Method for tracing flue-cured tobacco lamina according to conventional chemical component content analysis of flue-cured tobacco lamina

Abstract

The invention provides a method for tracing tobacco lamina according to conventional chemical component content analysis of the tobacco lamina, and belongs to the technical field of tobacco treatment. The method comprises a tobacco leaf threshing method, a tobacco leaf location division method and a tobacco strip tracing method, and conventional chemical component index content determination is carried out on fragments, fragments, small pieces, middle pieces and large pieces obtained after tobacco leaf threshing and fourteen-location tobacco strips obtained after tobacco leaf location division; performing clustering analysis according to an obtained result; and according to a clustering analysis result, determining a corresponding relationship between the fragments, fragments, small pieces, middle pieces and large pieces obtained after tobacco leaf threshing and fourteen-location tobacco laminas obtained after tobacco leaf location division, so as to determine the positions of the tobacco laminas obtained after tobacco leaf threshing in the tobacco leaves. The method can quickly and accurately judge the position of the to-be-detected tobacco lamina in the tobacco leaves, and provides technical support for classification and efficient utilization of the tobacco lamina.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and in particular to a method for tracing the origin of tobacco leaves based on the analysis of the content of conventional chemical components. Background Technology

[0002] With the continuous upgrading of cigarette brand structure, the contradiction between the brand structure and the tobacco supply structure has become increasingly prominent, especially with the strong demand for high-quality tobacco from certain specialty producing areas, particularly top-grade and premium-grade tobacco. However, in the tobacco production stage, the proportion of top-grade tobacco has already reached about 70%, and further increases are no longer in line with the laws of agricultural development; the tobacco supply structure has reached its limit. Currently, industrial enterprises and re-drying enterprises have achieved technological maturity in fine classification, precise cutting, and precise use, and research results have been applied to raw tobacco formulation modules and cigarette brand leaf blend formulation development. However, 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 yet been fully and efficiently utilized.

[0003] Therefore, there is an urgent need in this field to provide a method for clustering the quality characteristic data of tobacco leaves from different locations with the quality characteristic data of tobacco leaves of different leaf types, to analyze the location of tobacco leaves of different leaf types after threshing, to clarify the reasons for the differences in the quality characteristics of tobacco leaves of different leaf types, and to provide a theoretical basis for the refinement of threshing parameters. 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 analysis of the content of conventional chemical components in tobacco leaves.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: This invention provides a method for tracing the origin of tobacco leaves based on the analysis of conventional chemical components, including a tobacco leaf threshing method, a tobacco leaf location division method, and a tobacco leaf origin tracing method; The tobacco leaf threshing method includes the following steps: (1) The tobacco leaves are passed through a leaf-beating machine with an opening size of 3-4" diamond-shaped frame for the first stage of leaf beating. The speed of the beating roller is 400~500 r / min. The mixture of leaf and stem formed after leaf beating is air-separated to obtain qualified air-separated tobacco leaves and unseparated tobacco leaves containing stems 1. (2) The unseparated tobacco mixture 1 obtained in step (1) is subjected to secondary leaf blasting by a leaf blasting machine with an opening size of 2.5-3" diamond frame, and the blasting roller speed is 600~700r / min. The leaf and stem mixture formed after leaf blasting is air-separated to obtain qualified tobacco and unseparated tobacco mixture 2. (3) The unseparated tobacco mixture 2 obtained in step (2) is subjected to three-stage leaf blasting by a leaf blasting machine with an opening size of 1-2.5" diamond frame and the blasting roller speed is 700~850r / min. The leaf and stem mixture formed after leaf blasting is air-separated to obtain qualified tobacco and unseparated tobacco mixture 3. (4) The unseparated tobacco mixture 3 obtained in step (3) is subjected to four-stage leaf blasting by a leaf blasting machine with a circular frame opening size of Φ40-60mm. The speed of the blasting roller is 800~1000r / min. The leaf and stem mixture formed after leaf blasting is then air-separated to achieve leaf and stem separation. (5) The tobacco flakes obtained after each level of leaf beating and air separation are screened by a leaf structure screening machine to obtain fragments with a size of less than or equal to 2.36 mm, fragments with a size of greater than 2.36 mm and less than or equal to 6.35 mm, small flakes with a size of greater than 6.35 mm and less than or equal to 12.7 mm, medium flakes with a size of greater than 12.7 mm and less than or equal to 25.4 mm, and large flakes with a size of greater than 25.4 mm; The method for dividing tobacco leaves into regions is as follows: the tobacco leaf is divided into six segments along a direction perpendicular to the midrib, which are, from the morphological upper end to the morphological lower end, leaf tip, near leaf tip, upper middle leaf, lower middle leaf, near leaf base, and leaf base; then the near leaf tip, upper middle leaf, lower middle leaf, and near leaf base segments are each divided into five segments along a direction parallel to the midrib; a total of fourteen regions of tobacco leaves are obtained. The method for tracing the source of tobacco flakes includes the following steps: (a) The content of conventional chemical components in the dust, fragments, small pieces, medium pieces and large pieces of tobacco obtained after threshing, as well as the tobacco leaf pieces obtained after the fourteen-region classification, were determined. (b) Perform cluster analysis based on the results obtained in step (a); (c) Based on the cluster analysis results of step (b), determine the correspondence between the fragments, small pieces, medium pieces and large pieces obtained after threshing the tobacco leaves and the fourteen locational tobacco pieces obtained after the tobacco leaf location division, thereby determining the position of the tobacco pieces obtained after threshing in the tobacco leaf.

