Airing method of yellowish-brown eggplant coating

Abstract

The invention discloses a method for airing yellowish-brown eggplant coats, and belongs to the technical field of tobacco processing. The air-curing method comprises the following steps: S1, placing mature tobacco leaf weaving rods in different air-curing areas in a standard air-curing room, arranging red light and blue light sources at the bottoms of mature tobacco leaves in the different air-curing areas, and then air-curing the mature tobacco leaves; s2, starting from the 3th-5th day after airing, turning on a red light source and a blue light source every day to supplement light, and stopping light supplement until the 20th-30th day after airing; continuously airing, and obtaining a yellowish-brown eggplant coat after the airing is finished; wherein in the step S2, the light intensity of the red light source is 2.5-7.5 mw / m < 2 > / nm, and the light intensity of the blue light source is 20-60 mw / m < 2 > / nm. The combined light sources with different intensities and light qualities are used for supplementing light in the airing process of the eggplant coating, so that the color of the eggplant coating is obviously lightened and is in typical yellowish brown, and the quality of the eggplant coating is obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco processing, and in particular relates to a method for air-drying yellow-brown eggplant wrappers. Background Art

[0002] The wrapper is the most important component of cigars and is also an external symbol of the quality and grade of cigars. Generally, the appearance quality and physical characteristics of the wrapper tobacco leaves are required to be high. High-quality wrappers require uniform color, thin leaves, flat leaf surface, good oil content, and good elasticity. At the same time, there are also special requirements for the depth of leaf color. From light to dark, the colors are divided into seven colors: green brown, yellow brown, light brown, medium brown, reddish brown, dark brown, and black brown, corresponding to cigar products of different styles and grades.

[0003] As an indispensable part of cigar tobacco production, the air-curing process greatly affects the intrinsic quality and appearance of tobacco leaves. The color of tobacco leaves is mainly formed during the air-curing stage. The main factors affecting leaf color are the various pigments in the leaves, mainly the following three types: chlorophyll, carotenoids and melanin. The chlorophyll degradation process during the air-curing process of tobacco leaves is directly reflected in the color change of the leaves. Fresh tobacco leaves are mainly composed of chlorophyll, with no or little melanin. As the air-curing process progresses, this type of chlorophyll gradually transforms into carotenoids and melanin, making the color of the tobacco leaves darker. The degree of chlorophyll conversion during the air-curing process, that is, the amount of melanin produced, determines the depth of the leaf color.

[0004] At present, the domestic technology for drying cigar wrappers mainly focuses on the temperature and humidity conditions during the drying period, and there is still a blank in the use of lighting technology to regulate the appearance color of cigar tobacco leaves. Summary of the invention

[0005] The purpose of the present invention is to provide a method for airing a yellow-brown cigar wrapper. In the present invention, during the airing process of the cigar wrapper, a combined light source of different intensities and light qualities is used for supplementary lighting to promote the conversion of chlorophyll into lutein, so that the color of the cigar wrapper after airing can be significantly lighter, presenting a typical yellow-brown color, and meeting the needs of cigar companies for light-colored cigar wrapper raw materials.

[0006] In a first aspect, the present invention provides a method for airing a yellow-brown aubergine wrapper, comprising the following steps: S1, placing mature tobacco leaf braids in different airing areas in a standard airing room, and setting a red light source and a blue light source at the bottom of the mature tobacco leaves in the different airing areas, and then airing the mature tobacco leaves; S2, starting from the 3rd to 5th day after the start of airing, turning on the red and blue light sources every day for supplementary light until the 20th to 30th day after the start of airing, then stopping the supplementary light; then continuing the airing, and obtaining a yellow-brown aubergine wrapper after the airing is completed; wherein, in step S2, the light intensity of the red light source is 2.5-7.5 mw / m 2 / nm, the light intensity of the blue light source is 20-60mw / m 2 / nm.

[0007] In the present invention, the inventors have found that during the drying process of the aubergine wrapper, by using a combination of red light and blue light with a specific light intensity to provide supplementary light during a specific period of the aubergine wrapper drying, the conversion of chlorophyll into lutein can be significantly promoted, and the color of the aubergine wrapper can be significantly lighter after drying, presenting a typical yellow-brown color.

