43results about How to "Extend storage time" patented technology

The invention relates to an ultra-long-term freshness preserving system which can be applied to a refrigerator and installed in a refrigerating chamber of the refrigerator. The system comprises a freshness preserving box, an oxygen enriching membrane, a vacuum pump, a pressure sensor, a control plate and gas delivering pipes, wherein the oxygen enriching membrane is fixed in the freshness preserving box and connected with a gas sucking opening of the vacuum pump by the first gas delivering pipe penetrating through the wall of the freshness preserving box; an exhaust opening of the vacuum pump is led outside a box body for mounting the ultra-long-term freshness preserving system by the second gas delivering pipe; the pressure sensor is fixed to the first gas delivering pipe to sense the pressure in the freshness preserving box, and a signal line is connected with the control plate; and the control plate is connected with and controls the vacuum pump. The invention has ultrastrong freshness preserving function and can effectively improve the storing time of food stored in the refrigerator by being applied to the refrigerator; compared with the refrigeration of a common refrigerator, the invention is expected to be improved by 2-3 times. In addition, the invention can provide high-concentration oxygen for a room, has a plurality of advantages and practical values, and greatly improves the practicability and the healthy performance of the refrigerator.

The invention discloses a multilayer film dry chemical reagent tablet for detecting alanine aminotransferase, which comprises a lower support layer; a test hole is disposed at one end of the lower support layer; the lower support layer is coated with a multilayer film; the multilayer film comprises an euphotic layer, a reagent layer, an auxiliary layer and a diffusion layer which are orderly superimposed from up to down; one side of the euphotic layer of the multilayer film is bonded and fixed at the test hole of the lower support layer. The multilayer film dry tablet for detecting alanine aminotransferase of the invention can rapidly and accurately detect alanine aminotransferase in serum and blood plasma, and can increase the preservation time of the dry tablet.

The invention relates to a fish ball product production device and process. The fish ball product production device comprises a fish ball forming machine. A conveying mechanism of the fish ball forming machine conveys formed raw fish ball products into a low-temperature boiling machine. A conveying mechanism of the low-temperature boiling machine conveys the fish ball products obtained after low-temperature boiling is conducted into a high-temperature boiling machine. A conveying mechanism of the high-temperature boiling machine conveys the fish ball products obtained after high-temperature boiling is conducted to a high-temperature cooking machine. The high-temperature cooking machine conveys the fish ball products obtained after high-temperature cooking is conducted into a cooling machine through a first elevator. The cooling machine conveys the cooled fish ball products into an instant freezer through a second elevator. The fish ball product production device is novel in structural design, reasonable in process design and high in production efficiency, energy is saved, emission is reduced, the formed fish ball products are even and attractive in form, and the appearance and taste of the products are guaranteed.

The invention discloses a refrigerator, which comprises a refrigerator body, a door body of a freezing chamber, the door body of a refrigerating chamber, an ice maker and a refrigeration system, wherein the freezing chamber and the refrigerating chamber are formed in the refrigerator body; the refrigerating chamber is positioned above the freezing chamber; an ice-making chamber is arranged on an internal wall of the door body of the refrigerating chamber; an ice-taking groove which is connected with the ice-making chamber is arranged on an external surface of the door body of the refrigerating chamber; the ice maker is arranged in the ice-making chamber; the refrigeration system comprises a compressor, a condenser, a first evaporator, a second evaporator, a third evaporator and an electric switching valve; the compressor and the condenser are arranged in a compressor cabin which is positioned on the lower part of the rear side of the refrigerator body; the first evaporator is arranged in the freezing chamber and refrigerates the freezing chamber; the second evaporator is arranged in the refrigerating chamber and refrigerates the refrigerating chamber; the third evaporator is arranged in the ice-making chamber and refrigerates the ice-making chamber; the electric switching valve is connected with the first evaporator, the second evaporator and the third evaporator; and the first evaporator, the second evaporator and the third evaporator adopt a bypass control mode. The refrigerator provided by the embodiment of the invention has the advantages of good moisturizing effect, convenience for use, high refrigerating efficiency and low energy consumption.

The invention provides a maize seed storing method, and relates to the technical field of storage of plant seeds. The method comprises the following steps: naturally drying; primarily screening; treating with carbon dioxide; sterilizing and disinfesting; secondarily screening; manually drying; treating a warehouse; storing; performing the storing management. The method is simple and convenient to operate; the seed storage time can be effectively prolonged on the premise that the seed storage quality is ensured, so that the overall quality of seeds can be improved, and the seed germination rate can be ensured; meanwhile, the maize seed storing cost can be greatly reduced; in addition, ventilation treatment for the seeds at special time is avoided, and thus the cost can be greatly reduced.

The invention discloses a refrigerator. The refrigerator comprises a body, freezing chamber door bodies, refrigerating chamber door bodies, an ice maker and a refrigerating system, wherein a freezing chamber and a refrigerating chamber arranged above the freezing chamber are formed in the body; an ice making chamber is arranged on the inner wall of one refrigerating chamber door body and an ice getting groove connected with the ice making chamber is arranged on the outer surface of the refrigerating chamber door body; the ice maker is arranged in the ice making chamber; the refrigerating system comprises a compressor, a condenser, a first evaporator, a second evaporator, a third evaporator and an electric changeover valve; the compressor and the condenser are arranged in a compressor cabin arranged on the lower part of the rear side of the body; the first evaporator is arranged in the freezing chamber and is used for refrigerating the freezing chamber; the second evaporator is arranged in the refrigerating chamber and is used for refrigerating the refrigerating chamber; the third evaporator is arranged in the ice making chamber and is used for refrigerating the ice making chamber;the electric changeover valve is connected with the three evaporators; and the three evaporators adopt the bypass type control mode. The refrigerator disclosed by the embodiment of the invention has the advantages of good moisturizing effect, convenience in use, high refrigerating efficiency and low energy consumption.

The invention discloses a waterproof gouache pigment composition and a preparation method. The waterproof gouache pigment composition comprises pigments, aluminum stearate, sodium rosinate, epoxy resin, sodium dodecyl sulfate, polystyrene diol, sodium alkyl naphthalene sulfonate, styrene-acrylic emulsion, organic silicon, sodium benzoate, polyacrylamide dimethyl silicone oil, cellulose phthalate acid ester, tert-carboxylic acid and tetrafluoroethylene oil. Compared with the prior art, the composition is prepared by the aid of various chemical components and particularly has waterproof and moisture-proof effects, fading of a gouache is prevented, preservation time of the gouache is prolonged, and the composition has popularization and application values.

The storing process of date as date juice material includes sorting and cleaning, high temperature sterilizing, packing and freezing, and features that cleaned date is sterilized at 85-100 deg.c for 10-25 min, sealed in plastic bag and maintained in cold storage warehouse at the temperature of -2 to -5 deg.c. The said technological scheme makes it possible for to prolong the date preserving period to over 12 months with less nutrients loss and the preserved date may be used in producing date juice beverage with the taste and nutrients similar to that of fresh date.

The invention relates to a method for extraction of Cornus walteri seed oil by combination of superhigh pressure treatment and subcritical double solvent extraction. The method comprises 1, crushing Cornus walteri seeds, drying the crushed Cornus walteri seeds and carrying out pretreatment at a temperature of 30-40 DEG C under pressure of 300-350 MPa, 2, carrying out extraction on the Cornus walteri seeds pretreated by the step 1 in a subcritical fluid at a temperature of 120-180 DEG C under pressure of 3-7MPa to obtain extract, and 3, carrying out cooling and demulsification on the extract obtained by the step 2, carrying out standing layering, and taking a liquid in the upper layer, wherein the liquid in the upper layer is Cornus walteri seed oil. The superhigh pressure pretreatment is carried out prior to the subcritical fluid extraction and is carried out at a temperature of 30-40 DEG C under pressure of 300-350MPa for 10-15min so that lipoxidase and polyphenol oxidase in Cornus walteri seeds are passivated and even loses activity, microbes on Cornus walteri seeds are killed and a color, a fragrance, a taste, nutrients such as vitamins and local flavor substances of the food are not influenced and a recovery rate is obviously improved.

The invention discloses a conveying device for raw materials for graphene production. The conveying device for the raw materials for the graphene production comprises a base and a box body. Universalwheels are installed at the bottom of the base. The box body is fixed to the top end of the base. An air pump is installed on the inner wall of the box body. A fixed pad is fixed to the middle of thebox body. A vessel is connected to the top end of the fixed pad in a clamped mode. A compressor is installed on one side of the box body. An upper cover is connected with the top end of the box body through a hinge. An air pressure adjusting device is installed at the top end of the upper cover. The air pressure adjusting device comprises a rotary knob, a piston, a connecting rod, a shell and an air leakage hole. The shell is fixed at the top of the upper cover. The air leakage hole is formed in one side of the shell, and the piston is connected to the inner wall of the shell. The connecting rod is fixed to the middle of the piston. The rotary knob is fixed to the end, located at the outer side of the shell, of the connecting rod. According to the conveying device for the raw materials forthe graphene production, the dryness and air tightness of the box body are ensured, air in the box body is reduced, the storage time of graphite oxide is prolonged, the damage of the vessel in the conveying process is prevented, and the quality of the graphite oxide in the vessel is eneured.

