701 results about "Modified atmosphere" patented technology

This invention relates to a novel method and apparatus for packaging and shipping horticultural products including cut flowers. More particularly, this invention pertains to a novel method of and packaging for packaging cut flowers in a modified atmosphere package to prolong shelf life, shipping the packaged flowers to the destination, and then at the destination, opening the package and rehydrating the cut flowers in the package by saturating the stems of the flowers with water.

The present invention relates to the non-invasive use of a luminescent compound to detect and measure concentrations of oxygen dissolved in a rigid container, especially a bottle, a tray, a carton, a lidstock associated with a tray, a stand up pouch, or a paperboard container. The measurement is made independent of the oxygen concentration of the surrounding atmosphere. The invention is especially useful as a quality assurance check to verify oxygen scavenger activation during the assembly of bottled products, and modified atmosphere and vacuum packages. The method according to the invention is faster and less wasteful than previous methods that rely on measuring oxygen concentration within the headspace of an assembled package.

A package for storing oxygen-sensitive goods (such as meat) which contains a gas impermeable tray wrapped in a gas permeable film, a barrier bag within which the wrapped tray is disposed, a closure for closing an open end of the barrier bag, and two one-way valves. One of the one-way valves is located on the inside of one side of the barrier bag, and the other of the one-way valves is located on the outside of the other side of the barrier bag.

The invention discloses a modified atmosphere storage method which includes the steps: (a) a to-be-stored article or the to-be-stored article and a modified atmosphere agent are placed in a modified atmosphere box which comprises a box cover and a box body, wherein the box cover or the box body is provided with a detection valve, and a sealing structure is arranged between the box cover and the box body; (b) the box cover of the modified atmosphere box covers the modified atmosphere box, and the detection valve is turned off; (c) according to requirements, the detection valve of the modified atmosphere box is connected with a detection instrument so that oxygen concentration, carbon dioxide concentration, temperature, humidity and ethylene concentration in the box body can be detected. A traditional modified atmosphere store system is minimized, the modified atmosphere box is used for storage, application of a modified atmosphere technique can be simple, application ranges are wide, and the modified atmosphere box can be used for storage and maintenance of Chinese herbal medicines, tobaccos, fresh fruit and vegetables, dried fruit, tea, dried vegetables and the like, facilitates transportation, and reduces comprehensive maintenance cost of the modified atmosphere store after the controller atmosphere technique is applied.

The invention relates to an aquatic vegetable preservative, which comprises citric acid, calcium chloride, sodium tripolyphosphate and vitamin C solution; the quality percentage concentration of the components are that: citric acid accounts for 0.15 percent to 0.2 percent; calcium chloride accounts for 0.5 percent; sodium tripolyphosphate accounts for 0.3 percent to 0.5 percent ; and vitamin C occupies 0.15 percent to 0.2 percent. The invention can be used in the refreshment of fresh lotus seeds, fresh water bamboo and fresh lotus root. The preservation methods are that: firstly, after the processing of sterilization, the fresh lotus seeds, fresh water bamboo and fresh lotus root are soaked for 15 minutes by the chlorine dioxide in a certain concentration; secondly, the dried fresh lotus seeds, fresh water bamboo and fresh lotus root are soaked and sterilized for 2 hours by the preservative in a certain percentage, and then the free water on which is drained; thirdly, a vacuum packaging or modified atmosphere packaging can be implemented for the materials, and then is arranged in the environment under 0 DEG C to 5 DEG C for storage; the shelf life for the aquatic vegetable is more than or equal to 60 days. After the toxicity test, the preservative is in a relative non-toxic level. The invention has the advantages of safety and high efficiency without sulfite components.

Oriented polyolefin films are prepared with blends of a high crystalline polypropylene and an ethylene/propylene copolymer having less than 10%, by weight, of ethylene. These films, in a preferred embodiment, exhibit higher oxygen and moisture vapor transmission properties than do unmodified polypropylene. In addition, these films have low haze. This combination of properties make the films useful in modified atmosphere packaging applications for fresh produce and flowers.

