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Immunoadsorbent for purifying aflatoxin, sterigmatocystin and cyclopiazonic acid, and composite affinity column

A variegated aspergillus and aflatoxin technology, which is applied in the directions of solid adsorbent liquid separation, selective adsorption, chemical instruments and methods, etc. and other problems to achieve stable performance

Active Publication Date: 2019-08-16
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no related reports on chemical aflatoxin, variegated aspergillus, and cyclopiazonic acid-immune composite affinity columns.

Method used

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  • Immunoadsorbent for purifying aflatoxin, sterigmatocystin and cyclopiazonic acid, and composite affinity column
  • Immunoadsorbent for purifying aflatoxin, sterigmatocystin and cyclopiazonic acid, and composite affinity column
  • Immunoadsorbent for purifying aflatoxin, sterigmatocystin and cyclopiazonic acid, and composite affinity column

Examples

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Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Obtaining of Universal Monoclonal Antibody to Aflatoxin

[0032] The universal anti-aflatoxin monoclonal antibody is produced by the secretion of the hybridoma cell line 1C11 with the preservation number CCTCC NO.C201013, and is specifically prepared in advance according to the method reported in the patent application number 201010245095.5. The preparation method is: the obtained hybridoma cells Strain 1C11 was injected intraperitoneally into BALB / c mice treated with incomplete Freund's adjuvant in advance, and the ascites of the mice was collected, purified and treated to obtain a universal anti-aflatoxin monoclonal antibody. Wherein, the purification method is octanoic acid-ammonium sulfate method, and the specific operation is as follows: the ascites is taken out from the -20°C refrigerator and thawed at room temperature. Filter the mouse ascites with double-layer filter paper, centrifuge the filtered ascites at 4°C, 12000r / min for more than 15min, absorb...

Embodiment 2

[0034] Embodiment 2: Obtaining of anti-aspergillus versicolor monoclonal antibody

[0035]The anti-aspergillus versicolor monoclonal antibody is produced by the secretion of the hybridoma cell line 1C11 with the deposit number CCTCC NO.C2013187, and it is specifically prepared in advance according to the method reported in the patent application number 201410115952.8. The preparation method is: the obtained hybridoma cells Strain ST03 was intraperitoneally injected into BALB / c mice treated with Freund's incomplete adjuvant in advance, and the ascites of the mice was collected, purified and treated to obtain anti-Varistoxin monoclonal antibodies. Wherein, the purification method is octanoic acid-ammonium sulfate method, and the specific operation is as follows: the ascites is taken out from the -20°C refrigerator and thawed at room temperature. Filter the mouse ascites with double-layer filter paper, centrifuge the filtered ascites at 4°C, 12000r / min for more than 15min, absorb...

Embodiment 3

[0037] Example 3: Obtaining of Anti-Cyclopiazonic Acid Monoclonal Antibody

[0038] The anti-cyclopianic acid monoclonal antibody is produced by the hybridoma cell line YTT-2 with the preservation number CCTCC NO.C C201871. details as follows:

[0039] Cyclopiazonic acid monoclonal antibody hybridoma cell line YTT-2 was intraperitoneally injected into BALB / c mice treated with incomplete Freund's adjuvant in advance, the ascites of the mice was collected, and the antibody was purified by octanoic acid-ammonium sulfate method , the specific operation is: filter mouse ascites with double-layer filter paper, centrifuge the filtered ascites at 4°C, 12000r / min for more than 15min, absorb the supernatant, mix the supernatant with 4 times the volume of acetate buffer, and stir While slowly adding n-octanoic acid, the volume of n-octanoic acid required per milliliter of ascites is 30-35 μL, mix at room temperature for 30-60 min, let stand at 4°C for more than 2 h, then centrifuge at 1...

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Abstract

The invention provides an immunoadsorbent for purifying aflatoxin, sterigmatocystin and cyclopiazonic acid, and a composite affinity column. The immunoadsorbent for purifying aflatoxin, sterigmatocystin and cyclopiazonic acid comprises a solid-phase carrier and an anti-aflatoxin monoclonal antibody, an anti-sterigmatocystin monoclonal antibody and an anti-cyclopiazonic acid monoclonal antibody which are coupled to the solid-phase carrier, and the anti-cyclopiazonic acid monoclonal antibody is a monoclonal antibody generated by secretion of a hybridoma cell strain YTT-2 with the preservation number of CCTCC NO.C201871. The aflatoxin, sterigmatocystin and cyclopiazonic acid immune affinity column can be used for purification-detection pre-treatment of samples simultaneously containing threeaflatoxins, mutual intervention and influence can be avoided, the performance is stable, and an economic, rapid, accurate and safe high-efficiency liquid chromatograph-mass spectrometer detection method is established through usage of the affinity column.

Description

technical field [0001] The invention relates to purifying aflatoxin, aspergillus versicolor, cyclopiazonic acid immunoadsorbent and composite affinity column. Background technique [0002] Aspergillus flavus is a common saprophytic fungus with a wide growth temperature range, easy to grow and reproduce in an environment with high temperature and humidity, and can survive and grow and reproduce under extreme environmental conditions. After Aspergillus flavus infects agricultural products such as peanuts, corn, and tree nuts, it can produce a variety of toxic mycotoxins, causing health problems for humans and animals. [0003] Aflatoxins are a group of secondary metabolites with similar structures produced by Aspergillus flavus and Aspergillus parasiticus. They are a group of compounds with difuran ring and coumarin as the basic structure. The chemical structure is very stable and has very strong toxicity and Carcinogenicity, widely present in grains, feedstuffs and their pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/543G01N33/577G01N33/531G01N30/02G01N30/08B01J20/286B01D15/22B01D15/08
CPCG01N33/543G01N33/577G01N33/531G01N30/02G01N30/08B01J20/286B01D15/22B01D15/08G01N2030/067
Inventor 张奇李培武姜俊白艺珍张文
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI