CN107490658B - A kind of evaluation method of cigarette humid keeping performance - Google Patents
A kind of evaluation method of cigarette humid keeping performance Download PDFInfo
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- CN107490658B CN107490658B CN201710812269.3A CN201710812269A CN107490658B CN 107490658 B CN107490658 B CN 107490658B CN 201710812269 A CN201710812269 A CN 201710812269A CN 107490658 B CN107490658 B CN 107490658B
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 28
- 238000011156 evaluation Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 241000208125 Nicotiana Species 0.000 claims abstract description 24
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000000470 constituent Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- 230000018044 dehydration Effects 0.000 claims abstract description 4
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 4
- 230000002269 spontaneous effect Effects 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 16
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000000523 sample Substances 0.000 description 30
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 9
- 239000003906 humectant Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010533 azeotropic distillation Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- 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
-
- 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
- G01N33/0078—Testing material properties on manufactured objects
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The invention discloses a kind of evaluation methods of cigarette humid keeping performance, a variety of constituents of the cigarette including pipe tobacco, expansion thread and stem etc., method includes the following steps: each constituent is individually placed in climatic chamber by (1), to balance at least 48h spare；(2) the initial water activity a of each constituent is measured under sealing stateWi beginsWith initial temperature TBegin, and the termination water activity a after predetermined amount of timeWi is wholeWith final temperature TEventually；(3) calculate physics humectation evaluation number M according to formula: wherein as M < 0, then after each raw material is compounded into cigarette in proportion, self defocusing dehydration point, value is more negative, and moisture loss is faster；As M > 0, then each raw material is compounded into spontaneous absorption moisture after cigarette in proportion, and the bigger moisture absorption of its value is faster or moisture loss is slower.The present invention can solve the problems such as test process in existing evaluation method is cumbersome, the period is long, such environmental effects are serious.
Description
Technical field
The present invention relates to Field of Tobacco, and in particular to it is a kind of based on thermodynamics method to the evaluation skill of tobacco physics humectation
Art and application.
Background technique
Tobacco physics humid keeping performance refers to the water holding and water holding capacity of tobacco, is tobacco organoleptic quality and the weight that storage is guaranteed the quality
Want one of influence factor.The height of tobacco physics humid keeping performance is by tobacco material (pipe tobacco, expansion thread, stem, hereinafter referred to as " three
Silk ", is the primary raw material in cigarette), sugared fragrance formulations, the conditions such as processing technology and packaging material influence, depend primarily on cigarette
The lost rate of Zhi Shuifen.In recent years, the research in terms of domestic and international humectation be largely focused on humectant, auxiliary material humectation technology,
The research of humectation technique and measurement of water-content coefficient method mainly passes through Oven Method, sulfuric acid seasoning, azeotropic distillation method, DVS Dynamic Water
Divide the means such as analyzer, infrared method and microwave method measurement moisture content of cut tobaccos to carry out humid keeping performance evaluation, but these methods are tested
Process is cumbersome, the period is longer, serious by such environmental effects, is difficult quick and precisely to characterize the humid keeping performance of tobacco.Therefore it is badly in need of
Develop a kind of easy accurately tobacco physics humectation assessment technique.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of commenting for fast and accurately cigarette humid keeping performance
Valence method overcomes the problems, such as that existing evaluation method process is cumbersome, detection cycle is long and such environmental effects are serious.
The purpose of the present invention is achieved by the following technical programs:
The invention discloses a kind of evaluation method of cigarette humid keeping performance, the cigarette includes pipe tobacco, expansion thread and stem
A variety of constituents inside, wherein the mass percent of i-th kind of constituent is xi, wherein i is just more than or equal to 1
Integer, method includes the following steps:
(1) each constituent is individually placed in climatic chamber to balance at least 48h spare；
(2) the initial water activity a of each constituent is measured under sealing stateWi beginsWith initial temperature TBegin, and pass through
Termination water activity a after predetermined amount of timeWi is wholeWith final temperature TEventually；
(3) physics humectation evaluation number M is calculated according to the following formula:
Wherein T is temperature, unit K；R is ideal gas constant, 8.3145J/ (mol*K).
Wherein as M < 0, then after each raw material is compounded into cigarette in proportion, self defocusing dehydration point, the more negative moisture loss of value
It is faster；As M > 0, then each raw material is compounded into spontaneous absorption moisture after cigarette in proportion, and the bigger moisture absorption of its value it is faster or
Person's moisture loss is slower.
Wherein, the equilibrium temperature in step (1) is (22 ± 1) DEG C, and equilibrium humidity is (60 ± 2) %.
Wherein, the water activity in step (2) is measured by admeasuring apparatus for measuring moisture content of substance.
