Electromagnetic field photodynamic all-in-one machine moving equipment capable of degrading rice yeast acid

Abstract

The invention provides electromagnetic field photodynamic all-in-one machine mobile equipment capable of degrading rice yeast acid, the equipment is used in cooperation with a curcumin solution, the equipment comprises a refrigeration house, an electromagnetic field generator and an LED light-emitting assembly, and the operation steps are as follows: the curcumin solution is sprayed on fruits and vegetables; putting the fruits and vegetables into an electromagnetic field photodynamic all-in-one machine mobile device, turning on a control power supply, and carrying out electromagnetic field photodynamic treatment to complete a sterilization and fresh-keeping process; wherein the concentration of the curcumin solution is 1-50 [mu] mol / L; the temperature of the refrigeration house is set to be 4 + / -1 DEG C, the light source of the LED light-emitting assembly is 425 nm, and the irradiation time is 1-90 min; and the electric field intensity of the electromagnetic field generator is 1-5kV. According to the present invention, the electromagnetic field treatment is adopted to activate the curcumin-mediated photodynamic technology, the photodynamic effect and the reactive oxygen substance generated by visible light are adopted to effectively reduce the generation of the rice yeast acid, and the microorganisms are inactivated, such that the microorganisms can be killed to the maximum extent, the nutritional components of the food can be maintained, the good flavor and the good taste can be preserved, and the shelf life can be effectively prolonged.

Description

[Technical field]

[0001] The invention belongs to the technical field of food preservation and storage, and in particular relates to a degradable fumonisin electromagnetic field photodynamic integrated mobile device. [Background technology]

[0002] Bongkrekic acid is a toxin that causes food poisoning and is produced by the fermented rice flour subspecies of the genus Pseudomonas cereus. It has strong biological activity and can cause serious metabolic disorders and multiple organ failure in the poisoned person, posing a great threat to food safety and human health. This toxin is widely present in fermented corn flour products, spoiled fresh Tremella and other starch products. Among them, since the storage period of fresh Tremella is very short, it is very easy to be infected by Pseudomonas cereus after being damp and spoiled, thus producing the toxic toxin Bongkrekic acid. Dai Yonghai and others used ultra-high performance liquid chromatography-tandem mass spectrometry to detect Bongkrekic acid in Tremella and its products; Wang Qianqian used colloidal gold method to detect Bongkrekic acid in foods such as corn and rice milk. It is particularly important to develop a fresh-keeping and sterilization equipment that can effectively degrade Bongkrekic acid in food to improve food safety.

[0003] Tremella, also known as snow fungus and white wood ear, is a globally recognized nutritious edible fungus and is known as the "king of fungi". Fresh Tremella is pure white to milky white, soft and elastic, and contains rich gelatinous substances, amino acids, minerals and other nutrients. It has medicinal and health-care effects, including beauty, blood sugar lowering, immune regulation and anti-aging.

[0004] In order to solve the above problems, we have developed an electromagnetic field photodynamic integrated machine that can effectively degrade fumonisin during storage and transportation, maintain the original flavor and taste of food, and improve food safety and economic benefits. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide an electromagnetic field photodynamic integrated mobile device that can degrade fumonisin. It uses electromagnetic field treatment to activate curcumin-mediated photodynamic technology. Through the photodynamic effect, the active oxygen substances generated by visible light effectively reduce the production of fumonisin and inactivate microorganisms. It can kill microorganisms on fruits and vegetables to the greatest extent, maintain the nutritional components of food, preserve good flavor and taste, and effectively extend the shelf life.

