CN112526078A - Method for measuring tobacco blending uniformity based on water content - Google Patents
Method for measuring tobacco blending uniformity based on water content Download PDFInfo
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- 241000208125 Nicotiana Species 0.000 title claims abstract description 112
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000002156 mixing Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 25
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 52
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 9
- 239000000047 product Substances 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000000391 smoking effect Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
Abstract
The invention belongs to the field of tobacco, and relates to a method for detecting blending uniformity of tobacco. Specifically, the invention relates to a method for measuring the blending uniformity of tobacco based on the moisture content of the tobacco. The method of the invention has the following advantages: (1) the detection method is simple; (2) the detection method is rapid; (3) the detection result is accurate. The method of the invention aims to provide reliable technical support for quality maintenance of cigarette products, and can also be used as a technical supplement of the current industry standard.
Description
Technical Field
The invention belongs to the field of tobacco, and relates to a method for detecting blending uniformity of tobacco. Specifically, the invention relates to a method for measuring the blending uniformity of tobacco based on the moisture content of the tobacco.
Background
The finished cut tobacco in cigarette products is usually made by mixing cut tobacco (such as cut tobacco leaves, cut stems, expanded cut tobacco and the like) with different components. The blending uniformity of the tobacco shreds of each component is the key for determining the quality and stability of the tobacco processing process and the quality consistency of cigarette products.
In the published patent "a method for measuring the mixing uniformity of cut tobacco of cigarette", "a method for measuring the mixing uniformity of mixed cut tobacco" and "a method for measuring the mixing proportion of expanded cut tobacco in cut tobacco", expanded cut tobacco is used as a marker to measure the mixing uniformity of cut tobacco of cigarette products. Separating the expanded tobacco shred from tobacco shred components by using organic solution such as cyclohexane, ethyl acetate or alcohol, liquid nitrogen and the like by utilizing the characteristic that the density of the expanded tobacco shred is less than that of other blending substances, and calculating the ratio of the expanded tobacco shred.
However, the solvent used for separating the expanded cut tobacco is volatile, has certain harm to operators, easily causes environmental pollution, has higher requirement on operation space, and has certain influence on the density and the separation effect of the solvent after the solvent is volatilized. In addition, the expanded cut tobacco is not used in all cigarette brands, and is used as a marker for measurement and calculation, so that all cigarette products cannot be covered, and the blending uniformity of all cigarette products cannot be measured.
Therefore, a new method for measuring the blending uniformity of tobacco components is needed.
Disclosure of Invention
The invention principle is as follows: the finished tobacco shred is prepared by blending tobacco shreds (such as cut tobacco leaves, cut stems, expanded tobacco shreds, etc.) of various components. After the tobacco shreds of each component are balanced under the same temperature and humidity conditions, the moisture content of the tobacco shreds of each component tends to be stable. According to the isothermal moisture absorption characteristic curve of each component of cut tobacco, the theoretical value of the water content of the component of cut tobacco under the specific environment temperature and humidity can be calculated, and then according to the blending proportion of each component of cut tobacco, the theoretical value of the water content of the finished cut tobacco can be calculated. Assuming uniform blending, the tobacco shreds of each component are distributed into cigarettes in proportion, and after the tobacco shreds are fully balanced under the same temperature and humidity conditions, the moisture content of each cigarette should tend to be consistent, and the moisture content value and the theoretical value of the moisture content of the finished tobacco shreds should tend to be consistent. Comparing the theoretical value with the actual value of the water content of the finished cut tobacco, and the deviation can be used as the basis for evaluating the mixing uniformity of the cut tobacco.
