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Preparation and application of several common plant extracts

A plant extract and plant technology, applied in the preparation and application of several common plant extracts, can solve the problems of no lack of active groups, difficult purification, low metabolism, etc.

Inactive Publication Date: 2015-12-09
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many living plants, such as Chlorophytum, Tiger Pilan, etc., have been reported to have formaldehyde adsorption. However, when plants are used to absorb pollutants in the air, the absorption rate is easy to reach saturation, and the metabolism of plants is relatively low, so it is difficult to achieve efficient and rapid absorption. Purification, it is impossible to achieve large-scale application
[0005] However, plant extracts from natural sources contain a variety of components, and there are many active groups that can react with formaldehyde in their chemical structures, such as amino groups, phenolic hydroxyl groups, ketone groups, etc., and it is expected to find natural adsorbents for formaldehyde from them. For the development of environmentally friendly products

Method used

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  • Preparation and application of several common plant extracts
  • Preparation and application of several common plant extracts
  • Preparation and application of several common plant extracts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Experimental principle

[0038] Formaldehyde in the air reacts with acetylacetone to form a yellow complex, which is colorimetrically quantified at 414 nm with a spectrophotometer. 2) Preparation of standard curve

[0039] (1) Prepare formaldehyde standard use solution: ρ=10ug / mL, absorb 4.28mL formaldehyde standard stock solution, and dilute it into a 500mL volumetric flask with water.

[0040] (2) Preparation of acetylacetone reagent: Dissolve 50g of ammonium acetate, 6mL of glacial acetic acid and 0.5mL of acetylacetone in 100mL of water.

[0041] (3) Take 10 25mL volumetric flasks, number them respectively, and press figure 1 Sequence of adding samples:

[0042]Add 5.0mL acetylacetone reagent to each of the standard tube and the sample tube, stopper, mix well, place in a water bath at 60°C±1°C for 15min, take it out, and cool it to room temperature with tap water. Use the "0" tube as a blank, and use a 30nm cuvette for color comparison at a wavelength of 414...

Embodiment 2

[0045] Choose a 500mL brown bottle as the airtight compartment, stick the filter paper prepared in advance on the bottle cap; then pre-load the extract to be tested, then use a pipette gun to drop 20uL of formaldehyde on the filter paper of the bottle cap, and quickly cover it Cover, and seal the bottle cap with plastic wrap, absorb under normal pressure for a period of time, take out the extract to be tested, and measure the concentration of formaldehyde contained therein.

[0046] Example 3:

Embodiment 3

[0048] 1) Preparation of Humulus japonicus extract

[0049] Take 50g of fresh Humulus leaves and crush them, add 1000mL of 70% ethanol to soak overnight, extract with ultrasonic wave for 1h, centrifugally filter (10min1000r / min), and filter the filtrate through a 0.45μm microfiltration membrane. The filtrate was collected in a 500mL brown bottle and stored in a refrigerator for later use. The measured pH was 6.75.

[0050] 2) Effect of reaction temperature on formaldehyde adsorption effect

[0051] Take 100mL of the above-mentioned Humulus japonicus extract, according to the device in Example 2, use a pipette gun to inject 20mL of formaldehyde into the filter paper that has been glued on the bottle cap in advance, and place them at 0°C, 5°C, 10°C, and 20°C respectively. , 30°C, and 35°C for 30 minutes; use the same pH value and volume of 70% ethanol as a blank control under the same conditions.

[0052] Sample determination: take four 50mL volumetric flasks, numbered 1-4 res...

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Abstract

The invention relates to extracts from several common plants, preparation method thereof, and application of these extracts in development of a natural formaldehyde adsorbent. The common plants includes: a moraceae plant Humulus scandens (Lour.) Merr., a gramineous plant Oplismenus compositus (Linn.) Beauv., a vitaceae plant Parthenocissus tricuspidata, a urticaceae plant Urtica fissa E.Pritz, a liliaceous plant Sansevieria trifasciata Prain, a leguminous plant Trifolium repens L., and an adiantaceae plant Adiantum capillus-veneris. A research result proves that the plant extracts has excellent adsorption effect on aldehyde in air and can be used for preparing a green and environment-protective product for removing the aldehyde from air.

Description

technical field [0001] The invention relates to a preparation method of an extract obtained from plants, and the use of the extract in the development of a natural formaldehyde adsorbent; the extract can be used for the adsorption of formaldehyde in indoor air. Common plants include the Moraceae Humulus ( Humulus scandens (Lour.)Merr.), Gramineae Bambooleaf Grass ( Oplismenus compositus (Linn.) Beauv.), grape plant creeper ( Parthenocis stricus pidata ), Urticaceae plant Urtica ( Urticafissa E. Pritz ), Liliaceae tiger Piran ( Sansevieria trifasciata Prain), legume clover ( Trifolium repens L.), Adiantum (Adiantum) Adiantum capillus-veneris L.); belongs to the field of natural phytochemistry. Background technique [0002] In recent years, with the substantial improvement of people's living standards, people's lifestyles and concepts have changed greatly. People have higher requirements for the quality of the living environment, and indoor air pollution has attrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
Inventor 梁晓霞张硕林晓娟贺常亮何敏李丽霞吕程李敏王伟力蒙妮
Owner SICHUAN AGRI UNIV
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