The invention provides a fruit and vegetable fresh-keeping agent prepared from the following raw materials in parts by weight: 1-10 parts of gum bletilla, 1-10 parts of Chinese medicinal plant and 0.01-0.2 part of nano titanium dioxide. The invention further provides a preparation method of the fruit and vegetable fresh-keeping agent. The fruit and vegetable fresh-keeping agent disclosed by the invention can be applied to preserving various fruits and vegetables, wherein the mango is taken as an experimental subject in an experiment, and the Chinese medicine extract with a remarkable inhibition function on pathogenicbacteria in the mango is prepared and then is firstly organically compounded with the traditional Chinese medicine gum bletilla and the nano titanium dioxide to prepare into the green and safe Chinese medicine fruit and vegetable fresh-keeping agent. The fruit and vegetable fresh-keeping agent disclosed by the invention breaks through the modified atmosphere preservation of fruits and vegetables, the natural bacteriostat application and the safety, and also brings very remarkable economic and social benefits.

A food package having multiple containers with separate gas atmospheres for storing foods. A first container comprises a plastic bowl and a second container comprises a plastic tray configured to fit within the bowl. The tray includes a plurality of compartments configured to discretely store different foods. The tray is film sealed in an atmosphere configured to maintain the particular foods stored in the tray. The bowl is film sealed, with the film sealed tray inside, in an atmosphere configured to maintain the particular foods stored in the bowl. An optional lid may be applied to the top of the bowl. The atmosphere in the tray and the atmosphere in the bowl preferably are different, and preferably are modified from a standard atmosphere, the exact composition of each atmosphere dependent upon the particular foods and/or food components stored therein. In some embodiments, either the bowl or the tray may be sealed in a standard atmosphere, while the other container is sealed in a modified atmosphere. In some embodiments, such as when the bowl contains a standard atmosphere, the bowl may not be film sealed, but instead may be fitted only with a lid.

A diagnostic apparatus including a terahertz generator taking the form of a femtosecond laser exciting either an optoelectric crystal of a photoconductive dipole antenna the terahertz radiation is directed onto a target preferably held close by or abutting an enclosure including a reflection receiving window and housing terahertz detector for detecting terahertz radiation. Preferably the terahertz radiation generator forms part of the receiving window. The enclosure has a modified atmosphere to permit ready transmission of terahertz radiation. A beam splitter is positioned between the laser and the terahertz generator to split off a probe laser beam from the terahertz inducing laser radiation which is also directed to the detector means. The output from the detector being determined by the amplitude of that part of the reflected teraherz radiation wave coaligned with the probe laser at the detector. A delay is positioned in the probe laser path to altering the length of the probe laser path over terahertz subwavelength distances so that different parts of the terahertz wave form can be interrogated by the probe laser to thereby ascertain the shape and dimensions of the reflected terahertz radiation.

The invention relates to a device for preserving, sanitizing, ripening, and preventing or suppressing the growth of microbials within a package used for the transport and storage of various items, such as fresh fruits, vegetables, and other perishables and parcels. The device includes an enclosed container and at least one sack operably disposed adjacent the container, wherein the sack encloses an agent and the agent releases gases in the container upon the presence of humidity within the container.

The invention relates to a method for producing a nano-antimicrobial preservative film for fruits and vegetables, and belongs to the agricultural product and food preservation technical field. The method is characterized in that: 60 to 80 percent of polyethylene (wherein, the adding proportion of linear low density polyethylene and low density polyethylene is 3 to 1), 10 to 20 percent of ethylene-vinyl acetate copolymer, 2 to 5 percent of nano-antibacterial master batch, 2 to 7 percent of anti-condensation master batch, and 2 to 5 percent of degradable master batch are added. The nano-antimicrobial preservative film is produced by adopting a film blowing method, has the functions of bacteriostasis and spontaneous modified atmosphere, and contributes to prolonging the preservation storage period of the fruits and the vegetables and improving the commercial value of the fruits and the vegetables.