[0006] The present invention is achieved in that:

[0007] A degradable fumonisin electromagnetic field photodynamic integrated device, the device is used in conjunction with a curcumin solution, the device comprises a cold storage, an electromagnetic field generator and an LED light-emitting component, and the electromagnetic field generator and the LED light-emitting component are arranged inside the cold storage;

[0008] The operating steps of the device are as follows:

[0009] Step 1: Spray the curcumin solution on fruits and vegetables;

[0010] Step 2: Put the fruits and vegetables processed in step 1 into the electromagnetic field photodynamic integrated device, turn on the control power of the electromagnetic field generator and the LED light-emitting component, perform electromagnetic field photodynamic treatment, and complete the sterilization and preservation process; wherein the electromagnetic field generator is in operation during the food preservation period;

[0011] The concentration of the curcumin solution is 1 to 50 μmol / L; the temperature of the cold storage is set to 4±1°C; the light source of the LED light-emitting component is 420 to 480 nm; the electric field strength of the electromagnetic field generator is 1 to 5 kV; and the irradiation time of the LED visible light is 1 to 90 min.

[0012] Furthermore, the concentration of the curcumin solution is 40 μmol / L.

[0013] Furthermore, the curcumin in the curcumin solution is food-grade curcumin, and the purity of the curcumin is above 93.5%.

[0014] Furthermore, the condition of the electromagnetic field treatment in step 2 is: the electric field intensity is 2.5 kV.

[0015] Furthermore, in step 2, the irradiation time of the LED visible light is 60 minutes, and the wavelength is 425 nm.

[0016] Furthermore, a control panel is provided outside the cold storage; the control panel is electrically connected to the refrigeration system, electromagnetic field generator, and LED light-emitting component of the cold storage.

[0017] Furthermore, the device also includes a storage rack and a sliding rail; the sliding rail is fixed on the inner walls on both sides of the cold storage, one side of each storage rack is slidably connected to the movable rail, and an LED light-emitting component is arranged above each storage rack.

[0018] Furthermore, the electromagnetic field generator is in the shape of an elongated strip, and 425nm LED lamp beads are evenly embedded on its outer surface. The electromagnetic field generator is suspended in the middle of the cold storage through a liftable suspension frame and is located between the storage racks on the left and right sides.

[0019] Furthermore, a door handle is provided on the door of the cold storage, and movable wheels are provided at the bottom of the cold storage.

[0020] The present invention has the following advantages:

[0021] The present invention uses an electromagnetic field to preserve fruits and vegetables. The electromagnetic field can cause water molecules in fruits and vegetables to resonate, making the water molecules in an active state, greatly reducing the problem of excessive water loss in fruits and vegetables during storage; the technology can also slow down the respiration of fruits and vegetables by regulating the activity of enzymes, thereby extending their shelf life; compared with traditional refrigeration preservation technology, the electromagnetic field preservation technology has the advantages of simple operation, low energy consumption, more energy-saving and environmentally friendly, safe and non-toxic, etc.

[0022] At the same time, the electromagnetic field treatment is used to activate the curcumin-mediated photodynamic technology. Through the photodynamic effect, the active oxygen species generated by visible light effectively reduce the production of fumonisin, and inactivate the microorganisms, which can kill the microorganisms on fruits and vegetables to the greatest extent. The photosensitizer used in the present invention is curcumin, which has the characteristics of safety, non-toxicity, and no side effects on the human body. After being irradiated by an appropriate light source, active oxygen is generated through a light reaction, destroying microbial cell membranes, DNA, and proteins, selectively inhibiting the growth of microorganisms, and significantly inhibiting the activity of polyphenol oxidase and peroxidase, thereby increasing the antioxidant activity of agricultural products and delaying the aging and decay of agricultural products.

[0023] In summary, the electromagnetic field photodynamic integrated machine developed by the present invention can not only effectively degrade fumonisin, inhibit the growth of fruit and vegetable microorganisms and the infection of foodborne pathogens, and improve food safety, but also maintain the nutritional content, good flavor and taste of food to the greatest extent.

