CN101804215A - Aloe extractive as methanal trapping agent and preparation method thereof - Google Patents
Aloe extractive as methanal trapping agent and preparation method thereof Download PDFInfo
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- CN101804215A CN101804215A CN 201010140610 CN201010140610A CN101804215A CN 101804215 A CN101804215 A CN 101804215A CN 201010140610 CN201010140610 CN 201010140610 CN 201010140610 A CN201010140610 A CN 201010140610A CN 101804215 A CN101804215 A CN 101804215A
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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
The present invention relates to the environment-friendly products technical field, be specifically related to a kind of Aloe extract as methanal trapping agent and preparation method thereof.
Background technology
Formaldehyde is a kind of more highly toxic material that has, and formaldehyde not only is free in the air, also remains in artificial board, leather and the fur, and it is preferentially controlled at China's toxic chemical and is in second on the list, and the harm in room air belongs to first.International cancer research institution (IARC) rises to the 1st class carcinogen with formaldehyde by the suspect carcinogen of classifying the 2A class originally as in June, 2004 in its publication.This conclusion is to draw after estimating from the existing carcinogenic evidence of expert group's PARA FORMALDEHYDE PRILLS(91,95) of 26 scientists' compositions of 10 countries.The formaldehyde that people contact low concentration for a long time can cause that body constitution descends, easy catching a cold, alopecia, loss of appetite, weight loss, weakness, persistency headache and insomnia etc., severe patient also can cause the cell nucleus gene sudden change, the reparation of the crosslinked and DNA of dna single key and protein cross and resistance DNA damage etc., the formaldehyde of high concentration is all toxic for central nervous system, immune system, liver, and exciting eye conjunctiva, respiratory mucosa and producing shed tears, watery nasal discharge, the conjunctivitis that causes, pharyngolaryngitis, asthma, bronchitis and allergic disease.At present, methanal trapping agent commonly used mainly contains carbamide, tripolycyanamide, Dexol, hypochlorous acid, acetonedicarboxylic acid dimethyl ester etc., but these material volatility are big, and the zest abnormal flavour is arranged, and there is the secondary injury in human body, is unsuitable for a large amount of uses.
Summary of the invention
The object of the present invention is to provide a kind of Aloe extract as methanal trapping agent and preparation method thereof, big to overcome the volatility that prior art exists, the zest abnormal flavour is arranged, there is the secondary injury in human body, be unsuitable for a large amount of problems of using.
For achieving the above object, technical scheme provided by the invention is:
A kind of Aloe extract as methanal trapping agent, it is prepared by following method, and this method comprises the steps: successively
Step 1, employing acid system or enzyme process are hydrolyzed to Aloe gel;
Step 2, the Aloe gel hydrolyzate is carried out the amino derivatization modification: the Aloe gel hydrolyzate is under protection of nitrogen gas, add initiator and acrylamide respectively, described initiator is ammonium ceric nitrate or potassium permanganate, wherein the mass ratio of Aloe gel hydrolyzate and initiator is 1: 0.1～0.4 (in the butt of Aloe gel hydrolyzate), the mol ratio of hydroxyl and acrylamide is 1: 3～6 in the Aloe gel hydrolyzate, react 2～6h at 30～60 ℃ behind three's mix homogeneously, reaction finishes the acrylamide of back Removal reaction, thereby makes the amination Aloe;
Step 3, composite: according to mass ratio is 0.8～1: 0.8～1 ratio, amination Aloe and amination collagen protein is carried out composite, can obtain methanal trapping agent.
In the above-mentioned preparation method step 1, acid system is that Aloe gel is pressed into juice, transfers pH to 2.0～4.5 with acid, react 4～8h down at 90～120 ℃, with mass fraction is 20%NaOH neutralizing hydrolysis liquid, removes small amount of impurities then in centrifugal separator, promptly gets the Aloe gel hydrolyzed solution.
In the above-mentioned steps one, described acid is hydrochloric acid, sulphuric acid or acetic acid.
Above-mentioned enzyme process is that Aloe gel is pressed into juice, with enzyme Aloe gel is hydrolyzed, and reaction is warming up to 100 ℃ behind 2～5h and makes enzyme deactivation, goes out a spot of impurity in centrifugal separator, promptly gets the Aloe gel hydrolyzed solution.