The invention relates to a clitopilus prunulus preserving method. The process includes the steps that clitopilus prunulus mycelia and a sodium alginate solution are mixed, the mixed solution is dripped into a calcium chloride solution to prepare small balls, and finally the small balls are put into pure water and preserved at the temperature of 0-4 DEG C. The clitopilus prunulus preserving method can greatly prolong the clitopilus prunulus preserving time while ensuring strain survival and has a positive acceleration effect on pleuromutilin and derivatives thereof.

The invention discloses a dandelion tea processing method capable of increasing the caffeic acid content, and belongs to the technical field of processing of dandelion tea. The processing of the dandelion tea is realized through six steps of picking fresh leaves, performing maceration, performing microwave steam fixation, performing gradient temperature reduction and drying, performing alternativetwisting, and performing fermentation and shaping. According to the dandelion tea processing method disclosed by the invention, microwave steam fixation treatment, gradient temperature reduction anddrying treatment and alternate rolling treatment are adopted, so that effective components in the tea leaves can be extracted to the maximum extent, the effective components of the tea leaves are guaranteed not to be destroyed, and the preservation time of tea leaf finished products can be prolonged. Dandelion tea processed by the processing method disclosed by the invention is yellowish in color,harmonious and rich in smell, cool, refreshing and delicious, moderate in sour and sweet degree, clear and transparent, has peculiar taste of dandelions and green tea, and meets requirements of vastconsumers. In the dandelion tea processed by the processing method disclosed by the invention, the caffeic acid content is 0.478-0.486mg/g, the caffeic acid recovery rate is 97.2-98.1%, and the processing benefits are significant.

The present invention provides a portable multi-function cardiology detector, which includes buckles, a storage bag structure, a case cover, a charging port, a monitoring interface, a communication interface, a refrigeration device, an operation panel, a handle, a clasp, a power switch, an outlet paper opening, printer main body, paper box, box body, box cover hinge, battery and controller, the snap bolts are installed in the middle of the upper side of the box cover; the placement bag structure is arranged on the seam The middle position inside the box cover; the box cover is installed on the upper part of the box body through the box cover hinge. The arrangement of the refrigerating device of the present invention is beneficial to the refrigerating of medicines and collected blood, and prolongs the storage time; the arrangement of the placement bag structure is conducive to the placement of transmission lines for monitoring and common tools; The airtightness between the refrigerating cabinets makes the refrigerating device have a better refrigerating effect, is more convenient to use, and is convenient for popularization and use.

The invention discloses a storage device for aquatic product fodder. The storage device comprises a shell. Support plates are installed at both the two ends of the bottom of the shell. Air heaters areinstalled on the side edges of the support plates. Air outlets of the air heaters communicate with first air pipes. Adjusting valves are installed on the pipe sections of the first air pipes. The ends, away from the air heaters, of the first air pipes are inserted into the shell from the bottom of the shell. The side edges of the first air pipes communicate with a plurality of second air pipes. The ends, away from the first air pipes, of the second air pipes communicate with nozzles. A motor is installed at the top of the shell. An output shaft of the motor downwards penetrates through the shell and is connected with a rotary shaft. Stirring rods arranged at equal intervals are fixed to the side edge of the rotary shaft in the length direction of the rotary shaft. The top of the shell communicates with a humidity elimination pipe. A solenoid valve is installed on the pipe section of the humidity elimination pipe. A humidity sensor is installed on the inner wall of the humidity elimination pipe. According to the storage device, storage time of the fodder is prolonged greatly, very good economy is achieved, and meanwhile the storage device is simple in structure and convenient to operate.

The inventive process relates to making flour confectionery products, namely, puff pastry, and comprises: preparation of dough with certain humidity by mixing flour, water, citric acid, and egg products, maturing the dough for swelling of gluten, forming the dough by rolling it out in several stages, applying at the last stage a cover layer with filler having thickness not exceeding 2 mm, sandwiching the dough with soft-fat component, multiple rolling and cooling the dough in several stages, forming dough pieces, covering each piece with the cover layer, baking the dough at a temperature of 240° C., the humidity of the dough is maintained within the range of 22-27%. The filler may have different bases: grated cheese, salt, spices, mushrooms, nuts, invert liquid sugar with spices or dried fruits or poppy-seeds or sesame, or combinations thereof. The resultant products have high organoleptic qualities and preserve their consumer qualities within a long time period.

