Active Oxygen Scavenging Food Packaging: Materials & Mechanisms

A smart preservation device that monitors and controls the moisture and oxygen levels inside sealed containers like food packages, to extend shelf life. The device has a chamber inside to hold preservatives like desiccants, deoxidizers or dehumidifiers. It has a Bluetooth module and sensors to measure environmental parameters like humidity and oxygen. When attached to a container, the sensors send data wirelessly. This allows tracking of conditions inside sealed containers without opening them. The device enables monitoring of preservative effectiveness and optimized replacement times.

Source

Coating formulation, article, and method to prepare oxygen scavenging packaging for food preservation. The coating formulation contains an inorganic oxygen scavenger like iron dispersed in a polymer matrix using surfactants, activators, and hydrophilic agents. The dispersion improves oxygen scavenging compared to undispersed powders. The coating can be applied to food packaging to actively remove oxygen from the enclosed space, extending shelf life. The dispersing agents prevent agglomeration of the oxygen scavenger particles.

Source

Double-layer sealed box with activated carbon circulation sealing device that provides improved sealing performance and cost efficiency compared to using inert gases like argon. The sealed box has an inner chamber and an outer chamber separated by a double-layer jacket. Instead of continuously introducing expensive inert gases like argon into the outer chamber, an activated carbon circulation sealing device is used. The device contains activated carbon canisters filled with a water and oxygen scavenging material. The carbon canisters circulate between the outer chamber and an external reservoir to absorb moisture and oxygen from the outer chamber atmosphere. This eliminates the need for continuous inert gas flow and allows recycling of the absorbed water and oxygen. The activated carbon sealing device provides better sealing performance compared to using inert gases, while also reducing costs by avoiding continuous gas flow and enabling recycling.

Source

The new generation of food packaging should not only be biodegradable, but also provide additional protective properties for packaged products, extending their shelf life. In this paper, we present the results research on cast-extruded poly(butylene succinate) (PBS) films coated with hydroxypropyl methylcellulose (HPMC) modified CO2 extract from sea buckthorn (ES) or its ethosomes (ET) at amounts 1 5 pph per HPMC. addition, developed were exposed to accelerated aging (UV radiation and elevated temperature) determine effect films properties. Based SEM, it can concluded that in uncovering coatings bulk. GPC showed a decrease molecular weight PBS after treatment, additionally amplified by presence However, addition ES ET low concentrations reduced level polyester degradation. coating treatment increased oxygen barrier (a 324 cm3/m2 24 h neat 208 ET5). Despite colored coating, color differences compared imperceptible (E < 1). combination resulted complete inhibition growth E. coli S. aureus, which was observed non-aged samples. obtained demonstrate an improvement bioactive ... Read More

Source

Blow-molded plastic containers for food and beverage packaging that have a barrier layer inside the container walls to extend shelf life. The containers are manufactured by injecting a base material into the top mold and then a separate material containing oxygen scavengers into the bottom mold. The bottom layer has inner, outer, and intermediate sections. The oxygen scavenger is only in the intermediate section between the inner and outer layers. This allows targeted placement of the barrier layer without adding it to the entire wall thickness. The inner and outer sections are made of the base material. This avoids using high concentrations of oxygen scavengers in the entire wall, reducing cost. The container is blown from the preform without trimming to preserve the layered structure.

Source

Oxygen scavenger packaging material and oxygen scavenger package that can provide excellent oil resistance and oxygen scavenging performance without using fluorine-containing materials. The packaging material has an inner layer containing a thermoplastic resin, an intermediate layer containing an oil-resistant paper without fluorine, and an outer layer containing a thermoplastic resin. The oxygen scavenger package includes the oxygen scavenger wrapped in this packaging material. The inner and outer layers have air holes passing through them, while the intermediate layer has air holes passing through both inner and outer layers. This allows oxygen scavenging while preventing oil permeation through the intermediate layer.

Source

Oxygen scavenger composition, package, and production method that provides a high oxygen absorption rate in the initial reaction stages for effective deoxygenation. The composition contains iron, a metal salt, and water with optimized water content on the iron surface. This optimized water layer thickness enhances the initial oxygen absorption rate compared to lower or excessive water levels. The package uses an air-permeable container that allows water supply to the composition to maintain the desired water layer. This enables fast deoxygenation in sealed containers by providing an oxygen scavenger with high initial absorption rate.

Source

Composite material for oxygen scavenging and barrier applications that improves oxygen scavenging capacity while preventing agglomeration of nanoparticles. The composite material has a porous silica particle with metal nanoparticles encapsulated within the pores. A polymer coating partially surrounds the silica particle. This design allows oxygen to contact the metal nanoparticles in the pores while preventing particle aggregation. The polymer coating also protects the nanoparticles during handling.

Source

Reducing oxygen degradation of liquids contained in sealed containers by using a combination container with an inner container that has oxygen permeability and an outer container with an oxygen barrier. The inner container with oxygen permeability contains the liquid and is sealed by a stopper. An oxygen absorber is placed between the inner container and the outer container to absorb oxygen. The outer container with the oxygen absorber prevents external oxygen from reaching the inner container. This provides a sealed environment with reduced oxygen levels to prolong the shelf life of the contained liquid.

Source

Oxygen scavenger composition and method for producing it that absorbs oxygen rapidly at the start of an oxidation reaction. The composition is a mixed granule containing a water retention agent, swelling agent, metal salt, water, and iron, all mixed together for granulation. This disperses the iron throughout the granule and keeps it close to water, increasing the initial oxygen absorption rate. The granulation step is done by mixing the components instead of molding, making it simpler and cheaper than prior methods.