Brief Description of the Drawings

[0024] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0025] Figure 1 The secretion of Tremella fuciformis added with fumonisin-producing bacteria in Example 1 of the present invention under different technical treatments;

[0026] Figure 2 The effect of different concentrations of curcumin solution on the total number of Tremella colonies in Example 2 of the present invention;

[0027] Figure 3 The effect of different electric field intensities on the total number of Tremella fuciformis colonies in Example 3 of the present invention;

[0028] Figure 4 The effect of different irradiation times of 425nm LED visible light on the total number of Tremella fuciformis colonies in Example 4 of the present invention;

[0029] Figure 5 The effects of the treatment methods of different technologies in Example 5 of the present invention on the sensory quality score of Tremella fuciformis during storage;

[0030] Figure 6 The effects of the treatment methods of different techniques in Example 6 of the present invention on the water content of Tremella fuciformis during storage;

[0031] Figure 7 The effects of the treatment methods of different technologies in Example 7 of the present invention on the color difference of Tremella fuciformis during storage;

[0032] Figure 8 The effects of the treatment methods of different techniques in Example 8 of the present invention on the hardness of Tremella during storage;

[0033] Fig. 9 It is a schematic diagram of a degradable fumonisin electromagnetic field photodynamic integrated device of the present invention.

[0034] In the figure: 1. Cold storage; 2. Electromagnetic field generator; 3. LED light-emitting component; 4. Control panel; 5. Storage rack; 6. Sliding guide rail; 7. LED lamp beads; 8. Lifting suspension bracket; 9. Door handle; 10. Moving wheel. [Specific implementation method]

[0035] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Fig. 9 The present invention relates to a degradable fumonisin electromagnetic field photodynamic integrated device, the device is used in conjunction with a curcumin solution, the device comprises a cold storage 1, an electromagnetic field generator 2, an LED light-emitting component 3 and a control panel 4, the electromagnetic field generator 2 and the LED light-emitting component 3 are arranged inside the cold storage 1;

[0038] The operating steps of the device are as follows:

[0039] Step 1: Spray the curcumin solution on fruits and vegetables;

[0040] Step 2: Put the fruits and vegetables processed in step 1 into the electromagnetic field photodynamic integrated device, turn on the control power of the electromagnetic field generator 2 and the LED light-emitting component 3, perform electromagnetic field photodynamic treatment, and complete the sterilization and preservation process; wherein the electromagnetic field generator is in operation during the food preservation period;

[0041] The concentration of the curcumin solution is 1 to 50 μmol / L; the temperature of the cold storage is set to 4±1°C; the light source of the LED light-emitting component is 420 to 480 nm; the electric field strength of the electromagnetic field generator is 1 to 5 kV; and the irradiation time of the LED visible light is 1 to 90 min.

[0042] In a specific implementation, a preferred embodiment is: the concentration of the curcumin solution is 40 μmol / L.

[0043] In a specific implementation, a preferred embodiment is: the curcumin in the curcumin solution is food grade curcumin, and the purity of the curcumin is above 93.5%.

[0044] In a specific implementation, a preferred embodiment is as follows: the condition of the electromagnetic field treatment in step 2 is: the electric field strength is 2.5 kV.

[0045] In a specific implementation, a preferred embodiment is as follows: the irradiation time of the LED visible light in step 2 is 60 minutes, and the wavelength is 425 nm.

[0046] In a specific implementation, a preferred embodiment is as follows: a control panel 4 is provided outside the cold storage 1 ; the control panel 4 is electrically connected to the refrigeration system, the electromagnetic field generator 2 , and the LED light-emitting assembly 3 of the cold storage 1 .

[0047] In a specific implementation, a preferred embodiment is as follows: the device further comprises a shelf 5 and a sliding rail 6; the sliding rail 6 is fixed to the inner walls of both sides of the cold storage 1, one side of each shelf 5 is slidably connected to the movable rail 6, and an LED light emitting assembly 3 is arranged above each shelf 5. The arrangement of the sliding rail 6 facilitates the pulling out of the shelf 5 and the uniform placement of fruits and vegetables.