The invention discloses a modified atmosphere freshness-retaining method for vegetables, comprising the following steps that: (1) the vegetables to be preserved are picked and selected; (2) the vegetables which are picked and selected are subjected to pre-cooling; (3) after pre-cooling, the vegetables are sterilized; (4) the vegetables which are sterilized are put in a packaging container and the mixed gas of oxygen, carbon dioxide and nitrogen is introduced into the packaging container to lead the nitrogen concentration to be 85-95%, the oxygen concentration to be 1-8% and the carbon dioxide concentration to be 1-6%; (5) after modified atmosphere packaging, the vegetables are put in a refrigerator for cold storage. The freshness-retaining method disclosed by the invention can prohibit in vivo respiration of the vegetables and preserve the water in the vegetables, thereby prolonging the freshness-retaining time thereof.

The invention is a modified atmosphere package comprising about 0.1 to 5 vol. % carbon monoxide and that includes a time-temperature indicator that is disposed in a temperature monitoring relationship with the package and that is configured to indicate whether a perishable product disposed in the package has been exposed to a time-temperature exposure that may have caused spoilage of the product. The time-temperature indicator may be used to alert a person that a red meat product disposed in the package has potentially spoiled even though the meat product may have a fresh “bloomed” appearance. As a result, the possibility of a consumer purchasing a spoiled product may be reduced. The invention is also directed to a method of using the time-temperature indicator to indicate the likelihood of spoilage in the packaged product. In one embodiment, the time-temperature indicator changes visual appearance based on a combination of predetermined times and temperatures.

Apparatus including a flow channel defined by a floor, roof, and sidewall structure connecting the floor and roof. One or more combustion burners is positioned in either the roof, the sidewall structure, or both, and transfer heat to a molten mass of glass containing bubbles having a bubble atmosphere flowing through the flow channel. The burners contribute to formation of a channel atmosphere above the molten glass. Apparatus includes a device, at least a portion of which is positionable under a level of the molten glass in the flow channel, configured to emit a composition into the molten glass under the level to intimately contact the composition with the molten glass and bubbles therein. The composition diffuses into the bubbles to form modified atmosphere bubbles sufficiently different from the channel atmosphere to increase diffusion of a species in the channel atmosphere into the modified atmosphere bubbles.

The invention discloses a fruit and vegetable atmosphere-controlled fresh-keeping transportation system and a control method thereof, and the oxygen content in a van body is reduced by means of direct liquid nitrogen injection; oxygen-rich gas is discharged from the airtight van body through an exhaust solenoid valve at the same time as liquid nitrogen injection so as to realize the rapid reduction of the oxygen content in the van body; a central liquid nitrogen injection atmosphere-controlled platform is adopted, and one central liquid nitrogen injection atmosphere-controlled platform can beused in multiple economical intelligent atmosphere-controlled fresh-keeping transportation vehicles; not only the oxygen reduction speed is high, but also the cost is greatly reduced; a humidifying system is installed, which controls the humidity of the van body; a drainage system is installed, which starts a drainage device by a temperature controller, timely discharges accumulated water generated during the fruit and vegetable respiration, the temperature control process and the humidification process, and reduces pathogen propagation; a ventilation system is installed, and a double fan mode is adopted; when the differences of ambient temperature, humidity and oxygen concentration in the van are large, the fans are started to reduce the temperature difference, humidity difference, and oxygen concentration difference.

