A food fatty acid value pre-processing platform and processing method thereof

Abstract

The invention discloses a food fatty acid value pre-processing platform and a processing method thereof. The processing platform comprises a sample container, a filter, a liquid storage tube, a rotating disk, a transfer cup, a liquid crystal display screen, a distilled water container and an indicator container from left to right in sequence; the sample container, the filter and the liquid storage tube are sequentially connected to the transfer cup through a hose, the distilled water container and the indicator container are respectively connected to the transfer cup through a hose, the transfer cup is arranged on the upper end of the rotating disk, the liquid crystal display screen is respectively connected to the filter, the liquid storage tube, the rotating disk, the transfer cup, the distilled water container and the indicator container through a circuit; the fatty acid value of the sample is quickly dissolved by high-speed stirring, and the solution is directly extracted by the filter and a diaphragm pump, thereby saving a lot of time and work; the sample solution is extracted by the filter and the diaphragm pump, which improves the efficiency compared with the original slow filtration by gravity method.

Description

Technical Field

[0001] The invention relates to the field of grain fatty acid value pre-processing equipment, and in particular to a grain fatty acid value pre-processing platform and a processing method thereof. Background Art

[0002] The fatty acid value of grains is a measurement of the free fatty acid content in grains. The test result is expressed as the amount of potassium hydroxide required to neutralize the free fatty acids in 100g of grain samples. The change in fatty acid value reflects the degree of quality deterioration of rice and corn. Therefore, it is used as an indicator of the suitability of rice and corn in the national standard for grain storage judgment rules.

[0003] During the process of maturation, harvesting and storage of grains, their lipid components will undergo hydrolysis to produce free fatty acids due to the influence of endogenous enzymes and external factors such as temperature and humidity. External environmental factors such as insects, rodents, and mold will accelerate the hydrolysis reaction and increase the free fatty acid content. The international GB / T20569-2006 and GB / T20570-2015 respectively stipulate that fatty acid value is one of the indicators for objectively evaluating the storage quality of rice and corn.

[0004] The existing food fatty acid value pretreatment equipment has a complicated operation process and uses a lot of glassware, which results in a large amount of manual workload and working time in the whole process, reducing work efficiency. All sample pretreatment processes are unified organic solvent extraction, shaking, and filtering operations, which specifically have the following defects:

[0005] The extraction time is too long, which greatly reduces the efficiency of the extraction. After the extraction is completed, it needs to be manually transferred using filter paper and a burette, which is time-consuming and cumbersome. In this process, some grassroots personnel still lack the use of burettes, resulting in inaccurate pipetting, which directly affects the final experimental results. As a result, grassroots grain depots and grain and oil monitoring stations at all levels and other grain departments cannot obtain efficient and accurate test results when conducting large-scale sample testing.

[0006] Therefore, it is necessary to provide a grain fatty acid value pre-processing platform and a processing method thereof to solve the difficulties currently faced by the grain and oil departments in fatty acid value detection. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a grain fatty acid value pre-processing platform and a processing method thereof, which can accurately extract and pipette, thereby greatly improving the efficiency and accuracy of the entire detection results of fatty acid values ​​by the grain and oil department.

[0008] A food fatty acid value pre-processing platform, the processing platform comprises, from left to right, a sample container 1, a filter 2, a liquid storage tube 3, a rotating disk 4, a pipette cup 5, a liquid crystal display screen 6, a distilled water container 7 and an indicator container 8;

[0009] The sample container 1, the filter 2 and the liquid storage tube 3 are connected to the pipette cup 5 in sequence through a hose, the distilled water container 7 and the indicator container 8 are connected to the pipette cup 5 through a hose respectively, the pipette cup 5 is arranged on the upper end of the rotating disk 4, and the liquid crystal display screen 6 is electrically connected to the 1, the filter 2, the liquid storage tube 3, the rotating disk 4, the pipette cup 5, the distilled water container 7 and the indicator container 8 respectively.

[0010] Preferably, an internal diaphragm small water pump is provided between the filter 2 and the liquid storage tube 3, and an internal fluid pump is provided in the processing platform.

[0011] Preferably, the number of the sample containers 1 is two.

[0012] Preferably, the indicator in the indicator container 8 is a phenolphthalein indicator.

[0013] Preferably, the capacity of the distilled water container 7 is greater than 50 ml.

[0014] Preferably, the capacity of the pipette cup is greater than 25 ml.