[0048] In a specific implementation, a preferred embodiment is as follows: the electromagnetic field generator 2 is in the shape of a long strip, and 425nm LED lamp beads 7 are evenly embedded on its outer surface. The electromagnetic field generator 2 is suspended in the middle of the cold storage through a liftable suspension frame 8, and is located between the left and right racks 5. This setting can make the emission of light and electromagnetic field more uniform.

[0049] In a specific implementation, a preferred embodiment is as follows: a door handle 9 is provided on the door of the cold storage 1, and a moving wheel 10 is provided at the bottom of the cold storage.

[0050] The following will be combined with the attached Figure 1-9 The technical scheme of the present invention is clearly and completely described in detail with specific embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments is not specified, they are all conventional products that can be purchased commercially.

[0051] Example 1

[0052] Secretion of Tremella fuciformis treated with different technologies after adding fumonisin-producing bacteria

[0053] A certain amount of Tremella fuciformis was weighed and inoculated with Pseudomonas cerebrovenanthi in a sterile environment, and then randomly divided into four groups: control group, electromagnetic field preservation group (treated with only 2.5kV electromagnetic field), photodynamic group (sprayed with 40μmol / L curcumin and irradiated with visible light for 60min), and electromagnetic field photodynamic group (sprayed with 40μmol / L curcumin and then placed in an all-in-one machine). The storage environment of the four groups was 4°C and the air humidity was 90%. Samples were taken every 5 days to detect the secretion of fumonisin in each group during storage.

[0054] Effect verification: Figure 1 As shown in the data, during the storage period, the fumonisin content of each group of Tremella samples increased with the extension of the storage time. The fumonisin content of the control group on the 10th day was 0.27 mg / kg, which exceeded the national limit standard (0.25 mg / kg) and lost its edible value; the electromagnetic field preservation group, photodynamic group and electromagnetic field photodynamic group were significantly lower than the control group, among which the electromagnetic field photodynamic group had the most obvious effect in reducing the fumonisin content, and there was no significant difference in the degree of reduction between the electromagnetic field preservation group and the photodynamic group; the fumonisin content of the electromagnetic field photodynamic group on the 10th, 15th and 20th days were 0.06 mg / kg, 0.08 mg / kg and 0.12 mg / kg respectively.

[0055] The results show that electromagnetic field synergistic photodynamic technology can effectively degrade fumonisin and improve the safety of Tremella fuciformis.

[0056] Example 2

[0057] Effects of different concentrations of curcumin solution on the total number of Tremella fuciformis colonies

[0058] A certain amount of fresh Tremella was weighed and divided into five groups and marked. Each group of Tremella was sprayed with 10, 20, 30, 40 and 50 μmol / L curcumin solution, respectively, irradiated with LED visible light for 60 min, and stored in an environment of 4°C and 90% air humidity for 5 days, after which the total number of colonies was calculated.

[0059] Effect verification: The bacterial plate counting method was used to evaluate the sterilization effect of Tremella fuciformis in the above treatment group and control group. The results are shown in Figure 2 . Under the same storage conditions, when the concentration of curcumin reached 40μmol / L and 50μmol / L, the bactericidal effects of both reached the best, reducing the total number of colonies in fresh Tremella by two orders of magnitude, and almost inactivating all the bacteria in fresh Tremella. It can be seen that the photodynamic inactivation effect of bacteria in fresh Tremella is enhanced with the increase of curcumin concentration, but when it reaches 40μmol / L, the sterilization effect is no longer significantly enhanced, so in subsequent experiments, 40μmol / L curcumin was used as the optimal photosensitizer concentration to continue the experiment.

[0060] Example 3

[0061] Effects of different electric field intensities on the total number of Tremella fuciformis colonies

[0062] A certain amount of fresh Tremella fuciformis was weighed and divided into five groups and marked. They were placed in electromagnetic fields with electric field strengths of 1 kV, 1.5 kV, 2.5 kV, 3.5 kV, and 5 kV, respectively. The total number of colonies was calculated after the mixture was stored at 4 °C and 90% humidity for 5 days.

