190results about "Seed preservation using chemicals" patented technology

The invention discloses a plant essential oil composition for fumigating and killing grain aspergillus flavus. The composition is prepared by utilizing plant or plant essential oil containing cinnamic aldehyde, citral, thymol and salicylaldehyde or by utilizing synthetic identical materials, wherein the parts by weight of the four components in the composition are respectively as follows: 5-20 parts of cinnamic aldehyde, 15-35 parts of citral, 35-60 parts of thymol and 10-35 parts of salicylaldehyde. The composition has the advantages that: the drawing materials are natural, safe and non-toxic; and the volatile essential oil components are easy to diffuse; and the gas of the volatile essential oil is used for fumigating and killing to ensure that the composition needs not be in direct contact with grains and only needs to be put at a corner of a warehouse or a closed container to play a role in efficiently killing the grain aspergillus flavus.

A stable foam of a liquid matrix, gas bubbles and a structuring agent that forms a lamellar or vesicular cage structure without generating a gel imparting a rubbery texture to the foam. The lamellar cage structure entraps at least a substantial portion of the gas bubbles and liquid matrix therein to retain and stabilize the gas bubbles and liquid in a sufficiently compact structure that substantially prevents drainage of the liquid matrix as well as coalescence and creaming of the gas bubbles to maintain stability of the foam even when the foam is subjected to multiple heat shocks.

Pesticidal compositions for the control of beetles in stored food products containing one or more plant essential oils. In addition, the present invention is directed to a method for controlling beetles from accessing stored food products by applying a pesticidally-effective amount of the above pesticidal compositions to a locus where pest control is desired.

Herein disclosed is a method of processing oil, comprising providing a high shear device comprising at least one rotor and at least one complementarily-shaped stator configured to mix a gas with a liquid; contacting a gas with an oil in the high shear device, wherein the gas is an inert gas or a reactive gas; and forming a product, wherein the product is a solution, a dispersion, or combination thereof. Herein also disclosed is a high shear system for processing oil, comprising; at least one high shear device, having an inlet and at least one rotor and at least one complementarily-shaped stator configured to mix a gas with a liquid; a gas source fluidly connected to the inlet; an oil source fluidly connected to the inlet; and a pump positioned upstream of a high shear device, the pump in fluid connection with the inlet and the oil source.

A process and apparatus is disclosed for generating a mixture of phosphine and diluent gas(es). A hydrolysable metal phosphide, preferably magnesium phosphide, is released directly into liquid water under an atmosphere of gas inert to phosphine and in a free-flowing particulate form, composed of loose metal phosphide particles. The generated mixture of phosphine and inert carrier gas, e.g. CO2, is used as such or is diluted into a gas mixing chamber with air to a concentration below the ignitability limit before being used in fumigation. Using argon as a carrier gas the phosphine mixture is suitable for semiconductor doping.

A method for sanitation and preservation of foodstuffs includes the following steps. A container containing a foodstuff is provided. A non-thermal plasma is introduced to an interior of the container. The container is sealed.

This invention relates to a novel method for the storage and transport of fresh fruit, vegetables and cut flowers. More particularly, this invention pertains to a novel method to prolong the postharvest life of such horticultural produce that is packaged in a modified atmosphere by the inclusion of a small amount of nitric oxide gas into the package.

The invention discloses a new application of sodium bisulfide (hydrogen sulfide donor) in promoting the storage and preservation of fruits and vegetables, i.e. an application of the sodium bisulfide (hydrogen sulfide donor) as fresh cut fruit-vegetable fresh-keeping agent. The sodium bisulfide (hydrogen sulfide donor) has a fresh-keeping effect on fresh cut vegetables such as broccoli, asparagus lettuce, lotus root, yam, pumpkin, sweet potato and potato and the like, and fresh cut fruits such as apple, pear, Chinese goosebeery, tomato, Hami melon and peach and the like. The sodium bisulfide can notably delay the wilting, dehydration, ripening, aging and mildewing of fresh cut fruits and vegetables, keep the quality characteristics of picked fruits and vegetables and prolong the storage periods and shelf lives of picked fresh cut fruits and vegetables by 0.5 to 12 days. The fresh-keeping agent can be used for keeping freshing on a variety of the picked fresh cut fruits and vegetables.

A method and system for sanitizing grain products, and more particularly, a method and system for using improved ozone treatment techniques and systems to sanitize grain products.

