31results about How to "Inhibit aerobic respiration" patented technology

The invention discloses a fence preservation method for prolonging shelf life of cold fresh poultry. The fence preservation method for prolonging the shelf life of the cold fresh poultry comprises the following steps of: placing fresh poultry which is obtained by slaughtering, washed completely and cut into a refrigeration storage at the temperature of between 2 and 5 DEG C and precooling the poultry for 1 to 2 hours, so that the surface temperature of the poultry is reduced below 5 DEG C and the internal temperature of the poultry is reduced below 10 DEG C; transferring the precooled poultry to a purification room and performing surface sterilization on the poultry through ozone or ozone solution of an ozone generator; immersing the poultry subjected to ozone sterilization into chitosan glutamate solution to retain freshness; taking out and draining the poultry; placing the poultry after corrosion prevention and freshness preservation into a food plastic packaging box; introducing carbon dioxide (CO2) and nitrogen (N2) into the food plastic packaging box and performing sealing package; and storing the packaged poultry into a cold chain at the temperature of between 2 and 5 DEG C. The fence preservation method for prolonging the shelf life of the cold fresh poultry has good effect and is suitable for retaining freshness of the fresh cut poultry.

The invention relates to a storing and fresh preserving method spinach, pertaining to the technical field of vegetable storage and fresh preservation. The method comprises the steps of: (1) harvesting the spinach that accords with the harvesting standard in time; (2) rapidly pre-cooling the spinach at the temperature of 4 to 7 DEG C; (3) dividing and packing the spinach into special freshness preservation packages and then tying package mouths tightly and putting into a refrigeratory at the temperature of minus 1 to 2 DEG C and with the humidity of 90 to 98 percent for 2 to 3 hours, then untying the package mouths; inserting empty tubes with the inside diameter of 30mm into the packages; tying the package mouths again for maintaining ventilation degree of the package mouths and automatically regulating the gas environment in the packages with 5 to 8 percent of CO2 and 8 to 12 percent of O2; (4) taking 5 to 7 days as a circle to proceed with the management of opening the package mouths for ventilation for 2 to 3 hours and inserting the empty tubes and tying the package mouths again until the storing is finished. The method of the invention has low cost, good storing effect and is simple and convenient for operation, and the spinach can still maintain good marketability after 25 days. The method can be widely introduced to vegetable growers, dealers or processing enterprises.

The invention discloses a preparation method of a chitosan composite preservative film. The preparation method comprises the following steps: dissolving chitosan in an acetic acid solution, heating to 50 to 65DEG C, and stirring until the chitosan is completely dissolved, so as to obtain a solution A; dispersing modified nano carbon crystal in the solution A, wherein the adding amount of the modified nano carbon crystal is 1 to 9 percent; then adding a plasticizer which accounts for 0.2 to 1 percent of the volume of the solution A, and carrying out stirring, ultrasonic dispersion, standing and ultrasonic degassing for 10 to 15 minutes to obtain a solution B; casting the solution B to form a film, standing and drying at the drying temperature of 35 to 55DEG C; then putting into 0.01 to 0.02mol / L of NaOH solution, soaking for 0.5 to 1 hour, flushing with distilled water, uncovering the film and drying in the sun to obtain the composite preservative film. The chitosan composite preservative film disclosed by the invention has relatively low water vapor permeability, so that excessive loss of water in fruits and vegetables is avoided; the chitosan composite preservative film has relatively good sterilizing function and strong antibacterial durability, i.e., an obvious sterilizing effect can be realized within one hour, and the antibacterial rates for escherichia coli and staphylococcus aureus after 48 hours still can reach 90 percent or above, so the preservation time of the fruits and the vegetables is prolonged.

The invention pertains to the bio-engineering technical field, disclosing a fermentation method of alcohol with high concentration. The invention overcomes the shortages of low fermentation efficiency and long fermentation time, etc., of the existing alcohol fermentation technique. The invention adopts the steps that: bacteria-free air is introduced at the first stage; after 8 to 30 hours fermentation, material and fermentation agent are added under the temperature of 25 to 35 DEG C, oscillated or stirred with a rotation speed of 10-500r / min for 50 to 66 hours; the high concentration alcohol is made, and the volume concentration of the alcohol in the fermentation liquid is up to 16 to 18 percent. The invention can fast and effectively produce the high concentration alcohol.