[0063] Effect verification: The bacterial plate counting method was used to evaluate the sterilization effect of Tremella fuciformis in the above treatment group and control group. The results are shown in Figure 3 The growth of microorganisms on the surface of Tremella treated with this technology was inhibited. When the electric field strength was 1-2.5 kV, the number of microorganisms on the surface of Tremella decreased with the increase of the electric field strength. After the treatment with an electric field strength of 2.5 kV, the total number of Tremella colonies decreased slowly and remained almost unchanged with the increase of the electric field strength.

[0064] Example 4

[0065] Effects of different irradiation time of LED visible light on the total number of Tremella fuciformis colonies

[0066] A certain amount of fresh Tremella was weighed and divided into five groups and marked. Each group was first sprayed with 40 μmol / L curcumin, and then irradiated with a 425nm LED bulb for 0, 10, 30, 60, and 90 min, respectively. The total number of colonies was calculated after being stored in an environment of 4°C and 90% air humidity for 5 days.

[0067] Effect verification: The bacterial plate counting method was used to evaluate the sterilization effect of Tremella fuciformis in the above treatment group and control group. Figure 4 It can be seen that when the concentration of curcumin is 40μmol / L, the total number of colonies in Tremella fuciformis shows a significant decreasing trend as the irradiation time of LED visible light increases. Figure 2 and Figure 3It can be seen that when the curcumin concentration is 40 μmol / L, the electric field strength is 2.5 kV, and the illumination time is 60 min, the inactivation rate of microorganisms in Tremella fuciformis can reach 99%, and the sterilization effect is significant.

[0068] Example 5

[0069] Effects of different processing techniques on the total sensory quality score of Tremella fuciformis during storage

[0070] A certain amount of Tremella was weighed and randomly divided into a control group, an electromagnetic field preservation group (treated with only 2.5 kV electromagnetic field), a photodynamic group (sprayed with 40 μmol / L curcumin and irradiated for 60 min), and an electromagnetic field photodynamic group (first sprayed with 40 μmol / L curcumin, then placed in an all-in-one machine, with an electric field intensity of 2.5 kV and an illumination time of 60 min). The four groups were stored in an environment of 4°C and 90% air humidity for 10 days.

[0071] Effect verification: According to GB 7096-2014 "National Food Safety Standard Edible Fungi and Their Products", a sensory scoring table for Tremella was prepared in accordance with the requirements, and sensory evaluation was conducted on Tremella treated with different techniques. Ten students who had undergone food sensory training and mastered food sensory analysis skills were randomly selected to score Tremella color, smell, appearance quality and taste. The total score was 100 points, and the average value was recorded. The specific scoring indicators are shown in Table 1.

[0072] Table 1 Sensory evaluation standards for fresh Tremella

[0073]

[0074]

[0075] The results show that if Figure 5 As shown in the figure, after being treated with the electromagnetic field, the shape is still full and intact, and it has a certain chewiness; the Tremella has a uniform color, is off-white, and still retains its unique aroma. The Tremella in the control group has obvious browning and decay, and its fragrance has been completely lost. The Tremella in the photodynamic treatment group also showed browning, and its fragrance faded. The Tremella in the electromagnetic field photodynamic group can still maintain its original color and fragrance, and its appearance is still full and intact, which can meet the sensory needs of consumers for Tremella. Compared with the electromagnetic field preservation group, the electromagnetic field photodynamic group has no peculiar smell, the Tremella has a better shape, is slightly wrinkled, and has better toughness.

[0076] Example 6

[0077] Effects of different processing techniques on the water content of Tremella fuciformis during storage

[0078] A certain amount of Tremella was weighed and randomly divided into a control group, an electromagnetic field preservation group (treated with only 2.5kV electromagnetic field), a photodynamic group (sprayed with 40μmol / L curcumin and irradiated for 60min), and an electromagnetic field photodynamic group (first sprayed with 40μmol / L curcumin, then placed in an all-in-one machine, with an electric field intensity of 2.5kV and an illumination time of 60min). The four groups were stored in an environment of 4°C and an air humidity of 90%, and a certain amount of Tremella was taken every 2 days to measure its moisture content.

