Device for simulating influence of environment on fragrance release of slow-release essence

Abstract

The utility model relates to a device for simulating influence of environment on fragrance release of slow-release essence. The device comprises a gas source, a buffer box, a test box and a tail gas absorption device, the gas source is connected with the buffer box through a first pipeline, the buffer box is connected with the test box through a second pipeline, the test box is connected with the tail gas absorption device through a third pipeline, the first pipeline and the second pipeline are respectively provided with a flow meter, the test box is provided with an outer cavity and an inner cavity which are sleeved inside and outside, and a heat preservation layer is arranged between the inner cavity and the outer cavity. The inner cavity is used for accommodating a slow-release essence sample to be detected, and a temperature and humidity control unit is arranged in the inner cavity. A set of device for realizing environment simulation during the fragrance release period of the slow-release essence is built through common experimental equipment, different gas components and flow rates in the environment are simulated by utilizing a gas source, and different temperatures and humidity in the environment are simulated by utilizing a temperature and humidity control unit in a test box; therefore, the influence of environmental factors on the release of the slow-release essence is mastered.

Description

Technical Field

[0001] The utility model relates to the technical field of flavor and fragrance release evaluation, in particular to a device for simulating the influence of environment on the release of slow-release flavor and fragrance. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Fragrances are substances that emit aroma molecules and can be sensed by the sense of smell or taste after reaching a set concentration. The chemical structure of flavors is mainly hydrocarbons, alcohols, aldehydes, ketones, esters, aromatics, terpenes, and heterocyclic compounds. Since the molecular weight is usually small, it is easy to volatilize and has a short retention time, which limits the scope of use of flavors.

[0004] In order to slow down the release rate of flavors, prolong the release time of flavors, and expand the scope of flavor use, the release performance of flavors can be improved through sustained-release technology. Commonly used flavor sustained-release technologies include microencapsulation method, cyclodextrin method, film method, gel method, emulsification method, etc. There are differences in the release effect and stability of flavors by different methods. Usually, the sustained-release flavors are placed at room temperature for a set time, and then the relevant indicators before and after the flavors are placed are compared and analyzed by thermal analysis, electronic nose method, gas chromatography / mass spectrometry, ultraviolet spectrophotometry, sensory evaluation method, etc. to judge.

[0005] As for the release effect and stability evaluation of sustained-release flavors, there is currently no unified testing method in the industry. Since sustained-release flavors are easily affected by the environment, it is necessary to simulate the environment in which the aroma of sustained-release flavors is released. However, the industry currently lacks equipment for simulation in the laboratory. Utility Model Content

[0006] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a device for simulating the influence of the environment on the aroma release of the sustained-release flavor. Through common experimental equipment, a set of devices for realizing environmental simulation during the aroma release of the sustained-release flavor is constructed, so that the influence of environmental factors on the release of the sustained-release flavor can be mastered under the environment of controllable gas composition, flow rate, temperature and humidity.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a device for simulating the influence of environment on the release of slow-release flavor, comprising an air source, a buffer box, a test box and a tail gas absorption device;

[0009] The air source is connected to the buffer box through a first pipe, the buffer box is connected to the test box through a second pipe, the test box is connected to the tail gas absorption device through a third pipe, flow meters are provided on the first pipe and the second pipe, the test box has an outer cavity and an inner cavity which are connected inside and outside, an insulation layer is provided between the inner and outer cavities, the inner cavity is used to accommodate the slow-release flavor sample to be tested, and a temperature and humidity control unit is provided in the inner cavity.

[0010] Furthermore, the gas source is a gas cylinder storing a set gas, and a pressure reducing valve is provided at the outlet of the gas cylinder.

[0011] Furthermore, a first flow meter is provided on the first pipeline, and a second flow meter is provided on the second pipeline.

[0012] Furthermore, one end of the first pipeline is connected to the gas source, and the other end passes through the sealing cover of the buffer box and extends into the interior of the buffer box.

[0013] Furthermore, after one end of the second pipe is led out from the inside of the buffer box, the other end passes through the sealing cover of the buffer box, the outer cavity and the inner cavity of the test box in sequence, and reaches the inside of the inner cavity of the test box.

