CN111208071B - Method for judging color and quality of sheet tobacco raw material based on colorimetric plate - Google Patents

Abstract

The invention provides a method for determining the color and quality of cigarette raw materials based on a color comparison board, which includes: designing a color comparison board, dividing reference colors, assigning values to each reference color according to the quality of the reference color and the cigarette, and dividing the cigarettes into The color of the tobacco sample is compared with the color guide to obtain the quality score. The present invention achieves quantitative determination of the color and quality of tobacco leaves by dividing reference colors into tobacco leaves and assigning values, thereby effectively improving the accuracy of the determination.

Description

A method for determining the color and quality of cigarette raw materials based on color comparison boards

Technical field

The present invention relates to the field of tobacco leaf quality evaluation methods, and in particular to a method for determining the color and quality of tobacco raw materials based on a color comparison board.

Background technique

Cigarette flake raw materials are the basic raw materials for cigarette companies to produce cigarettes. Their quality and stability directly affect the quality and stability of cigarette products. After the raw materials of sheet tobacco are re-roasted, they need to be naturally aged in the warehouse for a period of time to make the aroma of the tobacco leaves more prominent, remove the green impurities, reduce the graininess of the smoke, increase the fineness of the smoke, reduce the irritation, and improve the quality of the sheet tobacco. The usability can satisfy the use of cigarette raw materials. The improvement of the quality of tobacco leaves after natural aging is generally manifested as: the color becomes darker and more uniform, the leaf surface is less sticky, the toughness and elasticity are increased, and the silk yield is increased during processing.

The raw materials of cigarettes are aged in the warehouse for 18-24 months (it varies depending on the storage area), which is a long time. Therefore, it is very necessary to track and inspect the quality of the raw materials of cigarettes. The inspection of the appearance quality of cigarette raw materials mainly includes: color and oil content, supplemented by moisture detection, in which changes in oil content and moisture content can be reflected in color changes.

Since inspectors have individual differences in color thresholds and difference thresholds, although different inspectors have consistent text descriptions of colors, their colors may still be different; or the text descriptions may be inconsistent, but their colors may also be consistent. Therefore, it is necessary to make a standard tobacco leaf color comparison board as a reference for color description, and it can even be further digitized to use numerical values to express the color status of raw tobacco sheets.

At present, the tobacco leaf raw materials purchased by cigarette companies are mainly orange, with some lemon-colored and a small amount of brown tobacco leaves, making it impossible to make an accurate determination.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects and shortcomings of the existing technology that cannot accurately determine the color and quality of tobacco leaves, and provide a method for determining the color and quality of tobacco raw materials based on a color comparison board. The present invention is mainly suitable for judging the color and quality of lemon-colored and orange-colored flake cigarettes.

The above objects of the present invention are achieved through the following technical solutions:

A method for determining the color and quality of cigarette raw materials based on a color comparison board, including: designing a color comparison board, dividing reference colors, assigning values to each reference color based on the quality of the reference color and the cigarette, and dividing the cigarette samples into The color is compared with the color guide to get a quality score.

In some embodiments of the present invention, when assigning values to each reference color, the higher the overall quality of the smoke, the higher the color assignment. Of course, the higher quality flakes can also be assigned a lower color value. In order to facilitate the judgment, it is preferable to assign a higher quality value to the flake color.

In some embodiments of the present invention, the colors on the color comparison board are divided into light lemon, lemon, light orange, orange, orange, light reddish brown, reddish brown, dark reddish brown, and light black. ,black.

In some embodiments of the invention, the assignment is as shown in the following table:

serial number Smoke color type Assign _Qi Color 1 light lemon color 2 Color 2 lemon 4 Color 3 light orange 5 Color 4 orange 6 Color 5 orange red 10 Color 6 light reddish brown 9 Color 7 Red-brown 8 Color 8 dark reddish brown 7 Color 9 light black 3 Color 10 black 1

Color assignments are not limited by the above table. For example, the highest-quality color orange can be assigned values such as 20, 30, 50, 100, etc., and the scores of other lower-quality colors gradually decrease.