[0079] The results show that if Figure 6 As shown in the figure, with the extension of storage time, the water content of the four groups of Tremella showed a downward trend, among which the electromagnetic field preservation group slowed down the loss better than the photodynamic group, and there was no significant difference; the effect of delaying water loss of Tremella in the electromagnetic field photodynamic group was the most obvious, and it could still maintain 90.07% of the water content on the 10th day, the electromagnetic field preservation group had a water content of 89.97%, the photodynamic group had a water content of 89.93%, and the control group had a water content of 89.86%. It can be seen that electromagnetic field treatment can slow down water loss and maintain the water content of Tremella to the maximum extent.

[0080] Example 7

[0081] Effects of different technical treatments on color difference of Tremella fuciformis during storage

[0082] A certain amount of Tremella was weighed and randomly divided into a control group, an electromagnetic field preservation group (treated with an electromagnetic field of 2.5 kV only), a photodynamic group (sprayed with 40 μmol / L curcumin and irradiated for 60 min), and an electromagnetic field photodynamic group (first sprayed with 40 μmol / L curcumin, then placed in an all-in-one machine, with an electric field intensity of 2.5 kV and an illumination time of 60 min). The four groups of samples were stored in an environment of 4°C and 90% air humidity for 10 days, and a certain amount of Tremella was taken every 2 days to measure the color difference of each group of samples using a colorimeter.

[0083] The results are as follows Figure 7 As shown in the figure, during the storage period, the whiteness of Tremella Hunter under different treatment methods showed a downward trend. Compared with the control group, the whiteness of fresh Tremella treated with electromagnetic field was significantly higher than that of the control group, and the whiteness of the photodynamic group was also higher than that of the control group. Among them, after 10 days of storage, the whiteness of the electromagnetic field photodynamic group, electromagnetic field preservation group, photodynamic group and control group decreased by 3.14%, 6.86%, 10.13% and 13.28% respectively, which shows that the quality of fresh Tremella treated with electromagnetic field is higher than that of the control group. It can be seen that the electromagnetic field can better maintain the color of fresh Tremella itself, showing off-white color, reducing the browning phenomenon on the surface of fresh Tremella, and effectively maintaining the sensory quality of Tremella to a certain extent compared with Tremella treated with photodynamic technology alone.

[0084] Example 8

[0085] Effects of different processing techniques on the hardness of Tremella fuciformis during storage

[0086] A certain amount of Tremella was weighed and randomly divided into a control group, an electromagnetic field preservation group (treated with an electromagnetic field of 2.5 kV only), a photodynamic group (sprayed with 40 μmol / L curcumin and irradiated for 60 min), and an electromagnetic field photodynamic group (first sprayed with 40 μmol / L curcumin, then placed in an all-in-one machine, with an electric field intensity of 2.5 kV and an illumination time of 60 min). The four groups of samples were stored in an environment of 4°C and 90% air humidity for 10 days, and a certain amount of Tremella was taken every 2 days for hardness determination using a texture analyzer (P2 probe).

[0087] The results are as follows Figure 8 As shown in the figure, with the extension of storage time, the hardness of the control group and the three treatment groups showed a downward trend, but the decline in the control group and the photodynamic group was significantly higher than that in the electrostatic treatment group. On the 10th day, the hardness of the control group, electromagnetic field preservation group, photodynamic group and electromagnetic field photodynamic group were 83.6N, 89.8N, 87.5N and 94.1N respectively. Combined with the data of total colony count and water content, the untreated fresh Tremella has shown microbial growth, water loss and partial browning in the late storage period, and the surface is yellowish, which indirectly leads to a significant decrease in the hardness of the fresh Tremella, showing that the Tremella slices become soft and have no toughness. The Tremella treated with electromagnetic field has a certain inhibitory effect on its respiration, physiological metabolism and nutrient consumption, maintaining the hardness of Tremella and slowing down the decline in its hardness. It can be seen that the electromagnetic field can better maintain the hardness of fresh Tremella and maintain the sensory texture to a certain extent.

