CN101366467A - Ion sieve for removing aflatoxin and preparation method thereof - Google Patents
Ion sieve for removing aflatoxin and preparation method thereof Download PDFInfo
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- CN101366467A CN101366467A CNA2008101522728A CN200810152272A CN101366467A CN 101366467 A CN101366467 A CN 101366467A CN A2008101522728 A CNA2008101522728 A CN A2008101522728A CN 200810152272 A CN200810152272 A CN 200810152272A CN 101366467 A CN101366467 A CN 101366467A
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- ion sieve
- deionized water
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- 229930195730 Aflatoxin Natural products 0.000 title claims abstract description 47
- 239000005409 aflatoxin Substances 0.000 title claims abstract description 47
- XWIYFDMXXLINPU-UHFFFAOYSA-N Aflatoxin G Chemical compound O=C1OCCC2=C1C(=O)OC1=C2C(OC)=CC2=C1C1C=COC1O2 XWIYFDMXXLINPU-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000706 filtrate Substances 0.000 claims abstract description 41
- 239000008367 deionised water Substances 0.000 claims abstract description 37
- 150000002500 ions Chemical class 0.000 claims abstract description 36
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 239000000725 suspension Substances 0.000 claims abstract description 28
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims abstract description 16
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims abstract description 16
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 16
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 14
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 14
- 239000011734 sodium Substances 0.000 claims abstract description 14
- 238000004108 freeze drying Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000012065 filter cake Substances 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000009777 vacuum freeze-drying Methods 0.000 claims abstract description 8
- GNMJFQWRASXXMS-UHFFFAOYSA-M trimethyl(phenyl)azanium;bromide Chemical compound [Br-].C[N+](C)(C)C1=CC=CC=C1 GNMJFQWRASXXMS-UHFFFAOYSA-M 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- 238000001179 sorption measurement Methods 0.000 abstract description 8
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000007863 gel particle Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical class O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
本发明公开了一种去除黄曲霉毒素的离子筛及制备方法，制备方法为：(1)将钠基蒙脱土加入去离子水中，浸泡成悬浮液；(2)将苯基三甲基溴化铵加入去离子水中，搅拌，过滤，得澄清滤液，备用；(3)将CuCl加入氨水中，搅拌，过滤得滤液，备用；(4)将步骤(2)及步骤(3)制得的滤液滴入步骤(1)制得的悬浮液中，静置陈化5－10小时得到均匀凝胶；(5)将均匀凝胶脱除游离水后，用去离子水将滤饼中可溶性物质洗净，再将所得固体真空冷冻干燥，冻干后保持温度在－10℃至0℃，保温1－3小时，研磨过筛，得颗粒状除黄曲霉素的离子筛。本发明的一种去除黄曲霉毒素的离子筛对黄曲霉素吸附速度快，吸附容量高。本发明制备方法简单。The invention discloses an ion sieve for removing aflatoxin and a preparation method thereof. The preparation method is as follows: (1) adding sodium-based montmorillonite into deionized water and soaking it into a suspension; (2) adding phenyl trimethyl bromide Add ammonium chloride into deionized water, stir, and filter to obtain a clarified filtrate for subsequent use; (3) add CuCl to ammonia water, stir, and filter to obtain a filtrate for subsequent use; (4) prepare the filtrate obtained in steps (2) and (3) The filtrate is dropped into the suspension prepared in step (1), and left to age for 5-10 hours to obtain a uniform gel; (5) after removing free water from the uniform gel, use deionized water to remove the soluble matter in the filter cake Washing, then vacuum freeze-drying the obtained solid, keeping the temperature at -10°C to 0°C after freeze-drying, keeping it warm for 1-3 hours, grinding and sieving to obtain a granular ion sieve for removing aflatoxin. The ion sieve for removing aflatoxin of the present invention has fast adsorption speed and high adsorption capacity for aflatoxin. The preparation method of the invention is simple.
Description
Technical field
The present invention relates to a kind of ion sieve and preparation method, particularly relate to a kind of ion sieve and preparation method who removes aflatoxin.