Wherein, the air-tight state in step (2) and the constant temperature and humidity state in step (1) are respective independent choices, two
Person has no any relevance.Under the air-tight state, in order to avoid test front and back sample and environment generate humidity transfer, before measurement,
Guarantee that sample is in sealing state, is placed in same environment with sensor and places 30 minutes to reach complete equipilibrium；When measurement, with envelope
At membrana oralis sealing off gap, 15min is stood.
Compared with the existing technology, the present invention has following remarkable advantage:
1, the cigarette humid keeping performance evaluation method that the present invention announces is easy to operate, and detection cycle is short, can comprehensively consider environment
Factor can preferably make up process in existing assessment technique with the variation tendency of simple mode quick predict cigarette moisture
Cumbersome, the problems such as detection cycle is long and such environmental effects are serious.
2, the cigarette humid keeping performance evaluation method that the present invention announces is applicable in single-component system, multicomponent system and changeable body
System, mixes solid-liquid and is equally applicable with system, can be applied to raw material of cigarette formulation optimization, production technology is improved and humectant screening
Deng material loss, reduction research and development cost, raising working efficiency in reduction development process.
Detailed description of the invention
Nothing.
Specific embodiment
The present invention is further described below with reference to embodiment, but the scope of protection of the present invention is not limited thereto.
Embodiment 1
(1) three pre-treatment: cigarette three are respectively placed in the constant temperature of temperature (22 ± 1) DEG C, relative humidity (60 ± 2) %
It is spare that 48h is balanced in constant humidity cabinet；
(2) three measure respectively: taking out from climatic chamber after each sample balance 48h, sealing is placed in test wrapper respectively
Border balance a period of time, the initial water activity a of each sample is then detected with admeasuring apparatus for measuring moisture content of substanceWi beginsWith initial temperature TBegin, and
Termination water activity a after predetermined amount of timeWi is wholeWith final temperature TEventually.Before booting measurement, guarantee that sample is in sealing state,
It is placed in same environment with sensor and places 30 minutes to avoid test front and back sample and environment from generating humidity and turn up to complete equipilibrium
It moves.Test substance is put into measuring box, is put at 2/3, covers Sensor section rapidly, while with sealed membrane sealing off gap
Place stands 15min, opens host power supply, and activity channel is selected to start to test, and initial water activity a is recorded after 5~6minWi beginsWith it is first
Beginning temperature TBegin.After 7 days, the termination water activity a of each sample is measured againWi is wholeWith final temperature TEventually。
(3) according to three respective testing results, the physics humectation evaluation number M of each sample is calculated separately:
In the present embodiment, sample is respectively 100% pipe tobacco, expansion thread and stem, and calculated result is as shown in table 1 below:
Table 1 at room temperature three individually storage when physics humectation evaluation number
As can be seen from Table 1, each sample has different degrees of moisture loss after 7 days, the object of this and each sample
It is on capable of coincideing, to reflect the practical desiccation of sample that reason humectation evaluation number M, which is negative value,.In three, the M value of pipe tobacco
Maximum, closest to 0, stem second, expansion thread third.According to the faster rule of the more negative moisture loss of physics humectation evaluation number
The moisture loss of predictable pipe tobacco is most slow, and expansion thread is most fast, meets the practical moisture rate of change size arrangement of three samples.
Embodiment 2
(1) three pre-treatment: cigarette three are respectively placed in the constant temperature of temperature (22 ± 1) DEG C, relative humidity (60 ± 2) %
It is spare that 48h is balanced in constant humidity cabinet；
(2) three measure respectively: taking out from climatic chamber after each sample balance 48h, sealing is placed in test wrapper respectively
Border balance a period of time, the initial water activity a of each sample is then detected with admeasuring apparatus for measuring moisture content of substanceWi beginsWith initial temperature TBegin, and
Termination water activity a after predetermined amount of timeWi is wholeWith final temperature TEventually.Before booting measurement, guarantee that sample is in sealing state,
It is placed in same environment with sensor and places 30 minutes to avoid test front and back sample and environment from generating humidity and turn up to complete equipilibrium
It moves.Test substance is put into measuring box, is put at 2/3, covers Sensor section rapidly, while with sealed membrane sealing off gap
Place stands 15min, opens host power supply, and activity channel is selected to start to test, and initial water activity a is recorded after 5~6minWi beginsWith it is first
Beginning temperature TBegin.After 7 days, the termination water activity a of each sample is measured againWi is wholeWith final temperature TEventually。
(3) according to three in cigarette practical mixing proportions, the physics humectation evaluation number M of cigarette is calculated:
In the present embodiment, practical mixing proportion is as follows: weighing 3 parts of 5g pipe tobaccos, fixed expansion silk ratio (17%), stem point
Mix matching according to 13%, 15% and 17%.Calculated result is as shown in table 1 below:
Table 2 mixes cigarette physics humectation evaluation number when with different proportion stem
As can be seen from Table 2, each sample has different degrees of moisture loss after 7 days, the object of this and each sample
It is on capable of coincideing, to reflect the practical desiccation of sample that reason humectation evaluation number M, which is negative value,.And with stem mixture proportion
Increase, dehydration ratio is more, and this also the big with the negative value of M, and the stronger evaluation rule of moisture ability of scattering and disappearing matches, and reflects
Change component in sample and cigarette integrally inhales the internal relation of desiccation.It therefore follows that: pipe tobacco, expansion thread constant rate
Under the premise of, the amount of stem is fewer, and humid keeping performance is better.