Source

Preserving Synsepalum dulcificum (miracle fruit) berries to maintain their potency for extended periods. The preservation method involves separating the pulp of the fresh berry into parts, then freeze drying the berry with the separated pulp. This prevents moisture from degrading the miraculin compound that causes sour foods to taste sweet after eating miracle fruit. The freeze dried berries are also stored in oxygen barrier packaging with an oxygen absorber to further preserve the miraculin potency.

Source

Abstract This study focused on the impact of ascorbic acidloaded fish gelatin nanoparticles/fish skin collagen fiber (ColAAFGNP) antioxidant films for preserving chilled mirror carp. Both control and samples wrapped with exhibited quality deterioration increased storage time, resulting in spoilage by eighth day. The treated ColAAFGNP significant improvements at 10 days compared to control. Specifically, thiobarbituric acid reactive substances, carbonyl content, pH, total volatile base nitrogen, viable count, Psychrophilic bacteria count were reduced 31.7%, 23.9%, 2.2%, 28.1%, 28.6%, 22.4%, respectively. These findings suggested that effectively lipid protein oxidation, microbial growth, decline freshness, thereby extending shelf life least 2 days. In addition, hardness, springiness, chewiness, resilience, lightness, whiteness values film increased, while redness, yellowness centrifugal loss decreased control, indicating color, texture, moisture retention. beneficial effects attributed controlled release nanoparticles, which played a key role scavenging free radicals pr... Read More

Source

Packaging of food plays a crucial role in the enhancement shelf-life products, by acting as barrier between inside packaging and outside environmental conditions. This provides unfavourable conditions for microbes to grow thus remains consumable form longer period time. Several types materials have been used till date such LDPE, HDPE, PET etc. Oxygen scavenger, antimicrobial films taste modifiers are examples active technologies that directly interact with or its surroundings prevent spoilage increases shelf-life. Informed decisions can be made at every stage supply chain due real-time information about condition given intelligent packaging, which is up indicators, sensors data carriers. The integration these technologies, termed smart packaging represents significant advancement, combing preservation improved communication. From early oxygen absorber modern bio-based films, this study charts evolution over It also examines several kinds systems, like flavour control, CO2 ethylene scavengers antioxidant packaging. rising demand reduce wastage guarantee safety underlines necessi... Read More

Source

Blow-molded containers for food packaging with selective barrier layers to improve shelf life. The containers have a two-part molding process. First, a top portion is injection molded from a single material. Then, a bottom portion with inner, outer, and intermediate sections is molded using a combination of the main material and a barrier material like an oxygen scavenger. The intermediate section with the barrier is positioned between the inner and outer sections. This allows a barrier layer to be concentrated and selectively positioned within the wall thickness. The bottom molding is done after the top to avoid trimming waste.

Source

Oxygen removal module for fresh food storage in refrigerators that prevents food spoilage due to oxygen. The module has an electrolyte tank with an air pressure balance port connected to a water tank. The water tank supplements water to the electrolyte tank. This prevents water shortage in the electrolyte tank after long operation due to oxygen consumption. The water tank also has a feeding port with a plug. The electrolyte tank has an oxygen exhaust hole with a floating ball that blocks it when the tank tips over. A pressure release valve is at the top. This allows oxygen removal from the food storage space while preventing water loss issues.

Source

Innovative techniques are used into smart packaging to promote food preservation, guaranteeing longer freshness, increased safety, and less waste. This strategy optimizes quality streamlines supply chain operations by combining intelligent, active, connected technologies. Time-temperature indicators (TTIs), oxygen scavengers, biosensors, radio-frequency identification (RFID) devices, internet-connected digital platforms for real-time monitoring important For extremely perishable goods like seafood, which degrade quickly because of their high protein moisture content, these improvements especially important. Smart reduces waste, improves traceability, guarantees adherence strict safety rules facilitating tracking assessment. An step toward effective sustainable management is this technical development.

Source

Plastic containers for food and beverages that have improved shelf life without compromising recyclability. The containers have selective placement of barrier materials like oxygen scavengers near the center to reduce the total amount needed. This allows using less of the expensive barrier materials while still providing the same or better shelf life. By concentrating the barrier materials in certain areas, less overall barrier material is needed compared to uniform distribution. This enables recycling the containers without yellowing issues that occur with high barrier concentrations. The containers are made by selectively injecting barrier materials into specific layers of the preform.

Source

Oxygen scavenger for storage of products like food and pharmaceuticals that absorbs oxygen without requiring moisture and suppresses change in carbon dioxide gas concentration in the product. The oxygen scavenger contains synthetic amorphous silica impregnated with a drying oil and an oil-soluble metal catalyst. The synthetic amorphous silica acts as a carrier for the oil and catalyst to absorb oxygen. The oil provides the oxygen scavenging reaction and the catalyst promotes oxidation. This allows oxygen scavenging in products with variable humidity without drying out or generating CO2.

Source

Oxygen-absorbing compounds, adhesives, and coatings for packaging materials that can be used to replace oxygen absorbers, gas flushing, and vacuum sealing for packaging. The oxygen-absorbing compounds have unsaturated five-membered rings with electron-donating groups. They are used in adhesives and coatings along with oxidation catalysts to form absorbing layers on packaging. The compounds absorb oxygen during storage and prevent deterioration of packaged goods. They have lower odor compared to traditional absorbers like iron salts.

Source

Oxygen scavenger powder for food packaging that reduces heat generation when the package is opened. The powder contains iron, a metal halide, and a barely water-soluble alkaline agent. The alkaline agent has low water solubility and high pH. It suppresses iron oxidation and heat generation by forming a high pH coating on the iron as moisture is absorbed. This slows iron corrosion when the package is opened.

Source