The invention provides an antibacterial fresh-keeping agent for keeping vegetables fresh. The fresh-keeping agent is prepared from the following raw materials in parts by weight: 12 to 16 parts of a shaddock peel fermentation solution, 0.5 to 1 part of sodium diacetate, 0.4 to 0.7 part of glycerol and 7 to 12 parts of a plant extracting solution, wherein the plant extracting solution is prepared by mixing cortex eucommiae, herba lysimachiae, flos chrysanthemi indici, herba houttuyniae and herba seu radix cirsii japonici according to the weight ratio of (1 to 1.5) to (2 to 3) to (0.5 to 1) to (1 to 3) to (1 to 2) and extracting. The compound vegetable antibacterial fresh-keeping agent, which takes natural plant components as the raw materials, has the advantages of natural components, no toxicity and relatively good insect-repelling, bacterium-inhibiting and fresh-keeping effects; the compound vegetable antibacterial fresh-keeping agent can be used for effectively prolonging the fresh-keeping, storage and shelf life of the vegetables and the healthy safety is high.

The invention discloses a construction of a storage and transportation box for fresh stems and leaves of Talinum crassifoliums. The storage and transportation box comprises a box body; supporting columns are arranged at the bottom end of the box body; the two sides of the box body are provided with first lugs respectively, second lugs are arranged on the side faces of the box body above the side parts of the first lugs, and connecting holes are formed in the first lugs and the second lugs; a bottom plate is arranged at the bottom end of an inner cavity of the box body, bosses are arranged on the inner wall of the box body above the bottom plate, and a transverse partition plate is connected to the surfaces of the bosses; the top end of the box body is connected with a box cover; longitudinal partition plates are connected between the bottom plate and the transverse partition plate and between the transverse partition plate and the box cover; and the box body is rectangular, and the box body is composed of a non-toxic and hard opaque plastic. The storage and transportation box has the advantages that specification is uniform, mechanical operation is convenient, and the storage and transportation box is suitable for mechanical storage and transportation of the fresh stems and leaves of the Talinum crassifoliums, is also suitable for storage and transportation of other plant products such as fresh vegetables, medicinal materials and fruits, and has wide application prospects.

The invention discloses a photocatalytic fresh-keeping coating and super-fresh paper coated with the same, and the photocatalytic fresh-keeping coating comprises the following components in parts by weight: 0.01-10 parts of photocatalytic nano titanium dioxide particles with coating layers on the surfaces, 0.001-0.2 part of a slow-release ethylene inhibitor and 0.001-10 parts of a binder, whereinthe coating layer is hydroxyapatite, montmorillonite or silicon dioxide, the slow-release ethylene inhibitor is a microcapsule ethylene inhibitor, and the binder is one or a combination of more of acrylic resin, polyurethane resin and organic silicon resin. The super-fresh paper comprises a paper body layer, a photocatalytic functional layer loaded with photocatalytic particles and an ethylene inhibitor is arranged on the surface of at least one side of the paper body layer, so that packaged fruits and vegetables can be well preserved in the transportation process.

The invention relates to a bacterium-resistant film coating agent for fresh keeping of tangerine fruits. The film coating agent consists of the following raw materials in parts by weight of 10-15 parts of pomelo peel fermentation liquor, 0.6-0.9 part of potassium sorbate, 0.3-0.5 part of di-n-octyl phthalate, 3-5 parts of gum, 1-2 parts of shellac, and 7-12 parts of a plant extracting solution, wherein the plant extracting solution is prepared by mixing Indian strawberry, herba lysimachiae, japanese thistle herb or roots and fructus forsythiae in the compounding ratio of the Indian strawberryto the herba lysimachiae to the Japanese thistle herb or roots to the fructus forsythiae being (0.5-1) to (2-3) to (1-3) to 2 and performing extraction. The compound bacterium-resistant film coating agent for fresh keeping of tangerine fruits, which mainly adopts natural plant components as main materials, is natural in components and free from toxins, has good effects of expelling parasite, restraining bacteria, keeping fresh and polishing, can effectively prolong the fresh keeping period, the storage period and the shelf life of the tangerine fruits, and is high in health and safety properties.