[0088] In summary, the degradable fumonisin electromagnetic field photodynamic integrated mobile device provided by the present invention can effectively degrade the content of fumonisin, kill the microorganisms on Tremella to the greatest extent, and after experimental verification, the sterilization rate can be as high as 99%. The curcumin used in the present invention has a single structure, high active oxygen production, and good photosensitivity. The use of LED visible light can stimulate the generation of active oxygen, greatly reducing the sterilization cost, and the photosensitization non-thermal sterilization technology mediated by it is safer than traditional sterilization methods. Electromagnetic field activated photodynamic preservation technology, as a non-contact composite physical preservation method, can not only effectively reduce water loss, delay the decline in hardness and browning of color, but also extend the storage time of Tremella refrigeration preservation to 10 days (the existing fresh Tremella refrigeration storage period is 3 to 5 days), greatly improving the utilization rate of the product and bringing good economic benefits. The method of the present invention has spectral sterilization characteristics, and it belongs to non-thermal sterilization, can degrade the fumonisin present in food, and at the same time, the nutritional components, good flavor and taste of food are kept to the greatest extent, effectively extending the shelf life.

[0089] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A degradable fumonisin electromagnetic field photodynamic integrated mobile device, characterized in that: The device is used in conjunction with a curcumin solution, and comprises a cold storage, an electromagnetic field generator and an LED light-emitting component, wherein the electromagnetic field generator and the LED light-emitting component are arranged inside the cold storage; The operating steps of the device are as follows: Step 1: Spray the curcumin solution on fruits and vegetables; Step 2: Put the fruits and vegetables processed in step 1 into the electromagnetic field photodynamic integrated device, turn on the control power of the electromagnetic field generator and the LED light-emitting component, perform electromagnetic field photodynamic treatment, and complete the sterilization and preservation process; The concentration of the curcumin solution is 1 to 50 μmol / L; the temperature of the cold storage is set to 4±1°C; the light source of the LED light-emitting component is 420 to 480 nm; the electric field strength of the electromagnetic field generator is 1 to 5 kV; and the irradiation time of the LED visible light is 1 to 90 min.

2. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to claim 1, characterized in that: The concentration of the curcumin solution is 40 μmol / L.

3. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to claim 1, characterized in that: The curcumin in the curcumin solution is food-grade curcumin, and the purity of the curcumin is above 93.5%.

4. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to claim 1, characterized in that: The condition of the electromagnetic field treatment in step 2 is: the electric field strength is 2.5 kV.

5. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to claim 1, characterized in that: The irradiation time of the LED visible light in step 2 is 60 minutes, and the wavelength is 425 nm.

6. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to any one of claims 1 to 5, characterized in that: A control panel is arranged outside the cold storage; the control panel is electrically connected to the refrigeration system, the electromagnetic field generator and the LED light-emitting component of the cold storage.

7. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to any one of claims 1 to 5, characterized in that: The device also includes a storage rack and a sliding rail; the sliding rail is fixed on the inner walls of both sides of the cold storage, one side of each storage rack is slidably connected to the movable rail, and an LED light-emitting component is arranged above each storage rack.

8. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to any one of claim 7, characterized in that: The electromagnetic field generator is in the shape of a long strip, and 425nm LED lamp beads are evenly embedded on its outer surface. The electromagnetic field generator is suspended in the middle of the cold storage through a liftable suspension frame and is located between the storage racks on the left and right sides.

9. The degradable fumonisin electromagnetic field photodynamic integrated mobile device according to claim 1, characterized in that: The door of the cold storage is provided with a door handle, and the bottom of the cold storage is provided with moving wheels.

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