Aloe extractive as methanal trapping agent and preparation method thereof

A formaldehyde trapping agent and technology of aloe extract, which is applied in the field of aloe extract and its preparation, can solve the problems of irritating odor, high volatility, unsuitable for large-scale use, etc.

Inactive Publication Date: 2010-08-18
爱美瑞新环保科技(武汉)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an aloe extract as a formaldehyde trapping agent and its preparation method, to ov

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: An aloe extract as a formaldehyde trap, prepared by using aloe as a raw material, and the preparation process includes the following steps:

[0025] Step 1: Hydrolyze the aloe gel: squeeze the aloe gel into juice, adjust the pH to 2.0 with 6mol / L hydrochloric acid, react at 100℃ for 5h, neutralize the hydrolysate with 20% NaOH by mass fraction, and then A small amount of impurities are removed from the centrifuge to obtain aloe gel hydrolysate. This step can hydrolyze the aloe vera gel and expose more amino groups.

[0026] Step 2: Under the protection of nitrogen, the above-mentioned aloe gel hydrolysate is added with the initiator cerium ammonium nitrate and acrylamide respectively. The mass ratio of the aloe gel hydrolyzate and the initiator cerium nitrate is 1:0.1 (with aloe gel Hydrolyzed liquid based on dry basis), the molar ratio of hydroxyl and acrylamide in the aloe gel hydrolyzed liquid is 1:6, and the three are evenly mixed and reacted at 50°C for 4 ho...

Embodiment 2

[0028] Example 2: An aloe extract as a formaldehyde trap, prepared by using aloe as a raw material, and the preparation process sequentially includes the following steps:

[0029] Step 1: Hydrolyze the aloe vera gel: squeeze the aloe vera gel into juice, adjust the pH to 8.5 with 20% NaOH, add 0.2% alkaline protease (based on the mass of the protein in the aloe vera gel), and heat up to 50 After 3 hours of reaction, the temperature is raised to 100°C to inactivate the enzyme, and the impurities in the product are removed in a centrifuge to obtain aloe gel hydrolysate;

[0030] Step 2: Under the protection of nitrogen, the above-mentioned aloe gel hydrolysate is added with initiator cerium ammonium nitrate and acrylamide respectively, and the mass ratio of the aloe gel hydrolyzate and initiator cerium ammonium nitrate is 1:0.4 (with aloe gel Hydrolyzed liquid based on dry basis), the molar ratio of hydroxyl and acrylamide in the aloe gel hydrolyzed liquid is 1:4, and the three are m...

Embodiment 3

[0032] Example 3: An aloe extract as a formaldehyde trap, prepared by using aloe as a raw material, and the preparation process includes the following steps:

[0033] Step 1: Hydrolyze the aloe vera gel: squeeze the aloe vera gel into juice, adjust the pH to 3.5 with 3mol / L hydrochloric acid, add 1% acid protease (based on the mass of the protein in the aloe vera gel), and heat up to 45 After 5 hours of reaction, the temperature is raised to 100°C to inactivate the enzyme, and a small amount of impurities are removed in the centrifuge to obtain the aloe gel hydrolysate;

[0034] Step 2: Under the protection of nitrogen, the above-mentioned aloe gel hydrolysate is added with the initiator potassium permanganate and acrylamide, and the mass ratio of the aloe gel hydrolyzate and the initiator potassium permanganate is 1:0.2 (based on aloe Gel hydrolysate based on dry basis), the molar ratio of hydroxyl and acrylamide in the aloe gel hydrolysate is 1:5, and the three are mixed uniforml...

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PUM

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Abstract

The invention relates to an aloe extractive as methanal trapping agent and a preparation method thereof. The prior art has the problems of large volatility, irritant rare delicacy, secondary harm on human body and unfitness for mass use in the preparation technology of the methanal trapping agent. The invention takes natural aloe as raw material and modifies amylose in aloe gel hydrolysate on amino derivatization and then the amylose and amination collagen protein are compounded for obtaining the methanal trapping agent. Outcome of the invention contains collagen protein modified outcome, aloe protein, the amylose and the like. The amino in molecules is mainly used to eliminate the methanal, has small volatility and almost no rare delicacy and does not cause secondary hurt on human body in the use process. The invention can not only eliminate free formaldehyde in the air and reduce methanal release in man-made boards but also reduce free formaldehyde content in leather and fur. The invention has good application foreground.

Description

Technical field [0001] The invention relates to the technical field of environmentally friendly products, in particular to an aloe extract as a formaldehyde trapping agent and a preparation method thereof. Background technique [0002] Formaldehyde is a highly toxic substance. Formaldehyde not only dissociates in the air, but also remains in man-made panels, leather and fur. It ranks second on the priority control list of toxic chemicals in my country, and is harmful to indoor air. Be in the first place. The International Agency for Research on Cancer (IARC) in its publication in June 2004 raised formaldehyde from a suspected carcinogen originally classified as Category 2A to a Category 1 carcinogen. This conclusion was reached after an expert group of 26 scientists from 10 countries evaluated the existing carcinogenic evidence of formaldehyde. People's long-term exposure to low concentrations of formaldehyde can cause physical decline, susceptibility to colds, hair loss, loss o...

Claims

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Application Information

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IPC IPC(8): A61L9/013A62D3/30B01D53/72A61L101/56
Inventor 王学川任龙芳罗媛媛罗敏强涛涛
Owner 爱美瑞新环保科技(武汉)有限公司
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