Background technology
At present, remove that the most economical feasible method of aflatoxin is the physics detoxicity method in the food, commonly used has: extraction, absorption method, heat treating process and radiation method.Wherein, extraction is to use ethanol, and the acetone equal solvent comes out the aflatoxin extn in the food, only is applicable to the processing animal feed, and the expense height.Heat treating process is to make the aflatoxin molecular breakdown under HTHP, owing to need temperature very high, equipment is required height, expense height.Radiation method is to utilize infra-red radiation, and ultraviolet irradiation etc. destroy the molecular structure of aflatoxin, but strong ray also can destroy the structure of nutriment.At present used absorption method is to utilize adsorption of aflatoxin molecules such as aluminium silicate salt or zeolite, can reduce nutrient concentrations in the food but add this type of adsorbent in a large number.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, the ion sieve that provide that a kind of adsorption capacity is higher, adsorption rate comparatively fast and can stripping have dysgenic removal aflatoxin to health.
Second purpose of the present invention provides a kind of preparation method who removes the ion sieve of aflatoxin.
A kind of ion sieve of removing aflatoxin, make with following method:
(1) ratio in mass ratio 1:30-50 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 8-16 hour;
(2) ratio in mass ratio 1:10-50 adds the phenyl trimethylammonium bromide in the deionized water, at 60-120r/min, stirs 1-100min, filters, and gets clear filtrate, and is standby;
(3) in the ratio of mass ratio 1:60-100, CuCl is added in the ammoniacal liquor that mass concentration is 18%-30%, stir 10-30min, filter to get filtrate at 60-100r/min, standby;
(4) keeping mixing speed 60-120r/min, pH is 7-9, and under the temperature 25-60 ℃ of condition, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 5-10 hour;
(5) after the even gel that step (4) is obtained removes free water, with deionized water solable matter in the filter cake is cleaned, again with gained solid vacuum freeze drying, maintain the temperature at-10 ℃ to 0 ℃ after the freeze-drying, be incubated 1-3 hour, grinding is sieved, and gets the ion sieve that graininess is removed aflatoxins.
Preferably step (1) is: the ratio in mass ratio 1:40 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 12 hours.
Step (2) is: the ratio in mass ratio 1:30 adds the phenyl trimethylammonium bromide in the deionized water, at 80r/min, stirs 50min, filters, and gets clear filtrate, and is standby.
Step (3) is: in the ratio of mass ratio 1:80, it is in 25% the ammoniacal liquor that CuCl is added mass concentration, stirs 20min at 80r/min, filters to get filtrate, standby.
Step (4) is: keeping mixing speed 80r/min, pH is 8, and under 40 ℃ of conditions of temperature, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 8 hours.
A kind of preparation method who removes the ion sieve of aflatoxin, be made up of following step:
(1) ratio in mass ratio 1:30-50 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 8-16 hour;
(2) ratio in mass ratio 1:10-50 adds the phenyl trimethylammonium bromide in the deionized water, at 60-120r/min, stirs 1-100min, filters, and gets clear filtrate, and is standby;
(3) in the ratio of mass ratio 1:60-100, CuCl is added in the ammoniacal liquor that mass concentration is 18%-30%, stir 10-30min, filter to get filtrate at 60-100r/min, standby;
(4) keeping mixing speed 60-120r/min, pH is 7-9, and under the temperature 25-60 ℃ of condition, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 5-10 hour;
(5) after the even gel that step (4) is obtained removes free water, with deionized water solable matter in the filter cake is cleaned, again with gained solid vacuum freeze drying, maintain the temperature at-10 ℃ to 0 ℃ after the freeze-drying, be incubated 1-3 hour, grinding is sieved, and gets the ion sieve that graininess is removed aflatoxins.
Preferably step (1) is: the ratio in mass ratio 1:40 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 12 hours.
Step (2) is: the ratio in mass ratio 1:30 adds the phenyl trimethylammonium bromide in the deionized water, at 80r/min, stirs 50min, filters, and gets clear filtrate, and is standby.
Step (3) is: in the ratio of mass ratio 1:80, it is in 25% the ammoniacal liquor that CuCl is added mass concentration, stirs 20min at 80r/min, filters to get filtrate, standby.
