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Method for extracting and separating safflower seed oil

A technology of safflower seed oil and separation method, which is applied in the fields of edible oil/fat, food preparation, food science, etc., can solve the problems of insufficient separation purity, difficult operation and high equipment requirements, and achieves reduction of molecular distillation stages, The effect of improving extraction yield and shortening extraction time

Active Publication Date: 2010-06-23
吉林省百利生物科技有限公司
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AI Technical Summary

Problems solved by technology

Among them, the urea inclusion technology has the advantages of less investment, simple process, low operating temperature, and can relatively completely retain the nutrition and physiological activity of unsaturated fatty acids, but its disadvantage is that the separation purity of the product is not high enough. Inclusion, low product yield; low temperature crystallization also has the advantages of less investment and simple process, but requires a large amount of organic solvents during treatment, and separation needs to be carried out at -50°C, which requires high equipment and is difficult to operate , the separation purity is low; rectification separation method is an industrialized separation technology widely used at present, but its main disadvantage is that the operating temperature is high and the time is long, resulting in thermal reaction of unsaturated fatty acids, which affects product quality and yield; The supercritical extraction method has the advantages of easy adjustment of the process, short equilibrium time, high extraction rate, easy separation of the product and the solvent, no organic solvent residue, and no damage to heat-sensitive substances. The disadvantage is that the equipment investment is large and the extraction pressure is high; compared with the above method Compared with molecular distillation technology, it has the advantages of low operating temperature, low distillation pressure, short heating time, high degree of separation, high product yield, clean and environmental protection, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] 1. Raw material preparation: Dry an appropriate amount of safflower seeds at 55°C for 6 hours, cool and crush to 40-60 mesh, and set aside.

[0020] 2. Dual-frequency ultrasonic extraction of safflower seed oil: take 1kg of safflower seed powder, use n-hexane as the extraction solvent, the ratio of solid to liquid (g:mL) is 1:5, and the frequency combinations of the two ultrasonic waves are 20kHz and 40kHz, respectively. The powers were 200W and 300W respectively, the combination method was different direction horizontal combination, the extraction time was 25min, and 275g of safflower seed oil was obtained.

[0021] 3. Preparation of crude linoleic acid by urea inclusion method:

[0022] (1) Preparation of mixed fatty acids: Weigh 100 g of the above-mentioned safflower seed oil, add it to 400 mL of 4% sodium hydroxide-methanol solution, saponify and reflux for 1 h in a constant temperature water bath at 65° C., cool to room temperature, add an appropriate amount of wat...

example 2

[0029] 1. Raw material preparation: Dry an appropriate amount of safflower seeds at 60°C for 5 hours, cool and crush to 40-60 mesh, set aside.

[0030] 2. Three-frequency ultrasonic extraction of safflower seed oil: take 1kg of safflower seed powder, use ethyl acetate as the extraction solvent, the ratio of solid to liquid (g:mL) is 1:6, and the frequency combinations of the three ultrasonic waves are 20kHz and 40kHz respectively , 800kHz, the power is 100W, 250W, 500W respectively, the combination method is different direction horizontal combination or orthogonal combination, the extraction time is 15min, and 280g of safflower seed oil is obtained.

[0031] 3. Preparation of crude linoleic acid by urea inclusion method:

[0032] (1) Preparation of mixed fatty acids: Weigh 100 g of the above-mentioned safflower seed oil, add it to 400 mL of 4% sodium hydroxide-methanol solution, saponify and reflux for 1 h in a constant temperature water bath at 65° C., cool to room temperatur...

example 3

[0039] 1. Raw material preparation: bake safflower seeds at 60°C for 3 hours, cool and crush to 60-80 mesh, set aside.

[0040] 2. Dual-frequency ultrasonic synergistic extraction: Take appropriate amount of safflower seed powder, add No. 6 solvent oil according to the ratio of material to liquid (g:mL) of 1:8, the frequency of the two ultrasonic waves is 40kHz and 80kHz, and the power is 150W, 250W, the combination method is orthogonal combination, the extraction time is 10min, and 278g of light yellow, clear and transparent safflower seed oil is obtained.

[0041] 3. Preparation of crude linoleic acid by urea inclusion method:

[0042] (1) Preparation of mixed fatty acids: Weigh an appropriate amount of the above-mentioned safflower seed oil, add it into 4% sodium hydroxide-methanol solution in a ratio of 1:4, saponify and reflux in a constant temperature water bath at 70°C for 1 hour, cool to room temperature, and add an appropriate amount of Dissolve the saponifiable matt...

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Abstract

The invention relates to a method for extracting and separating safflower seed oil, belonging to the technical field of grain and oil processing. The invention uses safflower seed oil as raw material and adopts multifrequency ultrasonic synergy to extract safflower seed oil. The extracting method has simple technology, low operation temperature, short extraction time, less solvent dosage and high recovery ratio, the obtained crude oil has high quality and is easy to refine; and the obtained safflower seed oil is used to prepare mixed fatty acid through saponification and acidification, firstly urea adduction fractionation is adopted to perform primary separation of the mixed fatty and prepare crude linoleic acid, and then the molecular distillation of the crude linoleic acid is performed to prepare refined linoleic acid. The separation method combines the urea adduction fractionation with the molecular distillation method, the prepared linoleic acid has high purity, good quality, high yield and low cost and the obtained product can be used in medicines, health care products, foods and other industries.

Description

technical field [0001] The invention relates to functional oil processing technology, in particular to a method for extracting safflower seed oil and separating and purifying linoleic acid therein. The invention belongs to the technical field of grain and oil processing. The finished products prepared by this method can be used as food additives or nutritional fortifiers to be added to food, especially food for the elderly and infants, or made into capsule health products for direct consumption, as well as conjugated linoleic acid and The raw material of ethyl linoleate is used. Background technique [0002] Safflower seed oil contains more than 90% unsaturated fatty acids, of which linoleic acid content is as high as 83%. Modern medical research shows that linoleic acid has the effects of lowering blood lipids, softening blood vessels, stabilizing blood pressure, enhancing physical fitness, promoting microcirculation, and indirectly restoring nerve function. It can preven...

Claims

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Application Information

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IPC IPC(8): A23L1/29A23L1/30A23L1/28A23D9/02A23L31/00A23L33/115A23L33/12
Inventor 胡爱军冯棋琴郑捷
Owner 吉林省百利生物科技有限公司
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