[0015] A method for pre-processing fatty acid value of grains, the method is based on the above-mentioned grain fatty acid value pre-processing platform, and the method comprises the following steps:

[0016] S1, taking anhydrous ethanol sample solution in sample container 1;

[0017] S2, after fully stirring or shaking the anhydrous ethanol sample solution, the liquid is transported to the liquid storage tube 3 through the filter 2 and the internal diaphragm small water pump through the hose;

[0018] S3, through the internal fluid pump, first lubricate the tube with about 4 ml, and discharge it into the waste liquid tank, and move the rotating disk 4, and then extract 25 ml of liquid into the pipette cup 5;

[0019] S4, 50 ml of distilled water is added to the distilled water container 7 through a fluid pump, and a small amount of indicator in the indicator container 8 is also added to the sample solution.

[0020] Preferably, the number of the sample containers 1 is two, and S1 includes: taking two portions of anhydrous ethanol sample solutions from the two sample containers 1 .

[0021] Preferably, the indicator in the indicator container 8 is a phenolphthalein indicator.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a grain fatty acid value pretreatment platform and a treatment method thereof, which can process two samples at the same time, and only takes 2-3 minutes for high-speed stirring extraction. After the extraction is completed, the machine automatically extracts filtrate quickly, and quantitatively and accurately absorbs 25 ml of filtrate required for the experiment. When the filtrate is added to a designated sample test cup, the instrument automatically adds 50 ml of distilled water and a phenolphthalein indicator into the cup. The entire pretreatment takes about 10 minutes, and the work efficiency is greatly improved. There is no human intervention in the middle, which avoids human operation errors, greatly saves manpower and time, and greatly improves the work efficiency. The novel instrument is fast in the pretreatment of grain fatty acid values, and has great advantages over the traditional manual method when grain departments such as grassroots grain depots and grain and oil monitoring stations at all levels conduct large-scale sample detection, and well solves the problem faced by the current grain and oil departments in fatty acid value detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a structural schematic diagram of a food fatty acid value pre-processing platform of the present invention;

[0026] Explanation of the accompanying drawings: In the figure, 1-container; 2-filter; 3-liquid storage tube; 4-rotating disk; 5-pipette cup; 6-liquid crystal display; 7-distilled water container; 8-indicator container. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] In order to fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0029] This embodiment refers to Figure 1 , Figure 1The present invention is a structural schematic diagram of a food fatty acid value pretreatment platform. The food fatty acid value pretreatment platform shown in the figure includes a sample container 1, a filter 2, a liquid storage tube 3, a rotating disk 4, a transfer cup 5, a liquid crystal display screen 6, a distilled water container 7 and an indicator container 8 from left to right; the sample container 1, the filter 2 and the liquid storage tube 3 are sequentially connected to the transfer cup 5 through a hose, the distilled water container 7 and the indicator container 8 are respectively connected to the transfer cup 5 through a hose, the transfer cup 5 is arranged at the upper end of the rotating disk 4, the liquid crystal display screen 6 is respectively connected to the 1, the filter 2, the liquid storage tube 3, the rotating disk 4, the transfer cup 5, the distilled water container 7 and the indicator container 8 through a circuit, the liquid crystal display screen 6 is used for human-computer interaction, and has cleaning, pretreatment, and correction functions, the capacity of the distilled water container 7 is greater than 50ml, and the capacity of the transfer cup is greater than 25ml.

[0030] The present embodiment provides a method for pre-processing fatty acid values ​​of grains. The method is based on the above-mentioned grain fatty acid value pre-processing platform, and the method comprises the following steps: S1, taking anhydrous ethanol sample solution from a sample container 1; S2, after fully stirring or shaking the anhydrous ethanol sample solution, the liquid is transported to a liquid storage tube 3 through a hose via a filter 2 and an internal diaphragm small water pump; S3, firstly lubricate the tube with about 4 ml through an internal fluid pump, and discharge it into a waste liquid tank, and then move a rotating disk 4, and then extract 25 ml of the liquid into a pipette cup 5; S4, 50 ml of distilled water is added to the distilled water in the distilled water container 7 through a fluid pump, and a small amount of indicator in an indicator container 8 is also added to the sample solution.

