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Method for reducing peroxide value and anisidine value of polyunsaturated fatty acid oil

A technology of unsaturated fatty acid and peroxide value, which is applied in the field of food processing, can solve the problems of high cost and affecting the yield, and achieve the effect of simple method, improved quality and improved refining yield

Inactive Publication Date: 2018-03-02
XIAMEN HUISON BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional processing method not only has a high cost but also affects the yield, so there is an urgent need for new low-cost methods to process polyunsaturated fatty acid oils with high peroxide values

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Prepare 5 kg of 10% L-cysteine ​​hydrochloride solution, and add 85 grams of citric acid (1.7‰ of the oil quality), 100 grams of phytic acid (0.2% of the oil quality), and 150 grams of sorbitol (the oil quality 0.3%), dissolved at 60°C, ready for immediate use. Wherein, fat is an abbreviation of unsaturated fatty acid oil, which is the same below and will not be described in detail.

[0016] Take 50 kg of stored high peroxide value (peroxide value 139.2meq / kg, anisidine value 63.7) DHA algae oil (the original DHA content is 52.1%), add to the mixed solution, 500 grams of activated carbon and silica gel (grease quality 1%), mixed and stirred for 2 hours under vacuum at 60°C. After centrifugation and heavy distillation and filtration to separate the solution, the peroxide value was reduced to 4.9meq / kg, and the anisidine value was 4.7. The DHA content of the untreated sample was 52.1%, and that of the treated sample was 52.3%. If the crude oil is treated after changing...

Embodiment 2

[0018] Configure 5 kg of 10% L-cysteine ​​hydrochloride solution, and add 25 grams of malic acid (0.5‰ of the oil mass), 50 grams of phytic acid (0.1% of the oil mass), and 75 grams of sorbitol (0.5% of the oil mass) 0.15% of 0.15%), first dissolved at 40 ℃, ready to use.

[0019] Take 50 kg of stored fish oil with higher peroxide value (peroxide value 26.63meq / kg, anisidine value 11.7), add 5 kg of mixed solution, 100 g of silica gel and activated carbon (0.2% of the mass of oil), and vacuum at 40 °C Under the condition of mixing and stirring, the reaction was carried out for 0.5 hours. After centrifugation and heavy distillation and filtration to separate the solution, the peroxide value was reduced to 4.9meq / kg, and the anisidine value was reduced to 3.6.

Embodiment 3

[0021] Prepare 5 kg of 10% L-cysteine ​​hydrochloride solution, add 60 grams of citric acid (1.2‰ of the oil quality), 80 grams of phytic acid (0.16% of the oil quality), and 120 grams of sorbitol (the oil quality 2.4%), dissolved at 50°C, ready for immediate use.

[0022] Take 50 kg of stored camellia oil with high peroxide value (peroxide value 64.3meq / kg, anisidine value 21.3), add 5 kg of mixed solution, 250 g of silica gel and activated carbon (0.5% of the mass of oil), and vacuum at 50 °C Under the condition of mixing and stirring, the reaction was carried out for 1 hour. After centrifugation and heavy distillation and filtration to separate the solution, the peroxide value was reduced to 3.7meq / kg, and the anisidine value was reduced to 3.1.

[0023] Comparing Example 1, Example 2 and Example 3, it can be seen that the reducing agent reacts with other peroxides preferentially, and can reduce partially oxidized DHA when the concentration of the peroxide substrate decrea...

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Abstract

The invention discloses a method for reducing a peroxide value and an anisidine value of polyunsaturated fatty acid oil. The method comprises the following steps: according to the mass of the unsaturated fatty acid oil, weighing a reducing agent accounting for 0.01-3% of mass of the unsaturated fatty acid oil, an adsorbent accounting for 0.2-5% of mass of the unsaturated fatty acid oil, and organic acid accounting for 0.02-0.3% of mass of the unsaturated fatty acid oil, under vacuum condition at 25-70 DEG C, mixing the unsaturated fatty acid oil, the reducing agent, the adsorbent, and the organic acid, stirring a mixture for 0.5-6 hours, at a vacuum degree being greater than 0.095 MPa, employing a centrifugation method for separating a water phase and an oil phase, and completing treatmentof the polyunsaturated fatty acid oil. The method is simple, the polyunsaturated fatty acid oil can be rapidly processed with low cost to reduce the peroxide value, the peroxide value of the polyunsaturated fatty acid oil under high yield is reduced to lower than 5 meq / kg, the anisidine value is reduced to lower than 5, refining yield is increased, and quality of the polyunsaturated fatty acid oil is improved.

Description

technical field [0001] The invention belongs to the field of food processing, and relates to a method for reducing the peroxide value and anisidine value of polyunsaturated fatty acid oil, in particular to the treatment of reducing the peroxide value of polyunsaturated fatty acid oil. Background technique [0002] Polyunsaturated fatty acids have a variety of extremely important physiological functions for the human body: PUFAs play a decisive role in the function of cell membranes, and n-3 polyunsaturated fatty acids can also selectively penetrate into the brain and retina to ensure the normal activity of nerve cells. PUFAs also play an important role in human lipid metabolism and immune regulation. PUFAs can esterify cholesterol, effectively reduce blood lipid concentration, and ensure the health of the cardiovascular system. At the same time, PUFAs participate in the regulation of the immune system, and can also regulate the gene expression of some key enzymes, which have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/02C11B3/04C11B3/10
CPCC11B3/001C11B3/02C11B3/04C11B3/10
Inventor 陈礼毅钟惠昌陈水荣
Owner XIAMEN HUISON BIOTECH
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