Step (4) is: keeping mixing speed 80r/min, pH is 8, and under 40 ℃ of conditions of temperature, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 8 hours.
A kind of ion sieve of removing aflatoxin of the present invention is fast to the aflatoxins adsorption rate, the adsorption capacity height.When being used to handle aflatoxins content and being higher than the food of 10 μ g/kg, guaranteeing out that aflatoxins content is lower than under the prerequisite of 2.0 μ g/kg, average adsorption capacity can reach 390 μ gAFB/g and can stripping to health dysgenic material do not arranged greater than general adsorbent.Method of the present invention is simple.
The specific embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1
A kind of ion sieve of removing aflatoxin, make with following method:
(1) at 25 ℃-30 ℃, in the beaker of 1000mL, add 10g sodium-based montmorillonite (MMT) and 490ml deionized water, 60r/min stirs, and leaves standstill 12 hours, and fully swelling forms suspension;
(2) take by weighing 6.4836g phenyl trimethylammonium bromide (PTMAB) in addition and be dissolved in the 100mL deionized water,, stir 10min, filter, get clear filtrate with triangular funnel at 80r/min, standby;
(3) taking by weighing 1.08g CuCl, to be dissolved in the 100mL mass concentration be in 25% the ammoniacal liquor, stirs 20min at 80r/min, filters to get filtrate, standby;
(4) then under the stirring condition of 60r/min, pH is 8, under 40 ℃ of conditions of temperature, with PTMAB solution and CuCl ammonia spirit respectively at continuing evenly to add in the suspension that step (1) makes with the speed of 2.0ml/min in the separatory funnel, the sample that obtains when finishing is white pulpous state system, the particle diameter that wherein evenly is scattered here and there is the gel particle of 2-7mm, after the ageing 5 hours, suction filtration, spend deionised water chloride ion content to the wash water and with the freeze-drying after freezing 12 hours of gained solid, maintain the temperature at 0 ℃ after the freeze-drying less than 10mg/L, be incubated 2 hours, ground 120 mesh sieves and promptly get the ion sieve that graininess is removed aflatoxins.This finished product is used to handle the aqueous solution that aflatoxins content is 1.0ppm, is guaranteeing that water outlet aflatoxins content is lower than under the prerequisite of 5.0ppb, and average adsorbance is the 396ugAFB/g ion sieve.
Embodiment 2
(1) at 25 ℃-30 ℃, in the beaker of 1000mL, add 5g sodium-based montmorillonite (MMT) and 200ml ionized water, 50r/min stirs, and leaves standstill 12 hours, and fully swelling forms suspension;
(2) take by weighing 2.23g phenyl trimethylammonium bromide (PTMAB) in addition and be dissolved in the 60mL deionized water,, stir 10min, filter, get clear filtrate with triangular funnel at 80r/min, standby;
(3) taking by weighing 0.55g CuCl, to be dissolved in the 60mL mass concentration be in 25% the ammoniacal liquor, stirs 20min at 80r/min, filters to get filtrate, standby;
(4) then under the stirring condition of 50r/min, pH is 8, under 40 ℃ of conditions of temperature, with PTMAB solution and CuCl ammonia spirit respectively at continuing evenly to add in the suspension that step (1) makes with the speed of 10ml/min in the separatory funnel, the sample that obtains when finishing is white pulpous state system, the particle diameter that wherein evenly is scattered here and there is the gel particle of 2-7mm, after the ageing 6 hours, suction filtration, spend deionised water chloride ion content to the wash water and with the freeze-drying after freezing 12 hours of gained solid, maintain the temperature at 0 ℃ after the freeze-drying less than 10mg/L, be incubated 2 hours, ground 120 mesh sieves and promptly get the ion sieve that graininess is removed aflatoxins.This finished product is used to handle the aqueous solution that aflatoxins content is 1.0ppm, is guaranteeing that water outlet aflatoxins content is lower than under the prerequisite of 5.0ppb, and average adsorbance is the 394.5ug/g ion sieve.
