, comprising silver nanoparticles, titanium dioxide, deacetylated chitin, low-density polyethylene, vinyl alcohol copolymer, tea tree oil, rock bluegrass oil, silane coupling agent, N-β-aminoethyl-γ-aminopropyltrimethoxysilane, and ethylene bis-stearic acid amide. The material combines these components in specific weight ratios to create a nanocomposite that effectively protects fresh produce during transportation and storage by controlling moisture absorption and oxidation.

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Film for packaging that selectively removes volatile organic compounds from the environment. The film contains a binder and particulate protuberant component that selectively captures volatile organic compounds, such as ethylene, from the surrounding environment. The film can be used in packaging structures for food products, particularly for items that emit ethylene as a ripening agent.

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Antimicrobial cling film containing nanomaterials to prevent bacterial growth and viruses on food stored in the film. The film composition includes tapioca starch, konjac powder, polyethyleneimine, polyethylene oxide, propylene glycol alginate, sorbitol, nano jade powder, rosemary essential oil, nano silver, chitosan nanoparticles, sucrose esters, citric acid, lauryl glucoside, improved help agent, nano-diamond, nano zinc oxide, nano titanium dioxide, water-soluble propolis, bamboo charcoal powder, and hydroxyethyl cellulose. The film is prepared by dissolving the ingredients in water, homogenizing, degassing, coating on a carrier, and drying.

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