The invention discloses a gas concentration regulation and control method of a refrigerator and the fresh-keeping refrigerator. The method comprises the steps of when a drawer is in a closed state, monitoring the concentration of carbon dioxide in the drawer; and according to the interval where the concentration of the carbon dioxide is located, executing a corresponding adjustment strategy so that the gear of a vacuum pump in a nitrogen-oxygen separation membrane assembly and the gear of a controlled atmosphere membrane in an adjustable controlled atmosphere membrane assembly are adjusted, wherein the initial gear of the vacuum pump and the initial gear of the controlled atmosphere membrane are both middle gears. According to the gas concentration regulation and control method of the refrigerator and the fresh-keeping refrigerator, linkage control over the controlled atmosphere membrane and the nitrogen-oxygen separation membrane assembly can be achieved according to the concentration of the carbon dioxide in the drawer, and whether the rotating speed of the vacuum pump and the effective use area of the controlled atmosphere membrane need to be adjusted or not can be judged according to the concentration of the carbon dioxide in the drawer; it is ensured that the concentration of the carbon dioxide in the drawer is proper while the concentration of oxygen in the drawer is reduced; and aerobic respiration of fruits and vegetables can be effectively inhibited, and damage caused by anaerobic respiration of the fruits and vegetables is avoided.

The invention relates to the field of seed storage and discloses a crop seed storage agent and a storage method. The storage agent is prepared from at least two kinds of calcium oxide, calcium chloride and super absorbent resin. The storage agent is applied to seed storage, the vitality can be kept well, and the germination rate is 90% or above when seeds are storage for 2 years or longer. The crop seed storage method is simple in process and low in cost.

The invention discloses a seed storage device based on biological respiration reaction. The seed storage device comprises a storage cabinet, wherein a plurality of placement discs distributed in an array are inserted into the inner side wall of the storage cabinet; the side wall of the storage cabinet is fixedly connected with a plurality of sealing boxes distributed in an array; a square cavity is formed in a sealing region; a plurality of placement holes distributed in an array are formed in the side wall of the top end of each placement disc; the placement holes are filled with cotton threads; the inner side wall of the square cavity is fixedly connected with water absorption cotton; one end of each cotton thread penetrates through the side wall of the storage cabinet; and the side wall of the water absorption cotton is fixedly connected with the other end of each cotton thread. The invention relates to the technical field of biological breeding; the water absorption cotton is used for reducing the moisture in the storage cabinet; the corrosion reaction of iron blocks is used for reducing oxygen in the storage cabinet; the aerobic respiration of seeds is inhibited; and subsequent generation of heat and moisture is avoided.

The invention discloses new energy environment-friendly liquid fertilizer. Traditional fertilizer is improved by increasing soil fertility or fully absorbing the fertilizer, and therefore soil and environment can be damaged to a certain extent by using too much chemical fertilizer of this type relative to environmental protection. The new energy environment-friendly liquid fertilizer comprises, by mass, 16.0 percent-25.0 percent of seaweed, 4.3 percent-7.0 percent of xanthan gum, 0.6 percent-2.0 percent of taro grinding powder, 1.5 percent-2.5 percent of activated carbon, 1.0 percent-2.0 percent of complexing agents, 7.0 percent-12.0 percent of yeast sugar and 60.0 percent-70.0 percent of water. The new energy environment-friendly liquid fertilizer has the advantages that the yield of plants can be improved, pollution to soil is reduced, plant products are organic and natural, edibility is good, meanwhile, residual pesticides in the plants and the use amount of the fertilizer are reduced, and residual harmful mineral substances are reduced.

The invention discloses a collybia albuminosa refreshing compound and a refreshing storage method thereof and belongs to the technical field of wild mushroom. The compound components include: 0.1-0.2% of KCl, 0.2-0.5% of NaCl, 0.05-0.1% of gypsum, 0.1-0.5% of vitamin C and the balance of distilled water. The refreshing storage steps include picking, sorting, soaking, bagging and storing. According to the invention, a low-oxygen high-carbon dioxide low-temperature gas environment is created in the manner of adjusting the ratio of O2 to CO2 after the collybia albuminosa is soaked in a preservation solution for 30min, the aerobic respiration of the collybia albuminosa is extremely restrained and the toxic effects of anaerobic respiration and carbon dioxide are not caused; the refreshing storage period of the fresh collybia albuminosa is prolonged for 15-20 days according to the invention; the operation is simple and convenient; the taste, appearance and nutritional ingredients of collybia albuminosa are all free from obvious change.

