CN108426800B - Method for measuring loss of tobacco lamina storage process - Google Patents
Method for measuring loss of tobacco lamina storage process Download PDFInfo
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- CN108426800B CN108426800B CN201810100079.3A CN201810100079A CN108426800B CN 108426800 B CN108426800 B CN 108426800B CN 201810100079 A CN201810100079 A CN 201810100079A CN 108426800 B CN108426800 B CN 108426800B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The invention belongs to the technical field of tobacco leaf raw material storage and maintenance, and particularly relates to a loss measurement method for a tobacco leaf storage process. The method mainly adopts the technical idea that: selecting a piece tobacco sample piece based on the current piece tobacco storage and maintenance mode, cutting a block-shaped sample in an integral cutting mode, putting the sample into a non-woven fabric bag, putting the non-woven fabric bag into a piece tobacco storage tobacco box in situ, managing according to the current tobacco leaf maintenance mode, and calculating the process loss of the piece tobacco according to the weight change of the experimental sample in different storage periods. Compared with the existing extensive type loss measurement and estimation mode of the tobacco sheet storage process, the loss condition in the tobacco sheet storage process can be reflected more accurately, and the loss rule of the tobacco sheet storage can be reflected by combining the measurement results in different periods, so that more accurate basic support is provided for scientific setting of the tobacco sheet warehouse loss index and improvement of the storage process.
Description
Technical Field
The invention belongs to the technical field of tobacco leaf raw material storage and maintenance, and particularly relates to a loss measurement method for a tobacco leaf storage process.
Background
The loss of the tobacco lamina storage process is the normal loss of the tobacco lamina in the natural alcoholization process, and the loss and the change rule have a certain relation with the type, the producing area and the grade of the tobacco lamina, the climate of the storage area, the warehouse condition, the storage time and other factors. However, in general, the amount of tobacco loss from the sheet storage process depends on the intensity of the self-heating and self-humidifying of the tobacco. Under the condition of proper moisture, the higher the temperature of the tobacco leaves, the deeper the enzyme action process is carried out, and the larger the process loss amount is.
In the existing research, the research on the storage of the tobacco flakes at home and abroad is mostly started from the aspect of quality, for example, the research is carried out from the aspects of aroma precursor substances, conventional chemical components, sensory quality change and the like, and the research is fresh on the aspect of process loss during the storage and alcoholization of the tobacco flakes.
In the prior art, in the aspect of measuring the process loss during the alcoholization of the tobacco flakes, the rough estimation is mainly carried out by adopting the weight difference of warehousing and ex-warehouse of the tobacco flakes, and the actual loss condition of the tobacco flakes in the storage process cannot be accurately reflected. Therefore, it is necessary to develop an accurate and feasible measuring method, so as to lay a foundation for accurately measuring the loss of dry substances in the process of storing the tobacco flakes and improving the tobacco leaf storage process.
Disclosure of Invention
The invention aims to provide a method for measuring loss of a tobacco lamina storage process, thereby providing more accurate foundation support for scientific setting of tobacco lamina storage loss indexes and laying a foundation for finally forming a lean management mode for tobacco lamina storage, maintenance and lean management.
The technical solution of the present application is detailed as follows.