Above-mentioned enzyme is single enzyme or compound enzyme, specifically is alkaline protease, neutral protease, trypsin or acid protease, or the compound enzyme of acid protease and pectase.
A kind of preparation method of the Aloe extract as methanal trapping agent comprises the steps: successively
Step 1, employing acid system or enzyme process are hydrolyzed to Aloe gel;
Step 2, the Aloe gel hydrolyzate is carried out the amino derivatization modification: the Aloe gel hydrolyzate is under protection of nitrogen gas, add initiator and acrylamide respectively, described initiator is ammonium ceric nitrate or potassium permanganate, wherein the mass ratio of Aloe gel hydrolyzate and initiator is 1: 0.1～0.4 (in the butt of Aloe gel hydrolyzate), the mol ratio of hydroxyl and acrylamide is 1: 3～6 in the Aloe gel hydrolyzate, react 2～6h at 30～60 ℃ behind three's mix homogeneously, reaction is removed unreacted acrylamide after finishing, thereby makes the amination Aloe;
Step 3, composite: according to mass ratio is 0.8～1: 0.8～1 ratio, amination Aloe and amination collagen protein is carried out composite, can obtain methanal trapping agent.
In the above-mentioned preparation method step 1, acid system is that Aloe gel is pressed into juice, transfers pH to 2.0～4.5 with acid, react 4～8h down at 90～120 ℃, with mass fraction is 20%NaOH neutralizing hydrolysis liquid, removes small amount of impurities then in centrifugal separator, promptly gets the Aloe gel hydrolyzed solution.
In the above-mentioned steps one, described acid is hydrochloric acid, sulphuric acid or acetic acid.
In the above-mentioned preparation method step 1, enzyme process is that Aloe gel is pressed into juice, with enzyme Aloe gel is hydrolyzed, and reaction is warming up to 100 ℃ behind 2～5h and makes enzyme deactivation, goes out a spot of impurity in centrifugal separator, promptly gets the Aloe gel hydrolyzed solution.
Above-mentioned enzyme is single enzyme or compound enzyme, specifically is alkaline protease, neutral protease, trypsin or acid protease, or the compound enzyme of acid protease and pectase.
Compared with prior art, advantage of the present invention is:
Aloe be a kind ofly beautify, the natural green plant of environment purification, the difference of it and other flowers is, general flowers discharge oxygen by photosynthesis daytime, give off carbon dioxide at night, and Aloe is not only put oxygen daytime, can also absorb at night the carbon dioxide in room, purify the air of a room and mosquito dispersing etc.Aloe still is a kind of natural air monitor, and it can absorb harmful poisonous gases such as airborne formaldehyde, sulfur dioxide, carbon monoxide.Therefore people are placed in Aloe indoorly usually, so not only have ornamental value, but also can beautify the environment.But absorption of plant self and processing still are limited after all, in order to make full use of and bring into play the characteristics of this natural green plant, the effect that the present invention finds to utilize amino in the Aloe gel hydrolyzate and formaldehyde to react and fully catch formaldehyde to reach through a large amount of experiment, but only the amino quantity in the Aloe gel hydrolyzate that obtains through hydrolysis is limited, the effect of catching formaldehyde is unsatisfactory, so in order to improve aloetic aldehydes removal effect, again the polysaccharide in the Aloe gel hydrolyzate is carried out the amino derivatization modification, then itself and amination collagen protein are carried out compositely, obtain methanal trapping agent.Contain materials such as collagen-modified product, Aloe albumen and polysaccharide in the product of the present invention, mainly utilize the amino in the molecule to reach the effect of removing formaldehyde, volatility is little, basic free from extraneous odour, in use can not cause the secondary injury, have a good application prospect human body.Not only can be used for eliminating the burst size of methanal in free formaldehyde of air and the reduction artificial board, can also be used for reducing the free content of formaldehyde of leather and fur.
The specific embodiment:
Below in conjunction with embodiment the present invention is done and to explain.
Embodiment 1: a kind of Aloe extract as methanal trapping agent is that raw material is prepared and obtains with the Aloe, and described preparation process comprises the steps:
Step 1: Aloe gel is hydrolyzed: Aloe gel is pressed into juice, hydrochloric acid with 6mol/L is transferred pH to 2.0, reacts 5h down at 100 ℃, is 20%NaOH neutralizing hydrolysis liquid with mass fraction, in centrifugal separator, remove small amount of impurities then, promptly get the Aloe gel hydrolyzed solution.This step can make the Aloe gel hydrolysis, exposes more amino.
