Method for tracing source of tobacco lamina according to organic acid content of tobacco lamina and application
By conducting zoned detection and cluster analysis of tobacco leaves, the problem of low tobacco leaf utilization rate was solved, and refined management of tobacco leaf location and leaf type was achieved, thereby improving the utilization efficiency of tobacco leaves and the quality of cigarette products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAOFENG REDRYING FACTORY OF TIANCHANG INT TOBACCO CO LTD
- Filing Date
- 2026-04-02
- Publication Date
- 2026-05-01
AI Technical Summary
Existing technologies fail to effectively utilize the differences in organic acid content in different regions and leaf types of tobacco leaves, resulting in low tobacco leaf utilization and an inability to meet the needs of improving cigarette structure.
The tobacco leaves were divided into 14 regions, and the organic acid content of different regions and leaf types was detected. Cluster analysis was performed by gas chromatography to determine the location and leaf type of the tobacco leaf.
Quickly and accurately determine the location and shape of tobacco flakes within the tobacco leaf, improve the utilization rate of tobacco leaves, and provide technical support for refined leaf threshing and the improvement of cigarette product quality.
Smart Images
Figure CN121942941A_ABST
Abstract
Description
A method and application for tracing the origin of tobacco leaves based on the organic acid content. Technical Field
[0001] This invention relates to the field of tobacco processing technology, and in particular to a method and application for tracing the origin of tobacco leaves based on the organic acid content of the leaves. Background Technology
[0002] With the continuous upgrading of cigarette brand structure, the contradiction between cigarette brand structure and tobacco leaf supply structure has become increasingly prominent, especially the demand for high-grade and specialty tobacco from certain high-quality producing areas. However, in the tobacco leaf production stage, the proportion of high-grade tobacco has already reached about 70%, and further increases are no longer in line with the laws of agricultural development; the tobacco leaf supply structure has reached its limit. Regarding the industry's proposal to improve the utilization level of tobacco leaf resources, industrial enterprises are implementing a "simultaneous effort on both the supply and demand sides" of tobacco leaf raw materials. The industrial sector needs to deepen innovation in the integrated design of "raw tobacco—module—leaf blend" formulations, broadening the scope of raw material use. In the re-drying stage, the layout of re-drying resources needs to be continuously optimized, and efforts should be increased to move the formulation process forward to the re-drying stage. Following the principles of "deep understanding, full utilization, and system integration," the potential of tobacco leaves in the processing stage should be fully explored to ensure that tobacco leaves from different producing areas, grades, and departments are "appropriately used" and "value-for-money." Currently, enterprises have achieved technological maturity in fine classification, precise cutting, and precise use, and research results have been applied to the development of raw tobacco formulation modules and cigarette brand leaf blend formulations. However, judging from the application results, the raw materials still cannot meet the demands brought about by the upgrading of cigarette structure, and the utilization rate of tobacco raw materials has not been fully and efficiently utilized. Deepening the comprehensive utilization of tobacco leaves, improving the level of raw material security, and enhancing the core raw material security capabilities are key issues that have been addressed as major special projects.
[0003] Non-volatile organic acids in tobacco leaves can regulate the pH value of tobacco, neutralize alkaline substances produced in the tobacco, improve the aroma, make it more mellow, and increase the smoke concentration. Although these acids do not directly affect the aroma, they can indirectly affect the aroma by regulating the pH value. Volatile organic acids, due to their volatility, can directly enter the smoke and have a significant direct impact on the taste and aroma of tobacco. These acids can increase the acidity of the smoke, making the smoke taste sweet and pleasant. However, during the field growth period of flue-cured tobacco, due to the angle between the leaf and the stem, different areas of the same leaf receive different light conditions, resulting in different degrees of metabolism, transformation, and accumulation of internal substances in different areas of the same leaf. This ultimately leads to significant differences in the internal chemical composition and physical processing resistance of different areas of the same leaf. Currently, there are no reports on the distribution patterns of organic acids in different areas of tobacco leaves, or on tracing the source of tobacco leaves based on the analysis of organic acid content, thereby improving the utilization rate of tobacco leaves and the quality of cigarette products. Based on this, this invention is proposed. Summary of the Invention
[0004] The purpose of this invention is to provide a method for tracing the origin of tobacco leaves based on the organic acid content of tobacco leaves.
