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Method for removing aflatoxin from vegetable oil by using ultraviolet-magnesium silicate gel column combined detoxification method

A technology for the combined removal of aflatoxin and aflatoxin, which is applied in the direction of separation methods, chemical instruments and methods, and alkali metal compounds, can solve the problem of incomplete removal of adsorbents in vegetable oil, incomplete removal of aflatoxin, and loss of nutritional components in vegetable oil and other issues, to achieve the effect of excellent high radiation performance, excellent UV resistance, and economical price

Inactive Publication Date: 2019-04-02
GUANGXI NANNING SHENGQIAN TECH DEV CO LTD
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  • Description
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems of incomplete removal of aflatoxin in vegetable oil, poor detoxification effect, incomplete removal of adsorbent in vegetable oil, large residual amount of harmful substances, serious loss of nutrient components of vegetable oil and the like in the prior art, and provide a A kind of method that utilizes ultraviolet ray-magnesium silicate gel column to remove aflatoxin in vegetable oil

Method used

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Examples

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Embodiment 1

[0032] The preparation process of the magnesium silicate gel column used in this example is as follows: take 50 parts of sepiolite and put it into the reactor, add 150 parts of NaOH solution with a concentration of 5 mol / L, stir at a speed of 100 r / min, and stir for 10 min , add dropwise 100 parts of 5mol / L MgCl 2solution, the stirring speed is 25r / min, the stirring time is 20min, after fully mixing, the reaction temperature is 130°C for hydrothermal reaction for 6h, after aging, centrifugal separation, discard the supernatant, wash the precipitate with ethanol, and put it under the condition of 110°C After drying, the filter cake was pulverized to obtain magnesium silicate powder; 50 parts of magnesium silicate powder prepared by hydrothermal method, 7 parts of modified montmorillonite powder and 1.0 part of coupling agent were added to 43 parts of Stir and mix the polyvinylidene fluoride solution to form a casting film, let it stand for defoaming for 20 hours, use a scraper ...

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Abstract

The invention belongs to the field of grain and oil quality and safety, and particularly relates to a method for removing aflatoxin from vegetable oil by using an ultraviolet-magnesium silicate gel column combined detoxification method. The method comprises: taking vegetable oil, and placing in a glassware, wherein the thickness of the oil layer is controlled at 1.5-3 cm, the length of an irradiation zone is 0.5-1.5 m, and the flow rate is 3-10 m<2> / h; irradiating the vegetable oil by using near ultraviolet wavelength (UVA waveband, wavelength of 375-390 nm) excitation fluorescence to detoxify; and after the ultraviolet excitation fluorescence irradiation, detoxifying the vegetable oil by using a magnesium silicate gel column. With the method of the present invention, a variety of aflatoxins in vegetable oil can be effectively removed, the detoxification rate can achieve more than 99.6%, impurities and microorganisms in vegetable oil can be removed, and the nutrients in vegetable oil can be well retained; and the method has advantages of simple equipment, easy operation and stable detoxification effect.

Description

technical field [0001] The invention belongs to the field of grain and oil quality safety, and specifically relates to a method for removing aflatoxin in vegetable oil by using an ultraviolet-magnesium silicate gel column combined with a detoxification method. Background technique [0002] Aflatoxin (Aflatoxin referred to as AFT) is a general term for a class of substances with similar chemical structures. It is a secondary metabolite produced by Aspergillus flavus and Aspergillus parasiticus. The main structure is dihydrofuran ring and oxinone (coumarin) , the former is a toxic substance, and the latter may be related to carcinogenicity. At present, there are more than 20 species whose structures have been determined, including B1, B2, M1, M2, etc. Among them, B1 is the most toxic, its toxicity is 10 times that of potassium cyanide, 68 times that of arsenic, and its carcinogenicity is dimethylnitrosamine 75 times that of carcinogen, which is the strongest chemical carcinog...

Claims

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Application Information

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IPC IPC(8): C11B3/00B01J20/26B01J20/28B01J20/30B01D15/20B01D15/34B01D15/38
CPCB01D15/206B01D15/34B01D15/3871B01J20/10B01J20/12B01J20/26B01J20/28038C11B3/001
Inventor 钟安祺
Owner GUANGXI NANNING SHENGQIAN TECH DEV CO LTD
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