[0031] Specifically, the sample container 1 is an anhydrous ethanol sample solution, and the quantity is two. Two samples are collected and placed in the two sample containers. After the collected anhydrous ethanol sample solution is stirred or shaken, the liquid is transported to the liquid storage tube 3 through a hose through a filter 2 and an internal diaphragm small water pump (in order to maintain the water level and pressure balance, it is first stored in the liquid storage tube), and then through the internal fluid pump, about 4 ml is first moistened in the tube and discharged into the waste liquid tank, and the rotating disk 4 is moved, and then 25 ml of liquid is extracted into the pipette cup 5; 50 ml of distilled water is added to the distilled water container 7 through the fluid pump, phenolphthalein indicator is added to the indicator container 8, and a small amount of 8 indicators are also added to the sample solution. In this embodiment, the touch LCD screen 6 is used for human-computer interaction and has the functions of cleaning, pretreatment and calibration.

[0032] The present embodiment is relative to the existing food fatty acid value pre-treatment platform, and its processing method aspect: it can handle 2 samples at the same time, and high-speed stirring extraction only needs 2-3 minutes, while the traditional method needs 10 minutes or 30 minutes. After the extraction is completed, the machine automatically extracts the filtrate quickly, and quantitatively and accurately draws the 25ml filtrate required for the experiment. And the traditional method needs to be manually filtered with filter paper and pipetted with a burette, which is slow and cumbersome to operate. Some grassroots experimenters are still lacking in the use of burettes, and inaccurate pipetting will directly affect the final experimental results. After the filtrate is added to the specified sample test cup, the instrument automatically adds 50ml distilled water and phenolphthalein indicator to the cup. Taking corn as an example, the entire pre-treatment required time is about 10 minutes, and the traditional method needs about 60 minutes, and the work efficiency has been greatly improved. There is no human intervention in the middle, which avoids personnel operation errors, greatly saves manpower and time, and greatly improves work efficiency. This new instrument is fast in pre-processing. Compared with the traditional manual method, it has great advantages for grassroots grain depots, grain and oil monitoring stations at all levels and other grain departments to conduct large-scale sample testing. It has effectively solved the problems currently faced by grain and oil departments in fatty acid value testing.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention with equivalents. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.

Claims

1. A food fatty acid value pre-processing platform, characterized in that: The pre-treatment platform comprises, from left to right, a sample container (1), a filter (2), a liquid storage tube (3), a rotating disk (4), a pipette cup (5), a liquid crystal display screen (6), a distilled water container (7) and an indicator container (8); The sample container (1), the filter (2) and the liquid storage tube (3) are connected to the pipette cup (5) in sequence through a hose, the distilled water container (7) and the indicator container (8) are connected to the pipette cup (5) through a hose, respectively, the pipette cup (5) is arranged on the upper end of the rotating disk (4), and the liquid crystal display screen (6) is electrically connected to the sample container (1), the filter (2), the liquid storage tube (3), the rotating disk (4), the pipette cup (5), the distilled water container (7) and the indicator container (8) respectively; An internal diaphragm small water pump is provided between the filter (2) and the liquid storage tube (3), and an internal fluid pump is provided in the pre-treatment platform; The method for pre-processing fatty acid value of grain based on the above-mentioned grain fatty acid value pre-processing platform comprises the following steps: S1, taking an absolute ethanol sample solution in a sample container (1); S2, after fully stirring or shaking the anhydrous ethanol sample solution, the liquid is transported to the liquid storage tube (3) through the filter (2) and the internal diaphragm small water pump through the hose; S3, through the internal fluid pump, first lubricate the tube with 4 ml, discharge it into the waste tank, move the rotating disk (4), and then extract 25 ml of liquid into the pipette cup (5); S4, 50 ml of distilled water is added to the distilled water container (7) through a fluid pump, and a small amount of indicator in the indicator container (8) is also added to the sample solution.

2. The food fatty acid value pre-processing platform according to claim 1, characterized in that: The number of the sample containers (1) is two.

3. The food fatty acid value pre-processing platform according to claim 1, characterized in that: The indicator in the indicator container (8) is a phenolphthalein indicator.

4. The food fatty acid value pre-processing platform according to claim 1, characterized in that: The capacity of the distilled water container (7) is greater than 50 ml.

5. The food fatty acid value pre-processing platform according to claim 1, characterized in that: The capacity of the pipetting cup (5) is greater than 25 ml.

6. The food fatty acid value pre-processing platform according to claim 1, characterized in that: The liquid crystal display screen (6) is a touch display screen.

7. The food fatty acid value pre-processing platform according to claim 1, characterized in that: In the processing method, the number of the sample containers (1) is two, and S1 is as follows: taking two portions of anhydrous ethanol sample solutions from the two sample containers (1).

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