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Process for removing aflatoxin in peanut oil through adsorption

A technology of aflatoxin and peanut oil, applied in the direction of fat production, fat oil/fat production, fat oil/fat refining, etc., can solve the problems of low adsorption efficiency, inapplicability, failure to meet the national edible oil standards, etc., and achieve the goal of reducing oil loss Effect

Pending Publication Date: 2020-08-07
冀中能源邢台矿业集团有限责任公司油脂分公司
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  • Summary
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  • Description
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Problems solved by technology

Currently commercially available mycotoxin adsorbents are mainly added to feed, but because the adsorption materials are not easy to separate from the materials, they cannot be used in the fields of edible oil and food processing, and the adsorption materials cannot be reused, resulting in waste of resources. The adsorption process is cumbersome, the adsorption efficiency is low, and it cannot meet the national edible oil standard

Method used

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  • Process for removing aflatoxin in peanut oil through adsorption
  • Process for removing aflatoxin in peanut oil through adsorption
  • Process for removing aflatoxin in peanut oil through adsorption

Examples

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preparation example Construction

[0053] In order to further optimize the above-mentioned technical scheme, the preparation method of modified attapulgite comprises the following steps:

[0054] 1, the attapulgite clay is mixed with sodium hydroxide and water according to a mass ratio of 100: (2.0~3.0): 1 to carry out alkalization modification, to obtain a pH of 10~12 alkalized attapulgite;

[0055] II. Roasting the alkalized attapulgite obtained in step I to obtain modified attapulgite.

[0056] In particular, the calcination temperature in step II is 300°C-350°C, and the calcination time is 2-3h.

[0057] In order to further optimize the above-mentioned technical scheme, the deodorization treatment process in step (5) is specifically as follows: the clear oil obtained by filtering in step (4) is heated under negative pressure for 2-3 hours to obtain edible oils and fats.

Embodiment 1

[0060] A kind of technology that adsorption method removes aflatoxin in peanut oil, described technology specifically comprises the steps:

[0061] (1) Pressed crude oil: Shelling the mature and naturally dried peanuts of the year to obtain peanut kernels, and then pressing to obtain peanut pressed crude oil, and storing them under low temperature conditions for future use;

[0062] (2) Ultraviolet light irradiation: The peanut pressed crude oil obtained in step (1) is treated with ultraviolet light irradiation for 60-80 minutes; wherein, the technical parameters of ultraviolet light irradiation treatment are: the intensity of ultraviolet light is 600μw / cm 2 , the ultraviolet light source is UVA (315 ~ 400nm);

[0063] (3) Elution: add 0.3% water of pressed crude oil mass to the pressed crude oil treated by ultraviolet light irradiation in step (2), add perlite and bentonite when stirring and cooling down to 35°C, and continue stirring until the oil temperature Decrease to 20...

Embodiment 2

[0067] A kind of technology that adsorption method removes aflatoxin in peanut oil, described technology specifically comprises the steps:

[0068] (1) Pressed crude oil: Shelling the mature and naturally dried peanuts of the year to obtain peanut kernels, and then pressing to obtain peanut pressed crude oil, and storing them under low temperature conditions for future use;

[0069] (2) Ultraviolet light irradiation: The peanut pressed crude oil obtained in step (1) is treated with ultraviolet light irradiation for 60-80 minutes; wherein, the technical parameters of ultraviolet light irradiation treatment are: the intensity of ultraviolet light is 600-1500 μw / cm 2 , the ultraviolet light source is UVA (315 ~ 400nm), UVC (200 ~ 275nm) or UVA (315 ~ 400nm) + UVC (200 ~ 275nm);

[0070] (3) Elution: add water with a mass of 0.3-0.6% of the pressed crude oil to the pressed crude oil treated by ultraviolet light irradiation in step (2), and add modified attapulgite when the tempe...

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Abstract

The invention discloses a process for removing aflatoxin in peanut oil through adsorption. The process specifically comprises the following steps: (1) squeezing of crude oil; (2) ultraviolet irradiation; (3) elution; (4) filtering; and (5) refining treatment. According to the method, aflatoxin is degraded by adopting ultraviolet irradiation; then the problem of aflatoxin residues in the peanut oilis solved by utilizing elution of an adsorbent; the method does not cause secondary pollution and can maximally protect the color, the fragrance, the taste and the nutritional ingredients of the peanut oil from damage; the aflatoxin B1 in the peanut oil can be effectively removed by selecting and using the magnetic mesoporous silica adsorbent; modified attapulgite prepared in the invention can achieve the functions of deacidification, dephosphorization and aflatoxin B1 removal at the same time; and oil treated by the modified attapulgite can directly reach national standards in China, and refining treatment is not needed; and the adsorption process disclosed by the invention is suitable for industrial production and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of vegetable oil production, and in particular relates to a method for removing toxic substances in peanut oil, in particular to an adsorption method for removing aflatoxin in peanut oil. Background technique [0002] Aflatoxin (AFT) is a secondary metabolite produced by fungi such as Aspergillus flavus and A. parasiticus. At present, there are more than 20 kinds of aflatoxins that have been isolated and identified, and the common ones are AFB1, AFB2, AFG1, AFG2, AFM1, and AFM2. The International Agency for Research on Cancer classified aflatoxins as Class I carcinogens in 1993, among which AFB1 is recognized as the most carcinogenic substance. Aflatoxins have strong thermal stability and can only be cracked when heated above 280°C. Aflatoxin exists in a wide range and is one of the common pollutants in food in developing countries. It is very easy to contaminate agricultural products such as peanuts, corn...

Claims

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Application Information

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IPC IPC(8): C11B1/06C11B3/00C11B3/10
CPCC11B1/06C11B3/10C11B3/001
Inventor 兰志合张占洪李峰赵江涛赵尧兴刘军磊
Owner 冀中能源邢台矿业集团有限责任公司油脂分公司
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