[0006] Preferably, the tobacco leaves are of the variety of China Tobacco 100 or Yunnan Tobacco 87; the tobacco leaves are first-cured tobacco leaves.

[0007] Preferably, the flow rate of tobacco leaves during the threshing process is 11,000~13,000 kg / h; the threshing machine is a horizontal threshing machine.

[0008] Preferably, the slicing is performed at equal intervals based on the length or width of the slicing region.

[0009] Preferably, the leaf tip, the middle of the upper leaf, the middle of the lower leaf, and the part near the leaf base are divided to obtain 20 tobacco leaves, among which two tobacco leaves that are symmetrical about the midrib axis are tobacco leaves from the same location.

[0010] Preferably, the obtained tobacco flakes from the fourteen regions are sorted and stored after the midrib is removed.

[0011] Preferably, the conventional chemical composition indicators include the content of protein, starch, reducing sugar, potassium, chlorine, nicotine, total nitrogen, and total sugar.

[0012] Preferably, the cluster analysis employs the inter-group linkage method.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a method for tracing the origin of tobacco leaves based on the analysis of conventional chemical components. The tobacco leaves are sieved to obtain tobacco leaves with different leaf structures; simultaneously, the tobacco leaves are divided into regions to obtain tobacco leaves from different locations; then, conventional chemical component indicators are measured and cluster analysis is performed on tobacco leaves with different leaf structures and tobacco leaves from different locations to obtain the cluster analysis results of conventional chemical components for tobacco leaves with different leaf structures and tobacco leaves from different locations; based on the cluster analysis results, the location of tobacco leaves with different leaf structures within the tobacco leaf can be determined.

[0014] The method of this invention can quickly and accurately determine the position of the tobacco leaf to be tested in the tobacco leaf, providing technical support for the classification and efficient utilization of tobacco leaves. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the fourteen-region segmentation in Example 2; Figure 2 The results of protein content determination in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 3 The results of starch content determination in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 4 The results of the determination of reducing sugar content in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 5 The results of potassium content determination in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 6The results of chlorine content determination in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 7 The results of the determination of nicotine content in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 8 The results of total nitrogen content determination in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 9 The results of the determination of total sugar content in tobacco leaves from different locations and with different leaf structures in the Sanmenxia area in Example 3; Figure 10 The results of protein content determination in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 11 The results of starch content determination in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 12 The results of the determination of reducing sugar content in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 13 The results of potassium content determination in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 14 The results of chlorine content determination in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 15 The results of the determination of nicotine content in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 16 The results of the determination of total nitrogen content in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 17 The results of the determination of total sugar content in tobacco leaves from different locations and with different leaf structures in Xuchang area in Example 3; Figure 18 The results of cluster analysis of conventional chemical components of tobacco leaves from the Sanmenxia production area in Example 3; Figure 19 The results of cluster analysis of conventional chemical components of tobacco leaves from the Xuchang production area in Example 3 are shown. Detailed Implementation

