CN1059307C - Aflatoxins removing agent and its preparing process - Google Patents
Aflatoxins removing agent and its preparing process Download PDFInfo
- Publication number
- CN1059307C CN1059307C CN95121104A CN95121104A CN1059307C CN 1059307 C CN1059307 C CN 1059307C CN 95121104 A CN95121104 A CN 95121104A CN 95121104 A CN95121104 A CN 95121104A CN 1059307 C CN1059307 C CN 1059307C
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- Prior art keywords
- silver
- potassium
- aflatoxin
- complex
- periodate
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Abstract
The present invention relates to an aflatoxin remover which is a K [5] H [2] (Ag (10 [6] 2) complex. Potassium persulfate and sodium hydroxide are added to silver nitrate to react to generate high silver oxide; then potassium hydroxide and potassium periodate are added to the high silver oxide to react to generate a periodate silver complex; impurities are filtered off. An evaporative crystallization finished product or the periodate silver complex prepared according to certain proportion is used for dipping agricultural products containing aflatoxin and other articles containing the aflatoxin in order to remove toxic agents, reduce the wastage caused by mildew and guarantee the good health of human beings.
Description
The invention belongs to agricultural, livestock breeding and food gas defence detoxification technique field, particularly a kind of aflatoxin remover.
Aspergillus flavus is a kind of fungi, separates having obtained the first strain aspergillus flavus as far back as initial stage in sixties people.Aspergillus flavus produces aflatoxin (being called for short AFT) under certain condition, and this AFT is a kind of of various mycotoxin toxic maximums.The big quantity research of AFT has now been proved conclusively 17 kinds of chemical constitutions.No matter which kind of AFT contains two furans cumarin structures, can think that also AFT is the derivative that contains two furans cumarin.Molecular diameter generally about 10A °, 81 toxicity maximums among these 17 kinds of AFT, its toxicity is 100 times of dichlorvos, is 68 times of arsenic, and is also bigger 10 times more than than the potassium cyanide toxicity of severe toxicity.AFT not only toxicity is big but also heat-resisting, even can not be destroyed fully under 270 ℃ of high temperature.The cardinal symptom that AFT poisons is to cause liver cancer, is one of universally acknowledged strong carcinogenic substance.It extensively is distributed in peanut, corn, grain and goods thereof, beans and the fermented food, and the health of people and animals, poultry is caused very big threat.
Countries in the world to the distribution of AFT, produce malicious condition, physicochemical property, detection method and detoxicating method etc. and carried out big quantity research.The method of removing aflatoxin in general has following several:
(1) prevents and suppress the generation of Aspergillus flavus, thereby remove aflatoxin.This yes a kind of method of effecting a permanent cure is a kind of method of radical cure.But in fact this is impossible, because the decision of the ecological balance of the Nature can not be effected a radical cure extinction.Actual conditions also are like this.Some grain and oil crop had had AFT before having no harvest.And the existence of aspergillus flavus is not equal to the aflatoxin existence.Aspergillus flavus only could produce poison under the condition of being fit to.That is to say that having the mould that produces poison to exist on the food product and not meaning that to have toxin to exist; Do not produce malicious mould and exist, can not guarantee does not have toxin on the product, because toxin can also exist after thalline disappears for a long time.Therefore it will be argued that to utilize and kill or suppress Aspergillus flavus to remove the method for AFT infeasible.
(2) utilize physical method to remove aflatoxin.The general physisorphtion, heating method etc. used.These methods are feasible, but the limitation of method is restricted extensive use, and heating method usually has big destruction to nutrient component.
(3) utilize chemical method to remove aflatoxin.This respect is in the U.S., all have achievement in research preferably in Japan, suppresses to remove AFT as Japan with the alcohol mixed solution of cinnamic acid and vanillin, and this is the two key addition hydrolysis removal AFT that utilize the AFT chemical constitution.
The purpose of this invention is to provide K
5H
2[Ag (IO
6)
2] complex compound, utilize the strong oxidizing property of periodic acid silver complex to destroy aflatoxin (being called for short AFT), remove toxicity and benefit the people.
The present invention adopts following technical scheme for achieving the above object;
Aflatoxin remover---K
5H
2[Ag (IO
6)
2] complex compound utilizes silver nitrate to add potassium peroxydisulfate hydro-oxidation sodium to react and generate high oxidation silver, potassium sulphate, sodium sulphate, sodium nitrate, potassium nitrate and water.
The high oxidation silver hydro-oxidation potassium that above-mentioned reaction is generated adds potassium metaperiodate reaction generation periodic acid silver complex, silver oxide and water, its meso-periodic acid silver complex is dissolved in alkaline aqueous solution, silver oxide is filtered away, again with periodic acid silver complex solution evaporation crystal product or be mixed with solution by a certain percentage and use.
