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Method for reducing heavy metal content in traditional Chinese herbals

A technology for traditional Chinese medicinal materials and heavy metals is applied in the field of heavy metal pollution control in the processing of traditional Chinese medicines, which can solve problems such as troublesome and slow shortcomings, and achieve the effects of simple operation, short cycle and significant economic benefits.

Inactive Publication Date: 2015-07-15
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its shortcomings are slow and cumbersome. To achieve the desired effect, it must be used 15-30 days before the product is mature and picked, and it needs to be used repeatedly

Method used

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  • Method for reducing heavy metal content in traditional Chinese herbals
  • Method for reducing heavy metal content in traditional Chinese herbals
  • Method for reducing heavy metal content in traditional Chinese herbals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: Water, sodium humate, potassium humate and ammonium humate reduce test of notoginseng heavy metal

[0014] In the experiment, the mass percent concentration of humate was 1%, and the dried Panax notoginseng was immersed in the humate solution at a solid-to-liquid ratio of 1:3. The washing time was 60 minutes, and the washing method was stirring.

[0015] After washing, the medicinal materials are taken out, rinsed with clean water, and dried, and the total heavy metal content in Sanqi is detected by ultraviolet spectrophotometry; the content of lead and cadmium in Sanqi is detected by atomic fluorescence spectroscopy; The contents of mercury, arsenic and copper in the samples are shown in Table 1.

[0016] Table 1: Effects of water and three kinds of humates on the reduction of heavy metals of Panax notoginseng

[0017]

Embodiment 2

[0018] Example 2: Experiment on the reduction of heavy metals of Panax notoginseng by sodium humate solution under different washing conditions

[0019] Test according to the following conditions:

[0020] Condition 1: The washing time is 10 minutes, the mass percentage concentration of sodium humate is 0.05%, the solid-liquid ratio is 1:1, and the washing method is stirring;

[0021] Condition 2: The washing time is 180 minutes, the mass percentage concentration of sodium humate is 5%, the solid-to-liquid ratio is 1:6, and the washing method is stirring.

[0022] Condition 3: The washing time is 300min, the mass percentage concentration of sodium humate is 10%, the solid-liquid ratio is 1:10, and the washing method is stirring.

[0023] After washing, the medicinal materials were taken out, rinsed with clear water, dried, and the heavy metal residues in the medicinal materials were determined according to the method in Example 1. The results are shown in Table 2.

[002...

Embodiment 3

[0027] Example 3: Sodium humate solution under different washing conditions for the reduction of heavy metals in P.

[0028] Test according to the following conditions:

[0029] Condition 1: The washing time is 10 minutes, the sodium humate concentration is 0.05%, the solid-to-liquid ratio is 1:1, and the washing method is stirring;

[0030] Condition 2: Washing time 180min, sodium humate concentration 5%, solid-liquid ratio 1:6, washing method is stirring.

[0031] After washing, the medicinal materials were taken out, rinsed with water, dried and digested, and the heavy metal residues in the medicinal materials were determined according to conventional methods. The results are shown in Table 3.

[0032] Table 3. The washing results of different washing conditions on the reduction effect of heavy metals

[0033] .

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Abstract

The invention provides a method for reducing heavy metal content in the traditional Chinese herbals. The method comprises the following steps: adding traditional Chinese herbals in a humate solution with a concentration of 0.05 to 5% according to a solid / liquid ratio of 1:1 to 1:6; and stirring for 10 to 180 minutes so as to greatly reduce the heavy metal content of the traditional Chinese herbals. The operation is simple, the cost is low, and the provided method can be widely used to reduce the heavy metal content of traditional Chinese herbals especially stems or roots such as pseudo-ginseng, paris polyphylla, saussurea lappa, and the like, and thus is worthy to promote and use.

Description

technical field [0001] The invention relates to the field of heavy metal pollution control in traditional Chinese medicine processing, in particular to a method for reducing heavy metals in Chinese medicinal materials. Background technique [0002] Excessive heavy metals have become a prominent problem affecting the quality and safety of traditional Chinese medicinal materials. There are literature reports on the heavy metal content of commonly used decoction pieces in Chinese pharmacies, and the results show that 18 of the 35 samples contained excessive heavy metals, and 7 of the 10 kinds of Chinese herbal medicines contained excessive heavy metals [Chen Yihe, et al., Heavy metal content of commonly used decoction pieces in Chinese pharmacies Determination. Chinese Patent Medicine, 2003,25(5):405-407]. Extensive and serious excessive heavy metals in Chinese herbal medicines have become an urgent problem that affects the safety of Chinese herbal medicines. [0003] In addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/258A61K36/896A61K36/285A61K36/31A61K36/00
Inventor 向诚周永峰李宝才张惠芬
Owner KUNMING UNIV OF SCI & TECH
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