Embodiment 3
A kind of ion sieve of removing aflatoxin, make with following method:
(1) ratio in mass ratio 1:30 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 8 hours;
(2) ratio in mass ratio 1:10 adds the phenyl trimethylammonium bromide in the deionized water, at 120r/min, stirs 1min, filters, and gets clear filtrate, and is standby;
(3) in the ratio of mass ratio 1:60, it is in 30% the ammoniacal liquor that CuCl is added mass concentration, stirs 20min at 80r/min, filters to get filtrate, standby;
(4) keeping mixing speed 120r/min, pH is 8, and under 60 ℃ of conditions of temperature, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 10 hours;
(5) after the even gel that step (4) is obtained removes free water, with deionized water solable matter in the filter cake is cleaned, again with gained solid vacuum freeze drying, maintain the temperature at-10 ℃ after the freeze-drying, be incubated 3 hours, grinding is sieved, and gets the ion sieve that graininess is removed aflatoxins.
Embodiment 4
A kind of ion sieve of removing aflatoxin, make with following method:
(1) ratio in mass ratio 1:50 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 16 hours;
(2) ratio in mass ratio 1:50 adds the phenyl trimethylammonium bromide in the deionized water, at 60r/min, stirs 100min, filters, and gets clear filtrate, and is standby;
(3) in the ratio of mass ratio 1:100, it is in 18% the ammoniacal liquor that CuCl is added mass concentration, stirs 30min at 60r/min, filters to get filtrate, standby;
(4) keeping mixing speed 60r/min, pH is 7, and under 25 ℃ of conditions of temperature, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 5 hours;
(5) after the even gel that step (4) is obtained removes free water, with deionized water solable matter in the filter cake is cleaned, again with gained solid vacuum freeze drying, maintain the temperature at 0 ℃ after the freeze-drying, be incubated 1 hour, grinding is sieved, and gets the ion sieve that graininess is removed aflatoxins.
Embodiment 5
A kind of ion sieve of removing aflatoxin, make with following method:
(1) ratio in mass ratio 1:40 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 12 hours;
(2) ratio in mass ratio 1:30 adds the phenyl trimethylammonium bromide in the deionized water, at 80r/min, stirs 50min, filters, and gets clear filtrate, and is standby;
(3) in the ratio of mass ratio 1:80, it is in 25% the ammoniacal liquor that CuCl is added mass concentration, stirs 10min at 100r/min, filters to get filtrate, standby;
(4) keeping mixing speed 80r/min, pH is 9, and under 40 ℃ of conditions of temperature, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 8 hours;
(5) after the even gel that step (4) is obtained removes free water, with deionized water solable matter in the filter cake is cleaned, again with gained solid vacuum freeze drying, maintain the temperature at-5 ℃ after the freeze-drying, be incubated 2 hours, grinding is sieved, and gets the ion sieve that graininess is removed aflatoxins.
Claims (10)
1. ion sieve of removing aflatoxin is characterized in that making with following method:
(1) ratio in mass ratio 1:30-50 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 8-16 hour;
(2) ratio in mass ratio 1:10-50 adds the phenyl trimethylammonium bromide in the deionized water, at 60-120r/min, stirs 1-100min, filters, and gets clear filtrate, and is standby;
(3) in the ratio of mass ratio 1:60-100, CuCl is added in the ammoniacal liquor that mass concentration is 18%-30%, stir 10-30min, filter to get filtrate at 60-100r/min, standby;
(4) keeping mixing speed 60-120r/min, pH is 7-9, and under the temperature 25-60 ℃ of condition, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 5-10 hour;
(5) after the even gel that step (4) is obtained removes free water, with deionized water solable matter in the filter cake is cleaned, again with gained solid vacuum freeze drying, maintain the temperature at-10 ℃ to 0 ℃ after the freeze-drying, be incubated 1-3 hour, grinding is sieved, and gets the ion sieve that graininess is removed aflatoxins.
2. a kind of ion sieve of removing aflatoxin according to claim 1, it is characterized in that described step (1) is: the ratio in mass ratio 1:40 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 12 hours.