Weight proportion is;
Silver nitrate 10-50 gram potassium peroxydisulfate 25-50 gram
Sodium hydroxide 20-60 gram
Reaction equation is:
4AgNO
3+2K
2S
2O
8+8NaOH
4AgO+K
2SO
4+3Na2SO
4+2NaNO
3+2KNO
3+4H
2O
High oxidation silver 1-5 gram potassium hydroxide 1-5 gram
Potassium metaperiodate 5-20 gram
Reaction equation is:
4AgO+6KOH+4KIO
4 2K
2H
2[Ag(IO
6)
2]+Ag
2O+H
2O
Its technological process is:
At first add potassium persulfate solution in the 40-90 ℃ of NaOH aqueous solution, add silver nitrate aqueous solution then, under agitation constant temperature is 15 minutes, generates black precipitate, filters the back with the diluted sodium hydroxide solution washing, and is air-dry.
Secondly add in the KOH aqueous solution and press the periodic acid potassium and the high oxidation silver of reaction equation amount of calculation, stir the constant temperature certain hour down at 40-80 ℃, reaction solution is brownish red, filters and removes silver oxide and impurity, leaches finished product.
Good effect of the present invention:
The article that will contain aflatoxin are immersed in the periodic acid silver of 1-5PPN and the 10PPN persulfate aqueous solution 5-10 minute, take out article, clean with flushing with clean water, can make agricultural product prevent to go mouldy by above-mentioned processing method, cut the waste and economic loss, can prevent aflatoxicosis again, prevent the liver cancer diseases extension, benefit the nation and the people.
Be the specific embodiment of the invention below:
(concentration is to add 50 in 20 grams/500ml) to restrain potassium peroxydisulfates to 40 ℃ of sodium hydrate aqueous solutions, add 10 gram silver nitrates stirring constant temperature then and can generate black high oxidation silver precipitation in 30 minutes, filter, use the dilute sodium hydroxide aqueous solution washing precipitation with sintered glass funnel, air-dry, can get high oxidation silver.
In 5 gram KOH, add 200ml water and make it dissolving, then high oxidation silver is added 1 gram, heated solution to 45 ℃ under agitation adds 4 gram periodic acid potassium, continuing constant temperature stirred 5 hours, reaction solution is brownish red to be ended, remove by filter silver oxide and impurity with sintered glass funnel, the filtrate evaporate to dryness gets yellow crystal, is product.
Claims (1)
1, a kind ofly add potassium peroxydisulfate with silver nitrate, hydro-oxidation sodium reacts, and generates high oxidation silver, uses high oxidation silver hydro-oxidation potassium again, adds the potassium metaperiodate reaction and generates periodic acid silver K
5H
2[Ag (IO
6)
2] complex compound, being applied to the water sterilization sterilization, colibacillary sterilization is characterized in that: described K
5H
2[Ag (IO
6)
2] complex compound, it also can be applicable to crop products or other article that contain aflatoxin flood disinfection, the article that will contain aflatoxin are immersed in 1-5PPN periodic acid silver complex and the 10PPN persulfate aqueous solution and flooded 5-10 minute, take out article, clean with flushing with clean water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95121104A CN1059307C (en) | 1995-12-28 | 1995-12-28 | Aflatoxins removing agent and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95121104A CN1059307C (en) | 1995-12-28 | 1995-12-28 | Aflatoxins removing agent and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1152999A CN1152999A (en) | 1997-07-02 |
| CN1059307C true CN1059307C (en) | 2000-12-13 |
Family
ID=5082401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95121104A Expired - Fee Related CN1059307C (en) | 1995-12-28 | 1995-12-28 | Aflatoxins removing agent and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059307C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113098C (en) * | 1998-06-30 | 2003-07-02 | 广东药学院 | Process for extracting detoxicating enzyme for aflatoxin B1 |
| CN101926360B (en) * | 2009-06-18 | 2014-01-29 | 东华大学 | Novel method for preparing micro-nano multivalent silver by soft chemistry technology |
| CN101857262B (en) * | 2010-06-18 | 2012-04-11 | 苏州邦安新材料科技有限公司 | Novel micro/nano trivalent silver iron compound synthesizing method |
| AU2011291395A1 (en) * | 2010-08-20 | 2013-03-14 | Innovotech, Inc. | Silver iodate compounds having antimicrobial properties |
| CN113349215A (en) * | 2018-09-20 | 2021-09-07 | 晋大纳米科技（厦门）有限公司 | Preparation method of liquid antibacterial agent containing complex silver under acidic condition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223149A (en) * | 1992-05-18 | 1993-06-29 | N. Jonas & Co., Inc. | Trivalent silver water treatment compositions |
| US5336499A (en) * | 1992-01-10 | 1994-08-09 | Antelman Technologies, Ltd. | Molecular crystal device for pharmaceuticals |
-
1995
- 1995-12-28 CN CN95121104A patent/CN1059307C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336499A (en) * | 1992-01-10 | 1994-08-09 | Antelman Technologies, Ltd. | Molecular crystal device for pharmaceuticals |
| US5223149A (en) * | 1992-05-18 | 1993-06-29 | N. Jonas & Co., Inc. | Trivalent silver water treatment compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1152999A (en) | 1997-07-02 |
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Addressee: Kebao Chem. Co., Ltd., Luoyang Document name: Notification of Termination of Patent Right |
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