Method for removing aflatoxin in biological raw materials by composting

A technology for aflatoxin and biological raw materials, which is applied in the preparation of organic fertilizers, fertilizers made from biological wastes, organic fertilizers, etc., can solve the problems of poor effect, secondary pollution, and high cost, and achieve obvious effects and treatment costs. The effect of low and convenient operation and processing

Inactive Publication Date: 2018-07-24
HENAN AGRICULTURAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, although these methods can remove aflatoxin in raw materials to a certain extent, there are some problems, such as high cost, secondary pollution, poor effect, etc. Therefore, it is still necessary to remove aflatoxin in biological raw materials new ways of exploring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The biological raw material that this embodiment is aimed at is corn stalks contaminated with aflatoxin, and the specific treatment process is as follows:

[0031] (1) Biological raw material pretreatment

[0032] Cut the biological raw material corn stalks (aflatoxin contamination) into about 0.5-3 cm for later use;

[0033] (2) Adding active fermentation ingredients for fermentation

[0034] In this example, beer yeast mud is used for fermentation treatment. During the treatment, on a dry basis, biological raw material: beer yeast mud = 1:0.2 (m / m), after mixing evenly, add water twice the mass of the mixed material (adjust the water content rate of about 65%), after mixing evenly, keep warm at 30°C for 3 days, and stir 3 times during the period to ensure uniform fermentation effect; .

[0035] After the treatment, the aflatoxin content in the biological raw materials was measured, and the results showed that the aflatoxin content had been reduced from 60.7 μg / Kg b...

Embodiment 2

[0037] The biological raw material that this embodiment is aimed at is the corn cob polluted with aflatoxin, and during concrete treatment, process is as follows:

[0038] (1) Biological raw material pretreatment

[0039] Crush the biological raw material corn cob (contaminated by aflatoxin) to about 10 mesh for later use;

[0040] (2) Adding active fermentation ingredients for fermentation

[0041] In this example, beer yeast mud is used for fermentation treatment. During the treatment, on a dry basis, biological raw material: beer yeast mud = 1:0.15 (m / m), after mixing evenly, add water 3 times the mass of the mixed material (adjust the water content rate of about 75%), after mixing evenly, keep warm at 30°C for 4 days, and stir 5 times during the period to ensure uniform fermentation effect; .

[0042] After the treatment, the aflatoxin content in the biological raw materials was measured, and the results showed that the aflatoxin content had been reduced from 53.6 μg / Kg...

Embodiment 3

[0044] The biological raw material that this embodiment is aimed at is the peanut meal contaminated with aflatoxin, and during specific treatment, the process is as follows:

[0045] (1) Biological raw material pretreatment

[0046] The biological raw material peanut meal does not need to be processed, but is directly processed;

[0047] (2) Adding active fermentation ingredients for fermentation

[0048] In this example, beer yeast mud is used for fermentation treatment. During the treatment, on a dry basis, biological raw material: peanut meal = 1:0.2 (m / m), after mixing evenly, add water twice the mass of the mixed material (adjust the moisture content 65%), after mixing evenly, keep warm at about 25°C for 4 days, and stir 5 times during the period to ensure uniform fermentation effect; after fermentation, remove water by filtration, and the obtained biological raw materials are harmless biological raw materials after degradation of aflatoxin.

[0049] After the treatment...

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PUM

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Abstract

The invention belongs to the technical field of biological fermenting, and particularly relates to a method for removing aflatoxin in biological raw materials by composting. The method is characterized in that the biological raw materials comprise biomass waste using a carbon element as the main component, and/or biomass waste using a nitrogen element as the main component. The method specificallycomprises the following steps of pretreatment of biological raw materials, adding of active fermenting components for fermenting, and the like, wherein the active fermenting components comprise saccharomyces cerevisiae paste, edible fungi residues or human and animal excreta. The treatment method has the advantages that the operation process is more convenient and rapid; the effect of degrading the aflatoxin is more obvious; the treatment cost is lower, the foundation is better laid for the food safety and human body health; the better practical value and the popularization and application meaning are realized.

Description

technical field [0001] The application belongs to the technical field of biological fermentation, and in particular relates to a method for composting and removing aflatoxin from biological raw materials. Background technique [0002] Aflatoxins (AFT) are mainly produced by Aspergillus flavus ( Aspergillus flavus ) and Aspergillus parasitica ( Aspergillus parasiticus ) and other fungi produced a class of highly toxic metabolites with strong carcinogenic, mutagenic and teratogenic properties. Aflatoxin is colorless, odorless, and tasteless. Its molecular structure contains a difuran ring and an oxinone (coumarin). The former is the basic toxin structure, and the latter is related to carcinogenesis. There are 18 kinds of aflatoxins that have been isolated, and they are stable to heat. The high-temperature-resistant aflatoxin B1 toxin (AFB1) can only be decomposed at 268-269°C; it can be completely destroyed by adding strong alkali and 5% sodium hypochlorite; but in acidic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F15/00C05G1/00C05F17/00
CPCC05C9/00C05D3/02C05F5/002C05F17/00C05F17/80C05F5/008C05F11/00C05F5/00C05F3/00C05F3/04Y02W30/40
Inventor 宋安东谢慧李爱云王石磊齐留云王志敏王风芹毛国涛张宏森李志敏
Owner HENAN AGRICULTURAL UNIVERSITY
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