In some embodiments of the present invention, when the color of the tobacco leaf is uniform, the overall color of the finished tobacco leaf is compared with the reference color of the color comparison card, and the quality score is determined based on the color comparison result.

In some embodiments of the present invention, when there is a difference in the color of the tobacco sheets, sampling is performed to determine the color type of each sample, and the percentage P _i of the tobacco leaves of each color type in the total sample mass is counted, and the assignment of each color type is recorded. The following formula is used to calculate the quality score of this box of cigarettes: Quality score of cigarette raw materials Q=Q ₁ ×P ₁ +Q ₂ ×P ₂ +Q ₃ ×Q ₃ +……+Q _i ×P _i , Q ₁ , Q ₂ , Q ₃ ... Q _i represent the quality score of each color type of cigarette, and P ₁ , P ₂ , P ₃ ... P _i represent the percentage of the corresponding color type's cigarette quality to the total sampled mass.

The invention has the following beneficial effects:

By dividing the cigarette into base colors and assigning values, the present invention realizes the quantitative determination of the comprehensive quality of the cigarette, effectively improving the accuracy of the determination. Furthermore, when there is a difference in the color of the cigarette, the quality score is calculated through a formula to realize the evaluation. Accurate evaluation of the overall quality of tobacco flakes.

Description of drawings

Figure 1 shows a schematic diagram of a color comparison plate according to Embodiment 1 of the present invention.

Figure 2 shows a schematic diagram of the normal distribution of cigarette quality and color type in Embodiment 1 of the present invention.

Figure 3 shows a schematic diagram of sampling in Embodiment 1 of the present invention.

Detailed ways

The present invention will be further described below with reference to specific examples, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in this technical field.

Unless otherwise stated, the reagents and materials used in the following examples were all commercially available.

Example 1

1. Color comparison board design

Figure 1 is the designed color guide, with a total of 10 basic colors, from left to right: light lemon, lemon, light orange, orange, orange, light reddish brown, reddish brown, dark reddish brown. Light black, black, its assignment is as shown in the table below.

serial number Smoke color type Assign _Qi Color 1 light lemon color 2 Color 2 lemon 4 Color 3 light orange 5 Color 4 orange 6 Color 5 orange red 10 Color 6 light reddish brown 9 Color 7 Red-brown 8 Color 8 dark reddish brown 7 Color 9 light black 3 Color 10 black 1

According to research, as shown in Figure 2, the quality of lemon and orange cigarettes obeys a normal distribution among the reference colors, that is, it obeys a normal distribution among the assigned scores.

2. The method for judging the quality of flake cigarettes is as follows:

Method 1): This method is suitable for boxed finished cigarettes with a relatively uniform color. Under natural light source (or standard light source), open the cigarette box, place the color comparison card on the surface of the finished tobacco leaf, compare the overall color of the finished tobacco leaf with the base color of the color comparison card, determine the color type based on the color comparison results, and obtain the corresponding quality Score.

Method 2): This method is suitable for boxed finished tobacco leaves with different colors. Open the tobacco leaf package, as shown in Figure 3, and extract 1kg of samples according to the five-point sampling method. According to the different colors, the extracted samples are classified according to the color guide method under natural light source (or standard light source). After classification, respectively Weigh the masses of cigarette flakes of different colors, calculate the proportion of cigarette flakes of the corresponding color, and record the corresponding scores. Then calculate the quality score of the cigarette according to the following formula, and then determine its quality status.

Formula: Quality score of raw materials for cigarette cigarettes = color assignment 1*proportion 1+color assignment 2*proportion 2+color assignment 3*proportion 3+...+color assignment 10*proportion 10, that is, flakes _Tobacco raw material _quality score Q=Q ₁ ×P ₁ +Q ₂ ×P ₂ +Q ₃ ×Q _{3 +} …… _{+ Q i} The quality score of the cigarette, P ₁ , P ₂ , P ₃ ...P _i , represents the percentage of the quality of the flake cigarette of the corresponding color type to the total sampled mass.

3. Data results

By screening the cigarettes in the cigarette box, the above 1-10 different color cigarette samples were screened out, and chemical routine testing, mainstream smoke aroma component detection and sensory quality evaluation were carried out. The obtained data are as follows:

1) Chemical routine testing data

Table 1 Chemical routine testing data of different color cigarettes

The percentages in Table 1 are all mass percentages.