[0017] 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.

[0018] Example 1

[0019] A method for threshing tobacco leaves, the steps of which are as follows: (1) The tobacco leaves from Sanmenxia (Yunyan 87) and Xuchang (Zhongyan 100) are fed into the horizontal leaf threshing machine at a flow rate of 12000 kg / h for the first stage of leaf threshing. The speed of the threshing roller is 450 r / min and the opening size is 3-4" diamond frame. The mixture of leaf and stem formed after leaf threshing is conveyed to the air separator by a high-speed belt. The qualified tobacco leaves (qualified tobacco leaves are those that can be used in cigarettes; unqualified tobacco leaves are tobacco leaves containing stems and mixtures) are separated by air separation. The mixture of tobacco leaves containing stems that is not separated by air separation is conveyed to the next stage of leaf threshing by belt.

[0020] (2) The unseparated stem-containing tobacco mixture 1 obtained in step (1) is evenly fed into the horizontal leaf-beating machine at a flow rate of 12000 kg / h for secondary leaf-beating. The speed of the beating roller is 650 r / min and the opening size is 2.5-3" diamond frame. The leaf-stem mixture formed after leaf-beating is conveyed to the air separator via a high-speed belt. The qualified tobacco is separated by air separation. The unseparated stem-containing tobacco mixture 2 is sent to the next stage of leaf-beating via a belt.

[0021] (3) The unseparated stem-containing tobacco mixture 2 obtained in step (2) is evenly fed into the horizontal leaf-beating machine at a flow rate of 12000 kg / h for three-stage leaf-beating. The beating roller speed is 800 r / min and the opening size is 1-2.5" diamond frame. The leaf-stem mixture formed after leaf-beating is conveyed to the air separator via a high-speed belt. The qualified tobacco is separated by air separation. The unseparated stem-containing tobacco mixture 2 is sent to the next stage of leaf-beating via a belt.

[0022] (4) The unseparated tobacco mixture 2 obtained in step (3) is fed into a horizontal leaf-beating machine at a flow rate of 12000 kg / h for four-stage leaf beating. The beating roller speed is 900 r / min and the opening size is Φ40-60 mm circular frame. The leaf and stem mixture formed after leaf beating is conveyed to the air separator via a high-speed belt to achieve leaf and stem separation.

[0023] (5) After the above processing, the tobacco flakes obtained after leaf blasting and air separation at each level are conveyed to the next process via a belt. A certain amount of sample is taken at the conveyor belt collection point and screened by a leaf structure screening machine to obtain fragments with a size of less than or equal to 2.36 mm, fragments with a size greater than 2.36 mm and less than or equal to 6.35 mm, small flakes with a size greater than 6.35 mm and less than or equal to 12.7 mm, medium flakes with a size greater than 12.7 mm and less than or equal to 25.4 mm, and large flakes with a size greater than 25.4 mm.

