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Method for screening anaerobic bacteria traditional Chinese medicine preparation based on TiO2 nanoprobe

A nano-probe, anaerobic bacteria technology, applied in measurement devices, instruments, analysis by nuclear magnetic resonance, etc., can solve problems such as the decrease of nuclear magnetic resonance relaxation time

Inactive Publication Date: 2017-07-07
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, a small amount of TiO2 nanomaterials will cause a significant decrease in the NMR relaxation time of water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] To screen traditional Chinese medicine formulas that have inhibitory or therapeutic effects on acne bacilli (anaerobic bacteria).

[0020] 1) Nano-TiO2 immunoprobe preparation:

[0021] TiO2 nanoparticles can be purchased from the market, or can be synthesized by physical or chemical methods with reference to literature.

[0022] Nano-TiO2 coated with silicon dioxide: take 47.5g of sodium silicate, dissolve it in a beaker with deionized water, and adjust the pH value to 12-13 with hydrochloric acid. Take 5.0g of nano-TiO2 and add it into the beaker, and stir mechanically (with a glass rod) for 5min. The mixture was sonicated for 30 min and stirred in due course. Raise the temperature to 85˚C, add hydrochloric acid dropwise to adjust the pH value to 6-7, and form a precipitate. While magnetically separating, wash the precipitate with deionized water for 3-4 times. Then, the precipitate was dispersed in 250 mL of methanol. The above process is repeated three times to...

example 2

[0027] To screen traditional Chinese medicine formulas that have inhibitory or therapeutic effects on Clostridium difficile (anaerobic bacteria).

[0028] 1) Nano-TiO2 immunoprobe preparation:

[0029] TiO2 nanoparticles can be purchased from the market, or can be synthesized by physical and chemical methods with reference to literature.

[0030] Nano-TiO2 coated with silicon dioxide: take 47.5g of sodium silicate, dissolve it in a beaker with deionized water, and adjust the pH value to 12-13 with hydrochloric acid. Take 5.0g of nano-TiO2 and add it into the beaker, and stir mechanically (with a glass rod) for 5min. The mixture was sonicated for 30 min and stirred in due course. Raise the temperature to 85˚C, add hydrochloric acid dropwise to adjust the pH value to 6-7, and form a precipitate. While magnetically separating, wash the precipitate with deionized water for 3-4 times. Then, the precipitate was dispersed in 250 mL of methanol. The above process is repeated thre...

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Abstract

The invention relates to a method for screening an anaerobic bacteria traditional Chinese medicine preparation based on a TiO2 nanoprobe and belongs to the technical field of traditional Chinese medicine development and application. The method disclosed by the invention depends on a method for preparing a traditional Chinese medicine formula for screening restraining anaerobic bacteria on the basis of the preparation of the TiO2 nanoprobe. The characteristic that the magnetic TiO2 nanoprobe prepared in the manner of antibody coating can specifically bind with the target bacterium is adopted and the influence of TiO2 magnetic characteristic on magnetic resonance imaging relaxation time is utilized to detect if the target bacterium is contained in a sample. The magnetic TiO2 nanoprobe and the magnetic resonance imaging relaxation time show a linear relation within a certain scope, namely, the higher the nanometer TiO2 content is, the smaller the values of the magnetic resonance imaging spinning-lattice relaxation time and spinning-spinning relaxation time in the sample are; the target bacterium can be quantitatively detected within a certain scope, so that the antibacterial effect of the traditional Chinese medicine formula can be indirectly assessed; the method can be used for screening the formula of the traditional Chinese medicine having a restraining effect to the anaerobic bacteria and can accelerate the developing speed of the traditional Chinese medicine products.

Description

technical field [0001] The invention relates to a screening method of traditional Chinese medicine formula. Background technique [0002] Antibiotics can also cause damage to the human body while sterilizing bacteria, affecting liver, kidney function, and gastrointestinal tract reactions. Abuse of antibiotics may lead to the occurrence of drug resistance in some bacteria, and the treatment of infections will become very difficult. At present, there is almost no antimicrobial drug without drug resistance. It is of positive significance to develop traditional Chinese medicines and formulas with antibacterial effects. [0003] Many traditional Chinese medicines and prescription medicines have antibacterial and anti-inflammatory effects, and the active ingredients and molecular structures of some Chinese herbal medicines have also been fully or partially studied. For example, berberine (berberine), the main component of Coptis chinensis and Phellodendron phellodendron for dys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08
CPCG01N24/088
Inventor 张锦胜郑洪立巫小丹万益琴彭红刘玉环王允圃
Owner NANCHANG UNIV