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Method for testing moisture adsorption-desorption performance of tobacco leaf

A test method and technology for tobacco leaves, applied in the direction of using material absorption and weighing, can solve the problems of tobacco leaf deterioration, long test time, inaccurate results, etc., and achieve a high degree of automation, short test time, and good accuracy and repeatability. Effect

Active Publication Date: 2011-10-19
SHANGHAI TOBACCO GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the test time of this static test method is very long, usually takes 30-60 days, during which a lot of manual operations are required, resulting in inaccurate results, poor repeatability and even deterioration of tobacco leaves, etc.
It has seriously failed to meet the requirements of the development of tobacco science and technology

Method used

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  • Method for testing moisture adsorption-desorption performance of tobacco leaf
  • Method for testing moisture adsorption-desorption performance of tobacco leaf
  • Method for testing moisture adsorption-desorption performance of tobacco leaf

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Use an analytical balance to weigh 1.000g of flue-cured tobacco B2F (or C2F) shredded tobacco from A origin, spread it flat in the microbalance sample basket of the dynamic moisture adsorption analysis system, and examine the higher relative humidity (60% relative humidity) at 22°C After equilibrium under the condition, the change of the quality of shredded tobacco over time in a dry environment with a relative humidity of 30%, the balance control mode is set to the rate control mode (dm / dtMode) dm / dt=0.0005 (% / min). The computer automatically records the sample weight every 1 minute, and the instrument ends weighing when the smoke sample reaches the water dispersion imbalance. Put the sample basket into the oven, refer to the oven method, dry at 100°C for 2 hours, and weigh it with an analytical balance to obtain the dry weight of the sample. By detecting the sample weight with time, the change curve data chart of relative humidity, combined with the dry basis weight, ...

Embodiment 2

[0044] Weigh 1.000g flue-cured tobacco B2F from A origin (or B2F flue-cured tobacco from B origin) cut tobacco with an analytical balance, spread it flat in the microbalance sample basket of the dynamic moisture adsorption analysis system, and investigate the higher relative humidity (relative humidity After balancing under the condition of 60%), the quality of shredded tobacco changes with time in a dry environment with a relative humidity of 30%, and the balance control mode is set to the rate control mode (dm / dt Mode) dm / dt=0.0005 (% / min). The computer automatically records the sample weight every 1 minute, and the instrument ends weighing when the smoke sample reaches the water dispersion imbalance. Put the sample basket into the oven, refer to the oven method, dry at 100°C for 2 hours, and weigh it with an analytical balance to obtain the dry weight of the sample. By detecting the sample weight with time, the change curve data chart of relative humidity, combined with the...

Embodiment 3

[0049] Weigh 1.000g cut flue-cured tobacco B2F (or Burley tobacco) from B origin with an analytical balance, spread it flat in the microbalance sample basket of the dynamic moisture adsorption analysis system, and investigate the higher relative humidity (relative humidity 60°C) at 22°C %) condition, the change of the quality of shredded tobacco over time in a dry environment with a relative humidity of 30%, and the balance control mode is set to the rate control mode (dm / dt Mode) dm / dt=0.0005 (% / min). The computer automatically records the sample weight every 1 minute, and the instrument ends weighing when the smoke sample reaches the water dispersion imbalance. Put the sample basket into the oven, refer to the oven method, dry at 100°C for 2 hours, and weigh it with an analytical balance to obtain the dry weight of the sample. By detecting the sample weight with time, the change curve data chart of relative humidity, combined with the dry basis weight, calculate the dry basi...

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Abstract

The invention relates to the field of tobacco leaf detection, in particular to a method for testing and evaluating moisture adsorption-desorption performance of tobacco leaf and moisture retention performance of tobacco leaf humectant. In the invention, the moisture adsorption balance of the tobacco leaf under the condition of high humidity is researched by adopting a dynamic water adsorption analysis method; subsequently, according to the dynamics rule of water dissipation in dry environment, a linear fitting chart is drawn on t0.5 by the moisture content Mt of tobacco leaf at the time t, thus working out the water dissipation rate constant k according to the slope of the beeline; and the initial moisture content M0 of the cut tobacco and the water dissipation rate constant k are used asbasis for evaluating the moisture adsorption-desorption performance and the moisture retention performance of tobacco leaf. The method can be used for testing the performance of the tobacco humectantand sieving the cigarette humectant, etc. Compared with the traditional method, the method has the advantages of short test time, high automation degree, high simpleness and practicability, good veracity and repeatability and the like.

Description

technical field [0001] The invention relates to the field of tobacco leaf detection, in particular to a new method for testing and evaluating the moisture absorption and dehumidification characteristics of tobacco leaves and the moisturizing performance of tobacco leaf moisturizing agents. Background technique [0002] Tobacco leaf moisture, also known as tobacco leaf moisture content and tobacco leaf moisture content, plays an important role in tobacco production and processing, and is one of the important components of tobacco and its products. The moisture absorption and dehumidification process of tobacco runs through the whole process of cigarette production, storage and use. In this series of links, there are strict controls and requirements on the moisture of tobacco leaves, and different moisture contents are required to adapt to it. Among them, the temperature, humidity and moisture content and their changes have great impact on raw material loss and product intrins...

Claims

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Application Information

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IPC IPC(8): G01N5/02
Inventor 陈超英宗国强吴达刘百战
Owner SHANGHAI TOBACCO GRP CO LTD
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