[0024] Example 2

[0025] The tobacco leaves are divided into fourteen zones, as shown in the schematic diagram below. Figure 1 As shown, the specific method of segmentation is as follows: (1) Select 10 kg of intact and undamaged tobacco leaves from Sanmenxia (Yunyan 87) and Xuchang (Zhongyan 100), and cut them into five equal cuts along the direction perpendicular to the main vein to obtain six segments. From the upper morphological end to the lower morphological end, the segments are leaf tip, near leaf tip, upper leaf middle, lower leaf middle, near leaf base and leaf base. (2) Since the leaf base and leaf tip are relatively narrow, the leaf base and leaf tip are no longer subdivided. That is, the leaf base and leaf tip are each a tobacco sheet of one location, for a total of two tobacco sheets of one location. (3) Cut the near leaf tip, upper leaf middle, lower leaf middle and near leaf base into four equal cuts along the direction parallel to the main vein to obtain five segments; after this part is cut, 20 tobacco leaves are obtained. Among them, two tobacco leaves that are symmetrical about the main vein axis are defined as tobacco leaves in the same location, and a total of twelve tobacco leaves in different locations are obtained. (4) After removing the main veins from the tobacco leaves obtained in steps (2) and (3), the tobacco leaves are classified and stored in fourteen different locations.

[0026] Example 3

[0027] Routine chemical composition analysis was performed on tobacco leaves with different structural ratios obtained in Example 1 and tobacco leaves from different locations obtained in Example 2. The results of the determination of protein, starch, reducing sugar, potassium, chlorine, nicotine, total nitrogen, and total sugar content in tobacco leaves with different structural ratios and from different locations in the Sanmenxia production area are as follows: Figures 2-9 As shown, the results of the determination of protein, starch, reducing sugar, potassium, chlorine, nicotine, total nitrogen, and total sugar content in tobacco leaves with different structural ratios and from different locations in the Xuchang production area are as follows. Figures 10-17 As shown.

[0028] Cluster analysis was performed on the results of the determination of the content of conventional chemical components obtained above using the intergroup linkage method. SPSS software was used for the cluster analysis. The cluster analysis results of conventional chemical components in tobacco leaves from the Sanmenxia production area are as follows: Figure 18 As shown in the figure, the cluster analysis results of conventional chemical components of tobacco leaves from the Xuchang production area are as follows: Figure 19 As shown.

[0029] Depend on Figure 18 It can be seen that the chemical composition of tobacco leaves from the Sanmenxia production area, specifically those from zones 14 and 13, is similar to that of fragments; those from zones 8 and 5 are similar to medium-sized leaves; those from zones 7 and 10 are similar to small leaves; and those from zones 11, 12, 9, and 3 are similar to large leaves. Therefore, it can be determined that fragments obtained after threshing tobacco leaves from the Sanmenxia production area originate from zones 13 and 14, medium-sized leaves from zones 5 and 8, small leaves from zones 7 and 10, and large leaves from zones 3, 9, 11, and 12. The difference between fragments and zone 14 is significant; based on the graph, zones 13 and 14 are relatively closest to fragments.

[0030] Depend on Figure 19It can be seen that the conventional chemical composition of tobacco leaves from the Xuchang production area in zone 13 is similar to that of small leaves, the conventional chemical composition of tobacco leaves from zone 14 is similar to that of fragments, and the conventional chemical composition of tobacco leaves from zones 11, 9, 12, and 10 is similar to that of large and medium leaves. Therefore, it can be determined that the fragments obtained after threshing tobacco leaves from the Xuchang production area originate from zone 14, the small leaves from zone 13, and the large and medium leaves from zones 9, 10, 11, and 12.

[0031] As shown above, the location of the tested tobacco leaf within the tobacco leaf can be determined based on the cluster analysis results of conventional chemical components of tobacco leaves with different structural proportions and locations. The method of this invention can perform traceability analysis of the location of different tobacco leaf types, which is beneficial for improving the comprehensive utilization rate of tobacco leaves.