The invention relates to an active preservation package of grain, comprising preservative film bag, gas modifier, and grain products. The film bag is polyethylene (PE) or polyvinyl chloride (PVC), the most suitable ventilation ratio Rho0 (CO2:O2) of carbon dioxide to oxygen is 1.3-7.0; main ingredients in small bag of gas modifier are malic acid, sodium bicarbonate, silica gel, calcium stearate, starch, and so on; the concentration of oxygen is controlled below 2%, while the carbon oxygen is controlled in the range of 50%-80%. Using the invention, the rice can be preserved in the active preservation bag for 9 months at normal temperature, without insects and mildew. The quality indexes of fatty acid, total acid, reducing sugar, viscosity, etc. are obvious better than the contrast (general preservation). The taste can be kept as the flavor of fresh rice with total loss smaller than 1%.

The invention provides a compound agent, which is prepared by performing binary compounding on plant-source compounds of ethyl isothiocyanate and allyl isothiocyanate according to the weight ratio of 1:7-7:1. The compound agent can be prepared into a dissoluble liquid, an aqueous emulsion, an oil solution or a tablet, and is applied to preparing a pesticide fumigant for controlling insect pests and harmful mould fungi in storehouses and soil. The compound agent has the advantages of obvious synergy, high bacteriostatic and insecticidal activity, less relative usage, and obvious fumigation effect on pests of food, tobacco and soil nematodes and the like, and can be used for substituting bromomethane which is forbidden fumigant.

The invention discloses a Chinese chestnut brown stain preventing processing method which comprises the following steps of: 1, screening Chinese chestnuts; 2, processing at low temperature; 3, processing with CO2: putting the Chinese chestnuts in an environment with the CO2 concentration of 5-30 percent (volume) and temperature of 10-20 DEG C and relative humidity of 85-95 percent for 2-20 days; 4, carrying out gas stifling treatment on the Chinese chestnuts by adopting ethylene or alcohol; 5, removing hulls and red skins; 6, inactivating enzyme: putting Chinese chestnut kernels in food-grade acidic liquid with the temperature of 80-100 DEG C or food-grade acidic stream with the temperature of 100-110 DEG C, and controlling the pH value of the liquid or stream to be 1-6 and the processing time to be 5-20min; 7, curing: putting the Chinese chestnut kernels into food-grade alkali liquid with pH value of 7-12 at a temperature of 90-100 DEG C, and processing for 5-20min; 8, bagging and sealing; 9, sterilizing with back pressure at high temperature and high pressure; and 10, cooling to normal temperature for storing. The Chinese chestnuts processed by using the technology maintain the special grain flavor and the sweetness while keeping the natural yellow color, and is best in color, favor and taste.

A method for treating grain comprising circulating concentrated ozone through an evenly distributed column of grain to maintain a concentration of between 50 and 100 ppm.

New pesticide compositions comprising an alkyl formate and an isothiocyanic ester are described, as are methods of delivering fumigants and methods of pest control using a combination of fumigants.

The invention discloses a novel grain storage four-in-one technology and two-way ventilation, circulation, air conditioning and ozone grain storage system, and belongs to the technical field of mechanical ventilation for grain. The system aims at solving the problem that in the existing grain storage process, grain in a barn ages and mildews due to the low circulation ventilation technology level. The system comprises a barn wall, a ventilation circulation pipe, a grain ventilation cage and a two-way mixed flow fan, wherein the ventilation circulation pipe is installed on the inner side wall of the barn wall, the barn ventilation cage is installed on the bottom surface of a barn, the two-way mixed flow fan is installed at the lower end of the ventilation circulation pipe and arranged in the grain ventilation cage, and a first ventilation opening and a second ventilation opening are formed in the upper end and the lower end of the barn wall respectively. The system is compact in structure, control is convenient, ventilation circulation can be effectively achieved to prevent grain from ageing and mildewing, and the effects of killing microorganisms, grain storage pests and worm eggs and purifying grain piles can be achieved.

A method for injecting or forcing an ammonia-based pH modifying material into the interior of a meat product to raise the pH at one or more points within the interior of the meat product preferably to a pH above approximately 6.0. The ammonia-based pH modifying material may comprise aqueous ammonia (ammonium hydroxide solution) or a gas including some ammonia gas fraction. The temperature of the meat product may be controlled to a temperature near or just below the initial freezing temperature of the meat product during the time that the pH modifying material is injected. pH decreasing materials may be injected into the interior of the meat product either before or after injection the ammonia-based pH modifying material.