The invention discloses a collybia albuminosa refreshing compound and a refreshing storage method thereof and belongs to the technical field of wild mushroom. The compound components include: 0.1-0.2% of KCl, 0.2-0.5% of NaCl, 0.05-0.1% of gypsum, 0.1-0.5% of vitamin C and the balance of distilled water. The refreshing storage steps include picking, sorting, soaking, bagging and storing. According to the invention, a low-oxygen high-carbon dioxide low-temperature gas environment is created in the manner of adjusting the ratio of O2 to CO2 after the collybia albuminosa is soaked in a preservation solution for 30min, the aerobic respiration of the collybia albuminosa is extremely restrained and the toxic effects of anaerobic respiration and carbon dioxide are not caused; the refreshing storage period of the fresh collybia albuminosa is prolonged for 15-20 days according to the invention; the operation is simple and convenient; the taste, appearance and nutritional ingredients of collybia albuminosa are all free from obvious change.

The invention discloses a fence preservation method for prolonging shelf life of cold fresh poultry. The fence preservation method for prolonging the shelf life of the cold fresh poultry comprises the following steps of: placing fresh poultry which is obtained by slaughtering, washed completely and cut into a refrigeration storage at the temperature of between 2 and 5 DEG C and precooling the poultry for 1 to 2 hours, so that the surface temperature of the poultry is reduced below 5 DEG C and the internal temperature of the poultry is reduced below 10 DEG C; transferring the precooled poultryto a purification room and performing surface sterilization on the poultry through ozone or ozone solution of an ozone generator; immersing the poultry subjected to ozone sterilization into chitosan glutamate solution to retain freshness; taking out and draining the poultry; placing the poultry after corrosion prevention and freshness preservation into a food plastic packaging box; introducing carbon dioxide (CO2) and nitrogen (N2) into the food plastic packaging box and performing sealing package; and storing the packaged poultry into a cold chain at the temperature of between 2 and 5 DEG C.The fence preservation method for prolonging the shelf life of the cold fresh poultry has good effect and is suitable for retaining freshness of the fresh cut poultry.

The invention discloses a surface spraying agent capable of prolonging the shelf life of fruits. The spraying agent consists of the following raw materials in parts by weight: 4 to 6 parts of a melonvine retting matter, 0.5 to 0.8 part of sodium diacetate, 2 to 3 parts of an exocarpium benincasae extract, 5 to 7 parts of gum, 3 to 4 parts of gelatin and 10 to 20 parts of a mixed extracting solution. The surface spraying agent capable of prolonging the shelf life of fruits disclosed by the invention is good in polishing and glossy effects after being used, has the effects of insect expelling,sterilization, fresh keeping and the like, and is natural in ingredients, non-toxic, healthy and high in safety.

The invention discloses a persimmon processing method. The persimmons are air-dried, peeled, kneaded and decolorized, and then ripened for the first time, softened for the first time, ripened for the second time, softened for the second time, and finally stored for frosting to obtain the dried persimmons. In this method, konjac glucomannan solutions with different mass contents are used to dip-coat persimmon pulp in the peeling, ripening and frosting stages of persimmon processing, and the film-forming and antibacterial properties of konjac glucomannan solution are used to combine two steps at the same time. The high-temperature short-time treatment method and medium-temperature baking accelerate the deastringency and ripening of persimmon pulp, promote the formation of persimmon frost, improve the quality and flavor of persimmon, prolong the shelf life of persimmon, and realize the clean production of persimmon; The process of the method is reasonable, each process index is complete and feasible, and is suitable for industrial production.

According to the vending machine, the capacity of capsule bodies can be improved through the basically S-shaped goods storage cavity, the capsule bodies contained in the goods storage cavity can be supported through the goods storage shell, and the situation that normal use of a limiting component is affected due to the fact that the weight of the multiple capsule bodies burdens the limiting component is avoided; due to the fact that the storage cavity is basically in the S shape, in the falling process of the capsule body, the capsule body is buffered through the bent portion of the storage cavity, the capsule body can be prevented from falling too fast or being subjected to large impact force, and agricultural products in the capsule body are effectively protected against damage. The capsule body can store various types of agricultural products, the elastomer filled with the inert gas can achieve an effective buffering effect, the inert gas with certain pressure in the elastomer canenter the straight cylinder part through the one-way valve, and part of air in the straight cylinder part is exhausted, so that the agricultural products are in a hypoxic state, aerobic respiration isavoided, and freshness of agricultural products is kept.