Step 2: above-mentioned Aloe gel hydrolyzate is under protection of nitrogen gas; add initiator ammonium ceric nitrate and acrylamide respectively; the quality proportioning of Aloe gel hydrolyzed solution and initiator cerous nitrate hinge is 1: 0.1 (in the butt of Aloe gel hydrolyzed solution); the mol ratio of hydroxyl and acrylamide is 1: 6 in the Aloe gel hydrolyzed solution, reacts 4h at 50 ℃ behind three's mix homogeneously.Reaction finishes the back and is warming up to 125 ℃ removing unreacted acrylamide in Rotary Evaporators, thereby makes Aloe amination derivant.
Step 3: the ratio that according to mass ratio is 1: 1, carrying out Aloe amination derivant, amination collagen protein (collagen protein being carried out amination modified making by ethylenediamine) composite is 30% methanal trapping agent to strengthen the aldehydes removal effect, can obtain solid content.
Embodiment 2: a kind of Aloe extract as methanal trapping agent is that raw material is prepared and obtains with the Aloe, and described preparation process comprises the steps: successively
Step 1: Aloe gel is hydrolyzed: Aloe gel is pressed into juice, transfer pH to 8.5 with 20%NaOH, add 0.2% alkaline protease (based on proteinic quality meter in the Aloe gel) again, be warming up to 50 ℃, be warming up to 100 ℃ behind the reaction 3h and make enzyme deactivation, in centrifugal separator, remove the impurity in the product, promptly get the Aloe gel hydrolyzed solution;
Step 2: above-mentioned Aloe gel hydrolyzate is under protection of nitrogen gas; add initiator ammonium ceric nitrate and acrylamide respectively; the quality proportioning of Aloe gel hydrolyzed solution and initiator ammonium ceric nitrate is 1: 0.4 (in the butt of Aloe gel hydrolyzed solution); the mol ratio of hydroxyl and acrylamide is 1: 4 in the Aloe gel hydrolyzed solution, reacts 5h at 60 ℃ behind three's mix homogeneously.Reaction finishes the back and is warming up to 130 ℃ removing unreacted acrylamide in Rotary Evaporators, thereby makes the Aloe aminoderivative.
Step 3: according to mass ratio is 0.8: 1 ratio, Aloe amination derivant and amination collagen protein is carried out composite, can obtain solid content and be 35% methanal trapping agent.
Embodiment 3: a kind of Aloe extract as methanal trapping agent is to be that raw material is prepared and obtains with the Aloe, and described preparation process once comprises the steps:
Step 1: Aloe gel is hydrolyzed: Aloe gel is pressed into juice, transfer pH to 3.5 with 3mol/L hydrochloric acid, add 1% acid protease (based on proteinic quality meter in the Aloe gel) again, be warming up to 45 ℃, be warming up to 100 ℃ behind the reaction 5h and make enzyme deactivation, in centrifugal separator, go out a spot of impurity, promptly get the Aloe gel hydrolyzed solution;
Step 2: above-mentioned Aloe gel hydrolyzate is under protection of nitrogen gas; add initiator potassium permanganate and acrylamide respectively; the quality proportioning of Aloe gel hydrolyzed solution and initiator potassium permanganate is 1: 0.2 (in the butt of Aloe gel hydrolyzed solution); the mol ratio of hydroxyl and acrylamide is 1: 5 in the Aloe gel hydrolyzed solution, reacts 2h at 30 ℃ behind three's mix homogeneously.Reaction finishes the back and is warming up to 130 ℃ removing unreacted acrylamide in Rotary Evaporators, thereby makes the Aloe aminoderivative.
Step 3: according to mass ratio is 1: 0.8 ratio, Aloe amination derivant, amination collagen protein is carried out composite, can obtain methanal trapping agent (solid content is 25%).
