A decolorizing agent capable of reducing the content of aflatoxin in peanut oil

A technology of aflatoxin and decolorizing agent, applied in the field of decolorizing agent, can solve the problems of increasing clay flavor, increasing acid value, increasing peroxide value, etc. Effect

Active Publication Date: 2019-12-03
SHANDONG YUHUANG GRAIN & OIL FOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of using a decolorizing agent to remove aflatoxin is more commonly used activated clay, but it has many defects. The amount of activated clay is relatively large. If the amount is small, the expected decolorization effect will not be achieved, and the amount used is too much , it is easy to cause the peroxide value to increase, thereby increasing the clay flavor; when the activated clay is in contact with the oil, it is easy to cause a small amount of hydrolysis of the oil, resulting in an increase in the acid value of the oil after decolorization; the fuel consumption rate of the activated clay is high, and the activated clay usually contains 25% to 40% fat; food
[0004] Contamination of oil by aflatoxin is more and more common, but the adsorption and detoxification rate of aflatoxin in edible oil by activated clay is low
The existing technology has improved the decolorizing agent, such as "Ye Shengqun et al.: Effects of Edible Oil Adsorption and Decolorizing Agents on the Aflatoxin Content in Vegetable Oil", which verified that activated clay, attapulgite, zeolite, activated carbon and modified montmorillonite were used in In terms of the performance of removing aflatoxin, it has been found that the detoxification rate of the modified montmorillonite with the best effect is only 89%, and it is difficult to remove it from the oil, and there is a certain pollution to the oil
The Chinese invention patent "A Peanut Oil Extraction Method Effectively Removes Aflatoxin" discloses the technology of using enzymatic method to degrade aflatoxin. This method has good effect and good environmental protection performance, but the price of enzyme preparation is relatively expensive, which is easy to increase the burden on enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A decolorizing agent that can reduce the content of aflatoxin in peanut oil, which is prepared according to the following process:

[0025] Step 1) Add twice the weight of hydrochloric acid solution with a mass fraction of 10% to the diatomite, ultrasonically oscillate for 30 minutes, then add sodium dodecylsulfonate accounting for 1% by weight of diatomite, and continue ultrasonically oscillating for 30 minutes. Then centrifuge to collect the precipitate; the ultrasonic power is 2000w;

[0026] Step 2) put calcite, zeolite and sepiolite into the pulverizer according to the mass ratio of 2:2:1 for pulverization, and then grind them into 100-mesh powder;

[0027] Step 3) Put the precipitate obtained in step 1) and the powder obtained in step 2) into the mixer at a mass ratio of 1:2, stir at 500 rpm for 10 minutes to obtain a mixed material, and then mix it with polystyrene microspheres at a ratio of 1:1 The mass ratio is added in the granulator, and then adding the poly...

Embodiment 2

[0030] A decolorizing agent that can reduce the content of aflatoxin in peanut oil, which is prepared according to the following process:

[0031] Step 1) Add twice the weight of hydrochloric acid solution with a mass fraction of 10% to the diatomite, ultrasonically oscillate for 30 minutes, then add sodium dodecylsulfonate accounting for 2% by weight of diatomite, and continue ultrasonically oscillating for 30 minutes. Then centrifuge to collect the precipitate; the ultrasonic power is 2000w;

[0032] Step 2) put calcite, zeolite and sepiolite into the pulverizer according to the mass ratio of 2:2:1 for pulverization, and then grind them into 200-mesh powder;

[0033] Step 3) Put the precipitate obtained in step 1) and the powder obtained in step 2) into the mixer according to the mass ratio of 2:3, stir at 500 rpm for 10 minutes to obtain the mixed material, and then mix it with polystyrene microspheres according to the ratio of 1:1 The mass ratio is added in the granulator...

Embodiment 3

[0036] Soak the used decolorizing agent in water at 50-60°C for 30 minutes, take it out, and place it at 300-350°C for calcination for 3-5 minutes to remove the adsorbate, cool naturally, and then use it again.

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Abstract

The invention belongs to the technical field of decolorizing agents, and discloses a decolorizing agent capable of decreasing aflatoxin content in peanut oil. The decolorizing agent is prepared by the following processes: step (1), performing acid treatment and ultrasonic treatment; step (2), performing crushing and grinding; step (3), performing stirring and granulation; and step (4) performing drying and sintering. The decolorizing agent provided by the invention can effectively remove pigment and aflatoxin, can be used repeatedly, and saves costs for enterprises.

Description

technical field [0001] The invention belongs to the technical field of decolorizing agents, and in particular relates to a decolorizing agent capable of reducing the content of aflatoxin in peanut oil. Background technique [0002] The commonly used adsorbent in the peanut oil refining process is activated clay. Due to its large specific surface area and surface polarity, activated clay can remove pigments and other impurities dissolved in oil or dispersed in oil with colloidal particles, so it has been used in edible oils such as peanut oil, sunflower oil and rapeseed oil. Widely used in decolorization. However, activated clay is prone to side reactions during the decolorization process. The fatty acid double bond is isomerized to produce trans fatty acids, resulting in a decline in oil quality; The economic value of the product; there are also waste residues that pollute the environment, cannot be completely removed from the oil product, and there will be residues that c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01J20/34C11B3/10
CPCB01J20/14B01J20/22B01J20/3408C11B3/10
Inventor 张守民张业沈小刚荣相栋沈常委
Owner SHANDONG YUHUANG GRAIN & OIL FOOD
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