A loss measuring method for a tobacco lamina storage process comprises the following main technical ideas: selecting a piece tobacco sample piece based on the current piece tobacco storage and maintenance mode, cutting a block-shaped sample in an integral cutting mode, putting the block-shaped sample into a non-woven fabric bag, putting the non-woven fabric bag into a piece tobacco storage tobacco box in situ, managing according to the current tobacco leaf maintenance mode, and calculating the process loss of the piece tobacco according to the weight change of the experimental sample in different storage periods; the method specifically comprises the following operation steps:
(1) selecting a sample piece: to make the selected tobacco representative, a middle layer of the stacked tobacco boxes is selected as a test sample, for example: in the stack with the height of 4 layers, a smoke box in the middle of the 3 rd layer (counted from the bottom layer) of the stack is extracted as a test sample; in the stack with the height of 7 layers, the smoke box in the middle of the 5 th layer (counted from the bottom layer) of the stack can be taken as a test sample; of course, other smoke boxes can be randomly selected, or other statistical methods can be adopted to select proper parts and proper number of smoke boxes as test samples;
(2) sampling and weighing a sample piece: taking out a 1-5 kg cuboid smoke block as a test sample (the specifications of the test samples taken by different test samples should be kept consistent as much as possible to ensure the reliability of the later-stage measurement result) on the surface layer of the test sample selected in the step (1) in an integral cutting mode, and weighing the test sample and recording the weighed test sample as the original weight of the sample;
before weighing a sample, preferably balancing the sample, specifically, balancing the moisture of the sample in a standard air state (the temperature is 22 ℃ plus or minus 1 ℃ and the humidity is 60 percent plus or minus 3%) for 48-96 hours, and then measuring a proper amount of the sample by using an oven method to obtain the moisture content data of the sample so as to calculate the dry matter content of the sample;
weighing a test sample, putting the test sample into clean non-woven fabrics (the non-woven fabrics meet the food-grade requirement), putting the test sample into a test sample piece (a smoke box) in situ, managing according to the current tobacco leaf curing mode, and simultaneously recording the temperature and the humidity of the environment;
(3) sample balancing and weighing: storing and alcoholizing under normal warehouse conditions, weighing the test samples at different time points of the strip tobacco storage according to requirements, recording the weights as sample weights (second weight), and calculating the process loss rate by combining the original weight records of the samples in the step (2), wherein the calculation formula is as follows:
process loss = original weight x (100% -original moisture%) -second weight x (100% -second moisture%);
before the test sample is weighed, sample balancing is preferably carried out, and the specific operation is as follows: balancing the moisture of a test sample for 48-96 hours under a standard air state (the temperature is 22 ℃ plus or minus 1 ℃ and the humidity is 60% + orminus 3%), and then taking a proper amount of sample to obtain the moisture content data of the test sample by adopting an oven method so as to calculate the dry matter content of the sample.
In the application, the applicant provides a refined loss measuring method for a tobacco sheet storage process, compared with the existing extensive loss measuring and estimating method for the tobacco sheet storage process, the loss condition in the tobacco sheet storage process can be reflected more accurately, and the loss rule of the tobacco sheet storage can be reflected by combining the measuring results in different periods, so that more accurate foundation support is provided for scientific setting of loss indexes of a tobacco sheet warehouse and improvement of the storage process, a foundation can be laid for a lean management mode of tobacco sheet storage and maintenance, and the method has better practical value and popularization and application significance.
Detailed Description
The present application is further explained below with reference to examples.
Example 1
Before describing the specific embodiments, a brief description of the background of this embodiment is provided below.
A test warehouse, namely a Xinzheng Tianye exclusive warehouse (the average temperature in the warehouse is 16.4 ℃, the average relative humidity is 52.7 percent, and the average temperature of a core is 17.8 ℃) manufactured by Henan tobacco industry Limited liability company in the center;
test tobacco strips: processing Yunnan C3F grade finished tobacco sheets put in storage in 2013;
sample balancing facility: constant temperature and humidity room (room standard air state: temperature 22 ℃. + -. 1 ℃, moderate 60%. + -. 3%).
The method for measuring the loss of the tobacco sheet storage process adopted in the embodiment is described as follows.
(1) Selecting a sample piece: selecting a middle-layer smoke box as a test sample in the stacking smoke box, specifically: in the stack with the height of 4 layers, a smoke box (3 boxes in the embodiment) in the middle of the layer 3 (counted from the bottom layer) of the stack is extracted as a test sample; in the stack with 7 layers, the smoke box (3 boxes are also extracted) in the middle of the 5 th layer (counted from the bottom layer) of the stack can be extracted as a test sample;
therefore, in the present example, a total of 6 cases of test specimens were extracted as test objects.
(2) Sampling and weighing a sample piece: and (2) taking a 2kg cuboid smoke block as a test sample (the specifications of the test samples taken by different test samples should be kept consistent as much as possible to ensure the reliability of the later-stage measurement result) from the surface layer of the test sample selected in the step (1) in an integral cutting mode, and weighing the test sample and recording the weighed test sample as the original weight of the sample.