[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: The present invention provides a method for tracing the source of tobacco leaves based on the organic acid content of tobacco leaves, comprising the following steps: (1) dividing the tobacco leaves into 14 regions and detecting the organic acid content of different regions respectively; (2) threshing and wind-sorting the tobacco leaves to obtain tobacco leaves of different types; detecting the organic acid content of tobacco leaves of different types; (3) performing cluster analysis on the organic acid content in steps (1) and (2) to obtain the tracing results of the location of tobacco leaves of different types.
[0006] As a preferred embodiment, in step (1), the method for dividing the location is as follows: the tobacco leaf is divided into six segments along the direction perpendicular to the main vein, from the upper morphological end to the lower morphological end, namely leaf tip, near leaf tip, upper leaf middle, lower leaf middle, near leaf base and leaf base; then the obtained near leaf tip, upper leaf middle, lower leaf middle and near leaf base parts are divided into five segments along the direction parallel to the main vein, resulting in a total of 14 locations.
[0007] Preferably, in step (1), the tobacco leaves are first-cured tobacco leaves; the source of the tobacco leaves is Sanmenxia and / or Xuchang.
[0008] Preferably, step (2) includes large pieces, medium pieces, small pieces, fragments and shreds, wherein the length of large pieces is >25.4mm, the length of medium pieces is 12.7mm < 25.4mm, the length of small pieces is 6.35mm < 12.7mm, the length of fragments is 2.36mm < 6.35mm, and the length of shreds is ≤2.36mm.
[0009] Preferably, in steps (1) and (2), the organic acid independently includes one or more of the following: oxalic acid, malonic acid, γ-pentanone acid, succinic acid, malic acid, 2,4-heptadienoic acid, citric acid, hexadecanoic acid, heptadecanoic acid, oleic acid, linoleic acid, and octadecanoic acid.
[0010] Preferably, in steps (1) and (2), the detection method for the organic acid is gas chromatography.
[0011] This invention also provides the application of the method in tobacco leaf traceability.
[0012] The present invention also provides the application of the method in refined leaf trimming.
[0013] The present invention also provides the application of the method in improving the utilization rate of tobacco leaves.
[0014] The beneficial effects of this invention are as follows: This invention provides a method for tracing the origin of tobacco leaves based on the organic acid content of the tobacco leaves. This invention divides tobacco leaves into zones and wind-separates them to obtain tobacco leaves from different zones and different leaf types. The organic acid content of tobacco leaves from different zones and different leaf types is detected separately, which can determine the differences in organic acid content between tobacco leaves from different zones and different leaf types. Then, cluster analysis is performed on the organic acid content data of tobacco leaves from different zones and tobacco leaves from different leaf types to analyze the location of tobacco leaves in which different leaf types of tobacco leaves are located.
[0015] The method of this invention can quickly and accurately determine the location of the tobacco flakes in the tobacco leaf, providing technical support for the classification and efficient utilization of tobacco flakes. This invention can clarify the location of tobacco flakes in the tobacco leaf and the differences in organic acid content of tobacco flakes in different locations and different flake types, laying the foundation for refined leaf threshing and improving the utilization rate of tobacco leaves. Attached Figure Description
[0016] Figure 1 is a schematic diagram of the 14 regional divisions; Figure 2 shows the results of the determination of total organic acid content in tobacco leaves from different regions and different types in Xuchang production area in Example 1; Figure 3 shows the cluster analysis results of total organic acid content in tobacco leaves from Xuchang production area in Example 1; Figure 4 shows the results of the determination of total organic acid content in tobacco leaves from different regions and different types in Sanmenxia production area in Example 2; Figure 5 shows the cluster analysis results of total organic acid content in tobacco leaves from Sanmenxia production area in Example 2. Detailed Implementation
[0017] This invention provides a method for tracing the source of tobacco leaves based on the organic acid content of tobacco leaves, comprising the following steps: (1) dividing the tobacco leaves into 14 regions and detecting the organic acid content of each region; (2) threshing and wind-sorting the tobacco leaves to obtain tobacco leaves of different types; detecting the organic acid content of tobacco leaves of different types; (3) performing cluster analysis on the organic acid content in steps (1) and (2) to obtain the tracing results of the leaf position of tobacco leaves of different types.