Generally speaking, the sugar-alkali ratio of flue-cured tobacco from central China is within the range of 10-15%. The strength and concentration of the tobacco leaves are coordinated, the aroma quality is better, the quantity is sufficient, and the overall quality is better. It can be seen from Table 1 that the total sugar and reducing sugar contents of samples 3-8 are relatively high, and the sugar-alkali ratio is in the range of 10-14. Although the sugar-alkali ratio of samples 9-10 also reaches 10, the total nitrogen content is relatively high, resulting in obvious nitrogen gas and irritation, which makes the quality of the cigarettes poor.

2) Testing data of aroma-causing components in mainstream smoke

Table 2 Test data of mainstream smoke aroma components of different color cigarettes (μg/g)

The content of aroma-causing components in mainstream smoke can reflect the quality of cigarettes to a certain extent. It can be seen from the above table that samples 3-8 have higher contents of individual aroma-causing components than other samples, and the total content of aroma-causing components is also higher, so it reflects that the overall intrinsic quality of the cigarettes is better.

3) Sensory quality evaluation results

Table 3 Sensory quality evaluation data of different color cigarettes

sample name aroma quality Amount of aroma Miscellaneous gas Stimulate Aftertaste total score 1 4.0 5.0 4.0 5.0 4.5 4.525 2 4.5 5.5 4.0 5.0 5.0 4.875 3 5.0 6.0 5.0 5.5 5.5 5.475 4 5.5 6.0 5.0 5.5 5.5 5.575 5 5.5 6.5 6.0 5.5 6.0 6.025 6 6.0 6.5 5.0 6.0 6.0 5.975 7 5.5 6.5 5.0 5.5 6.0 5.825 8 5.0 6.5 5.0 5.0 5.5 5.600 9 4.5 5.5 3.5 4.5 4.5 4.650 10 4.0 5.0 3.5 4.0 4.0 4.250

Evaluation criteria: ① The full score for each individual indicator is 10 points. The better the quality characteristics of the indicator, the higher the score.

②The minimum scoring unit for each individual indicator is 0.5 points.

③Total score = aroma quality × 20% + aroma amount × 35% + miscellaneous gas × 20% + irritation × 10% + aftertaste × 15%.

It can be seen from Table 3 that samples 3-8 have good aroma quality, sufficient to relatively sufficient aroma quantity, and other indicators also perform well. The corresponding total score is above 5 points, and the overall quality is good.

In summary, the assessment method of the present invention can accurately determine the quality of cigarette slices and effectively improve the accuracy of cigarette quality assessment.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, etc. may be made without departing from the spirit and principles of the present invention. All simplifications should be equivalent substitutions, and are all included in the protection scope of the present invention.

Claims (2)