Before weighing a sample, sample balancing is carried out on the test sample, specifically, after the test sample balances moisture for 96 hours under a standard air state (the temperature is 22 ℃ plus or minus 1 ℃ and the humidity is 60 percent plus or minus 3 percent), a proper amount of sample is taken and measured by an oven method to obtain the moisture content data of the test sample.
After the test sample is weighed, the test sample is placed into clean non-woven fabrics (the non-woven fabrics are food grade), placed in a test sample piece (a smoke box) in situ, and managed according to the current tobacco leaf curing mode.
(3) Sample balancing and weighing: storing and alcoholizing under normal warehouse conditions, weighing the test sample respectively at 12 months, 18 months, 24 months, 30 months and 36 months of alcoholization, recording the weight of the sample, and calculating the process loss rate by combining the original weight record of the sample in the step (2), wherein the calculation formula is as follows:
process loss = original weight x (100% -original moisture%) -second weight x (100% -second moisture%);
before weighing a test sample, sample balancing is firstly carried out, and the specific operations are as follows: after the test sample is subjected to moisture balance for 96 hours under the standard air state (the temperature is 22 ℃ plus or minus 1 ℃ and the humidity is 60 percent plus or minus 3 percent), a proper amount of sample is taken and measured by an oven method to obtain the moisture content data of the test sample.
The statistical results are as follows:
note: the raw weight and sample weight data of the samples are average results.
From the above results, it can be seen that the loss of the tobacco flakes is continuously increasing with the extension of the alcoholization time, but the loss rate is the greatest around the first 18 months of the storage alcoholization of the tobacco flakes in terms of the degree of loss variation; and in the later stage of storage and alcoholization, the loss rate is relatively stable, and by combining the characteristic, production development or the development of a tobacco lamina storage process can be pertinently and timely carried out, and a foundation can be laid for the improvement and the fine management of the storage process.
Example 2
Before describing the specific embodiments, a brief description of the background of this embodiment is provided below.
The test warehouse is Anyang cigarette factory warehouse (average temperature in warehouse is 17.1 deg.C, average relative humidity is 50.3%, average temperature of core is 18.7 deg.C);
a test sample piece is prepared by processing Fujian B2F grade finished tobacco sheets which are warehoused in 2013 years;
sample balancing facility: constant temperature and humidity room (room standard air state: temperature 22 ℃. + -. 1 ℃, moderate 60%. + -. 3%).
The method for measuring the loss of the tobacco sheet storage process adopted in the embodiment is described as follows.
(1) Selecting a sample piece: and selecting a middle-layer smoke box as a test sample in the stacked smoke boxes, and randomly sampling 6 boxes of test samples as test objects by adopting a random sampling method.
(2) Sampling and weighing a sample piece: and (2) taking a 3kg cuboid smoke block as a test sample (the specifications of the test samples taken by different test samples should be kept consistent as much as possible to ensure the reliability of the later-stage measurement result) from the surface layer of the test sample selected in the step (1) in an integral cutting mode, and weighing the test sample and recording the weighed test sample as the original weight of the sample.
Before weighing a sample, sample balancing is carried out on the test sample, specifically, after the test sample balances moisture for 96 hours under a standard air state (the temperature is 22 ℃ plus or minus 1 ℃ and the humidity is 60 percent plus or minus 3 percent), a proper amount of sample is taken and measured by an oven method to obtain the moisture content data of the test sample.
After the test sample is weighed, the test sample is placed into clean non-woven fabrics (the non-woven fabrics are food grade), placed in a test sample piece (a smoke box) in situ, and managed according to the current tobacco leaf curing mode.
(3) Sample balancing and weighing: storing and alcoholizing under normal warehouse conditions, weighing the test sample respectively at 12 months, 18 months, 24 months, 30 months and 36 months of alcoholization, recording the weight of the sample, and calculating the process loss rate by combining the original weight record of the sample in the step (2).