The invention relates to the field of beverages and particularly relates to a method for baking medlars by carbon. The method comprises the following steps: respectively preparing chrysanthemum water, honey water and oak water; adding the prepared chrysanthemum water, honey water and oak water into rock candy water to be mixed uniformly; boiling to prepare a mixed nutrition solution; putting aired fresh medlars into an oak bucket and spraying the mixed nutrition solution; agitating uniformly; and taking out and frying. According to the method for baking the medlars by the carbon, the mixed nutrition solution prepared from the chrysanthemum water, the honey water and the oak water is used for spraying the medlars; the combining effect of the chrysanthemum water and the honey water can reduce the heat of the medlars; after drinking medlar water, people do not easily get heat. Meanwhile, the oak water can adsorb the astringent of the medlars so that the brewed medlar water has the faint scent of fruit trees. Meanwhile, the medlars are fried so that the sealing time of the medlars can be prolonged.

The invention discloses an art pigment preparation method, which comprises the processing steps of dissolving, heating, stirring, filtering and the like raw materials to obtain a finished product which comprises 2-4 parts of a dispersing agent, 0.5-0.8 part of a preservative, 5-8 parts of a coloring agent, 1-3 parts of a wetting agent, 0.3-0.5 part of a filling agent, 0.6-0.8 part of a cementing agent, 0.5-1 part of a stabilizer, 20-30 parts of purified water, 3-5 parts of an aromatic agent and 2-4 parts of a precipitant. According to the preparation method of the art pigment, the overall goodmixing effect is guaranteed, overall good coloring is facilitated, the overall coloring effect is improved, the overall dispersion effect after use is improved, the overall good coloring effect is guaranteed, meanwhile, overall storage and use are facilitated, the lavender essential oil is added into the whole body, the overall fragrance is increased, the overall forming effect is improved, and then the overall practicability is improved.

The invention provides a preparation method of a boar semen diluent, and relates to the field of livestock breeding. The boar semen diluent is prepared from the following components in parts by weight: 30-40 parts of nutrients, 15-25 parts of a buffer solution, 1-3 parts of potassium chloride, 1-2 parts of ethylene diamine tetraacetic acid, 1-3 parts of a protective agent, 0.1-0.3 part of vitaminE, 2-5 parts of enrofloxacin, 0.5-0.8 part of amphotericin B and 1000-1400 parts of a solution, wherein the nutrient is one of glucose, fructose, lactose and mannose, preferably glucose, the buffer solution is a mixture of sodium dihydrogen phosphate and disodium hydrogen phosphate, the ratio of sodium dihydrogen phosphate to disodium hydrogen phosphate is 1: 1, the protective agent is a mixture of bovine serum albumin and glycerin, and the ratio of bovine serum albumin to glycerin is 1: (3-4). Through reasonable material selection and preparation mode, a same proper preservation environment can be provided for boar semen, so that the diluent can greatly prolong the preservation time of boar semen, and the later insemination operation is facilitated.

The invention belongs to the technical field of low-temperature storage of bananas and discloses an in-vitro banana stem tip ultralow-temperature storage method comprising the steps: pre-culturing a banana seedling with the height of 3.0-6.0 cm in a culture medium containing 0.4 mol/L of sucrose for 2 d; stripping off a stem tip with 1-2 leaf primordia under the condition of room temperature; loading the stem tip in a loading liquid, then, treating the stem tip by using a vitrification solution, and preparing droplets on an aluminum foil strip; storing the stem tip in liquid nitrogen for at least 1 h, defrosting and washing the stem tip by using 1.2 mol/L of sucrose culture solution, wherein the stem tip is washed for 10 min every time; and transferring the treated stem tip to an MS culture medium containing 0.3 mol/L of sucrose, culturing the stem tip in a dark room for 2 d, then, transferring the stem tip into an MS culture medium containing 0.5 mg/L of 6-BA, culturing the stem tip for 30-35 d, inoculating seed sources recovered to normally grow into a novel recovery growth culture medium for multiplication and rapid propagation to obtain cluster buds, and carrying out culture ina rooting culture medium. Due to the long-term storage in liquid nitrogen, an effective approach is provided for the safety storage of banana germplasm.