3. a kind of ion sieve of removing aflatoxin according to claim 1 is characterized in that described step (2) is: the ratio in mass ratio 1:30 adds the phenyl trimethylammonium bromide in the deionized water, at 80r/min, stir 50min, filter, get clear filtrate, standby.
4. a kind of ion sieve of removing aflatoxin according to claim 1, it is characterized in that described step (3) is: in the ratio of mass ratio 1:80, it is in 25% the ammoniacal liquor that CuCl is added mass concentration, stirs 20min at 80r/min, filter to get filtrate, standby.
5. a kind of ion sieve of removing aflatoxin according to claim 1, it is characterized in that described step (4) is: keeping mixing speed 80r/min, pH is 8, under 40 ℃ of conditions of temperature, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 8 hours.
6. preparation method who removes the ion sieve of aflatoxin is characterized in that being made up of following step:
(1) ratio in mass ratio 1:30-50 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 8-16 hour;
(2) ratio in mass ratio 1:10-50 adds the phenyl trimethylammonium bromide in the deionized water, at 60-120r/min, stirs 1-100min, filters, and gets clear filtrate, and is standby;
(3) in the ratio of mass ratio 1:60-100, CuCl is added in the ammoniacal liquor that mass concentration is 18%-30%, stir 10-30min, filter to get filtrate at 60-100r/min, standby;
(4) keeping mixing speed 60-120r/min, pH is 7-9, and under the temperature 25-60 ℃ of condition, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 5-10 hour;
(5) after the even gel that step (4) is obtained removes free water, with deionized water solable matter in the filter cake is cleaned, again with gained solid vacuum freeze drying, maintain the temperature at-10 ℃ to 0 ℃ after the freeze-drying, be incubated 1-3 hour, grinding is sieved, and gets the ion sieve that graininess is removed aflatoxins.
7. a kind of preparation method who removes the ion sieve of aflatoxin according to claim 6, it is characterized in that described step (1) is: the ratio in mass ratio 1:40 adds sodium-based montmorillonite in the deionized water, soaks to become suspension in 12 hours.
8. a kind of preparation method who removes the ion sieve of aflatoxin according to claim 6 is characterized in that described step (2) is: the ratio in mass ratio 1:30 adds the phenyl trimethylammonium bromide in the deionized water, at 80r/min, stir 50min, filter, get clear filtrate, standby.
9. a kind of preparation method who removes the ion sieve of aflatoxin according to claim 6, it is characterized in that described step (3) is: in the ratio of mass ratio 1:80, it is in 25% the ammoniacal liquor that CuCl is added mass concentration, stirs 20min at 80r/min, filter to get filtrate, standby.
10. a kind of preparation method who removes the ion sieve of aflatoxin according to claim 6, it is characterized in that described step (4) is: keeping mixing speed 80r/min, pH is 8, under 40 ℃ of conditions of temperature, the filtrate that step (2) and step (3) are made splashes in the suspension that step (1) makes, and obtains even gel in still aging 8 hours.
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| CNA2008101522728A CN101366467A (en) | 2008-10-09 | 2008-10-09 | Ion sieve for removing aflatoxin and preparation method thereof |
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| CNA2008101522728A CN101366467A (en) | 2008-10-09 | 2008-10-09 | Ion sieve for removing aflatoxin and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692483A (en) * | 2015-03-19 | 2015-06-10 | 王林双 | Preparation method of compound ion sieve structure filter core |
| CN109364885A (en) * | 2018-11-24 | 2019-02-22 | 烟台大学 | Preparation method of sodium carboxymethyl cellulose-collagen-montmorillonite composite Aspergillus flavus adsorption material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692483A (en) * | 2015-03-19 | 2015-06-10 | 王林双 | Preparation method of compound ion sieve structure filter core |
| CN109364885A (en) * | 2018-11-24 | 2019-02-22 | 烟台大学 | Preparation method of sodium carboxymethyl cellulose-collagen-montmorillonite composite Aspergillus flavus adsorption material |
| CN109364885B (en) * | 2018-11-24 | 2021-03-12 | 烟台大学 | Preparation method of sodium carboxymethylcellulose-collagen-montmorillonite composite aspergillus flavus adsorption material |
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