[0014] Furthermore, a sealing tube is provided at the position where the second pipeline passes through the outer cavity and the inner cavity, for accommodating the second pipeline to pass through and achieve sealing.

[0015] Furthermore, after one end of the third pipe is led out from the inner cavity of the test box, the other end is connected to the tail gas absorption device.

[0016] Furthermore, the insulation layer between the inner and outer cavities of the test box is a hollow structure.

[0017] Furthermore, the temperature and humidity control unit includes a temperature and humidity sensor arranged in the inner cavity, a temperature and humidity controller connected to the temperature and humidity sensor and the temperature and humidity adjustment mechanism respectively, and a temperature and humidity display connected to the outer cavity.

[0018] Furthermore, the temperature and humidity regulating mechanism comprises a heater arranged between the inner and outer cavities of the test box, and a fan connected to the wall of the inner cavity.

[0019] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0020] 1. Use common experimental equipment to build a set of devices to simulate the environment during the aroma release of slow-release flavors. Use the gas source to simulate the different gas components and flow rates in the environment. Use the temperature and humidity control unit in the test chamber to simulate the different temperatures and humidity in the environment, so as to understand the impact of environmental factors on the release of slow-release flavors.

[0021] 2. The simulated temperature, humidity, gas composition and flow rate are variables relative to the slow-release flavor. Each component in the device can achieve the control of a single variable, which is conducive to mastering the release law of the slow-release flavor under the influence of different environmental factors through multiple experiments.

[0022] 3. A tail gas absorption device is installed at the tail of the device. The simulated gas can be captured and absorbed by the tail gas absorption device after the experiment, reducing the pollution of volatile gas to the experimental device, pipelines and environment, and improving the accuracy of the test results. When only simulating the influence of temperature and humidity, the simulation device with the above structure is used to reduce the pollution of volatile gas to the experimental device and pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 It is a schematic diagram of the main structure of the device for simulating the influence of the environment on the release of the aroma of the slow-release essence provided by the utility model;

[0025] Figure 2 It is a side structural schematic diagram of a device for simulating the influence of an environment on the release of aroma of a slow-release essence provided by the utility model.

[0026] In the figure: 1-gas source; 2-pressure reducing valve; 3-first flow meter; 4-buffer box; 5-sealing cover; 6-second flow meter; 7-test box; 8-sample tray; 9-temperature and humidity sensor; 10-temperature and humidity display; 11-box door; 12-sample; 13-sealing tube; 14-temperature and humidity controller; 15-exhaust gas absorption device. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are exemplary and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] As introduced in the background technology, the slow-release flavor is easily affected by factors such as temperature, humidity and airflow in the environment during the release period, but the industry currently lacks a set of equipment to control such influence through experiments.

[0031] Therefore, the following embodiment provides a device for simulating the effect of the environment on the release of the aroma of the sustained-release flavor. Through common experimental equipment, a set of devices for realizing environmental simulation during the release of the aroma of the sustained-release flavor is built, so that the influence of environmental factors on the release of the sustained-release flavor can be mastered under controllable gas composition, flow rate, temperature and humidity environment.

[0032] like Figure 1-Figure 2 As shown, a device for simulating the influence of environment on the release of aroma of slow-release flavor comprises an air source, a buffer box, a test box and an exhaust gas absorption device;

[0033] The air source is connected to the buffer box through a first pipe, the buffer box is connected to the test box through a second pipe, the test box is connected to the tail gas absorption device through a third pipe, flow meters are provided on the first pipe and the second pipe, the test box has an outer cavity and an inner cavity which are connected inside and outside, an insulation layer is provided between the inner and outer cavities, the inner cavity is used to accommodate the slow-release flavor sample to be tested, and a temperature and humidity control unit is provided in the inner cavity.

[0034] Furthermore, the gas source is a gas cylinder storing a set gas, and a pressure reducing valve is provided at the outlet of the gas cylinder.

[0035] Furthermore, a first flow meter is provided on the first pipeline, and a second flow meter is provided on the second pipeline.

[0036] Furthermore, one end of the first pipeline is connected to the gas source, and the other end passes through the sealing cover of the buffer box and extends into the interior of the buffer box.

[0037] Furthermore, after one end of the second pipe is led out from the inside of the buffer box, the other end passes through the sealing cover of the buffer box, the outer cavity and the inner cavity of the test box in sequence, and reaches the inside of the inner cavity of the test box.

