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Method for reducing content of aflatoxins in raw materials of feed

A technology of aflatoxin and feed raw materials, which is applied in the preservation method of animal feed raw materials, animal feed, food preservation, etc., can solve the problems of animal body weight reduction, tumor and cancer induction, economic loss, etc., and achieve the goal of reducing the content Effect

Inactive Publication Date: 2019-03-19
XICHANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In animal production, once the diet (such as wheat, bran, corn, soybean meal, etc.) is contaminated with aflatoxin, it will lead to a decrease in animal body weight gain and feed conversion rate, or induce tumors and cancers, or even death. causing severe economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The growth environment of embodiment 1 Aspergillus flavus and CO 2 resulting correlation

[0021] The corn is stored in a normal temperature and humidity environment, and the CO is detected by a gas sensor. 2 content. After 10 days of storage, CO in stored corn 2 The rate of production is significantly accelerated, and the average daily CO in the storage container 2 The rate of increase in concentration increased rapidly from 0.10% to 0.46%, a growth rate of 4.6 times. By directly observing the growth of fungi in corn through a microscope, it can be found that the mycelium of Aspergillus flavus grows in large quantities, indicating that CO 2 The accelerated gas production is a consequence of the rapid growth of the A. flavus mycelium.

[0022] Corn storage experiments with the same water content were carried out at 20 °C, 25 °C and 30 °C, and the results showed that under the storage conditions at 20 °C, CO in corn 2 The rate of gas production was low, and no sign...

Embodiment 2

[0024] Example 2 Aspergillus flavus early warning system and antibacterial regulation system

[0025] Aspergillus flavus early warning system and antibacterial adjustment system are set up in the warehouse where the feed is stored; the early warning system for aspergillus flavus includes temperature monitoring sensors, humidity monitoring sensors and carbon dioxide monitoring sensors; Oxygen adjustment device, antibacterial agent spraying device; at least one of temperature monitoring sensor, humidity monitoring sensor and carbon dioxide monitoring sensor will alarm and start the antibacterial adjustment system after exceeding the threshold;

[0026] At this time, the temperature adjusting device adjusts the temperature to be lower than 20°C, the humidity adjusting device adjusts the relative humidity to be lower than 80%, and the oxygen content adjusting device adjusts the oxygen content to be lower than 1%. At the same time, the bacteriostatic agent sprayed by the bacteriost...

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Abstract

The invention discloses a method for reducing the content of aflatoxins in raw materials of a feed. Through researching growth temperature, growth humidity and oxygen content of typical fungi during shelf life of the raw materials of the feed, characteristics of produced CO2 gas, and relationship between the typical fungi and toxin production of aspergillus flavus, relevant regularity is revealed;and a temperature, humidity and gas detection point is set in a warehouse for storing the raw materials of the feed, so that the fungus damage activity of the stored raw materials of the feed can bein online monitoring, an effective early warning method is provided for preventing and controlling pollution of the aflatoxins, and besides, effective emergency measures are started.

Description

technical field [0001] The invention relates to the technical field of biological feed production, in particular to a method for reducing the content of aflatoxin in feed raw materials. Background technique [0002] Aflatoxins (AFT) are mainly highly toxic metabolites produced by Aspergillus flavus and Aspergillus parasiticus, which are highly carcinogenic, mutagenic and teratogenic, and are colorless , Odorless, tasteless, containing a difuran ring and a oxinone (coumarin), the former is the basic toxin structure, the latter is related to carcinogenicity. There are 18 kinds of aflatoxins isolated, which are stable to heat, and 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 [0003] It is stable under acidic conditions and slightly decomposes in strong acidic solutions with a pH value of 1-3. Aflatoxins are soluble in chloroform, acetone ...

Claims

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Application Information

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IPC IPC(8): A23K30/00A23L3/3418A23L3/358
CPCA23L3/3418A23L3/358A23K30/00
Inventor 张志敏龚国利黄志秋王思芦陈永霞莫全志莉康明健毛勇张美丽王燕魏安民
Owner XICHANG COLLEGE
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