1. A method for determining the color and quality of cigarette raw materials based on a color comparison board, which is characterized by including: designing a color comparison board, dividing the reference colors, and assigning values to each reference color according to the quality of the reference color and the cigarette. , compare the color of the tobacco sample with the color guide to obtain the quality score; The colors on the color comparison board are divided into light lemon, lemon, light orange, orange, orange, light reddish brown, reddish brown, dark reddish brown, light black, and black; When assigning values to each reference color, the higher the comprehensive quality, the higher the color assignment of the cigarette; The assignment is as shown in the following table: ; This method is used for boxed finished cigarettes with uniform color. Under natural light source or standard light source, open the cigarette box, place the color comparison card on the surface of the finished tobacco leaf, and compare the overall color of the finished tobacco leaf with the base color of the color comparison card. , determine the color type according to the colorimetric results, and obtain the corresponding quality score according to the assignment of the corresponding color; By screening the cigarettes in the cigarette box, 10 different color cigarette samples were selected, namely: light lemon sample one, lemon sample two, light orange sample three, orange sample four, orange sample Sample 5, light reddish brown sample 6, reddish brown sample 7, dark reddish brown sample 8, light black sample 9, and black sample 10 were used for routine chemical testing, mainstream smoke aroma component testing and sensory quality. evaluate; Regarding chemical routine testing data: the sugar-alkali ratio of flue-cured tobacco in central China is in the range of 10-15%, the strength and concentration of the tobacco leaves are coordinated, the aroma quality is good, the quantity is sufficient, and the overall quality is good; the total sugars of samples three to eight The content of reducing sugar and reducing sugar is relatively high, and the sugar-base ratio is in the range of 10-14%. Although the sugar-base ratio of sample nine and sample ten also reaches 10%, their total nitrogen content is relatively high, resulting in nitrogen gas and irritation. The characteristics are obvious, which makes the quality of the cigarettes poor; Regarding the testing data of aroma-causing components in mainstream smoke: the content of aroma-causing components in mainstream smoke can reflect the quality of cigarettes to a certain extent. Samples three to eight have higher aroma-causing component contents than other samples. The total content of aroma-causing ingredients is also higher, which reflects the overall better intrinsic quality of the tobacco slices; Regarding the sensory quality evaluation data: Samples 3 to 8 have good aroma quality, sufficient to moderate aroma quantity, good miscellaneous smell, irritation, and aftertaste, and the overall quality is good. 2. A method for determining the color and quality of cigarette raw materials based on a color comparison board, which is characterized by including: designing a color comparison board, dividing the reference colors, and assigning values to each reference color based on the quality of the reference color and the cigarette. , compare the color of the tobacco sample with the color guide to obtain the quality score; The colors on the color comparison board are divided into light lemon, lemon, light orange, orange, orange, light reddish brown, reddish brown, dark reddish brown, light black, and black; When assigning values to each reference color, the higher the comprehensive quality, the higher the color assignment of the cigarette; The assignment is as shown in the following table: ; This method is used for boxed finished tobacco leaves with different colors. Open the tobacco leaf packaging and extract 1kg of samples according to the five-point sampling method. According to the different colors, the extracted samples are classified and classified according to the color guide method under natural light source or standard light source. After the classification is completed, weigh the masses of the cigarettes of different colors respectively, calculate the percentage P _i of the mass of the cigarettes of each color type in the total sampled mass, record the corresponding scores, and then calculate the quality score of the box of cigarettes according to the following formula : Quality score of cigarette raw materials Q=Q ₁ ×P ₁ + Q ₂ ×P ₂ + Q ₃ ×P ₃ +……+ Q _i ×P _i , Q ₁ , Q ₂ , Q ₃ … Q _i represent each color Quality scores of types of cigarettes, P ₁ , P ₂ , P ₃ ...P _i represent the percentage of the quality of cigarettes of the corresponding color type to the total sampled mass; By screening the cigarettes in the cigarette box, 10 different color cigarette samples were selected, namely: light lemon sample one, lemon sample two, light orange sample three, orange sample four, orange sample Sample 5, light reddish brown sample 6, reddish brown sample 7, dark reddish brown sample 8, light black sample 9, and black sample 10 were used for routine chemical testing, mainstream smoke aroma component testing and sensory quality. evaluate; Regarding chemical routine testing data: the sugar-alkali ratio of flue-cured tobacco in central China is in the range of 10-15%, the strength and concentration of the tobacco leaves are coordinated, the aroma quality is good, the quantity is sufficient, and the overall quality is good; the total sugars of samples three to eight The content of reducing sugar and reducing sugar is relatively high, and the sugar-base ratio is in the range of 10-14%. Although the sugar-base ratio of sample nine and sample ten also reaches 10%, their total nitrogen content is relatively high, resulting in nitrogen gas and irritation. The characteristics are obvious, which makes the quality of the cigarettes poor; Regarding the testing data of aroma-causing components in mainstream smoke: the content of aroma-causing components in mainstream smoke can reflect the quality of cigarettes to a certain extent. Samples three to eight have higher aroma-causing component contents than other samples. The total content of aroma-causing ingredients is also higher, which reflects the overall better intrinsic quality of the tobacco slices; Regarding the sensory quality evaluation data: Samples 3 to 8 have good aroma quality, sufficient to moderate aroma quantity, good miscellaneous smell, irritation, and aftertaste, and the overall quality is good.