Firstly, sampling a certain brand of cigarette, and placing the cigarette sample under a specific environment temperature and humidity for balancing, wherein the balancing time is more than or equal to 48 hours, so that the moisture of the cut tobacco of the cigarette sample is balanced. Will be provided withThe balanced cigarettes are randomly grouped into 3 to 4 cigarettes each, and 30 cigarettes are grouped in total. The tobacco shreds in each group of cigarettes are peeled from the tobacco material to form 30 groups of tobacco shreds with weight of about 1.7g-2.3 g. Detecting the moisture content value of each group of tobacco shreds by a moisture meter, and recording the moisture content value H of each group1、H2、H3、H4、、、H30。
Secondly, calculating theoretical value H of moisture content of each component of tobacco shreds under the environmental temperature and humidity according to isothermal moisture absorption characteristic curve of each component of tobacco shreds (assumed to be composed of A, B, C components)A、HB、HC。
Obtaining theoretical moisture value H of the finished cut tobacco under the environment temperature and humidity according to the formula proportion of the cut tobacco in the finished cut tobacco (the proportion of the component A, the proportion of the component B, the proportion of the component C, and the proportion of a + B + C being 1), wherein the theoretical moisture value H is aHA*+b*HB+c*HC。
Thirdly, theoretical water content values H and H of finished tobacco shreds1、H2、H3、H4、、、H30The comparison is carried out separately,
s1＝|H-H1|/H、s2＝|H-H2|/H、s3＝|H-H3|/H、s4＝|H-H4|/H、、、s30＝|H-H30|/H
calculating the average value of the water content deviation S ═ S1+s2+s3+s4+、、、+s30)/30。
The mixing uniformity value F is 1-S. The mixing uniformity value is used as a basis for evaluating the mixing uniformity, and the larger the F value is, the better the mixing uniformity is.
In a first aspect of the present application, there is provided a method of determining the uniformity of tobacco compounding, the method comprising:
(1) balancing a plurality of cigarettes of the same tobacco sample at specific temperature and humidity, and measuring actual moisture content values H1, H2 and H3 … … Hx of the cigarettes;
(2) calculating theoretical water content values HA, HB, HC … … Hy of each component in the tobacco sample at the specific temperature and humidity;
(3) calculating a theoretical moisture content value H (%) of the tobacco sample, wherein H ═ first component ratio a × first component moisture content value HA + second component ratio b × second component moisture content value HB + third component ratio c × third component moisture content value HC … … + nth component ratio y × nth component moisture content value Hy, and wherein a + b + c … … + y ═ 100%;
(4) calculating an average value of the deviations S (%), S (S1+ S2+ S3+, + sx)/X, wherein S1 ═ H-H1|/H, S2 ═ H-H2|/H, S3 | -H3|/H … … sx ═ H-Hx |/H;
(5) the value of the mixing uniformity F (%) was calculated, F ═ 1-S.
In certain embodiments, wherein the uniformity of the tobacco sample is judged by F, the greater the F value, the better the uniformity of the tobacco sample.
In certain embodiments, wherein in step (1), further comprising: and (4) stripping the tobacco shreds of the cigarettes from the tobacco material, and measuring the actual moisture content value by using the tobacco shreds.
In certain embodiments, wherein in step (1), the actual moisture content value is measured using a moisture meter.
In certain embodiments, the moisture meter is a Mettler-Toriduo HB43-S halogen moisture meter.
In certain embodiments, in step (2), an isothermal moisture sorption characteristic curve is calculated for each component in the tobacco sample at the specified temperature and humidity, and from the isothermal moisture sorption characteristic curve, theoretical moisture content values are calculated for each component in the tobacco sample.
In certain embodiments, in step (2), the temperature is from 15 to 30 ℃ and the humidity is from 40% to 80% relative humidity.
In certain embodiments, the temperature is 20-25 ℃ and the humidity is 50% to 70% relative humidity.
Interpretation of terms
As used herein, the term "brand" refers to different brands of tobacco.
As used herein, the term "cigarette" refers to different individuals of cigarettes under the same brand. In general, different brands of cigarettes may have different specifications, for example, 20-24.5mm circumference, 19-20mm circumference, 16-17mm circumference.
As used herein, the term "component" refers to a component of tobacco cut filler contained in a cigarette, and the hardness, smoking taste, etc. of a cigarette can be adjusted by formulating various components and ratios of components in the tobacco cut filler.