The invention discloses a grain fresh keeping method, which comprises the following steps: detecting the temperature, humidity and oxygen concentration of air in a granary; when the oxygen concentration in the granary is greater than a set value, introducing nitrogen or carbon dioxide into the granary; when the temperature in the granary is deviated from the set value, introducing cold or hot air into the granary so as to adjust the temperature of the granary back to the set value; and when the humidity in the granary is deviated from the set value, adjusting the humidity in the granary to the set value. Through the method, the oxygen concentration, humidity and temperature of the air in the granary are controlled respectively to make the granary in a hypoxic, constant humidity and constant temperature state to further restrict the breath of grains, so the metabolism of the grains can be maximally slowed down on the premise that the grains are kept in normal life processes, the maturity of the grains is maximally prolonged and the aims of storage and fresh keeping are fulfilled.

Systems and methods for treating grain stored in a grain pile with ozone are effective for treating grain for toxins, insects, mold, and / or odor. A method according to embodiments of the invention involves monitoring at least one of temperature and odor at a plurality of aeration outlet locations spaced around the grain pile. When an abnormal temperature variance or odor is detected at one or more of the aeration outlet locations, a determination is made as to a problem location within the grain pile where a treatment of ozone should be applied, and a further determination is made as to how best to apply ozone to the problem location. Ozone is then applied to the problem location within the grain pile to minimize nascent problems in the grain pile. The ozone treatment may reduce molds and toxins.

Methods are provided which include steeping and / or spraying a harvested cereal grain, such as barley, wheat, rye, millet, corn (maize), rice, or oats, in or with an aqueous solution including an effective amount of chlorine dioxide to provide a treated cereal grain. The treated cereal grain obtained from chlorine-dioxide steeping and / or spraying generally has a reduced microorganism and / or toxin content, and may be subjected to additional malting processes.

High concentration, that is, strong antimicrobial treatment materials such as high concentration aqueous ammonia solutions or even liquid ammonia may be applied to a foodstuff without deleterious effects by controlling the temperature of the foodstuff at or immediately after the time of contact with the antimicrobial treatment material. In particular, ice crystals are maintained at or just below the surface of the foodstuff at or immediately after the time of contact with the antimicrobial treatment material. The ice crystals in the foodstuff inhibit absorption of the antimicrobial treatment material into the foodstuff.

The invention relates to a method for preserving fresh walnut fruit, aiming at solving the problems that oxidation, rancidity, molding, sprouting, dehydration and the like of fresh walnut fruit are easy to occur when the fresh walnut fruit are preserved. The method mainly comprises the following steps: selecting complete fruits, soaking in calcium chloride in a refrigeration house, fumigating with thiabendazole, leaving the fruit to stand, sealing, packaging in vacuum, storing, delivering, and the like, thereby achieving preservation of the fresh walnut fruit. As the walnut fruit is sealed and packaged under an anaerobic condition, the green peel of walnuts can be prevented from being softened, the fresh walnuts are prevented from rot or metamorphism, the water content of the fresh walnut fruit is kept, the change velocities of grease acid values and peroxidation values are reduced, the generation of malondialdehyde is inhibited, the iodine value can be relatively well maintained, the good quality is maintained, the brown stain index of the green peel of the fresh walnut fruit after being preserved for 120 days is 0.13, the complete fruit rate is more than 95%, and the preserved fresh walnut fruit is all good in color, fragrance, taste and shape.

The gaseous chemical compound, carbonyl sulphide, has hitherto been unknown as a fumigant for the control of insects and mites. Experiments have shown conclusively that carbonyl sulphide can be used as such a fumigant, with fumigation properties comparable to those of phosphine and methyl bromide. The effectiveness of carbonyl sulphide against insects (both adult and immature stages), mites, termites and moulds is demonstrated. In addition, its low absorbtion by grain, lower flammability than phosphine, lack of influence on seed germination, and apparent environmental safety make carbonyl sulphide particularly beneficial as a fumigant of stored grain. It may also be used to fumigate other stored produce (including perishable foodstuff), soil, timber and spaces (such as buildings) and any material likely to be infested by insects or mites, or act as a source of such infestation.

