9results about "Seed preservation using chemicals" patented technology

The application discloses a storage cabinet, belonging to the technical field of grain storage, comprising a cabinet body, at least a vacuum area and a nitrogen area are arranged on the cabinet body, at least one vacuum cabin capable of being opened and closed is arranged in the vacuum area, the vacuum cabin can be in a vacuum environment after being closed, at least one nitrogen cabin capable of being opened and closed is arranged in the nitrogen area, the nitrogen cabin can be in a nitrogen environment after being closed, and a temperature and humidity control system is arranged in the vacuum cabin and the nitrogen cabin. The vacuum cabin and the nitrogen cabin can provide a vacuum storage space and a nitrogen storage space of a low-oxygen environment respectively, so that the growth and reproduction of microorganisms are inhibited, the speed of mildewing and the occurrence of insect pests are reduced, the setting of the temperature and humidity control system can meet the requirements of being cool, dry, sealed and light-proof, moisture and mildewing are prevented, the fresh-keeping effect of household commonly used food such as grains, dried fruits, edible oil and tea and commonly used medicines is met, the market blank is filled, the food safety of a family is ensured from the source, and food waste is reduced.

The application discloses a preservative for inhibiting browning of fresh walnut kernels and an application method, relates to the technical field of food preservation, and is characterized in that the preservative is composed of a disinfectant, an antioxidant and a stabilizer according to a weight ratio of 1:(600-800):(8-12), wherein the disinfectant is a chlorine dioxide powder, the antioxidant is a tert-butyl hydroquinone powder, and the stabilizer is a mixture of sodium carbonate, sodium bicarbonate and citric acid. The preparation method comprises the following steps: mixing the components to prepare tablets or powders. When applied, the preservative is dissolved in water at a ratio of 1:5000 to 1:10000 to prepare a preservative solution, fresh walnut kernels are soaked in the preservative solution for 5-20 minutes, and then the fresh walnut kernels are drained and packaged. Through the synergistic effect of ClO2 and TBHQ, the two problems of microbial corruption and enzymatic browning of fresh walnut kernels are solved efficiently, the shelf life is significantly prolonged, the method is safe, simple, low in cost and suitable for industrial production.

Fumigation chamber (1) for products to be treated, comprising sealed walls (2) with a loading opening, a fumigation cycle control module (10), a sealed door (3), a heater (4), a system (5) for detecting and relieving any overpressure inside the chamber, and a degassing circuit (6) for expelling the fume gas from the chamber and replacing it with external air. FIGURE 1

The utility model relates to a fin connecting structure of an air temperature type vaporizer for grain storage, which comprises a plurality of vaporizing pipes, each vaporizing pipe is provided with a plurality of fins, each fin is provided with a connector, a connecting assembly is arranged between every two vaporizing pipes, and the connecting assembly comprises a connecting block, a connecting sliding groove, a connecting sliding block, a connecting arm and a connecting clamp. Adjusting sliding grooves are formed in the connecting sliding grooves, adjusting sliding rods are arranged on the connecting sliding block, a plurality of adjusting lock holes are formed in the adjusting sliding rods, a plurality of connecting lock grooves are formed in the connecting block, connecting lock rods are arranged in the connecting lock grooves in a sliding mode, and the length of the connecting lock rods is larger than that of the connecting lock grooves. The gasification pipes are fixedly connected through clamping connection between the connecting clamps and the connectors, sliding fit between the connecting sliding blocks and the connecting sliding grooves, sliding fit between the adjusting sliding rods and the adjusting sliding grooves and fit between the connecting locking rods and the adjusting locking holes in the adjusting sliding rods. The device is ingenious in structure, convenient and practical.

It sterilizes all granular materials evenly and completes the sterilization process in a short amount of time. [Solution] The sterilization device 10 comprises a tank 11 for containing granular material to be sterilized, and a gas supply device 12 for supplying chlorine dioxide gas to the inside of the tank 11 from below. The gas supply device 12 sterilizes the granular material inside the tank 11 while causing it to flow by blowing out chlorine dioxide gas.