As used herein, the term "moisture content" refers to the degree to which the individual components of the cut filler contain moisture, also referred to as moisture, expressed as a percentage. Numerically equal to the ratio of the mass of water contained in each component to the mass of each component.
In the invention, the theoretical water content of the cut tobacco is selected by referring to an industry standard, or determined according to parameters such as temperature, humidity and cut tobacco quality of an actual environment. Please refer to chinese patent CN 110720653 a.
Has the advantages that:
compared with the prior art, the method of the invention has the following advantages: (1) the detection method is simple; (2) the detection method is rapid; (3) the detection result is accurate. The method can analyze and evaluate the difference between the theoretical water content value and the actual water content value by obtaining the theoretical water content value and the actual water content value, and judge the uniformity of each component of the cigarette formula by measuring the deviation value, aims to provide reliable technical support for the quality maintenance of cigarette products, and can also be used as a technical supplement of the current industry standard.
Detailed Description
The technical solution of the present invention is further described in detail by the following examples. The exemplary embodiments of the present invention and the description thereof are provided for the purpose of explanation and are not to be construed as limiting the invention. The raw materials used in the invention are all common raw materials which can be purchased; the equipment is the general equipment that can purchase.
Example 1.
Selecting A-brand cigarettes (the specific specification of the cigarettes is as follows: 84(24+60) mm multiplied by 24.3mm, wherein 84 is the length of the cigarettes, 24 is the length of the filter stick, 60 is the length of the cigarette body, and 24.3 is the circumference of the cigarettes), and placing the samples under the environment temperature and humidity condition of 22 ℃ and relative humidity of 60% for balancing for 48 hours. And randomly grouping the balanced cigarettes according to 3 cigarettes in each group, and totally grouping the cigarettes into 30 groups. The tobacco shreds from each group of cigarettes were peeled from the smoking material to form 30 groups of tobacco shreds weighing approximately 2 g. And (3) detecting the moisture content value of each group of cut tobaccos by using a Mettler-tolliduo HB43-S halogen moisture tester.
According to the isothermal moisture absorption characteristics of the tobacco shreds (the large-line tobacco shreds, the small-line tobacco shreds, the stem shreds and the expanded tobacco shreds) of the components of the brand, calculating the theoretical value of the water content of the large-line tobacco shreds, the small-line tobacco shreds, the stem shreds and the expanded tobacco shreds at the temperature of 22 ℃ and the relative humidity of 60%.
As shown in table 1, the theoretical moisture value H of the finished tobacco shreds under the above-mentioned environmental temperature and humidity is obtained according to the formula ratio of each component of tobacco shreds in the finished tobacco shreds. The calculation formula is H ═ 11.52% × 48.64% + 12.10% × 31.36% + 11.86% × 7.00% + 14.25% × 13.00%.
TABLE 1 ratio of the components and theoretical moisture content
The theoretical water content value H and the actual detection value H of the finished cut tobacco are compared1、H2、H3、H4、……、H30Respectively comparing the calculated values to calculate a deviation value s1＝|H-H1|/H、s2＝|H-H2|/H、s3＝|H-H3|/H、s4＝|H-H4|/H、……、s30＝|H-H30I/H, and calculating the average value S ═ S of the deviation of the water content1+s2+s3+s4+……+s30) 2.16% for/30, 97.84% for mixing uniformity value F1-2.16%.
TABLE 2 actual water cut value and deviation value
Example 2.
Selecting cigarettes of grade B, wherein the specifications of the cigarettes are as follows: 84(27+57) mm is multiplied by 24.3mm, wherein 84 is the cigarette length, 27 is the filter stick length, 57 is the cigarette body length, and 24.3 is the cigarette circumference. The sample is placed under the ambient temperature and humidity condition of 24 ℃ and 58% of relative humidity for balancing for 48 hours. And randomly grouping the balanced cigarettes according to 3 cigarettes in each group, and totally grouping the cigarettes into 30 groups. The tobacco shreds from each group of cigarettes were peeled from the smoking material to form 30 groups of tobacco shreds weighing approximately 2 g. And (3) detecting the moisture content value of each group of cut tobaccos by using a Mettler-tolliduo HB43-S halogen moisture tester.