[0038] Furthermore, a sealing tube is provided at the position where the second pipeline passes through the outer cavity and the inner cavity, for accommodating the second pipeline to pass through and achieve sealing.

[0039] Furthermore, after one end of the third pipe is led out from the inner cavity of the test box, the other end is connected to the tail gas absorption device.

[0040] Furthermore, the insulation layer between the inner and outer cavities of the test box is a hollow structure.

[0041] Furthermore, the temperature and humidity control unit includes a temperature and humidity sensor arranged in the inner cavity, a temperature and humidity controller connected to the temperature and humidity sensor and the temperature and humidity adjustment mechanism respectively, and a temperature and humidity display connected to the outer cavity.

[0042] Furthermore, the temperature and humidity regulating mechanism comprises a heater arranged between the inner and outer cavities of the test box, and a fan connected to the wall of the inner cavity.

[0043] Gas source 1: provides a specific gas atmosphere and gas flow rate for the slow-release flavor release. The gas in the gas cylinder can be any one or more of air, nitrogen, helium, oxygen, etc. When multiple gases are used as gas sources, they are sent to the buffer box through a mixer. The mixer is a mature component used to mix multiple gases evenly; each gas source 1 outlet is connected to a pressure reducing valve 2, and the gas is transmitted through a pipeline (such as a copper pipe), and the gas pressure in the copper pipe can be adjusted by the pressure reducing valve 2.

[0044] Pressure reducing valve 2: It has a total pressure gauge and a partial pressure gauge, which respectively display the gas source pressure and the pressure in the copper tube. It has the function of reducing pressure and regulating the gas pressure in the copper tube.

[0045] The first flow meter 3 detects and displays the gas flow rate during the period from the gas source 1 to the buffer box 4. The flow rate is adjusted by the pressure reducing valve 2 to reach the required value.

[0046] Buffer box 4: A gas buffer box with a sealing cover 5, which is a silicone cover with two holes on the top, which are the inlet and outlet of the copper tube; the distance between the bottom of the inlet copper tube and the bottom of the buffer box is 1 / 5-1 / 2 of the box height, and the distance between the bottom of the outlet copper tube and the bottom of the buffer box is 1 / 2-4 / 5 of the box height. Buffer box 4 is used to buffer the flow rate of the gas sent by gas source 1. When there are multiple gas sources 1, the generated mixed gas is buffered in buffer box 4 to achieve a stable and evenly mixed atmosphere.

[0047] The second flow meter 6 detects and displays the gas flow rate from the buffer box 4 to the test box 7 .

[0048] Test box 7: The test box is divided into an outer cavity and an inner cavity. To ensure the heat preservation function of the test box, a hollow structure is formed between the inner and outer cavities. Two temperature and humidity sensors 9 are respectively installed at the top and bottom of the inner cavity of the test box to monitor the temperature and humidity in the test box.

[0049] The outer side of the outer cavity is provided with a digital display 10 for displaying the temperature and humidity inside the box.

[0050] The top of the inner and outer cavities is provided with an opening for the copper tube to enter and exit. A sealing tube 13 is padded inside the opening to play a sealing role. The sealing tube is made of silicone.

[0051] The distance between the bottom of the air inlet copper pipe and the bottom of the buffer box is 1 / 5-1 / 2 of the box height, and the distance between the bottom of the air outlet copper pipe and the bottom of the buffer box is 1 / 2-4 / 5 of the box height.

[0052] The bottom of the test box is provided with a sample tray 8 for placing samples.

[0053] The lower part of the test box is a box door 11, which is used for taking and placing samples. The left edge of the box door is a hinge or a rotating shaft, and the upper, lower and right edges are padded with silicone pads for sealing.

[0054] The middle position of the side of the box is the control port of the temperature and humidity controller, and is externally connected to the temperature and humidity controller 14.

[0055] The temperature and humidity controller is connected to the temperature and humidity actuator, and controls the action of the temperature and humidity actuator according to the required temperature and humidity requirements to change the temperature and humidity in the inner cavity. The specific structure of the temperature and humidity actuator is not limited. For example, a heater can be arranged in the hollow structure between the inner and outer cavities, and a fan can be arranged in the inner cavity. The heater is used to change the temperature in the inner cavity, and the fan is used to drive the gas flow in the inner cavity to change the humidity.