[0018] In this invention, in step (1), the method for dividing the locations is as follows: the tobacco leaf is divided into six segments along the direction perpendicular to the midrib, from the morphological upper end to the morphological lower end, namely leaf tip, near leaf tip, upper leaf middle, lower leaf middle, near leaf base and leaf base; then the obtained near leaf tip, upper leaf middle, lower leaf middle and near leaf base parts are divided into five segments along the direction parallel to the midrib, resulting in a total of 14 locations; the five segments are three locations near leaf margin, near leaf middle and near midrib, wherein the segments symmetrical on both sides with the midrib as the central axis are the same location; the width or length of the division is equidistant, and the specific division result is shown in Figure 1.
[0019] In this invention, in step (1), when detecting the organic acid content in different regions, the tobacco leaves need to be cut into 14 regions. After removing the main vein, the tobacco leaves in the 14 regions are classified and stored for testing. In order to ensure the representativeness of the test data, the weight of each region's tobacco leaf is ensured to be greater than 500g.
[0020] In this invention, in step (1), the tobacco leaves are first-cured tobacco leaves; the source of the tobacco leaves is Sanmenxia and / or Xuchang.
[0021] In this invention, in step (2), the sheet type includes large sheet, medium sheet, small sheet, fragment and powder, wherein the length of the large sheet is >25.4mm, the length of the medium sheet is 12.7mm < the length of the medium sheet is ≤25.4mm, the length of the small sheet is 6.35mm < the length of the small sheet is ≤12.7mm, the length of the fragment is 2.36mm < the length of the fragment is ≤6.35mm, and the length of the powder is ≤2.36mm.
[0022] In this invention, in step (2), when detecting different types of tobacco flakes, in order to ensure the representativeness of the detection data, the mass of different types of tobacco flakes must be greater than 500g.
[0023] In this invention, in steps (1) and (2), the organic acid independently includes one or more of the following: oxalic acid, malonic acid, γ-pentanone acid, succinic acid, malic acid, 2,4-heptadienoic acid, citric acid, hexadecanoic acid, heptadecanoic acid, oleic acid, linoleic acid, and octadecanoic acid.
[0024] In this invention, in steps (1) and (2), the detection method for the organic acid is independently gas chromatography analysis.
[0025] This invention also provides the application of the method in tobacco leaf traceability.
[0026] The present invention also provides the application of the method in refined leaf trimming.
[0027] The present invention also provides the application of the method in improving the utilization rate of tobacco leaves.
[0028] The technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.
[0029] Example 1: A method for tracing the origin of tobacco leaves based on the organic acid content of tobacco leaves.
[0030] (1) Take 10 kg of intact and undamaged tobacco leaves (China Tobacco 100) from the same batch from Xuchang production area and divide them into six segments at equal intervals along the direction perpendicular to the main vein. From the morphological upper end to the morphological lower end, the segments are leaf tip, near leaf tip, upper leaf middle, lower leaf middle, near leaf base, and leaf base. Then, divide the obtained near leaf tip, upper leaf middle, lower leaf middle, and near leaf base segments into five segments at equal intervals along the direction parallel to the main vein, resulting in a total of 14 regions. The five segments are three regions near leaf margin, near leaf middle, and near the main vein. Among them, the segments symmetrical on both sides of the near main vein are the same region. The tobacco was cut into 14 sections. To ensure the representativeness of the test data, the weight of each section of tobacco was ensured to be greater than 500g. After removing the main vein from the 14 sections of tobacco, they were classified and stored. The content of organic acids (oxalic acid, malonic acid, γ-pentanolic acid, succinic acid, malic acid, 2,4-heptadienoic acid, citric acid, hexadecanoic acid, heptadecanoic acid, oleic acid, linoleic acid, octadecanoic acid, and total amount) in each section was detected by gas chromatography. The test results of organic acid content are shown in Table 1 and Figure 2. (2) The whole and undamaged tobacco in the same batch was cut into sections of tobacco. Tobacco leaves from the Xuchang production area undergo threshing and air-sorting. Cross-sectional samples of 3 kg are taken from the sum of tobacco leaves at each threshing and air-sorting unit. These samples are then sieved and completely separated using a vibrating leaf sorter to obtain tobacco leaves of different shapes (where the length of large leaves is >25.4 mm, medium leaves is 12.7 mm < 25.4 mm, small leaves is 6.35 mm < 12.7 mm, fragments are 2.36 mm < 6.35 mm, and dust is ≤ 2.36 mm). The different shapes of tobacco leaves are then further processed... The tobacco leaves were stored separately, with each type of leaf weighing 500g. Gas chromatography was used to analyze the organic acid content (oxalic acid, malonic acid, γ-pentanoic acid, succinic acid, malic acid, 2,4-heptadienoic acid, citric acid, hexadecanoic acid, heptadecanoic acid, oleic acid, linoleic acid, octadecanoic acid, and total organic acid) of the same type of tobacco leaf. The results of the organic acid content analysis are shown in Table 2 and Figure 2. The specific steps of leaf threshing and air separation are as follows: 1) Tobacco leaves with a flow rate of 12000kg / h are evenly fed into the first stage of the horizontal leaf threshing machine via a feeder, with the threshing roller speed at 500... 