Agent for reducing acid value of used cooking oil and method for regenerating used cooking oil using same

A technology of edible oil and acid value, applied in the direction of edible oil/fat, oil/fat refining, recovery of oil/fatty acid from waste, etc., can solve the problems of lack of color improvement and low ammonia adsorption.

Inactive Publication Date: 2018-08-31
KYOWA CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since hydrotalcite has a small amount of ammonia adsorption, although it is helpful to improve the acid value, it is still lacking in the improvement of hue.

Method used

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  • Agent for reducing acid value of used cooking oil and method for regenerating used cooking oil using same
  • Agent for reducing acid value of used cooking oil and method for regenerating used cooking oil using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Kyowa Chemical Industry Co., Ltd. Mg-Al type hydrotalcite compound "KYOWAAD 500SH" was used for regeneration of edible oil as a preparation for reducing the acid value of edible oil after use.

[0101] Molar ratio (MgO / Al 2 o 3 ) is 5.94, BET specific surface area is 101.6m 2 / g, micropore volume is 0.779cm 3 / g.

[0102] Deacidification test 1) In the edible rapeseed oil (acid value judgment value: 2.5) heated to 120° C., add 5 wt % of the above-mentioned preparation for reducing the acid value of edible oil after use, and heat and stir for 30 minutes. Let stand at room temperature for 10 minutes and filter. The acid value of the filtered regenerated oil was judged by the color of the test paper AV-CHECK for the degree of deterioration of heating oil, and the result was 0 to 0.5. The filtered regenerated oil was carbonized, and the residue was dissolved with dilute hydrochloric acid, and the magnesium ions dissolved in the oil were quantified by ICP, and the resul...

Embodiment 2

[0105] Kyowa Chemical Industry Co., Ltd. Mg-Al type hydrotalcite compound "KYOWAAD1000" was used as a preparation for reducing the acid value of edible oil after use, and was used for regeneration of edible oil.

[0106] Molar ratio (MgO / Al 2 o3 ) is 4.6, BET specific surface area is 111.8m 2 / g, micropore volume is 0.876cm 3 / g.

[0107] Deacidification test 1) In the edible rapeseed oil (acid value judgment value: 2.5) heated to 120° C., add 5 wt % of the above-mentioned preparation for reducing the acid value of edible oil after use, and heat and stir for 30 minutes. Let stand at room temperature for 10 minutes and filter. The acid value of the filtered regenerated oil was judged by the color of the test paper AV-CHECK for the degree of deterioration of heating oil, and the result was 0 to 0.5.

[0108] Deacidification test 2) In edible rapeseed oil (acid value judgment value: 4.0) heated to 120° C., add 5 wt % of the above-mentioned preparation for reducing the acid va...

Embodiment 3

[0110] Kyowa Chemical Industry Co., Ltd. Mg-Al type hydrotalcite compound "KYOWAAD 300SN" was used as a preparation for reducing the acid value of edible oil after use, and was used for regeneration of edible oil.

[0111] Molar ratio (MgO / Al 2 o 3 ) is 2.58, BET specific surface area is 240.7m 2 / g, micropore volume is 0.882cm 3 / g.

[0112] Deacidification test 1) In the edible rapeseed oil (acid value judgment value: 2.5) heated to 120° C., add 5 wt % of the above-mentioned preparation for reducing the acid value of edible oil after use, and heat and stir for 30 minutes. Let stand at room temperature for 10 minutes and filter. The acid value of the filtered regenerated oil was judged by color using AV-CHECK, a test paper for determining the degree of deterioration of heating oil, and the result was 0.5.

[0113] Deacidification test 2) In edible rapeseed oil (acid value judgment value: 4.0) heated to 120° C., add 5 wt % of the above-mentioned preparation for reducing t...

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Abstract

Problem: To provide an agent which is for reducing the acid value of used cooking oil, which has the required effect as an agent for regenerating used cooking oil, and a method for regenerating used cooking oil using the agent. Solution: The agent for reducing the acid value of used cooking oil contains, as an active ingredient, a hydrotalcite compound, and has a deacidification capability to reduce the acid value by 70% or more. Furthermore, the agent has a deacidification capability to reduce yellowness caused by degradation by 15%. The hydrotalcite compound has been subjected to a sinteringtreatment at 150-400 DEG C. The hydrotalcite compound is in the form of particles having an average particle size of 50-200 [mu]m.

Description

technical field [0001] The present invention relates to a preparation for reducing the acid value of used edible oil, which uses a hydrotalcite compound as an active ingredient, and a method for regenerating used edible oil using the same. Background technique [0002] It is well known that in the household or restaurant industry, food manufacturing industry, the edible oil used in the cooking of fried food will be hydrolyzed by heat and the moisture contained in the fried species to generate free fatty acid, and the free fatty acid will be thermally oxidized And generate peroxide, etc., leading to deterioration of edible oil. The used edible oil deteriorated by cooking fried food will change color to brown, release strange smell, and viscosity will also increase, and repeated use of the used edible oil will damage the flavor of fried food, resulting in poor results. As a result, the edible oil deteriorates and deteriorates each time it is used, so it is usually discarded a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B13/00A23D9/02C11B3/10
CPCA23D9/04A23L5/276C11B3/10A23D9/02A23V2002/00A23L5/273C11B13/00Y02W30/74
Inventor 高畑晴美
Owner KYOWA CHEM IND
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