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Detection method of medicinal material moistening degree based on water distribution state and texture change

A distribution state and detection method technology, applied in the direction of analysis materials, measuring devices, instruments, etc., can solve the problems of inability to accurately grasp the changes in the structure of water and medicinal materials, and the inability to detect the distribution of water fluidity, and achieve the effect of shortening the judgment time

Active Publication Date: 2020-12-08
JIANGXI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, traditional moisture research methods cannot detect the fluidity and distribution of water in medicinal materials, and experience such as "looking at the water head" cannot accurately grasp the changes in the texture of medicinal materials caused by water.

Method used

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  • Detection method of medicinal material moistening degree based on water distribution state and texture change
  • Detection method of medicinal material moistening degree based on water distribution state and texture change
  • Detection method of medicinal material moistening degree based on water distribution state and texture change

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 (determination of texture properties)

[0049] TA-HD plus physical property tester (texture analyzer) was used to measure the texture properties of Radix Paeoniae Alba during the moistening process, parameter setting: A / CKB cutter was selected, and the speed before testing: 1 mm s -1 , Test speed: 1 mm s -1 ; Speed ​​after test: 5 mm s -1 ; Test deformation: 70%; Trigger force: 20 g; Shear distance: 9 mm; All tests were repeated 9 times, and the shear test curve of Radix Paeoniae Alba was drawn, such as figure 1 As shown, the section of the curve ABF is the change of the induction force value of the cutter during the cutting process of Radix Paeoniae Alba. The section of the curve AB indicates that the induction force value is small when the cutter cuts through the part of the medicinal material that has been infiltrated by water, and the slope of the curve is K 1 Smaller; point B is the inflection point of the curve, and the BF section of the curve indi...

Embodiment 2

[0051] Example 2 (transverse relaxation time T 2 Determination)

[0052] Drain the water on the surface of the sample, weigh it, and put it into a glass tube with a diameter of 25 mm at the center of the permanent magnetic field, and use the CPMG (carr-purcell-meiboom-gillsquence) pulse sequence to measure the sample T 2 , measured three times in a row, and took the average value. The multi-pulse echo sequence (CPMG) is used to scan and collect NMR signals. By adjusting the layer selection gradient, phase encoding gradient and frequency encoding gradient in the MSE (multi-slicespinechoes) sequence, the top view and view imaging data of the sample are obtained respectively, and then the sirt Algorithm, the number of iterations is 100,000 times for inversion to get T 2 Atlas. T 2 Main parameters of the test: SF=20 MHz (main frequency), O1=680 KHz (offset frequency), P1=6.52 μs (90° pulse width), P2=12 μs (180° pulse width), NS=16 (acquisition times), TE=0.2 ms (echo time), ...

Embodiment 3

[0053] Embodiment 3 (measurement of water content)

[0054] Measured by LF-NMR method, respectively accurately weigh MnCl with pure water configuration mass concentration of 0.05% 2 Solution 0.1258, 0.5241, 1.0015, 2.0872, 3.0333, 4.0183, 4.8086 g, using the setting method of Example 2, the mass is the abscissa (X) (MnCl 2 The mass of the solvent in the solution is the weight of water), the amplitude of the frequency identification signal (FID) is the ordinate (Y), and a standard curve is established to obtain a regression equation, and then the water content of Radix Paeoniae Alba in different moistening times is calculated according to the equation. Water content = (m n -m o ) / m o ×100%, where m n is the water content weight of Radix Paeoniae Alba in different moistening time, m o is the initial weight of Paeoniae Alba. The test results are shown in Table 1;

[0055] Table 1 Relaxation time T during the moistening process of Radix Paeoniae Alba 2 and changes in moist...

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Abstract

The invention discloses a medicinal material moistening degree detection method based on moisture distribution state and texture change, and belongs to the field of traditional Chinese medicines, andcomprises the following steps of: 1, moistening dried root, rhizome and fruit medicinal materials for different time to respectively obtain medicinal material samples moistened at different time; 2, carrying out a shear test on the medicinal material samples moistened at different times in the step 1 by using a texture analyzer, obtaining a shearing test curve, and carrying out characteristic determination on the medicinal material sample according to the shearing test curve, wherein the shearing test curve is used for representing the change condition of the sensing stress value of the medicinal material sample. The detection method can rapidly, accurately and objectively represent the texture change of the medicinal material in the moistening process.

Description

technical field [0001] The invention relates to the field of traditional Chinese medicines, in particular to a method for detecting the moistening degree of dried medicinal materials based on the water distribution state and texture changes during moistening. Background technique [0002] Before the medicinal materials are cut into decoction pieces, they generally have to undergo water softening treatment to soften the texture of the medicinal materials and facilitate cutting. As the saying goes, "Three points for knife work, seven points for moistening work", it shows that the softening of medicinal materials is the key to cutting decoction pieces. At present, the wetting process is still mainly based on experience. The subjectivity and arbitrariness of judging the degree of softening leads to poor controllability of the production process. Sometimes there are phenomena such as water damage, hard core, continuous tablets, slipping, mold, and loss of active ingredients. Ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00
CPCG01N13/00G01N2013/006
Inventor 何雁饶小勇罗晓健刘庆珊张爱玲张尧刘微杨婧
Owner JIANGXI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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