The invention discloses a construction of a storage and transportation box for fresh stems and leaves of Talinum crassifoliums. The storage and transportation box comprises a box body; supporting columns are arranged at the bottom end of the box body; the two sides of the box body are provided with first lugs respectively, second lugs are arranged on the side faces of the box body above the side parts of the first lugs, and connecting holes are formed in the first lugs and the second lugs; a bottom plate is arranged at the bottom end of an inner cavity of the box body, bosses are arranged on the inner wall of the box body above the bottom plate, and a transverse partition plate is connected to the surfaces of the bosses; the top end of the box body is connected with a box cover; longitudinal partition plates are connected between the bottom plate and the transverse partition plate and between the transverse partition plate and the box cover; and the box body is rectangular, and the box body is composed of a non-toxic and hard opaque plastic. The storage and transportation box has the advantages that specification is uniform, mechanical operation is convenient, and the storage and transportation box is suitable for mechanical storage and transportation of the fresh stems and leaves of the Talinum crassifoliums, is also suitable for storage and transportation of other plant products such as fresh vegetables, medicinal materials and fruits, and has wide application prospects.

The invention pertains to the bio-engineering technical field, disclosing a fermentation method of alcohol with high concentration. The invention overcomes the shortages of low fermentation efficiency and long fermentation time, etc., of the existing alcohol fermentation technique. The invention adopts the steps that: bacteria-free air is introduced at the first stage; after 8 to 30 hours fermentation, material and fermentation agent are added under the temperature of 25 to 35 DEG C, oscillated or stirred with a rotation speed of 10-500r / min for 50 to 66 hours; the high concentration alcohol is made, and the volume concentration of the alcohol in the fermentation liquid is up to 16 to 18 percent. The invention can fast and effectively produce the high concentration alcohol.

The invention discloses an intelligent water quality sampling and detecting device, and relates to the technical field of water quality sampling. The intelligent water quality sampling and detecting device comprises a sampling ship body, a sampling opening is formed in the upper side wall of the sampling ship body, a sliding mechanism is arranged on the upper side wall of the sampling ship body, and a first rotating rod is connected to the sliding mechanism. The water quality sampling depth can be conveniently adjusted, so that the water quality at different depths can be sampled at one time, the sampling is more convenient, the accuracy of the sampling result is ensured, meanwhile, algae in the sampled water quality can be automatically crushed in the sampling process, a stirring effect is achieved, sludge and humus are micronized, and the water quality is changed into stable and balanced turbid liquid, so that the accuracy of a sampling result is ensured, air in the sampled water quality can be pumped out after sampling, aerobic respiration of microorganisms is inhibited, and the accuracy of a detection result is improved.

The invention discloses a preparation method of freshly ground soybean milk. The preparation method comprises the steps of raw material preparation, soybean baking, soybean soaking, soybean peeling, coarse crushing, soybean milk boiling, soybean milk gelatinizing, soybean milk homogenizing, soybean milk storage, soybean milk filling, boxing and the like, wherein the soybean baking operation comprises the following steps of placing a prepared soybean raw material in a baking chamber, and setting the temperature in the baking chamber to be 110-120 DEG C and the baking time to be 30-50min. According to the invention, before soybeans are soaked, soybeans are subjected to baking process operation for inactivating the soybeans, and then aerobic respiration of the soybeans is avoided, and deterioration of the soybeans due to long-time soaking is avoided. In addition, beany flavor carried by the soybeans can be removed after the soybeans are subjected to the baking process operation, so that mouthfeel of the prepared soybean milk is improved.

The invention discloses tea leaf-polished glutinous rice mixed fermentation equipment and method and relates to the technical field of tea leaf-polished glutinous rice mixed fermentation equipment. The equipment and the method are used for solving problems of the existing tea leaf-polished glutinous rice mixed fermentation equipment that functions are single and working personnel inconveniently control fermentation environments inside devices. A stirring rod is mounted inside a main body bracket and is connected with the main body bracket through a bearing, a spraying pipe is mounted at the upper end inside the main body bracket and is fixedly connected with the main body bracket, a spraying nozzle is mounted at the lower end of the spraying pipe and is fixedly connected with the sprayingpipe, a supporting mounting plate is mounted at the upper end of one side of the main body bracket, a humidifying pump is mounted at the upper end of the supporting mounting plate and is fixedly connected with the supporting mounting plate, an exhaust valve is mounted at one side of the upper end of the main body bracket and is fixedly connected with the main body bracket, and a gas-pressure meteris mounted at one side of the upper end of the main body bracket.