[0008] In some embodiments, in step S1, the process of braiding mature tobacco leaves into rods specifically includes: selecting middle tobacco leaves of uniform maturity and position, using fixed rods to pass through the petioles of the middle tobacco leaves, each fixed rod having 35-40 middle tobacco leaves, and the distance between each middle tobacco leaf is 2-3 cm.

[0009] In the present invention, the number of middle tobacco leaves on each fixed rod and the distance between each middle tobacco leaf are controlled within a specific range, so that each tobacco leaf can be illuminated more evenly, and finally a yellow-brown wrapper with better performance can be obtained through drying.

[0010] In some embodiments, the fixing rod is a wire.

[0011] It is understandable that the fixing rod in the present invention can be conventionally selected according to actual use, and is preferably an iron wire.

[0012] In some embodiments, in step S1, the distance between the light emitting surfaces of the red light and blue light sources and the tip of the mature tobacco leaf is 0.8-1.2 m.

[0013] In the present invention, by controlling the distance between the light emitting surface of the red light and the blue light source and the tip of the mature tobacco leaf within a specific range, the tobacco leaf can be illuminated more evenly and fully, further improving the performance of the yellow-brown wrapper.

[0014] In some embodiments, the light emitting surfaces of the red light and blue light sources are 1 meter away from the tip of the mature tobacco leaf.

[0015] In some embodiments, in step S1, the red light source is a red LED light strip, and the blue light source is a blue LED light strip.

[0016] In the present invention, the LED light strip has faster heat dissipation performance, less power consumption, long life and simple operation, and has different light qualities, which is convenient for better installation.

[0017] In some embodiments, the red LED light strips and the blue LED light strips are arranged in parallel or crosswise.

[0018] It is understandable that the red LED light strip and the blue LED light strip can be conventionally arranged according to actual use conditions, as long as the tobacco leaves can be evenly illuminated. In the present invention, the red LED light strip and the blue LED light strip are preferably arranged in parallel or crosswise.

[0019] In some embodiments, in step S1, during the drying of mature tobacco leaves, the temperature in the standard drying room is controlled to be 20-30° C. and the relative humidity is controlled to be 70-90%.

[0020] In the present invention, by controlling the temperature and relative humidity in the standard air-drying room within a specific range, the tobacco leaves can be better air-dried and the quality of the tobacco leaves can be improved.

[0021] In some embodiments, in step S1, the exteriors of different drying areas in the standard air-drying room are shaded using a light-shielding breathable film with a light-shielding rate of 90-97%.

[0022] In the present invention, by using a light-shielding breathable film to shield light, it can be ensured that the moisture inside and outside the tobacco leaves can be exchanged in a dry-wet cycle.

[0023] In some embodiments, in step S2, the red light and blue light sources are turned on every day for supplementary lighting at night, and the supplementary lighting time is 9-12 hours.

[0024] In some embodiments, in step S2, the brightness value of the yellow-brown wrapper leaves increases by 16-25%, the red-green value decreases by 20-30%, the yellow-blue value decreases by 5-10%, and the chromaticity value decreases by 10-20%.

[0025] The beneficial effects of the present invention are as follows: different from the prior art, the present invention promotes the conversion of chlorophyll into lutein by using a combination of light sources of different intensities and light qualities to supplement light during the drying process of the cigar wrapper, so as to make the color of the cigar wrapper significantly lighter after drying, presenting a typical yellow-brown color, and significantly improving the quality of the cigar wrapper. In addition, the drying method of the present invention is simple, convenient for large-scale production, and can meet the needs of cigar companies for light-colored cigar wrapper raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Figure 1 is a morphological diagram of the cigar wrapper obtained by air-drying in Example 1 of the present invention, wherein AC are morphological diagrams of three types of cigar wrappers after air-drying respectively; Figure 2 1 is a morphological diagram of the cigar wrapper obtained by air-drying in Comparative Example 1 of the present invention, wherein AC are morphological diagrams of three types of cigar wrappers after air-drying. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The experimental methods without specific conditions in the examples are usually carried out according to conventional conditions and conditions described in the manual, or according to conditions recommended by the manufacturer. The general equipment, materials, reagents, etc. used are all available from commercial channels unless otherwise specified.

[0029] In the present invention, a GL SPECTIS5.0 touch spectrometer is used to detect the light environment.

