Industrial production process of extracting high purity lecithin

An extraction method and lecithin technology, which are applied in the directions of edible phospholipid composition, food science, protein food ingredients, etc., can solve the problems of low extraction efficiency and low yield of high-purity lecithin, and achieve good product properties and extraction conditions. mild effect

Inactive Publication Date: 2007-11-07
中兴能源技术(武汉)有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the problems of low output and low extraction efficiency of high-purity lecithin in production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Take soybean powder phospholipid (purchased from Zhengzhou Siwei Phospholipid Technology Co., Ltd., which contains 21.5% lecithin), and add 5 times the volume of solvent (95% ethanol, the same below) in a 50°C thermostat at 100r / Stir for 15 minutes at a speed of min., and then concentrate at 20°C and -0.080MPa for 60 minutes, and then desolvate under reduced pressure at 45°C. The desolventized extract is separated and purified on a chromatographic separation column using methanol as the eluent. The deagent flow rate is 50mL / min. The eluent is concentrated in a rotary thin film evaporator at 30°C and -0.080MPa for 30 minutes, pre-frozen to -35°C, and vacuum freeze-dried for 18 hours to obtain a high-purity lecithin product. Through this process, the extraction rate of powdered phospholipids can reach 10.2%, and the purity of lecithin can reach 90.5%.

Embodiment 2

[0012] Example 2: Take soybean powder phospholipids (purchased from Beijing Huaqing Meiheng Natural Product Technology Development Co., Ltd., which contains 21.5% of lecithin), add 5 times the volume of solvent in a thermostat at 55°C and stir at 150r / min 20min, and then concentrated at 25℃, -0.080MPa for 40min, then desolventize at 45℃ under reduced pressure. The desolventized extract is separated and purified on a chromatographic separation column using methanol as the eluent. The eluent flow rate At 50mL / min, the eluate was concentrated in a rotary thin film evaporator at 35°C and -0.080MPa for 30 minutes, pre-frozen to -38°C, and vacuum freeze-dried for 18 hours to obtain a high-purity lecithin product. Through this process, the extraction rate of powdered phospholipids can reach 10.8%, and the purity of lecithin can reach 91.4%.

Embodiment 3

[0013] Example 3: Take soybean powder phospholipids (purchased from Beijing Meiyasi Phospholipid Technology Co., Ltd., in which the lecithin content is 20.8%), add 6 times the volume of solvent in a 60°C thermostat, stir at 150r / min for 25min, and then After concentrating at 20°C and -0.085MPa for 30 minutes, desolventize at 45°C under reduced pressure. The desolventized extract is separated and purified on a chromatographic separation column using methanol as the eluent. The eluent flow rate is 80mL / min. The eluate was concentrated in a rotary thin film evaporator at 30°C and -0.085MPa for 35 minutes, then pre-frozen to -38°C, and vacuum freeze-dried for 20 hours to obtain a high-purity lecithin product. Through this process, the extraction rate of powdered phospholipids can reach 11.0%, and the purity of lecithin can reach 91.7%.

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Abstract

The industrial extracting process of high purity lecithin includes mixing the material and alcohol solvent in the weight ratio of 0.1-0.2 at 50-75 deg.c in a constant temperature container, stirring to extract for 15-60 min, evaporating at 25-50 deg.c to concentrate for 20-60 min, decompressing at 35-45 deg.c to eliminate solvent, separating and purifying with methanol as the eluent in the flow rate of 60-120 ml/min, concentrating the eluted liquid and vacuum freeze drying to obtain high purity lecithin. The present invention is suitable for use industrial production.

Description

Technical field [0001] The invention relates to an extraction method for industrial production of high-purity lecithin, which belongs to the technical field of industrial extraction of natural active ingredients. Background technique [0002] my country is a major soybean producer and has abundant soybean resources. Phospholipids powder is a by-product of soybean oil extraction. At present, it is mainly used as food dressings, animal feeds, etc., and the product value is low. Soy lecithin is rich in lecithin. Lecithin has good emulsification and physiological activity. High-purity lecithin is widely used in medicine, injection and cosmetic industries, and has the characteristics of complete nutritional value and easy absorption and utilization. The extraction of high-purity lecithin generally uses supercritical extraction or high-performance liquid chromatography. Due to the inherent properties of lecithin and the limitations of equipment performance, these methods cannot be indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/10
Inventor 张维农秦孝敏苏明华田华吴晶芳
Owner 中兴能源技术(武汉)有限公司
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