According to the isothermal moisture absorption characteristics of the tobacco shreds (A line tobacco shreds, B line tobacco shreds, C line tobacco shreds, stem shreds and expanded tobacco shreds) of the components of the brand, calculating the theoretical values of the moisture contents of the A line tobacco shreds, the B line tobacco shreds, the C line tobacco shreds, the stem shreds and the expanded tobacco shreds at the temperature of 24 ℃ and the relative humidity of 58%.
As shown in table 3, the theoretical moisture value H of the finished tobacco shreds under the above-mentioned environmental temperature and humidity is obtained according to the formula ratio of each component of tobacco shreds in the finished tobacco shreds. The calculation formula is H ═ 12.11% × 21.4% + 11.94% × 42.8% + 11.85% × 21.4% + 11.87% × 9.6% + 13.84% × 4.8%.
TABLE 3 ratio of components and theoretical Water content
The theoretical water content value H and the actual detection value H of the finished cut tobacco are compared1、H2、H3、H4、……、H30Respectively comparing the calculated values to calculate a deviation value s1＝|H-H1|/H、s2＝|H-H2|/H、s3＝|H-H3|/H、s4＝|H-H4|/H、……、s30＝|H-H30I/H, and calculating the average value S ═ S of the deviation of the water content1+s2+s3+s4+……+s30) 0.81% for/30, mixing allThe uniformity value F was 1-0.81% and 99.19%.
TABLE 4 actual water cut value and deviation value
The results of the two embodiments are combined, so that the uniformity of each component of the cigarette (cigarette) and the uniformity of the whole cigarette (cigarette) can be simply, quickly and accurately detected by the detection method. The method can provide reliable technical support for quality maintenance of the cigarette products.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (8)
1. A method of determining tobacco blend uniformity, the method comprising:
(1) balancing a plurality of cigarettes of the same tobacco sample at specific temperature and humidity, and measuring the actual water content value H of the cigarettes1、H2、H3……Hx；
(2) Calculating theoretical water content values H of each component in the tobacco sample under the specific temperature and humidityA、HB、HC……Hy；
(3) Calculating theoretical moisture content value H (%) of the tobacco sample, wherein H ═ first component proportion a x first component moisture content value HA+ second component proportion bXsecond groupWater content value HB+ third component proportion c x third component moisture content value HC… … + ratio of nth component y x value of water content of nth component HyAnd, said a + b + c … … + y is 100%;
(4) the mean value of the deviations S (%) is calculated, S ═ S (S)1+s2+s3+、、、+sx) X, wherein s1＝|H-H1|/H、s2＝|H-H2|/H、s3＝|H-H3|/H……sx＝|H-Hx|/H；
(5) The value of the mixing uniformity F (%) was calculated, F ═ 1-S.
2. The method of claim 1, wherein the uniformity of the tobacco sample is judged by F, the greater the F value, the better the uniformity of the tobacco sample.
3. The method of claim 1 or 2, wherein, in the step (1), further comprising: and (4) stripping the tobacco shreds of the cigarettes from the tobacco material, and measuring the actual moisture content value by using the tobacco shreds.
4. The method of claim 3, wherein, in step (1), the actual moisture content value is measured using a moisture meter.
5. The method of claim 4, wherein the moisture meter is a Mettler-Torledo HB43-S halogen moisture meter.
6. The method according to any one of claims 1 to 5, wherein in step (2), an isothermal moisture absorption characteristic curve of each component in the tobacco sample is calculated at the specific temperature and humidity, and a theoretical moisture content value of each component in the tobacco sample is calculated from the isothermal moisture absorption characteristic curve.
7. The method of any one of claims 1-6, wherein in step (2), the temperature is 15-30 ℃ and the humidity is 40% -80% relative humidity.
8. The method of claim 7, said temperature being 20-25 ℃, said humidity being 50% -70% relative humidity.
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Application publication date: 20210319 |