A kind of concentrated phospholipid and preparation method thereof

A technology for concentrating phospholipids and phospholipids, applied in chemical instruments and methods, edible phospholipid compositions, organic chemistry, etc., can solve the problems of increased acid value, darker color, high energy consumption of water, etc., to increase affinity, phospholipids The effect of content increase

Active Publication Date: 2021-03-30
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the oil refining and degumming process, the separation of phospholipids is based on the water absorption characteristics of phospholipids, adding water with 3 times the content of phospholipids to separate them from the oil (precipitation or centrifugal separation), and the obtained by-products are hydrated oil feet, hydrated oil feet Concentrated phospholipids are obtained by evaporating a large amount of water. In this process, there are also disadvantages to the quality of phospholipids. First, phospholipids will be hydrolyzed and deteriorated in a large amount of water, resulting in increased acid value and darker color. Second, a large amount of water is consumed by concentrated evaporation. High energy, and the concentration and dehydration process will also make the color darker

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] After the rapeseed is dehulled, it is conditioned and tempered, and the water content is adjusted to 11wt%. Filter to remove solid impurities, and then recover the solvent in the evaporator at a temperature of 60-90°C. The recovery temperature gradually rises from 60°C to 90°C. When the solvent content reaches 8wt% of the mixed oil, use negative pressure to recover the solvent. The recovery temperature does not exceed 90° C., after recovering the solvent, a grease with high phospholipid content is obtained, and the content of phospholipid is 12.8 wt%. Then put the high-phospholipid-containing grease into a container with a freezing jacket and cool it to 20° C., let it stand for 5 days, and then skim off the upper part of the grease to obtain concentrated phospholipids. The content of phospholipids in the concentrated phospholipids exceeds 60 wt%.

Embodiment 2

[0038] Soybeans are subjected to tempering treatment after flaking, and the moisture content is adjusted to 8wt%. The oil is extracted by cold pressing oil production method, and the obtained cold pressed cake is extracted by hexane at the extraction temperature of 55°C. The obtained mixed oil is first processed Filter to remove solid impurities, and then recover the solvent in the evaporator at a temperature of 60-90°C. The recovery temperature gradually rises from 60°C to 90°C. When the solvent content reaches 8wt% of the mixed oil, use negative pressure to recover the solvent. The recovery temperature does not exceed 90 DEG C, after recovering the solvent, a grease with high phospholipid content is obtained, and the content of phospholipid is 11.7wt%. Then put the high-phospholipid-containing grease into a container with a freezing jacket and cool it to 20° C., let it stand for 10 days, and then skim off the upper part of the grease to obtain concentrated phospholipids. The ...

Embodiment 3

[0040] Peanuts are subjected to tempering treatment after crushing and flaking, and the water content is adjusted to 8wt%. After filtering to remove solid impurities, the solvent is recovered in the evaporator at a temperature of 60-90 ° C. The recovery temperature is gradually increased from 60 ° C to 90 ° C. When the solvent content reaches 8wt% of the mixed oil, the solvent is recovered under negative pressure. The recovery temperature is not high. When the temperature exceeds 90° C., the solvent is recovered to obtain oil with high phospholipid content, and the content of phospholipid is 7.2 wt%. Then put the high-phospholipid-containing grease into a container with a freezing jacket and cool it to 20° C., let it stand for 10 days, and then skim off the upper part of the grease to obtain concentrated phospholipids. The content of phospholipids in the concentrated phospholipids is more than 60 wt%.

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Abstract

The invention discloses a concentrated phospholipid and a preparation method thereof. The preparation method includes: (1) pretreatment and tempering: peeling and / or crushing and / or flaking oil plants with a moisture content of 8 to 12% by weight; (2) cold pressing oil production: adopting cold pressing Extract the oil in the oil plant to obtain a cold-pressed cake; use a non-polar solvent to extract the cold-pressed cake to obtain a mixed oil, and filter to remove impurities; recover the non-polar solvent to obtain phospholipid-containing oil; (3) prepare concentrated phospholipids : the phospholipid-containing grease obtained in step (2) is left to stand, and the concentrated phospholipid is obtained after separating the upper layer of grease. The invention ensures that the oil is effectively prepared at a relatively low temperature in each processing link and at the same time fully ensures the stable quality of the phospholipids.

Description

technical field [0001] The invention belongs to the field of oil processing, and more specifically relates to a concentrated phospholipid and a preparation method thereof. Background technique [0002] Crude oil is obtained by pretreatment, pressing (hot pressing) or leaching of oil plants. After hydration and degumming, the crude oil is degummed oil and a by-product - hydrated oil bottoms. Concentrated phospholipids are produced by vacuum dehydration and concentration using hydrated oil bottoms as raw materials. The phospholipid products can be used as food additives or feed additives, and can also be used as raw materials for the production of powdered phospholipids or other phospholipids. The main process is: oil plant→pretreatment→steaming→hot pressing (or leaching)→crude oil→hydration degumming→degumming oil, which also includes hydration degumming→hydration oil foot→concentration→concentration of phospholipids. [0003] Hydration degumming is to make use of the hydrop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/10
CPCC07F9/103
Inventor 齐玉堂张维农
Owner WUHAN POLYTECHNIC UNIVERSITY
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