[0032] 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 content analysis of conventional chemical components, characterized in that, This includes methods for threshing tobacco leaves, methods for classifying tobacco leaf locations, and methods for tracing the origin of tobacco leaves; The tobacco leaf threshing method includes the following steps: (1) The tobacco leaves are passed through a leaf-beating machine with an opening size of 3-4" diamond-shaped frame for the first stage of leaf beating. The speed of the beating roller is 400~500 r / min. The mixture of leaf and stem formed after leaf beating is air-separated to obtain qualified air-separated tobacco leaves and unseparated tobacco leaves containing stems 1. (2) The unseparated tobacco mixture 1 obtained in step (1) is subjected to secondary leaf blasting by a leaf blasting machine with an opening size of 2.5-3" diamond frame, and the blasting roller speed is 600~700r / min. The leaf and stem mixture formed after leaf blasting is air-separated to obtain qualified tobacco and unseparated tobacco mixture 2. (3) The unseparated tobacco mixture 2 obtained in step (2) is subjected to three-stage leaf blasting by a leaf blasting machine with an opening size of 1-2.5" diamond frame and the blasting roller speed is 700~850r / min. The leaf and stem mixture formed after leaf blasting is air-separated to obtain qualified tobacco and unseparated tobacco mixture 3. (4) The unseparated tobacco mixture 3 obtained in step (3) is subjected to four-stage leaf blasting by a leaf blasting machine with a circular frame opening size of Φ40-60mm. The speed of the blasting roller is 800~1000r / min. The leaf and stem mixture formed after leaf blasting is then air-separated to achieve leaf and stem separation. (5) The tobacco flakes obtained after each level of leaf beating and air separation are screened by a leaf structure screening machine to obtain fragments with a size of less than or equal to 2.36 mm, fragments with a size of greater than 2.36 mm and less than or equal to 6.35 mm, small flakes with a size of greater than 6.35 mm and less than or equal to 12.7 mm, medium flakes with a size of greater than 12.7 mm and less than or equal to 25.4 mm, and large flakes with a size of greater than 25.4 mm; The method for dividing tobacco leaves into regions is as follows: the tobacco leaf is divided into six segments along a direction perpendicular to the midrib, which are, from the morphological upper end to the morphological lower end, leaf tip, near leaf tip, upper middle leaf, lower middle leaf, near leaf base, and leaf base; then the near leaf tip, upper middle leaf, lower middle leaf, and near leaf base segments are each divided into five segments along a direction parallel to the midrib; a total of fourteen regions of tobacco leaves are obtained. The method for tracing the source of tobacco flakes includes the following steps: (a) The content of conventional chemical components in the dust, fragments, small pieces, medium pieces and large pieces of tobacco obtained after threshing, as well as the tobacco leaf pieces obtained after the fourteen-region classification, were determined. (b) Perform cluster analysis based on the results obtained in step (a); (c) Based on the cluster analysis results of step (b), determine the correspondence between the fragments, small pieces, medium pieces and large pieces obtained after threshing the tobacco leaves and the fourteen locational tobacco pieces obtained after the tobacco leaf location division, thereby determining the position of the tobacco pieces obtained after threshing in the tobacco leaf.

2. The method as described in claim 1, characterized in that, The tobacco leaves are of varieties including China Tobacco 100 or Yunnan Tobacco 87; the tobacco leaves are first-cured tobacco leaves.

3. The method as described in claim 1, characterized in that, The flow rate of tobacco leaves during the threshing process is 11,000~13,000 kg / h; the threshing machine is a horizontal threshing machine.

4. The method as described in claim 1, characterized in that, The slicing process involves dividing the area at equal intervals based on its length or width.

5. The method as described in claim 1, characterized in that, The leaf tips, middle of the upper leaf, middle of the lower leaf, and near the leaf base were divided to obtain 20 tobacco flakes. Among them, the two tobacco flakes that are symmetrical about the midrib axis are tobacco flakes from the same location.

6. The method as described in claim 1, characterized in that, After removing the midribs from the obtained tobacco leaves from the fourteen different locations, they were sorted and stored.

7. The method as described in claim 1, characterized in that, The conventional chemical composition indicators include the content of protein, starch, reducing sugar, potassium, chlorine, nicotine, total nitrogen, and total sugar.

8. The method as described in claim 1, characterized in that, The cluster analysis employed the between-group linkage method.

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