[0030] Example 1 This implementation is to dry cigar wrapper tobacco leaves in Xintangping Village, Cuiba Town, Enshi City, Hubei Province in 2022. The cigar wrapper variety is CX-26, including the following steps: S1. Select middle tobacco leaves with the same maturity and position, use iron wire to pass through the petiole of the middle tobacco leaves, 38 middle tobacco leaves are passed through each iron wire, and the distance between each middle tobacco leaf is 2.5 cm, place the middle tobacco leaves in different air-drying areas in the standard air-drying room, and set a 5m long red LED light belt (5w (80 lamp beads) / m) and a 6m long blue LED light belt (5w (80 lamp beads) / m) at the bottom of the mature tobacco leaves in different air-drying areas. The red LED light belt and the blue LED light belt are arranged in parallel, and the luminous surface of the light belt is 1m vertically away from the tip of the tobacco leaf, and fixed with iron wire to ensure that the lighting position and light environment during the air-drying of the tobacco leaves are consistent. Use a light-shielding breathable film with a light-shielding rate of 95% to shade the outside of different air-drying areas in the standard air-drying room, and then dry the mature tobacco leaves; S2. Starting from the third day after the drying, turn on the red LED light strip and the blue LED light strip to supplement the light for 12 hours every night. During the supplementary light process, the light intensity of the red light strip is set to 2.5mw / m 2 / nm, the light intensity of the blue light strip is 20mw / m 2 / nm, until the 28th day after the start of air-drying, stop supplementing light; then continue air-drying, and after 40 days of air-drying, you will get a yellow-brown wrapper (the shape of the wrapper is as follows Figure 1 shown); Among them, during the process of drying mature tobacco leaves, the temperature in the standard drying room is 25°C and the relative humidity is 80%.

[0031] Example 2 In this implementation, the cigar wrapper tobacco leaves were dried in Wulongchi Village, Xijiadian Town, Danjiangkou City, Hubei Province in 2023. The cigar wrapper variety was CX-26, including the following steps: S1. Select middle tobacco leaves with the same maturity and position, use iron wire to pass through the petiole of the middle tobacco leaves, 38 middle tobacco leaves are passed through each iron wire, and the distance between each middle tobacco leaf is 2.5 cm, place the middle tobacco leaves in different air-drying areas in the standard air-drying room, and set a 10m long red LED light belt (5w (80 lamp beads) / m) and a 12m long blue LED light belt (5w (80 lamp beads) / m) at the bottom of the mature tobacco leaves in different air-drying areas. The red LED light belt and the blue LED light belt are arranged in parallel, and the luminous surface of the light belt is 1.2m vertically away from the tip of the tobacco leaf, and fixed with iron wire to ensure that the lighting position and light environment during the air-drying of the tobacco leaves are consistent. Use a light-shielding breathable film with a light-shielding rate of 95% to shade the outside of different air-drying areas in the standard air-drying room, and then air-dry the mature tobacco leaves; S2. Starting from the 5th day after the drying, turn on the red LED light strip and the blue LED light strip to supplement the light for 9 hours every night. During the supplementary light process, the light intensity of the red light strip light source is 5mw / m 2 / nm, the light intensity of the blue light source is 40mw / m 2 / nm, until the 25th day after the start of air-drying, stop supplementing light; then continue air-drying, and after 40 days of air-drying, obtain a yellow-brown wrapper; Among them, during the process of drying mature tobacco leaves, the temperature in the standard drying room is 25°C and the relative humidity is 80%.

[0032] Example 3 This implementation is to dry cigar wrapper tobacco leaves in Xintangping Village, Cuiba Town, Enshi City, Hubei Province in 2022. The cigar wrapper variety is CX-26, including the following steps: S1. Select middle tobacco leaves with the same maturity and position, use iron wire to pass through the petiole of the middle tobacco leaves, 38 middle tobacco leaves are passed through each iron wire, and the distance between each middle tobacco leaf is 2.5 cm, place the middle tobacco leaves in different air-drying areas in the standard air-drying room, and set a 15m long red LED light belt (5w (80 lamp beads) / m) and a 15m long blue LED light belt (5w (80 lamp beads) / m) at the bottom of the mature tobacco leaves in different air-drying areas. The red LED light belt and the blue LED light belt are arranged in parallel, and the luminous surface of the light belt is 1m vertically away from the tip of the tobacco leaf, and fixed with iron wire to ensure that the lighting position and light environment during the air-drying of the tobacco leaves are consistent. Use a light-shielding breathable film with a light-shielding rate of 95% to shade the outside of different air-drying areas in the standard air-drying room, and then air-dry the mature tobacco leaves; S2. Starting from the 4th day after the drying, turn on the red LED light strip and the blue LED light strip to supplement the light for 10 hours every night. During the supplementary light process, the light intensity of the red light strip is set to 7.5mw / m 2 / nm, the light intensity of the blue light strip is 60mw / m 2 / nm, until the 23rd day after the start of air-drying, stop supplementing light; then continue air-drying, and after 40 days of air-drying, obtain a yellow-brown wrapper; Among them, during the process of drying mature tobacco leaves, the temperature in the standard drying room is 25°C and the relative humidity is 80%.