1) The mixture of leaves and stems formed after beating is conveyed to the air separator via a high-speed belt. The qualified tobacco leaves are separated by the air separator, and the tobacco leaves containing stems that are not separated by the air separator are sent to the next stage of beating via the belt. 2) The mixture of leaves and stems formed after beating is evenly fed into the second stage of beating. The beating roller speed is 700 r / min, and the opening size is 2.5 r. After beating, the mixture of leaves and stems formed is conveyed to the air separator via a high-speed belt. The qualified tobacco leaves are separated by the air separator, and the tobacco leaves containing stems that are not separated by the air separator are sent to the next stage of beating via the belt. 3) The mixture of leaves and stems formed after beating is evenly fed into the third stage of beating. The beating roller speed is 850 r / min, and the opening size is 2.5 r.5. A diamond-shaped frame is used to separate qualified tobacco leaves after leaf pounding. The un-pounded tobacco leaves containing stems are conveyed to the next stage of leaf pounding via a high-speed belt. 4) The un-pounded mixture obtained in step 3) is evenly fed into the fourth stage of leaf pounding. The roller speed is 1000 r / min, and the opening size is Φ60 mm. A circular frame is used to separate the leaves and stems after leaf pounding via a high-speed belt. (3) Cluster analysis is performed on the organic acid content in steps (1) and (2). The cluster analysis results are shown in Figure 3, which shows the traceability results of the location of different types of tobacco leaves in the tobacco leaf.
[0031] Table 1. Organic acid content (mg / g) of tobacco leaves from different locations
[0032] Table 2 Organic acid content (mg / g) of different types of tobacco sheets
[0033] As shown in Figure 3, the organic acids in the leaves at positions 6, 9, 5, 10, 7, and 13 in the Xuchang production area are similar to those in the large leaf.
[0034] Example 2: A method for tracing the origin of tobacco leaves based on the organic acid content of tobacco leaves.
[0035] (1) Take 10 kg of intact, undamaged tobacco leaves (Yunyan 87) from the same batch from the Sanmenxia production area and divide them into six segments at equal intervals along the direction perpendicular to the midrib. From the morphological upper end to the morphological lower end, these segments are: leaf tip, near leaf tip, upper leaf middle, lower leaf middle, near leaf base, and leaf base. Then, divide the near leaf tip, upper leaf middle, lower leaf middle, and near leaf base segments at equal intervals along the direction parallel to the midrib, resulting in a total of 14 regions. The five segments are three regions: near leaf margin, near leaf middle, and near midrib. Among these, the segments symmetrical on both sides of the midrib are considered the same region. The tobacco was cut into 14 sections. To ensure the representativeness of the test data, the weight of each section of tobacco was ensured to be greater than 500g. After removing the main vein from the 14 sections of tobacco, they were classified and stored. The content of organic acids (oxalic acid, malonic acid, γ-pentanolic acid, succinic acid, malic acid, 2,4-heptadienoic acid, citric acid, hexadecanoic acid, heptadecanoic acid, oleic acid, linoleic acid, octadecanoic acid and total amount) in each section was detected by gas chromatography. The test results of organic acid content are shown in Table 3 and Figure 4. (2) The whole and undamaged Sanmenxia tobacco of the same batch was also tested. The tobacco leaves in the production area are crushed, and cross-sectional samples of 3 kg are taken at the collection point of the tobacco flakes from each level of leaf-threshing and sorting unit. The samples are then sieved and completely separated using a leaf vibration sorter to obtain tobacco flakes of different shapes (where the length of large flakes is >25.4 mm, medium flakes are 12.7 mm < 25.4 mm, small flakes are 6.35 mm < 12.7 mm, fragments are 2.36 mm < 6.35 mm, and dust is ≤ 2.36 mm). The tobacco flakes of different shapes are then classified and stored. The mass of each type of tobacco leaf is 500g. The organic acid content (oxalic acid, malonic acid, γ-pentanone acid, succinic acid, malic acid, 2,4-heptadienoic acid, citric acid, hexadecanoic acid, heptadecanoic acid, oleic acid, linoleic acid, octadecanoic acid and total amount) of the same type of tobacco leaf was detected by gas chromatography. The detection results of organic acid content are shown in Table 4 and Figure 4. (3) Cluster analysis was performed on all organic acid contents in steps (1) and (2). The cluster analysis results are shown in Figure 5. The source tracing results of the different types of tobacco leaves in the tobacco leaf were obtained.