Embodiment 3
(1) pipe tobacco pre-treatment: by pipe tobacco be placed in temperature (22 ± 1) DEG C, relative humidity (60 ± 2) % climatic chamber in
It is spare to balance 48h；
(2) it sprays humectant: the pipe tobacco after balance 48h being taken out, weighs four parts, every part of 10g uses laryngeal spray respectively
In 0.5% ratio sprinkling reference material (deionized water), propylene glycol and independent research humectant 1#, opens wide be placed in after mixing
It is to be measured in climatic chamber.
(3) each sample seals respectively is placed in test environmental balance for a period of time, then detects each with admeasuring apparatus for measuring moisture content of substance
The initial water activity a of sampleWi beginsWith initial temperature TBegin, and the termination water activity a after predetermined amount of timeWi is wholeIt is warm with terminating
Spend TEventually.Before booting measurement, guarantee that sample is in sealing state, is placed in same environment with sensor and places 30 minutes up to completely
Balance avoids test front and back sample and environment from generating humidity transfer.Test substance is put into measuring box, is put at 2/3, rapidly
Sensor section is covered, while at sealed membrane sealing off gap, standing 15min, opening host power supply, activity channel is selected to start
It tests, initial water activity a is recorded after 5~6minWi beginsWith initial temperature TBegin.After 7 days, the termination water activity of each sample is measured again
aWi is wholeWith final temperature TEventually。
(7) tobacco physics humid keeping performance is evaluated: the physics humectation evaluation number M of cigarette is calculated as follows,
In the present embodiment, 100% is the pipe tobacco being added after humectant in sample, and calculated result is shown in Table 3.
Table 3 adds the humid keeping performance experimental data after different humectants
Changing always from table 3 it can be found that testing the physics humectation evaluation number M sequence obtained for each sample four times,
But but height is consistent for the 3rd day, the 8th day and the changing rule for the physics humectation evaluation number M that the 15th day measures, i.e. control sample
> 1# humectant sample > propylene glycol sample.It can speculate that the humid keeping performance of deionized water is best accordingly, 1# humectant is placed in the middle, propylene glycol
It is worst.
Claims (3)
1. a kind of evaluation method of cigarette humid keeping performance, a variety of compositions of the cigarette including pipe tobacco, expansion thread and stem
Ingredient, wherein the mass percent of i-th kind of constituent is xi, wherein i is the positive integer more than or equal to 1, and feature exists
In, method includes the following steps:
(1) each constituent is individually placed in climatic chamber to balance at least 48h spare；
(2) the initial water activity of each constituent is measured under sealing stateWith initial temperature TBegin, and by pre-
Termination water activity after section of fixing timeWith final temperature TEventually；
(3) physics humectation evaluation number M is calculated according to the following formula:
Wherein T is temperature, unit K；R is ideal gas constant, 8.3145J/ (mol*K)；
Wherein as M < 0, then after each raw material is compounded into cigarette in proportion, self defocusing dehydration point, value is more negative, and moisture loss is faster；
As M > 0, then each raw material is compounded into spontaneous absorption moisture after cigarette in proportion, and the bigger moisture absorption of its value is faster or moisture
It scatters and disappears slower.
2. according to the method described in claim 1, it is characterized by: the equilibrium temperature in step (1) is (22 ± 1) DEG C, balance
Humidity is (60 ± 2) %.
3. according to the method described in claim 1, it is characterized by: the water activity in step (2) is surveyed by admeasuring apparatus for measuring moisture content of substance
Fixed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110514096B (en) * | 2019-07-26 | 2020-11-20 | 云南中烟工业有限责任公司 | Cigarette moisture retention performance evaluation method based on film-forming performance of moisture retention agent |
| CN110608968A (en) * | 2019-11-05 | 2019-12-24 | 福建中烟工业有限责任公司 | Water activity detection device and water activity detection method |
| CN111060546A (en) * | 2019-11-27 | 2020-04-24 | 广东中烟工业有限责任公司 | Cigarette moisture retention performance evaluation method based on low-field nuclear magnetic resonance technology |
| CN111189974A (en) * | 2020-01-07 | 2020-05-22 | 云南中烟工业有限责任公司 | Method for evaluating moisture-proof and moisture-retaining performance of package |
| CN111772226A (en) * | 2020-08-05 | 2020-10-16 | 四川三联新材料有限公司 | Method for improving comfort of heated cigarettes |
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