[0033] Comparative Example 1 In this comparative example, cigar wrapper tobacco leaves were air-dried in Xintangping Village, Cuiba Town, Enshi City, Hubei Province in 2022. The cigar wrapper variety was CX-26. The air-dried method was basically the same as that in Example 1, except that in step S2, no supplementary light was performed during the entire air-dried process from the beginning of the air-dried process to 40 days after the air-dried process, and a medium brown wrapper (the wrapper morphology was as follows) was obtained. Figure 2 shown); Among them, during the process of drying mature tobacco leaves, the temperature in the standard drying room is 25°C and the relative humidity is 80%.

[0034] Comparative Example 2 In this comparative example, cigar wrapper tobacco leaves were air-dried in Wulongchi Village, Xijiadian Town, Danjiangkou City, Hubei Province in 2023. The cigar wrapper variety was CX-26. The air-dried method was basically the same as that in Example 2, except that in step S2, from the beginning of air-dried to 40 days after air-dried, no supplementary light was performed during the entire air-dried process, and a medium brown wrapper was obtained; Among them, during the process of drying mature tobacco leaves, the temperature in the standard drying room is 25°C and the relative humidity is 80%.

[0035] Comparative Example 3 In this comparative example, cigar wrapper tobacco leaves were air-dried in Xintangping Village, Cuiba Town, Enshi City, Hubei Province in 2022. The cigar wrapper variety was CX-26. The air-dried method was basically the same as that in Example 3, except that in step S2, from the beginning of air-dried to 40 days after air-dried, no supplementary light was performed during the entire air-dried process, and a medium brown wrapper was obtained; Among them, during the process of drying mature tobacco leaves, the temperature in the standard drying room is 25°C and the relative humidity is 80%.

[0036] Performance Testing According to the Hubei Provincial Standard "Cigar Tobacco Leaf Grade Quality Specification" DB 42 / T 1549-2020, the tobacco leaf quality and quality grade of the cigar wrappers obtained by air-drying in Examples 1-3 and Comparative Examples 1-3 were measured respectively, and the results are shown in Table 1 below.

[0037] Table 1 Tobacco leaf quality and quality test results of wrapper

[0038] It can be seen from Table 1 that, compared with Comparative Examples 1-3, Examples 1-3 of the present invention use a combination of light sources with different intensities and light qualities for supplementary lighting, which can significantly lighten the color of the aubergine wrapper after drying, presenting a typical yellow-brown color, thereby significantly improving the quality of the aubergine wrapper.

[0039] Furthermore, the brightness values ​​of the wrapper tobacco leaves obtained by air-drying in Examples 1-3 and Comparative Examples 1-3 were measured using an Xrite colorimeter. , red and green values , yellow-blue value , and calculated the color difference value E, referring to the determination method of Gao Yabei et al. (Gao Yabei, Zhong Qiu, Wang Songfeng, et al. Changes in tobacco leaf color and moisture content during cigar wrapper drying and their correlation analysis [J / OL]. Chinese Tobacco Science, 2019, 40(2): 57-63+72.), and the results are shown in Table 2 below.