The invention relates to an intelligent rainwater collector which comprises a cabinet body, an ultraviolet disinfection device, a controller, a detection device, a filtering device and a water tank, wherein rainwater falls into the water tank after being filtered by the filtering device; the ultraviolet disinfection device is fixedly arranged outside the cabinet body; both the controller and the water tank are arranged inside the cabinet body; the controller is positioned outside the water tank; the detection device is positioned inside the water tank; and both the detection device and the ultraviolet disinfection device are electrically connected with the controller. The intelligent rainwater collector achieves the effects of circularly disinfecting and sterilizing the rainwater in the water tank, prolonging the storage time of the rainwater, ensuring the quality of the rainwater and avoiding odor generation of the rainwater.

The invention discloses an oxygen-poor nitrogen sealing method matched with a styrene storage tank. The oxygen-poor nitrogen sealing method comprises the following steps: respectively feeding nitrogenand air into a pipeline type static gas mixer and fully mixing the nitrogen with the air into oxygen-poor nitrogen; feeding the oxygen-poor nitrogen into a self-operated gas pressure reducing valve to be subjected to pressure reduction to micro pressure and then feeding the oxygen-poor nitrogen into the styrene storage tank; and when the styrene storage tank is in a discharging state, feeding theoxygen-poor nitrogen into the styrene storage tank through the self-operated gas pressure reducing valve, detecting the pressure in the tank through a pressure detection pipe, and when the pressure in the tank reaches the micro pressure, stopping supplementing gas to the styrene storage tank by the self-operated gas pressure reducing valve. According to the oxygen-poor nitrogen sealing method, the problem that styrene is prone to polymerization in a storage process, and then a product goes bad is effectively solved, a certain amount of oxygen is fed into a polymerization inhibitor, so that the activity of the polymerization inhibitor is guaranteed, the storage time of the styrene is effectively prolonged, meanwhile, escape of styrene gas is reduced, and the environmental safety of a workshop and the personal safety of workers are guaranteed.

The invention relates to a salt-flavored green soy bean processing technology and cleaning equipment, and solves the defects that salt-flavored green soy beans lose the protection of pods and the salt-flavored green soy beans are difficult to store for a long time due to the fact that two tips of the pods are sheared off in the process of preparing the green soy beans into the salt-flavored greensoy beans. The processing technology comprises the steps of S1, performing raw material primary selection, wherein green soy beans are conveyed by a conveying belt to be preliminarily screened througha vibrating screen; S2, performing cleaning: cleaning the primarily selected green soy beans to remove soil; S3, performing cooking and de-enzyme processing: conveying the cleaned green soy beans into a cooking pot, adding salt water, and performing cooking at the cooking temperature of 98-100 DEG C for 55-60 seconds; S4, performing cooling and soaking: conveying the cooked green soy beans into acooling pool for cooling; S5, performing secondary screening: draining the cooled and soaked green soy bean materials and sorting the green soy bean materials through a color sorter; and S6, performing quick-freezing and packaging: quickly freezing the secondarily screened green soy beans, and then performing vacuum-pumping and packaging so as to obtain the quick-frozen salt-flavored green soy beans. The method has the effect of prolonging the storage time of the salted green soy beans.

The embodiment of the invention discloses a memory and a neuromorphic chip. The memory comprises a nonvolatile memory unit and a refresh circuit which are connected with each other; the refreshing circuit is used for reading the storage data in the nonvolatile storage unit and writing the storage data back to the nonvolatile storage unit. Under the condition that the area of the nonvolatile storage unit is fixed, the storage device increases the storage duration of the storage data in the nonvolatile storage unit, and the technical effect of flexibly adjusting the storage duration of the datais achieved.

The invention relates to the field of preparation of traditional Chinese medicine materials, and provides traditional Chinese medicine decoction pieces and a preparation method thereof. The preparation process of the traditional Chinese medicine decoction pieces comprises the steps that traditional Chinese medicine raw materials are processed and dried to obtain a pharmaceutical intermediate product, the pharmaceutical intermediate product is sterilized and then packaged. The traditional Chinese medicine decoction pieces are prepared by adopting the preparation process of the traditional Chinese medicine decoction pieces. The traditional Chinese medicine decoction pieces and the preparation method thereof have the advantages that the pharmaceutical intermediate product is sterilized afterdrying and before packaging, and bacteria and fungi in the traditional Chinese medicine decoction pieces can be killed, thereby prolonging the preservation time of the traditional Chinese medicine decoction pieces and improving the preservation quality of the traditional Chinese medicine decoction pieces, so that the traditional Chinese medicine decoction pieces do not rot and mildew easily, and the product quality is good.

