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Method for reducing anisidine value of grease by adopting macroporous adsorption resin

A technology of anisidine value and pore adsorption, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problem of reducing oil anisidine, etc., and achieve the effect of simple equipment, high efficiency, and low production and operation costs

Pending Publication Date: 2021-07-23
吉林省百利生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the technical problem to be solved by the present invention is to provide a method for reducing the anisidine value of oils and fats by using macroporous adsorption resin, which can be carried out in conjunction, and effectively solves the quality problems caused by the secondary oxidation of oils and fats in the oil industry , the treatment effect is safer and more reliable, and the product quality is greatly improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Prepare the anisidine value of 23.39 (GBT24304-2009 test method) linseed oil with n-hexane dilution concentration of 30%, to obtain the upper column liquid, the macroporous adsorption resin after the upper column activation treatment, keep the temperature of the resin column at 50 ° C, the flow rate When the test result is greater than 15, stop collecting the effluent, and rotate the collected liquid at 110°C to recover n-hexane to obtain the treated oil.

[0037] According to the GBT24304-2009 test method, the anisidine value of the treated oil was detected, the resin was effectively adsorbed for 48 hours, the anisidine value of the mixed solution was 10.20, and the anisidine value was reduced by 56%.

Embodiment 2

[0039] Prepare the anisidine value to be 25.42 (GBT24304-2009 test method) and the hemp oil is diluted with n-hexane and the concentration is 50%, to obtain the upper column liquid, and the macroporous adsorption resin after the upper column activation treatment, keep the temperature of the resin column at 50°C, and the flow rate When the test result is greater than 15, stop collecting the effluent, and rotate the collected liquid at 110°C to recover n-hexane to obtain the treated oil.

[0040] According to the GBT24304-2009 test method, the anisidine value of the treated oil was detected, the resin was effectively adsorbed for 36 hours, the anisidine value of the mixed solution was 11.28, and the anisidine value was reduced by 55.6%.

Embodiment 3

[0042] The used resin in Example 1 was regenerated. Regeneration method: first pass 2BV of n-hexane to replace the residual oil in the resin; then pass 2BV of ethanol and pass 1BV of desalted water. Soak the macroporous adsorption resin in desalinated water for more than 24 hours, put 7% v / v hydrochloric acid with 2BV volume of the resin on the column at a flow rate of 1BV / h, then wash with desalinated water until the pH of the effluent is > 3, and configure 5% hydrogen Put sodium oxide on the column with a flow rate of 1 BV / h and a total volume of 2BV, then wash with desalted water until the conductivity of the effluent water is less than 30us / cm, and finally use 95% ethanol on the column with a flow rate of 1BV / h and a total volume of 2BV, and then use n-hexane column, flow rate 1BV / h, total volume 2BV, standby

[0043] Configure 50% linseed oil with n-hexane (the anisidine value of the raw material is 27.53) to obtain the upper column liquid, the flow rate is 0.5BV / h, coll...

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Abstract

The invention provides a method for reducing the anisidine value of grease by adopting macroporous adsorption resin, which comprises the following steps of: diluting grease by using a solvent, performing dynamic adsorption by using the macroporous adsorption resin, collecting effluent, and stopping collecting the effluent until the effluent is detected to reach the upper limit of a required value; and removing the solvent from the collected effluent to obtain the treated grease. Compared with the prior art, the method has the advantages that the anisidine value of the grease is reduced through continuous flow adsorption by the macroporous adsorption resin, and the problem that the anisidine value is increased due to secondary processing, storage and the like of the grease in the grease production process is effectively solved; and the macroporous adsorption resin has the advantages of selective adsorption, simple equipment, simple operation, low production and operation cost, high anisidine value characterization substance removal efficiency and no secondary pollution to the product, and can be recycled, and the method is superior to a traditional intermittent treatment method adopting a reducing agent, and can be widely applied to the grease industry.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a method for reducing the anisidine value of oil by using a macroporous adsorption resin. Background technique [0002] During the production process and storage process of oil, oil is easily oxidized due to the influence of many factors such as temperature and light. The existing method to reduce the peroxide value of oil is to use activated carbon to remove after vacuum high-temperature adsorption, intermittent operation, the oil loss is large, and the anisidine value of the oil after the second high-temperature treatment increases. After the peroxide value reaches the index requirement, The increase of anisidine value means that the primary oxidation product of oil is transformed into a secondary oxidation product, which greatly reduces the quality of oil. [0003] The current literature and patents disclose that reducing agents can be used to reduce the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/10
CPCC11B3/10
Inventor 范明莲于士龙柴建
Owner 吉林省百利生物科技有限公司