[0056] The test chamber can provide specific temperature, humidity, gas atmosphere, and gas flow rate environment for the slow-release flavor release experiment to meet the diverse experimental environment requirements.

[0057] The tail gas capture and absorption device 15 is filled with adsorption materials such as silicon dioxide, calcium sulfate, calcium chloride, activated carbon, molecular sieve, porous honeycomb ceramics, etc., which absorb water, organic gas molecules, etc. released by the absorption system to prevent the escaped gas from polluting the environment.

[0058] The above device was used to conduct an experiment on the effect of simulated environment on the release of aroma of slow-release flavors. The specific process is as follows:

[0059] 1. Open the gas cylinder (1) and adjust the gas cylinder pressure relief valve (2) to make the gas flow rate (6) reach the set flow rate;

[0060] 2. Adjust the temperature and humidity controller (14) so ​​that the temperature and humidity in the test chamber reach the required experimental values;

[0061] 3. After all experimental conditions are stable (about half an hour later), open the test chamber door (11), place the test sample (12) of the set mass on the sample tray (8) in the shortest possible time, and close the chamber door;

[0062] 4. According to the equilibrium time required by the experiment, after the test sample completes the equilibrium release in the test chamber, take out the sample, and then use thermal analysis, electronic nose method, gas chromatography / mass spectrometry, ultraviolet spectrophotometry, sensory evaluation method, etc. to analyze and compare the relevant indicators of the flavor before and after being placed in the simulation box to evaluate the sustained release effect or stability performance of the flavor.

[0063] During the experiment, the buffer box plays a role in mixing the gas evenly and buffering the gas, preventing the excessive gas flow rate from affecting the experiment; the test box has a heat preservation function, providing stable temperature and humidity, gas atmosphere and gas flow rate conditions for the release of slow-release flavors. The gas in the gas cylinder can be selected according to the experimental requirements, and commonly used ones are air, nitrogen, helium, oxygen, etc.

[0064] The simulated temperature, humidity, gas composition and flow rate are variables relative to the slow-release flavor. Each component in the above-mentioned device can realize the control of a single variable, which is conducive to mastering the release law reflected by the slow-release flavor under the influence of different environmental factors through multiple experiments.

[0065] The tail gas absorption device is installed at the tail of the device. The simulated gas can be captured and absorbed by the tail gas absorption device after the experiment, reducing the pollution of volatile gas to the experimental device, pipelines and environment, and improving the accuracy of the test results. When only simulating the influence of temperature and humidity, the simulation device with the above structure is used to reduce the pollution of volatile gas to the experimental device and pipelines.

[0066] For example, the aroma release effect of eugenol-β-cyclodextrin microspheres was evaluated.

[0067] 1. Draw the standard working curve of UV absorbance of eugenol-ethanol solution.

[0068] (1) Preparation of a series of eugenol-ethanol standard solutions: Take a set amount of eugenol and add it to ethanol to prepare ethanol solutions with eugenol concentrations of 5 μg / mL, 10 μg / mL, 15 μg / mL, 20 μg / mL, and 25 μg / mL, respectively.

[0069] (2) Add a series of standard solutions into a cuvette and scan them in the range of 220-350 nm using a UV spectrophotometer to obtain a UV absorption curve.

[0070] (3) Eugenol has the highest absorbance at 280 nm, so a standard working curve of absorbance-mass concentration of eugenol-ethanol solution at 280 nm was established, and the equation was y = 52.3625x, R 2 =0.999.

[0071] 2. Determination of eugenol content in eugenol-β-cyclodextrin microspheres.

[0072] (1) Dissolve 10 mg of eugenol-β-cyclodextrin microspheres in 50 ml of ethanol solution, perform ultrasonic extraction for 2 hours, centrifuge at 5000 r / min for 5 minutes, take the supernatant and filter it through a 0.45 μm filter membrane, then add it to a cuvette for UV absorbance detection.

[0073] (2) The absorbance of the eugenol-β-cyclodextrin microsphere ethanol solution at 280 nm was substituted into the standard working curve to obtain a eugenol content of 19.8 μg / mL in the microspheres.