The invention provides a blueberry preservative and preparation and application thereof, and belongs to the field of preservative preparation. The preservative comprises the following components in parts by weight: 9.9-10.01 parts of ferrous chloride, 2.92-8.08 parts of ferrous sulfate, 14.85-15.15 parts of sodium bicarbonate, 2.92-8.08 parts of potassium permanganate, 2.97-3.03 parts of ascorbicacid, 2.48-2.53 parts of sodium hypochlorite, 1.29-1.31 parts of anhydrous ferric chloride, 1.98-2.02 parts of zinc oxide, 0.198-0.202 part of sodium polyacrylate and 44.55-45.45 parts of zeolite. Bythe preservative provided by the invention, the storage time of various blueberries can be effectively prolonged under the low-temperature and normal-temperature storage conditions, the loss of goodsis reduced, and the economic benefit is increased.

The invention relates to the technical field of biological products. More specifically, the invention relates to clostridium butyricum freeze-dried powder as well as a preparation method and application thereof. The spore rate of the clostridium butyricum freeze-dried powder is greater than 90%, and the viable count in the freeze-dried powder is 2.0*10<10> cfu/g to 3.0*10<10> cfu/g. The clostridium butyricum freeze-dried powder provided by the invention is relatively strong in freezing resistance, the viable count in the freeze-dried powder is greater than 2.0*10<10> cfu/g, the spore rate is greater than 90%, the preservation time of the clostridium butyricum freeze-dried powder is prolonged, and later product processing, storage and transportation are facilitated.

The invention relates to a plant extract additive for livestock and poultry breeding. The plant extract additive consists of the following components in parts by weight: 30-50 parts of eucmmia leaf extract, 20-40 parts of garlic extract and 10-30 parts of citric acid. According to the plant extract additive, by adding the citric acid into feed, not only can the storage time of the feed be extended, but also the proliferation of pathogens can be reduced and toxic metabolic products can be inhibited; and by adding allicin, energy generation can be promoted, and the antibacterial ability and theanti-virus capability are enhanced.

The invention discloses a marine low-temperature self-cleaning urea cabin. The urea cabin comprises a storage cabin, a circulating water pipe, an expansion tank, a dosing device, a cooling water pump,a heat exchanger, a cooling component and a cleaning component, the circulating water pipe penetrates through the storage cabin, the expansion tank is arranged outside the storage cabin, the expansion tank is communicated with the storage cabin through the circulating water pipe, the dosing device is arranged outside the expansion tank, one end of the dosing device is communicated with the storage cabin through the circulating water pipe, the cooling water pump is arranged outside the dosing device, the storage cabin and the expansion tank are communicated with one end of the cooling water pump through the circulating water pipe, the other end of the cooling water pump is communicated with the dosing device, the heat exchanger is arranged outside the cooling water pump, one end of the heat exchanger is communicated with the storage cabin through the circulating water pipe, and the other end of the heat exchanger is communicated with the dosing device. The urea cabin is convenient to maintain and good in low-temperature and constant-temperature effects.

The invention discloses food detecting and sampling equipment, belonging to the technical field of food detecting and sampling. The invention aims to solve the problems that existing food detecting and sampling equipment is single in structure, only has sampling and storing functions, needs to be immediately sent to an inspection room after sampling is completed, and is strict in time requirement.According to the invention, a handle is mounted on one side of a sampling equipment main body; an anti-skid rubber sleeve is mounted on the outer wall of the handle; a refrigerating mechanism is mounted on the other side of the sampling equipment main body; an air suction cavity is mounted at the lower end of the sampling equipment main body; a micro air pump is mounted at the lower end of the air suction cavity; an exhaust port is formed in the front end surface of the micro air pump; a plug is installed on the exhaust port; an air inlet is formed in one side of the exhaust port; and a guidepipe is installed at one end of the air inlet.

The invention discloses a storage method of acetoin. The storage method comprises the following steps: (1) obtaining acetoin containing acetic acid; (2) enabling the acetoin monomer containing aceticacid to pass through an adsorption exchange bed layer filled with a calcium ion exchange molecular sieve to obtain an acetoin monomer B; and (3) sealing and storing the acetoin monomer B. The method can effectively reduce acetoin decomposition and prolong acetoin storage time.