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Linseed oil emulsion taking compounded linseed gum as emulsifier and preparation method of linseed oil emulsion

A technology of linseed oil and emulsifier, applied in the fields of edible oil/fat, food science, application, etc., can solve the problems of being easily affected by the environment, the thickness of the mask is thin, the system is unstable, etc., and achieves good dispersion and high utilization. , the effect of high oxidation stability

Active Publication Date: 2017-05-31
CHINA AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used emulsifiers for preparing oil-in-water emulsions are proteins and polysaccharides. Proteins have good emulsifying properties, but the thickness of the interface film of the emulsion is relatively thin, which is easily affected by the environment. When the pH value of the system is near the isoelectric point, oil droplets will occur. Aggregation, causing system instability

Method used

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  • Linseed oil emulsion taking compounded linseed gum as emulsifier and preparation method of linseed oil emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1, preparation linseed oil emulsion

[0037] 1) Take a mixture of gum arabic (molecular weight 200,000-600,000) and flax gum (molecular weight 2.6-3.5 million) as an emulsifier (mass ratio 7:3), add glycerin to wet (the amount ratio of emulsifier and glycerin is 2:1), add sterile pure water to the mixed material to make an aqueous solution of 2.5wt% emulsifier, stir magnetically at 60°C for 1 hour and then swell overnight (temperature is about 25°C, 10h) to ensure full hydration.

[0038] 2) Using linseed oil as the oil phase, according to the oil-water ratio of 1:4 (v / v), slowly add the oil phase to the water phase at a shear rate of 10,000 rpm and a shear time of 2 min to form a primary emulsion.

[0039] 3) Use a high-pressure homogenizer to carry out secondary homogenization, the pressure of the primary homogenization is 350 bar, and the pressure of the secondary homogenization is 50 bar, and a stable linseed oil emulsion is prepared.

[0040] The partic...

Embodiment 2

[0046] Embodiment 2, preparation linseed oil emulsion

[0047]1) Take a mixture of gum arabic (molecular weight 200,000-600,000) and flax gum (molecular weight 2.6-3.5 million) as an emulsifier (mass ratio 2:1), add glycerin to wet (the amount ratio of emulsifier and glycerin is 3:2), add sterile pure water to the mixed material to make an aqueous solution of 1.5wt% emulsifier, stir magnetically at 60°C for 1 hour and then swell overnight (temperature is about 25°C, 10h) to ensure full hydration.

[0048] 2) Using linseed oil as the oil phase, according to the oil-water ratio of 1:2 (v / v), slowly add the oil phase into the water phase at a shear rate of 20,000 rpm and a shear time of 2 min to form a primary emulsion.

[0049] 3) Use a high-pressure homogenizer to carry out secondary homogenization, the pressure of the primary homogenization is 250 bar, and the pressure of the secondary homogenization is 50 bar, and a stable linseed oil emulsion is prepared.

[0050] The parti...

Embodiment 3

[0055] Embodiment 3, preparation linseed oil emulsion

[0056] 1) Take a mixture of gum arabic (molecular weight 200,000-600,000) and flax gum (molecular weight 2.6-3.5 million) as an emulsifier (mass ratio 3:1), add glycerin to wet (the ratio of emulsifier to glycerin is 3:1), add sterile pure water to the mixed material to make an aqueous solution of 2wt% emulsifier, stir magnetically at 60°C for 1 hour and then swell overnight (temperature is about 25°C, 10h) to ensure full hydration.

[0057] 2) Using linseed oil as the oil phase, according to the oil-water ratio of 1:3 (v / v), slowly add the oil phase into the water phase at a shear rate of 15000 rpm and a shear time of 2 min to form a primary emulsion.

[0058] 3) Use a high-pressure homogenizer to carry out secondary homogenization, the pressure of the primary homogenization is 300 bar, and the pressure of the secondary homogenization is 50 bar, and a stable linseed oil emulsion is prepared.

[0059] The particle size o...

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Abstract

The invention discloses linseed oil emulsion taking compounded linseed gum as an emulsifier and a preparation method of the linseed oil emulsion. The preparation method of the linseed oil emulsion comprises the following steps: 1) preparing a water solution of the emulsifier as a water phase, wherein the emulsifier is a mixture of Arabic gum and the linseed gum; 2) taking linseed oil as an oil phase and adding the oil phase into the water phase to obtain a primary emulsion; 3) homogenizing the primary emulsion to obtain the linseed oil emulsion. The linseed oil emulsion disclosed by the invention is small in grain diameter, good in dispersity and high in physical stability; meanwhile, the linseed oil emulsion has relatively high oxidization stability under different temperatures and pH (Potential of Hydrogen) conditions, and has a stronger environment change resisting capability when being compared with emulsion prepared by protein-polysaccharide layer-by-layer preparation; the linseed oil emulsion can keep relatively good stability under the conditions of relatively wide pH range and relatively great ion strength and in process treatment of sterilization, freeze thawing and the like. The linseed oil emulsion prepared by the invention has good storage stability; compared with a pure oil system of the linseed oil emulsion, the linseed oil emulsion has relatively good protection effect on linolenic acid.

Description

technical field [0001] The invention relates to a linseed oil emulsion compounded with linseed gum as an emulsifier and a preparation method thereof, belonging to the field of oil processing. Background technique [0002] Linseed oil is a vegetable oil with high unsaturated fatty acid (more than 80%), and the content of α-linolenic acid can reach more than 60%. α-linolenic acid is an essential fatty acid in the human body, which can be metabolized into EPA and DHA in the human body. These three fatty acids belong to omega-3 fatty acids, which can promote the development of the brain and nervous system of infants and young children, improve memory, especially for reducing heart and brain. Risk of vascular disease plays a role. The edible oils of Chinese residents are mainly refined soybean oil, peanut oil, sunflower oil and cottonseed oil, etc., and the intake of saturated fatty acids and omega-6 unsaturated fatty acids is relatively high, while the intake of omega-3 fatty a...

Claims

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Application Information

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IPC IPC(8): A23D9/007A23D9/04
Inventor 倪元颖温馨岳宝王宇晓张延琦刘冰李茉王坤立
Owner CHINA AGRI UNIV
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