The invention discloses a combined refreshing method for prolonging the shelf life of a fresh vegetable lotus seed, belonging to the technical field of fruit and vegetable refreshing and storing. The fresh lotus seed has the characteristics of difficulty in refreshing and storing and acceleration for the deterioration of quality and taste. The high-quality raw materials can be obtained by controlling the harvesting maturity and harvesting in due time according to the unified standard. By adopting vacuum pre-cooling, the field respiration heat of the fresh lotus seed can be quickly eliminated and the quality loss can be prevented. According to the invention, by using 1-methylcyclopropene (1-MCP) to fumigate on the fresh lotus see at lower temperature or room temperature, the ageing and the late maturity of the lotus seed can retarded; by pressurizing the mixed gas of argon gas and xenon gas or the mixed gas of argon gas and krypton gas at the pressure of 20MPa for one hour to carry out the water structured treatment for the fresh lotus seed, the activity of water molecules and the activities of various enzymes in the fresh lotus seed can be reduced and the metabolic activities of the lotus seed can be inhibited. Meanwhile, by combining with modified atmosphere packaging (MAP), the fresh lotus seed is cold stored at the temperature of 2-4DEG C so as to well maintain the quality and the taste of the lotus seed. The lotus seed can be refreshed for 15-16 days; and the shelf life of the lotus seed is 11-13 days longer than that of the untreated lotus seed stored at normal temperature and is 8-10 days longer than that of untreated lotus which is cold stored .

The invention discloses a fresh-keeping method for muskmelons; the method comprises the following specific steps: 1), selecting medium well-done muskmelons, picking, performing an overshadow treatment on the picked muskmelons by using a reflecting film; 2), performing 1-MCP (1-methylcyclopropene) fumigation on the muskmelons; 3), soaking the muskmelons in water; 4), blowing to dry the surfaces of the muskmelons; 5), spraying a fruit wax containing a fresh-keeping agent on the muskmelons; 6), drying the surfaces of the muskmelons; 7), putting the muskmelons in a refrigerator in which the temperature is 0 DEG C to 1 DEC C and the relative humidity is 75% to 85%, and pre-refrigerating for 1-2 days; 6), packaging each muskmelon by a micro-pore modified atmosphere fresh-keeping film; and 9), suspending the packaged muskmelons in the refrigerator in which the temperature is 0 DEG C to 1 DEC C and the relative humidity is 75% to 85%. The fresh-keeping method for the muskmelons is reliable and effective, and is low in pollution and side effect.

The invention relates to a fresh tealeaf modified atmosphere freshness retaining cabinet which comprises a cuboid cabinet body. An opening is formed in the front side of the cuboid cabinet body. An opening door is hinged to the front side of the cabinet body in a sealing mode. Three parallel partitioning plates are fixedly arranged in the cabinet body horizontally at intervals up and down. The partitioning plates divide the cabinet body into four independent spaces. The three upper spaces are independent temperature spaces, and the bottom independent space is a temperature, humidity, gas and mould proof performance multifunctional adjusting box. Control displaying panels are arranged in the corresponding partitioning plates on the upper portions of the temperature spaces. A tealeaf organic glass box for tealeaf temperature, humidity, gas and mould proof performance adjusting and controlling is arranged on the corresponding partitioning plate in each independent temperature space. The fresh tealeaf freshness retaining cabinet is provided with three relatively-independent tealeaf placing boxes, the three spaces have different storing temperatures respectively, three tealeaf freshness retaining conditions for different temperature requirements can be provided, freshness retaining pertinence is high, and freshness retaining effect is good.

The invention discloses a PE composite preservative packaging membrane for modified atmosphere packaging of foods and a preparation method, which aims at providing a packaging membrane capable of adjusting the gas compositions in the pack so as to further extend the shelf life of the fresh foods. The packaging membrane is prepared through the following raw materials according to a certain weight percentage: 75 per cent to 98 per cent of polymer substrates, 1.5 per cent to 20 per cent of molecular sieves and 0.5 per cent to 5 per cent of plasticizers. By utilizing the molecular sieves as active inorganic particles, the PE composite preservative packaging membrane of the invention ensures that the membrane has favorable permeability, moisture permeability and porosity and is capable of spontaneously adjusting the gas compositions in the pack so as to suppress the respiration of the fresh foods and extend the freshness period of the fresh foods. The invention also discloses a preparation method for PE composite preservative packaging membrane and the packaging membrane prepared through the method has the advantages of uniform membrane, adjustable thickness, tear resistance, impact resistance, high heat sealing strength, simple processing technique, and convenient realization of industrialized production, etc.

