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Method for extracting high-purity peanut lecithin

A technology of peanut lecithin and an extraction method, which is applied in the field of food processing, can solve the problems of poor applicability of peanut oil feet, waste of resources, and the purity needs to be improved, and achieves the effects of realizing comprehensive utilization, improving dispersion performance and improving utilization value.

Inactive Publication Date: 2015-05-06
INST OF AGRO FOOD SCI & TECH SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Peanut oil bottoms are leftovers produced during the production of peanut oil, which are rich in phospholipids, but in the prior art, peanut oil bottoms are mostly used as feed additives, resulting in a waste of resources
[0005] Chinese patent CN1634939A discloses a supercritical CO 2 The method for extracting soybean lecithin is to extract lecithin by adding entraining agent ethanol. Although this method improves the extraction rate of lecithin, the extract still contains other phospholipid components, and the purity needs to be improved. Poor applicability of feet
At present, there is no report on the use of supercritical carbon dioxide to extract peanut lecithin

Method used

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  • Method for extracting high-purity peanut lecithin

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Embodiment 1

[0021] A method for extracting high-purity peanut lecithin, comprising the following steps:

[0022] a. Add 0.05% cellulase and 8% water to 5g of peanut oil, enzymatically hydrolyze for 1.5h, then add 0.08% proteolytic enzyme, continue to enzymolyze for 1h, after ultrasonic treatment at 55℃ for 25min, dry and dehydrate to obtain dehydrated peanut oil foot;

[0023] b. Primary extraction: put the dehydrated peanut oil foot into the extraction pool, and feed CO at a flow rate of 2ml / min 2 , at a temperature of 35°C and a pressure of 30 MPa, extract statically for 10 minutes, then extract dynamically for 20 minutes;

[0024] c. Secondary extraction: pre-mix ethanol with CO 2 Mixing, the amount of ethanol added is 2%, and CO mixed with ethanol is introduced at a flow rate of 2ml / min. 2 , under the conditions of 45°C and pressure of 35MPa, extract the peanut oil foot after the first extraction for 150min, separate and recover carbon dioxide and ethanol, and obtain high-purity pe...

Embodiment 2

[0026] A method for extracting high-purity peanut lecithin, comprising the following steps:

[0027] a. Add 0.05% cellulase and 8% water to 5g of peanut oil, enzymatically hydrolyze for 1.5h, then add 0.08% proteolytic enzyme, continue to enzymolyze for 1h, after ultrasonic treatment at 55℃ for 25min, dry and dehydrate to obtain dehydrated peanut oil foot;

[0028] b. Primary extraction: put the dehydrated peanut oil foot into the extraction pool, and feed CO at a flow rate of 2ml / min 2 , at a temperature of 35°C and a pressure of 25 MPa, extract statically for 10 minutes, then extract dynamically for 20 minutes;

[0029] c. Secondary extraction: pre-mix ethanol with CO 2 Mixing, the amount of ethanol added is 2%, and CO mixed with ethanol is introduced at a flow rate of 2ml / min. 2 , under the conditions of 45°C and pressure of 30MPa, extract the peanut oil foot after the first extraction for 150min, separate and recover carbon dioxide and ethanol, and obtain high-purity pe...

Embodiment 3

[0031] A method for extracting high-purity peanut lecithin, comprising the following steps:

[0032] a. Add 0.05% cellulase and 8% water to 5g of peanut oil, enzymatically hydrolyze for 1.5h, then add 0.08% proteolytic enzyme, continue to enzymolyze for 1h, after ultrasonic treatment at 55℃ for 25min, dry and dehydrate to obtain dehydrated peanut oil foot;

[0033] b. Primary extraction: put the dehydrated peanut oil foot into the extraction pool, and feed CO at a flow rate of 2ml / min 2 , at a temperature of 45°C and a pressure of 30 MPa, extract statically for 10 minutes, then extract dynamically for 20 minutes;

[0034] c. Secondary extraction: pre-mix ethanol with CO 2 Mixing, the amount of ethanol added is 2%, and CO mixed with ethanol is introduced at a flow rate of 2ml / min. 2 , under the conditions of 35°C and 35MPa pressure, extract the peanut oil foot after the first extraction for 150min, separate and recover carbon dioxide and ethanol, and obtain high-purity peanu...

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Abstract

The invention belongs to the field of food processing and particularly relates to a method for extracting high-purity peanut lecithin. The method comprises the following steps: firstly, performing enzymolysis on peanut oil sediments to increase the extraction rate of lecithin; secondly, performing supercritical extraction twice to obtain peanut lecithin. The obtained peanut lecithin is high in purity and strong in functionality. Little solvent is used in the preparation method provided by the invention, and the purity of the obtained peanut lecithin reaches up to more than 96%.

Description

technical field [0001] The invention relates to a process for extracting phospholipids, in particular to a method for extracting high-purity peanut lecithin, which belongs to the field of food processing. Background technique [0002] Phospholipids (phspholipids) are ubiquitous in nature and are the main components of plant and animal biofilms. They mainly include lecithin, cephalin, inositol phospholipids, and serine phospholipids. Phospholipids have a variety of biological functions in living organisms. Enhance the body's immunity and victory, maintain metabolism, etc. Among them, its important role is lecithin. [0003] Lecithin (phosphatidylcholine: PC) is a basic component of human cell membranes. It is known as the three major nutrients alongside proteins and vitamins. It has the functions of improving body nerve dysfunction and disorder, restoring brain function, enhancing memory and anti-aging. and other effects. Existing lecithin extraction methods include: o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P13/00C07F9/10
CPCY02P20/54
Inventor 刘丽娜刘振华杜方岭徐同成宗爱珍陶海腾邱斌刘玮
Owner INST OF AGRO FOOD SCI & TECH SHANDONG ACAD OF AGRI SCI