[0074] 3. The release of eugenol-β-cyclodextrin microspheres was simulated under the conditions of 35°C, 60% relative humidity, and an air flow rate of 20 mL / min.

[0075] (1) Open the air cylinder and adjust the pressure reducing valve (2) so that the flow meter (6) reaches 20 mL / min.

[0076] (2) Adjust the temperature and humidity controller (14) so ​​that the temperature and humidity in the test box (7) reach 35°C and 60%.

[0077] (3) After the temperature and humidity in the test chamber are stable, open the test chamber door (11), place 1 g of eugenol-β-cyclodextrin microsphere sample on the sample tray 8, and close the chamber door.

[0078] (4) After the eugenol-β-cyclodextrin microspheres were equilibrated in the test chamber for 1 day, the microspheres were taken out and the eugenol content in the microspheres was detected by ultraviolet spectrophotometer using the method in step 2. The result was 18.2 μg / mL.

[0079] 4. Evaluation of aroma release of eugenol-β-cyclodextrin microspheres.

[0080] After one day of equilibrium at 35°C, 60% relative humidity, and an air flow rate of 20 mL / min, the eugenol content in the microspheres decreased from 19.8 μg / mL to 18.2 μg / mL, and the flavor retention rate was 91.9%.

[0081] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for simulating the effect of environment on the release of aroma of a slow-release flavor, characterized in that: It includes gas source, buffer box, test box and tail gas absorption device; The air source is connected to the buffer box through a first pipe, the buffer box is connected to the test box through a second pipe, the test box is connected to the tail gas absorption device through a third pipe, flow meters are provided on the first pipe and the second pipe, the test box has an outer cavity and an inner cavity which are connected inside and outside, an insulation layer is provided between the inner and outer cavities, the inner cavity is used to accommodate the slow-release flavor sample to be tested, and a temperature and humidity control unit is provided in the inner cavity.

2. A device for simulating the effect of environment on the release of aroma of a sustained-release flavor as claimed in claim 1, characterized in that: The gas source is a gas cylinder storing set gas, and a pressure reducing valve is provided at the outlet of the gas cylinder.

3. The device for simulating the effect of environment on the release of aroma of slow-release flavor as claimed in claim 1, characterized in that: The first pipeline is provided with a first flow meter, and the second pipeline is provided with a second flow meter.

4. The device for simulating the effect of environment on the release of aroma of slow-release essence as claimed in claim 1, characterized in that: One end of the first pipeline is connected to the gas source, and the other end passes through the sealing cover of the buffer box and extends into the interior of the buffer box.

5. The device for simulating the effect of environment on the release of aroma of slow-release essence as claimed in claim 1, characterized in that: After one end of the second pipe is led out from the inside of the buffer box, the other end passes through the sealing cover of the buffer box, the outer cavity and the inner cavity of the test box in sequence to reach the inside of the inner cavity of the test box.

6. The device for simulating the effect of environment on the release of aroma of slow-release flavor as claimed in claim 1, characterized in that: A sealing tube is provided at the position where the second pipeline passes through the outer cavity and the inner cavity, for accommodating the second pipeline to pass through and achieve sealing.

7. The device for simulating the effect of environment on the release of aroma of slow-release flavor as claimed in claim 1, characterized in that: One end of the third pipe is led out from the inner cavity of the test box, and the other end is connected to the tail gas absorption device.

8. The device for simulating the effect of environment on the release of aroma of slow-release flavor as claimed in claim 1, characterized in that: The heat-insulating layer between the inner and outer cavities of the test box is a hollow structure.

9. The device for simulating the effect of environment on the release of aroma of a slow-release flavor as claimed in claim 1, characterized in that: The temperature and humidity control unit includes a temperature and humidity sensor arranged in the inner cavity, a temperature and humidity controller connected to the temperature and humidity sensor and the temperature and humidity adjustment mechanism respectively, and a temperature and humidity display connected to the outer cavity.

10. The device for simulating the effect of environment on the release of aroma of slow-release essence as claimed in claim 9, characterized in that: The temperature and humidity regulating mechanism comprises a heater arranged between the inner and outer cavities of the test box, and a fan connected to the cavity wall of the inner cavity.

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