The invention relates to a high-efficiency and low-cost preservation method of kiwi fruits, and in particular relates to a preservation method capable of combining microporous preservative films, 1-methylcyclopropene and a low-temperature storage technology of the kiwi fruits, belonging to the technical field of agricultural food science. Aiming at the characteristics of being easily softened and rotten in the storage process of the kiwi fruits, the aim of preservation can be achieved by methods such as modified atmosphere packaging, post-harvest physiological accommodation, control of pathogenic bacteria and low-temperature storage. The method comprises the steps of sorting the fresh kiwi fruits, putting the sorted fresh kiwi fruits into microporous freshness protection packages, fumigating by the 1-methylcyclopropene, fumigating by a preservation smoke agent, precooling, sealing the packages, and storing in a fresh-keeping storehouse with the temperature of 0+/-1 DEG C and the humidity of more than or equal to 80%; after 90 days, fumigating by the preservation smoke agent once every 30 days, and therefore, the kiwi fruits can be effectively stored for 180 days, and have the hardness of more than or equal to 4kg/ m<2> and the edible rate of more than or equal to 90%.

The invention discloses a method for prolonging the storage period of kiwi fruits and belongs to the technical field of agricultural food science. The storage period of the kiwi fruits is prolonged by adopting a method of combining timely harvesting, wound curing treatment after harvesting, spontaneous modified atmosphere PE freshness-keeping bag packaging, repeated low-dose 1-MCP treatment and low-temperature storage. The method comprises the following steps: the kiwi fruits are harvested when the content of soluble solids is between 6.0 Brix and 8.0 Brix, and the hardness is between 9.5-11 kg/cm<2>; after being harvested, the kiwi fruits are subjected to the wound curing treatment for 24-72 hours in the shade at a normal temperature to eliminate the fruits suffering from mechanical injury, defects and disease and pest damages, are sub-packed into PE freshness-keeping bags for ozone sterilization, are pre-stored for 5 days in a freshness-keeping storehouse with the temperature of 8 DEG C and the RH of 90 percent, are pre-cooled for 24 hours after the storehouse temperature is adjusted to 2+/-0.5 DEG C, and the RH is adjusted to 85 percent, and then are laced for storage; when the storage time is 30, 60 and 90 days, the 1-MCP treatment with different concentrations is adopted. The method is a kiwi fruit storage and freshness-keeping method which is efficient, convenient, easy to operate and cheap.

The invention discloses a vegetable fresh-keeping method which includes the steps: (1) sorting and cleaning fresh vegetables, cutting the cleaned vegetables into sections, and placing the vegetables cut into sections into trays; (2) performing sterilization on the trays with the fresh vegetables for 1-15min by leading into low-temperature plasmas; (3) continuing to lead into mixed gas of O2, CO2 and N2 after sterilization, and performing modified atmosphere packaging and refrigeration. The mixed gas of O2, CO2 and N2 generates the low-temperature plasmas through a dielectric barrier discharge device. Microorganisms of the surfaces of the vegetables and the trays can be reduced, corruption rate is slowed down, sense and nutritional quality of products are ensured, the method is obvious in treatment effect, safe, efficient, low in energy consumption, free from exhaust gas residue, simple to operate and convenient and flexible to use, modified atmosphere packaging can be performed by the aid of the trays with stock sizes, and popularization and industrial application are facilitated.

A focal point gassing device or system including a gas supply tube operably connected to supply gas to a focal point gassing head and a screen attached to the lance head, wherein the screen provides high velocity laminarized and directed flow gas to product moving through a vertical form/fill/seal packaging system. The vertical packaging system includes a focal point gassing device and a gassing lance to provide gas to product as it moves from a packaging hopper through a filling tube and into the package. The packaging system includes a gassing control system monitor and adjust the flow of gas to the gassing apparatus.