The invention discloses a method for preserving sunflower pollen. The method comprises: (1) sleeving sunflower floral disc with an 80-mesh gauze bag before loosening powder; (2) disinfecting a pollencollecting device, a relay thermal insulating box and a refrigerator by using 75% alcohol in advance, and carrying out air drying so as to be spare; (3) collecting sunflower pollen from 10:00 to 13:00in fine weather, and transferring the pollen into the pollen collecting device; and (4) rapidly sealing the pollen collecting device after inflating the pollen collecting device with CO2, immediatelytransferring the pollen collecting device into the relay thermal insulating box, and transferring the pollen collecting device in the relay thermal insulating box into the 4 DEG C refrigerator withinhalf an hour. According to the present invention, the method is simple in operation, can preserve a large amount of pollen, and can meet the demand of large-scale breeding on sunflower pollen, wherein the sunflower pollen has high vigor after being preserved for 30 days, and the setting rate after pollination is above 70%.

The invention discloses a storage method of punica granatum through a controlled atmosphere cold storage warehouse, and belongs to the technical field of storage of punica granatum. The storage methodcomprises the following steps of step 1, before the punica granatum is warehoused, thoroughly cleaning the inner part of the controlled atmosphere cold storage warehouse with alcohol, performing ventilating and performing drying by airing; step 2, adding the punica granatum in the controlled atmosphere cold storage warehouse; step 3, adjusting the oxygen concentration in the controlled atmospherecold storage warehouse to be 3%, wherein the concentration of carbon dioxide is 3%, and the concentration of nitrogen is 94%; step 4, adjusting the inner pressure of the controlled atmosphere cold storage warehouse to 10-70mmHa through an air pressure controller, and lowering the temperature of the inner part of the controlled atmosphere cold storage warehouse to be 2-3 DEG C through an air conditioner; and step 5, moving out a collecting box loaded with the punica granatum, wherein the punica granatum revives after being taken out for one week, can be totally sold, and can also be transferred to a freezer for slow selling. The storage method solves the problem that in the prior art, the punica granatum is short in storage time, besides, protection of a balancing bag of the controlled atmosphere cold storage warehouse can be realized, the service life of the balancing bag of the controlled atmosphere cold storage warehouse can be effectively prolonged, and smooth operation of the storage process of the punica granatum can be guaranteed.

The invention discloses a gas concentration control method of a refrigerator and a fresh-keeping refrigerator. Wherein, the method includes: monitoring the carbon dioxide concentration in the drawer when the drawer is closed; according to the range of the carbon dioxide concentration, executing a corresponding adjustment strategy to adjust the gear position and the adjustable gas pressure of the vacuum pump in the nitrogen-oxygen separation membrane module. The gears of the air-adjusted membrane in the air-adjusted membrane assembly; wherein, the initial gears of the vacuum pump and the air-adjusted membrane are both intermediate gears. According to the carbon dioxide concentration in the drawer, the present invention can realize the linkage control of the air-conditioning membrane and the nitrogen-oxygen separation membrane module, and can judge whether it is necessary to adjust the rotation speed of the vacuum pump and the effective use area of ​​the air-conditioning membrane according to the carbon dioxide concentration in the drawer. While reducing the oxygen concentration in the drawer, ensure that the carbon dioxide concentration in the drawer is appropriate. It can effectively inhibit the aerobic respiration of fruits and vegetables and avoid the damage caused by anaerobic respiration of fruits and vegetables.

The invention discloses a photocatalytic self-controlled-atmosphere fruit and vegetable fresh-keeping bag. A bag body of the fresh-keeping bag comprises a main body supporting layer and a photocatalytic functional layer loaded with photocatalytic particles and an ethylene inhibitor, wherein the photocatalytic functional layer is arranged on one side, close to an inner cavity of the bag body, of the main body supporting layer; the fresh-keeping bag further comprises a waterproof functional layer; the waterproof functional layer is arranged on one side, close to the outside, of the main body supporting layer; the photocatalytic functional layer is formed by curing a photocatalytic functional coating; and the photocatalytic functional coating comprises the following components in parts by weight: 0.01-10 parts of photocatalytic nano titanium dioxide particles with coating layers on the surfaces, 0.001-0.2 part of a slow-release ethylene inhibitor and 0.001-10 parts of a binding agent. Thephotocatalytic self-controlled-atmosphere fruit and vegetable fresh-keeping bag is simple in structure and simple and convenient to produce; the maturity of fruits and vegetables can be effectively delayed and the aim of prolonging the fresh-keeping period of the fruits and vegetables is realized.