The invention discloses a shell and kernel separating and sterilizing method for macadamia nuts. The method comprises the following steps: removing green peels on the outermost layers of nuts, and reserving the nuts with hard wooden shells; and then, carrying out vacuum-pumping sealing treatment on the fruit shells, treating the fruit shells in ultrahigh-pressure equipment for several minutes under the pressure condition of about 600 MPa, and after the pressure is released, enabling the surfaces of the fruit shells not to have obvious cracks but the adhesion between the fruit shells and the kernels to be reduced, and mechanically opening the fruit shells by pressing to obtain complete kernels. After the ultrahigh pressure action, the shell structure is subjected to microscopic loosening, the adhesion between shells and kernels is obviously reduced, the surface of the shell is not obviously cracked, efficient separation of complete kernels can be realized through mild mechanical pressing, meanwhile, a remarkable sterilization effect is achieved, and the shelf life of products is prolonged. The process disclosed by the invention does not need high temperature or chemical additives, is simple and convenient to operate, can maintain the natural flavor and nutritional quality of the nuts, and has green, safe and good industrial application prospects.

The invention relates to a granary circulation fumigation device and method, the granary circulation fumigation device comprises a granary and a gas circulation system, the granary is provided with a gas inlet, the gas inlet is used for introducing fumigation gas, the gas circulation system comprises a bottom gas pipe, a central gas pipe and a plurality of side vertical gas pipes, the bottom gas pipe is provided with a plurality of first gas vents, and the bottom gas pipe is communicated with the gas inlet; the bottom of the side vertical air pipe is communicated with the bottom air pipe, and the side vertical air pipe is provided with a second air port in the vertical direction; a third gas port is formed in the central gas pipe; the variable-speed circulating fan is configured to drive the fumigation gas to flow into the granary from the bottom gas pipe and the side vertical gas pipe and flow out of the granary from the central gas pipe, or to drive the fumigation gas to flow into the granary from the central gas pipe and flow out of the granary from the bottom gas pipe and the side vertical gas pipe; radial flowing is achieved, the flowing distance of fumigation gas in grains can be reduced while the whole granary fumigation can be covered, uneven heat distribution caused by long-distance flowing is avoided, and the fumigation effect is improved.

The application provides a preparation method of stir-fried gualouzi with improved storage quality based on a leaf extract of Bacopa monnieri, and relates to the field of food. The preparation method comprises the steps of steam pretreatment, microwave enzyme inactivation, composite antioxidant treatment, stir-frying, cooling and vacuum deoxygenation packaging. The application adopts a comprehensive preservation method, which comprises three means of steam-microwave enzyme inactivation, smearing of natural antioxidants and vacuum deoxygenation packaging, and establishes a multiple protection system from enzyme activity inhibition, oxidation reaction blocking to external oxygen isolation, thereby establishing a comprehensive quality protection measure for the stir-fried gualouzi product. Through the above three means, which are connected and supplemented to each other, the shelf life of the product is significantly prolonged on the basis of ensuring food safety, and the storage quality is effectively improved. The application breaks through the limitation of a single preservation method, provides an effective solution for prolonging the shelf life of stir-fried gualouzi and maintaining the flavor and nutritional value thereof, and has important popularization and application value.

An equipment and a method for ozone circulation fumigation in grain depot are provided. The equipment includes a grain storage cavity, an air intake unit, a circulation unit, and a fixed unit. The air intake unit is connected to the grain depot through a fixed unit, the circulation unit is located on the side of the grain depot away from the air intake unit, the circulation unit is connected to the air intake unit through a reflux pipe, the reflux pipe is equipped with an ozone concentration sensor, the transverse diffusion tube of the air intake unit is connected to the grain storage cavity, the grain storage cavity is equipped with a ventilation partition, there are several air vents on the ventilation partition, and a backflow channel is formed between the ventilation partition and the side wall of the grain depot.