Composite type mycotoxin adsorbent and preparation method thereof

A mycotoxin adsorption, compound mold technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of weak adsorption capacity, low adsorption rate, low DON adsorption rate, etc., and achieve the effect of good adsorption capacity

Active Publication Date: 2015-04-15
ZHEJIANG FENGHONG NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adsorption capacity of montmorillonite to other types of adsorbents is weak, the adsorptio

Method used

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  • Composite type mycotoxin adsorbent and preparation method thereof
  • Composite type mycotoxin adsorbent and preparation method thereof
  • Composite type mycotoxin adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Evaluation method of mycotoxin adsorption capacity: Prepare a buffer solution of dipotassium hydrogen phosphate, adjust the pH of the solution to 3.0 with phosphoric acid (simulating the pH environment of the animal stomach), add the toxin standard to the buffer solution, and prepare a toxin content of 3MG / KG buffer solution. Add the adsorbent to the toxin buffer solution, shake at a constant temperature of 37°C for 3 hours, centrifuge, test the toxin content in the supernatant with a liquid chromatograph, and set up a control group (buffer solution with toxin added, no adsorbent). Toxin amount in the supernatant (adsorption stage) / toxin content in the control group 100%=% toxin amount adsorbed.

[0028] The adsorption test of high-purity montmorillonite to aflatoxin, zearalenone and ochratoxin, the test method is as above. The basic properties of high-purity montmorillonite: the chemical composition of high-purity montmorillonite is shown in Table 1-1, and the phase c...

Embodiment 2

[0035] Preparation of surface-modified montmorillonite and its ability to absorb toxins.

[0036] Weigh a certain amount of bentonite raw material (same as the raw material described in Example 1), beat, and wet-purify to obtain a purified montmorillonite slurry with a solid content of 3-5%, raise the temperature to 70 ° C, stir at a constant temperature and add surface modification Additive agent (cetyl quaternary ammonium salt: amino acid = 8:2), the amount of surface modifier is 1.0 times of the cation exchange capacity of montmorillonite, constant temperature stirring for 2h, press filter dehydration, washing, drying and milling , to obtain surface-modified montmorillonite. Phase analysis of surface modified montmorillonite such as figure 2 shown.

[0037] Surface modified montmorillonite is the same as Example 1 for the test method of mycotoxin adsorption capacity.

[0038] Table 2-1. Data on the adsorption capacity of surface-modified montmorillonite to mycotoxins

...

Embodiment 3

[0042] Preparation of carbon-coated montmorillonite and its ability to adsorb mycotoxins.

[0043] A certain amount of high-purity montmorillonite was weighed, dispersed in 15% hydrochloric acid solution, stirred and soaked for 1 day, washed and dehydrated to obtain a thick slurry of acidified montmorillonite.

[0044] After cleaning the coconut shell, dry and grind it to obtain clean coconut shell powder, stir and soak the coconut shell powder with 40% hydrochloric acid solution for 2 days, and dehydrate to obtain a thick slurry of acidified coconut shell powder.

[0045] In the state of stirring, the thick slurry of acidified coconut shell powder and the thick slurry of acidified montmorillonite were uniformly mixed according to the mass ratio of 8:2, carbonized at 700°C, and pulverized to obtain carbon-coated montmorillonite. The method for testing the adsorption capacity of carbon-coated montmorillonite to mycotoxins is the same as in Example 1.

[0046] Table 3-1. Mycotoxi...

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Abstract

The invention relates to a composite type mycotoxin adsorbent comprising 20-80% of high-purity montmorillonite, 0-40% of surface-modified montmorillonite and 0-40% of carbon-coated montmorillonite. The surface-modified montmorillonite is prepared by modification with a cationic or non-ionic compound as a surface modifier; the carbon-coated montmorillonite is obtained by mixing evenly a carbon source material acidified thick slurry with an acidified montmorillonite thick slurry and then carrying out high temperature calcination activation. The high-purity montmorillonite is mainly used for adsorption of aflatoxin; the surface-modified montmorillonite is mainly used for adsorption of zearalenone and ochratoxin; the carbon-coated montmorillonite is mainly used for adsorption of vomitoxin; and through synergism effects after compositing of various components, the product is allowed to have good adsorption capacity on various mycotoxins.

Description

technical field [0001] The invention relates to a composite type mycotoxin adsorbent and a preparation method thereof. Background technique [0002] Mildew of crops such as grains and grains is a common natural phenomenon. According to the estimates of the Food and Agriculture Organization of the United Nations (FAO), an average of 25% of the world's crops are polluted by mycotoxins every year, and an average of 2% of the grains cannot be used due to severe mildew, causing huge economic losses. In South China, East China and even North China, there is more rainfall during the harvest season, and crops are often polluted by mold when they are in the field. [0003] The mycotoxins that have a greater impact on livestock and poultry mainly include: aflatoxin, zearalenone, ochratoxin, deoxynivalenol, T2 toxin, etc. The molecular structure of aflatoxin is a dihydrofuran ring and an oxinone, which is a type of hepatotoxin, which mainly causes animal liver enlargement, lesion and...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/12B01J20/30
Inventor 李静静徐子伟邓波宋海明万晶林鸿福赵燕廖永明
Owner ZHEJIANG FENGHONG NEW MATERIAL
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