Embodiment 4: a kind of Aloe extract as methanal trapping agent is to be that raw material is prepared and obtains with the Aloe, and described preparation process once comprises the steps:
Step 1: Aloe gel is hydrolyzed: Aloe gel is pressed into juice, transfer pH to 3.0 with 4.5mol/L hydrochloric acid, add 1% acid protease (based on proteinic quality meter in the Aloe gel) again, be warming up to 55 ℃, be warming up to 100 ℃ behind the reaction 2h and make enzyme deactivation, in centrifugal separator, go out a spot of impurity, promptly get the Aloe gel hydrolyzed solution;
Step 2: above-mentioned Aloe gel hydrolyzate is under protection of nitrogen gas; add initiator potassium permanganate and acrylamide respectively; the quality proportioning of Aloe gel hydrolyzed solution and initiator potassium permanganate is 1: 0.3 (in the butt of Aloe gel hydrolyzed solution); the mol ratio of hydroxyl and acrylamide is 1: 3 in the Aloe gel hydrolyzed solution, reacts 6h at 40 ℃ behind three's mix homogeneously.Reaction finishes the back and is warming up to 120 ℃ removing unreacted acrylamide in Rotary Evaporators, thereby makes the Aloe aminoderivative.
Step 3: according to mass ratio is 0.8: 1 ratio, Aloe amination derivant, amination collagen protein is carried out composite, promptly obtains methanal trapping agent (solid content is 25%).
The usage of this methanal trapping agent is directly it to be sprayed in the room air, or it is painted on unvarnished furniture positive and negative; Also can be used in the wet processing of leather and fur, to reduce the content of formaldehyde in the leather goods.
Claims (10)
1. Aloe extract as methanal trapping agent, it is prepared by following method, and this method comprises the steps: successively
Step 1, employing acid system or enzyme process are hydrolyzed to Aloe gel;
Step 2, the Aloe gel hydrolyzate is carried out the amino derivatization modification: the Aloe gel hydrolyzate is under protection of nitrogen gas, add initiator and acrylamide respectively, described initiator is ammonium ceric nitrate or potassium permanganate, wherein the mass ratio of Aloe gel hydrolyzate and initiator is 1: 0.1～0.4 (in the butt of Aloe gel hydrolyzate), the mol ratio of hydroxyl and interior alkene amide is 1: 3～6 in the Aloe gel hydrolyzate, react 2～6h at 30～60 ℃ behind three's mix homogeneously, reaction is removed unreacted acrylamide after finishing, thereby makes the amination Aloe;
Step 3, composite: according to mass ratio is 0.8～1: 0.8～1 ratio, amination Aloe and amination collagen protein is carried out composite, can obtain methanal trapping agent.
2. a kind of Aloe extract as claimed in claim 1 as methanal trapping agent, it is characterized in that: in the described preparation method step 1, acid system is that Aloe gel is pressed into juice, transfer pH to 2.0～4.5 with acid, react 4～8h down at 90～120 ℃, with mass fraction is 20%NaOH neutralizing hydrolysis liquid, removes small amount of impurities then in centrifugal separator, promptly gets the Aloe gel hydrolyzed solution.
3. a kind of Aloe extract as methanal trapping agent as claimed in claim 2 is characterized in that: in the described step 1, described acid is hydrochloric acid, sulphuric acid or acetic acid.
4. a kind of Aloe extract as claimed in claim 1 as methanal trapping agent, it is characterized in that: in the described preparation method step 1, enzyme process is that Aloe gel is pressed into juice, with enzyme Aloe gel is hydrolyzed, be warming up to 100 ℃ behind reaction 2～5h and make enzyme deactivation, in centrifugal separator, go out a spot of impurity, promptly get the Aloe gel hydrolyzed solution.
5. a kind of Aloe extract as claimed in claim 4 as methanal trapping agent, it is characterized in that: described enzyme is single enzyme or compound enzyme, specifically be alkaline protease, neutral protease, trypsin or acid protease, or the compound enzyme of acid protease and pectase.
6. the preparation method of a kind of Aloe extract as methanal trapping agent as claimed in claim 1 comprises the steps: successively
Step 1, employing acid system or enzyme process are hydrolyzed to Aloe gel;
Step 2, the Aloe gel hydrolyzate is carried out the amino derivatization modification: the Aloe gel hydrolyzate is under protection of nitrogen gas, add initiator and acrylamide respectively, described initiator is ammonium ceric nitrate or potassium permanganate, wherein the mass ratio of Aloe gel hydrolyzate and initiator is 1: 0.1～0.4 (in the butt of Aloe gel hydrolyzate), the mol ratio of hydroxyl and acrylamide is 1: 3～6 in the Aloe gel hydrolyzate, react 2～6h at 30～60 ℃ behind three's mix homogeneously, remove unreacted interior alkene amide after reaction finishes, thereby make the amination Aloe;
Step 3, composite: according to mass ratio is 0.8～1: 0.8～1 ratio, amination Aloe and amination collagen protein is carried out composite, can obtain methanal trapping agent.