[0040] Table 2 Color parameters of cigar wrapper after drying

[0041] As can be seen from Table 2, the data in Example 1 and Comparative Example 1 were calculated, and it was found that the brightness value of the wrapper tobacco leaves in Example 1 increased by 22.3%, the red-green value decreased by 28.8%, the yellow-blue value decreased by 5.2%, the chromaticity value E decreased by 15.0%, and the color became significantly lighter, showing a typical yellow-brown color; the data in Example 2 and Comparative Example 2 were calculated, and it was found that the brightness value of the wrapper tobacco leaves in Example 2 increased by 16.8%, the red-green value decreased by 28.9%, the yellow-blue value decreased by 7.1%, the chromaticity value E decreased by 11.6%, and the color The color of the aubergine tobacco leaves significantly lightened and presented a typical yellow-brown color. The data in Example 3 and Comparative Example 3 were calculated, and it was found that the brightness value of the aubergine tobacco leaves in Example 3 increased by 17.2%, the red-green value decreased by 21.6%, the yellow-blue value decreased by 9.4%, and the chromaticity value E decreased by 12.5%. The color significantly lightened and presented a typical yellow-brown color. The above results show that in Examples 1-3 of the present invention, a combined light source of different intensities and light qualities is used for supplementary lighting to promote the conversion of chlorophyll into lutein, which can make the color of the aubergine tobacco leaves significantly lighter after airing and present a typical yellow-brown color.

[0042] In summary, in the present invention, during the drying process of the aubergine wrapper, a combination of light sources with different intensities and light qualities is used for supplementary lighting to promote the conversion of chlorophyll into lutein, which can significantly lighten the color of the aubergine wrapper after drying and present a typical yellow-brown color, thereby significantly improving the quality of the aubergine wrapper.

[0043] It should be noted that the above embodiments all belong to the same inventive concept, and the description of each embodiment has its own focus. For details not described in individual embodiments, reference may be made to the description in other embodiments.

[0044] The above-mentioned embodiments only express the implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for drying a yellow-brown eggplant wrapper, characterized in that: The steps include: S1, placing the mature tobacco leaves in different air-drying areas in a standard air-drying room, setting a red light source and a blue light source at the bottom of the mature tobacco leaves in different air-drying areas, and then air-drying the mature tobacco leaves; S2, starting from the 3rd to 5th day after the start of air-drying, turning on the red light and blue light sources for supplementary lighting every day until the 20th to 30th day after the start of air-drying, then stopping the supplementary lighting; then continuing air-drying, and obtaining a yellow-brown wrapper after the air-drying is completed; Wherein, in step S2, the light intensity of the red light source is 2.5-7.5mw / m 2 / nm, the light intensity of the blue light source is 20-60mw / m 2 / nm.

2. The method for drying yellow-brown eggplant wrapper according to claim 1, characterized in that: In step S1, the mature tobacco leaf braiding specifically includes: selecting middle tobacco leaves of the same maturity and position, using fixed rods to pass through the petioles of the middle tobacco leaves, each fixed rod is passed through 35-40 pieces of middle tobacco leaves, and the distance between each piece of middle tobacco leaves is 2-3cm.

3. The method for air-drying yellow-brown eggplant wrapper according to claim 2, characterized in that: The fixing rod is an iron wire.

4. The method for air-drying yellow-brown eggplant wrapper according to claim 1, characterized in that: In step S1, the distance between the light emitting surfaces of the red light and blue light sources and the tip of the mature tobacco leaf is 0.8-1.2 m.

5. The method for air-drying yellow-brown eggplant wrapper according to claim 4, characterized in that: The distance between the light emitting surfaces of the red light and blue light sources and the tip of the mature tobacco leaf is 1 meter.

6. The method for air-drying yellow-brown eggplant wrapper according to claim 1, characterized in that: In step S1, the red light source is a red LED light strip, and the blue light source is a blue LED light strip.

7. The method for air-drying yellow-brown eggplant wrapper according to claim 6, characterized in that: The red LED light strip and the blue LED light strip are arranged in parallel or crosswise.

8. The method for air-drying yellow-brown eggplant wrapper according to claim 1, characterized in that: In step S1, during the drying of the mature tobacco leaves, the temperature in the standard drying room is controlled to be 20-30° C. and the relative humidity is controlled to be 70-90%.

9. The method for air-drying yellow-brown eggplant wrapper according to claim 1, characterized in that: In step S2, the red light and blue light sources are turned on every day to provide supplementary lighting at night, and the supplementary lighting time is 9-12 hours.

10. The method for air-drying yellow-brown eggplant wrapper according to claim 1, characterized in that: In step S2, the brightness value of the yellow-brown wrapper leaves increases by 16-25%, the red-green value decreases by 20-30%, the yellow-blue value decreases by 5-10%, and the chromaticity value decreases by 10-20%.

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