The invention discloses a recirculation fumigation system and method for a granary. The system comprises at least a group of recirculation device, wherein the recirculation device comprises return pipes, recirculation fans, air distribution boxes and ground ventiducts; the top ends of the return pipes are arranged above the grain surface; the lower parts of the return pipes are communicated with one ends of the recirculation fans; the other ends of the recirculation fans are communicated with external first vents by first valves and are communicated with the air distribution boxes by third valves; the air distribution boxes are communicated with external second vents by second valves; and the ground ventiducts are arranged at the bottom of a granary and are communicated with the air distribution boxes. By adopting the above technical scheme, the system and the method have the following beneficial effects that: the air with drug properties circulates from the bottom of the grain to the grain surface, thus ensuring the grain to be more fully contacted with the drugs and ensuring a better insecticidal effect.

The present invention relates to a rice dispenser with fresh-keeping function and quantitative switch. It includes external box, in the upper cavity of rear portion of said external box an internal box is set, in the front cavity of said external box an electric control component is set. The upper wall of said internal box interior is equipped with an ozone tube for producing ozone gas, the lower portion of said internal box is equipped with a quantitative switch mechanism. Said ozone tube and quantitative switch mechanism are respectively connected with the above-mentioned electric control component. Said invention can utilize ozone gas to protect cleanliness and freshness of rice, and can prolong the storage time of rice.

The invention discloses an intelligent grain case comprising a case body and a case cover. The upper part inside the case body is provided with a liner; under the liner is communicated with a quantitative withdrawing device; a telescopic box is arranged under the quantitative withdrawing device; an environment induction adjusting system is arranged between the case body and the liner; a controller of the environment induction adjusting system is connected with a wireless communication module; the case body and / or the outer wall of the case cover is provided with a display module; and the display module is connected to the controller via wired and / or wireless communication. The intelligent grain case has great storage sealing property; the environment induction adjusting system including temperature and humidity is disposed in the case, so temperature and humidity of the liner of the case body can be detected and intelligently adjusted in real-time; the liner can be fresh-cared, disinfected, deodorized via a fresh-caring device and damp and mite growth possibilities can be reduced; liner storage environment condition parameters can be set in advance; the changed parameters can be sent to a network via a communication module and further to mobile terminals, such as a mobile phone; and the intelligent grain case has high intelligent degree and strong reliability.

A method includes applying a treatment material containing carbon monoxide to an initial meat product to produce an intermediate meat product. Once the treatment material containing carbon monoxide is applied to the initial meat product to produce the intermediate product, the intermediate meat product is comminuted to produce a final comminuted meat product. The method may further include applying a pH modifying material to the initial meat product or intermediate meat product. The pH modifying material may be applied as either a pre-treatment before applying the carbon monoxide-bearing treatment material, as part of the treatment material containing carbon monoxide, or as a post-treatment after applying the treatment material containing carbon monoxide. A pH modifying material applied to the meat product may include ammonia-based pH modifying materials such as ammonia gas and ammonium hydroxide solution, and carbon dioxide-based pH modifying materials such as carbon dioxide gas and carbonic acid solutions.

Methods and systems for treatment of grain in a storage container using ozone may be used for treating grain for toxins, insects, mold, and / or odor. Downdraft methods for applying high concentrations of ozone to grain in a storage container treat grain without generating ozone-related objectionable odors or with generation of only minimal ozone-related objectionable odors. A method for downdraft ozone treatment of grain with minimal generation of ozone-related objectionable odors involves providing a negative air pressure at a bottom of a volume of grain in a storage container. A high ozone concentration is generated in air above an upper surface of the volume of grain. The ozone is drawn down into the volume of grain using the negative air pressure for a treatment time sufficient to effectively treat the grain without causing significant ozone-related commercially-objectionable foreign odors in the grain.

The invention discloses a microcapsule preparation containing allyl isothiocyanate and a preparation method and application of the microcapsule preparation. The microcapsule preparation is prepared from a wall material-the polyethylene glycol and a core material-a mixture of the allyl isothiocyanate and allicin and is prepared by the following steps: (1) heating the polyethylene glycol till being melted, maintaining the constant temperature, quickly adding the mixture of the allyl isothiocyanate and the allicin into the melted polyethylene glycol and stirring to form a uniform co-melt of the allyl isothiocyanate, the allicin and the polyethylene glycol; and (2) after naturally cooling, grinding, crushing, and sieving to obtain the microcapsule preparation. The microcapsule preparation containing allyl isothiocyanate disclosed by the invention is high in embedding ratio and strong in synergism, can effectively improve the stability of active ingredients containing the allyl isothiocyanate, prolong the persistence, reduce the toxicity, shelter peculiar smell and reduce the environmental pollution, and has the relatively strong cost advantage and economic benefit and the relatively good preventing and treating effects.