7. the preparation method of a kind of Aloe extract as methanal trapping agent as claimed in claim 6, it is characterized in that: in the described preparation method step 1, acid system is that Aloe gel is pressed into juice, transfer pH to 2.0～4.5 with acid, react 4～8h down at 90～120 ℃, with mass fraction is 20%NaOH neutralizing hydrolysis liquid, removes small amount of impurities then in centrifugal separator, promptly gets the Aloe gel hydrolyzed solution.
8. the preparation method of a kind of Aloe extract as methanal trapping agent as claimed in claim 7, it is characterized in that: in the described step 1, described acid is hydrochloric acid, sulphuric acid or acetic acid.
9. the preparation method of a kind of Aloe extract as methanal trapping agent as claimed in claim 6, it is characterized in that: in the described preparation method step 1, enzyme process is that Aloe gel is pressed into juice, with enzyme Aloe gel is hydrolyzed, be warming up to 100 ℃ behind reaction 2～5h and make enzyme deactivation, in centrifugal separator, go out a spot of impurity, promptly get the Aloe gel hydrolyzed solution.
10. the preparation method of a kind of Aloe extract as methanal trapping agent as claimed in claim 9, it is characterized in that: described enzyme is single enzyme or compound enzyme, specifically be alkaline protease, neutral protease, trypsin or acid protease, or the compound enzyme of acid protease and pectase.
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| CN102247751A (en) * | 2010-12-21 | 2011-11-23 | 刘青 | Spraying agent for reducing harmful substances in finishing and preparation method thereof |
| CN102698304A (en) * | 2012-05-25 | 2012-10-03 | 上海复振科技有限公司 | Plant source compound chemical odor removal agent, preparation method and application thereof |
| CN102698580A (en) * | 2012-05-25 | 2012-10-03 | 上海复振科技有限公司 | Plant source compound formaldehyde clear spray, and preparation method and application thereof |
| CN104206935A (en) * | 2014-07-18 | 2014-12-17 | 渤海大学 | Preparation method and application of endogenous formaldehyde removing agent for shredded squid |
| CN105597261A (en) * | 2015-12-31 | 2016-05-25 | 山东新港企业集团有限公司 | Biomass formaldehyde eliminating agent and preparing method thereof |
| CN105816986A (en) * | 2015-01-05 | 2016-08-03 | 刘林 | Preparation method of pure plant household formaldehyde scavenger |
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| CN102247751B (en) * | 2010-12-21 | 2013-04-03 | 刘青 | Spraying agent for reducing harmful substances in finishing and preparation method thereof |
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| CN105597261A (en) * | 2015-12-31 | 2016-05-25 | 山东新港企业集团有限公司 | Biomass formaldehyde eliminating agent and preparing method thereof |
| CN107261801A (en) * | 2017-08-11 | 2017-10-20 | 浙江笨鸟科技有限公司 | Finishing pollution eliminating smell agent |
| CN107694325A (en) * | 2017-09-26 | 2018-02-16 | 苏州百益倍肯新材料科技有限公司 | A kind of special efficacy biology enzyme is except aldehyde air cleaning agent and preparation method thereof |
| CN107774105A (en) * | 2017-10-27 | 2018-03-09 | 于建伟 | A kind of compound protein formaldehyde scavenger, its preparation method and application |
| CN107670493A (en) * | 2017-10-31 | 2018-02-09 | 山东德慧环境科技有限公司 | A kind of animal protein formaldehyde scavenger, its preparation method and application |
| CN113637810A (en) * | 2021-09-03 | 2021-11-12 | 百草边大生物科技(青岛)有限公司 | Large biological leather with functions of removing peculiar smell and absorbing formaldehyde |
| CN116899534A (en) * | 2023-09-14 | 2023-10-20 | 山西木清心环保科技有限公司 | Formaldehyde scavenging medicament, preparation method and application |
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