Sample equilibration was also performed prior to weighing, and the calculation was performed as in example 1. The final statistical list of the calculated results is as follows:
from the above results, it can be seen that the loss of the tobacco flakes is continuously increasing with the extension of the alcoholization time, but the loss rate is the greatest around the first 18 months of the storage alcoholization of the tobacco flakes in terms of the degree of loss variation; and in the later stage of storage alcoholization, the loss rate is relatively stable, but after two years of storage alcoholization, the loss rate is suddenly increased, and then shows a continuous stable trend. By combining the characteristics, production development or the development of a tobacco flake storage process can be carried out in a targeted manner, and a foundation can be laid for the improvement and the fine management of the storage process.
In a word, by combining the loss rate rule of the tobacco flakes obtained in the above embodiment, the change rule of dry substances in the storage process of the tobacco flakes can be accurately reflected, the process loss rate of the tobacco flakes in the storage process can be accurately measured, and an accurate judgment basis is provided for scientific setting of loss indexes of a tobacco flake warehouse.
Claims (1)
1. The loss measurement method for the tobacco lamina storage process is characterized in that the storage process is a storage alcoholization process, and the storage alcoholization process is to store tobacco lamina for not less than 12 months under the condition of the average temperature of 16.4 ℃ or the average temperature of 17.1 ℃ in a warehouse; the method specifically comprises the following operation steps:
(1) selecting a sample piece: selecting a middle-layer smoke box as a test sample piece from the stacking smoke boxes;
(2) sampling and weighing a sample piece: taking out a 1-5 kg cuboid tobacco block as a test sample on the surface layer of the test sample piece selected in the step (1) in an integral cutting mode, weighing the test sample, recording the weighed test sample as the original weight of the sample, and measuring to obtain the original moisture content data of the test sample;
the test sample is packaged by non-woven fabrics after being cut;
before weighing the test sample, carrying out sample balance on the test sample, and specifically operating as follows: balancing a test sample for 48-96 hours at the temperature of 22 +/-1 ℃ and the humidity of 60% +/-3%;
when the original water content data is measured, an oven method is adopted for measurement;
weighing a test sample, packaging the test sample, placing the packaged test sample in a test sample piece in situ, managing according to a current tobacco curing mode, and simultaneously recording the temperature and humidity of the environment;
(3) sample balancing and weighing: storing and alcoholizing under normal warehouse conditions, weighing the test sample at different time points of the tobacco sheet storage according to requirements, recording the weight as the second weight of the sample, and simultaneously measuring to obtain the second moisture content data of the test sample;
before weighing the test sample to obtain the second weight data of the sample, carrying out sample balance on the test sample, and specifically operating as follows: balancing a test sample for 48-96 hours at the temperature of 22 +/-1 ℃ and the humidity of 60% +/-3%;
when the second time of moisture content data is measured, an oven method is adopted for measurement;
and (3) calculating the process loss rate by combining the original weight record of the sample in the step (2), wherein the calculation formula is as follows:
process loss rate = original weight x (100% -original moisture%) -second weight x (100% -second moisture%).
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433718A (en) * | 2002-01-22 | 2003-08-06 | 中国科学院过程工程研究所 | Gas-phase double-dynamic tobacco alcoholization fermentation method |
| CN1676044A (en) * | 2004-03-31 | 2005-10-05 | 贵州省烟草公司遵义市分公司 | Scattered leaf stacked tobacco-roasting house and its leaf roasting method |
| CN102885396A (en) * | 2011-07-20 | 2013-01-23 | 朱大恒 | Mellowing cycle adjustable tobacco mellowing storeroom and method for controlling and accelerating tobaccos to be mellowed |
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2018
- 2018-02-01 CN CN201810100079.3A patent/CN108426800B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433718A (en) * | 2002-01-22 | 2003-08-06 | 中国科学院过程工程研究所 | Gas-phase double-dynamic tobacco alcoholization fermentation method |
| CN1676044A (en) * | 2004-03-31 | 2005-10-05 | 贵州省烟草公司遵义市分公司 | Scattered leaf stacked tobacco-roasting house and its leaf roasting method |
| CN102885396A (en) * | 2011-07-20 | 2013-01-23 | 朱大恒 | Mellowing cycle adjustable tobacco mellowing storeroom and method for controlling and accelerating tobaccos to be mellowed |
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