[0036] Table 3. Organic acid content (mg / g) of tobacco leaves from different locations
[0037] Table 4 Organic acid content (mg / g) of different types of tobacco sheets
[0038] As can be seen from Figure 5, in the Sanmenxia production area, leaf positions 4, 6, 3, 12, 9, and 13 are similar to small organic acid flakes, leaf position 7 is similar to fragments and powders, leaf positions 8 and 11 are similar to large flakes, and leaf positions 2 and 14 are similar to medium flakes.
[0039] As can be seen from the above embodiments, the present invention provides a method and application for tracing tobacco leaves based on their organic acid content. The method of the present invention can quickly and accurately determine the location of the tobacco leaf to be tested within the tobacco leaf, providing technical support for the classification and efficient utilization of tobacco leaves. The present invention can clearly define the location of tobacco leaves within the tobacco leaf and the differences in organic acid content between tobacco leaves in different locations and with different leaf types, laying the foundation for refined leaf threshing and improving the utilization rate of tobacco leaves.
[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A method for tracing the origin of tobacco leaves based on the organic acid content of tobacco leaves, characterized in that, The steps include: (1) dividing the tobacco leaves into 14 regions and detecting the organic acid content in each region; (2) threshing and air-splitting the tobacco leaves to obtain different types of tobacco flakes; detecting the organic acid content in different types of tobacco flakes; (3) performing cluster analysis on the organic acid content in steps (1) and (2) to obtain the source results of the leaf position of different types of tobacco flakes in the tobacco leaves.
2. The method according to claim 1, characterized in that, In step (1), the method of dividing the location is as follows: the tobacco leaf is divided into six segments along the direction perpendicular to the main vein, from the upper morphological end to the lower morphological end, namely leaf tip, near leaf tip, upper leaf middle, lower leaf middle, near leaf base and leaf base; then the obtained near leaf tip, upper leaf middle, lower leaf middle and near leaf base parts are divided into five segments along the direction parallel to the main vein, resulting in a total of 14 locations.
3. The method according to claim 2, characterized in that, In step (1), the tobacco leaves are first-cured tobacco leaves; the source of the tobacco leaves is Sanmenxia and / or Xuchang.
4. The method according to claim 3, characterized in that, In step (2), the sheet types include large sheets, medium sheets, small sheets, fragments and powder, wherein the length of large sheets is >25.4mm, the length of medium sheets is 12.7mm < 25.4mm, the length of small sheets is 6.35mm < 12.7mm, the length of fragments is 2.36mm < 6.35mm, and the length of powder is ≤2.36mm.
5. The method according to claim 4, characterized in that, In steps (1) and (2), the organic acid independently includes one or more of the following: oxalic acid, malonic acid, γ-pentanone acid, succinic acid, malic acid, 2,4-heptadienoic acid, citric acid, hexadecanoic acid, heptadecanoic acid, oleic acid, linoleic acid, and octadecanoic acid.
6. The method according to claim 5, characterized in that, In steps (1) and (2), the detection method for the organic acid is gas chromatography.
7. The application of the method according to any one of claims 1 to 6 in the traceability of tobacco flakes.
8. The application of the method according to any one of claims 1 to 6 in refined leaf trimming.
9. The application of the method according to any one of claims 1 to 6 in improving the utilization rate of tobacco leaves.