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Method of supercritical extraction of unsaturated fatty acid of schizochytrium limacinum

A technology for unsaturated fatty acid and Schizochytrium, which is applied in the field of supercritical extraction of Schizochytrium unsaturated fatty acids, can solve the problems of long extraction time and high production cost, and achieves shortening extraction time, speeding up dissolution speed and fewer operation steps. Effect

Inactive Publication Date: 2009-10-07
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using supercritical fluid extraction technology to extract unsaturated fatty acids from marine microorganisms has great application prospects, but the traditional supercritical fluid extraction method also has defects such as long extraction time and high production costs.

Method used

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  • Method of supercritical extraction of unsaturated fatty acid of schizochytrium limacinum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1. A method for supercritical extraction of unsaturated fatty acids from Schizochytrium, the steps are as follows,

[0014] (1) Pack the dried Schizochytrium powder into the extraction kettle of the supercritical extraction device;

[0015] (2) Adjust the process parameters of the supercritical extraction device to the following set process parameters: the extraction temperature is 35°C, the extraction pressure is 30MPa, the separation temperature is 50°C, the separation pressure is 12MPa, and the fluid flow rate is 10L h -1 1. The amount of ethanol entrainer accounts for 6% of the total weight of the extraction medium, and then the extraction is started, and the ultrasonic device is turned on at the same time, the electric power of the ultrasonic wave generated in each liter of the extraction kettle is 500W, and the ultrasonic device is turned off after 9 minutes of extraction;

[0016] (3) Keep the process parameters of the supercritical extraction device set...

Embodiment 2

[0017] Example 2. A method for supercritical extraction of unsaturated fatty acids from Schizochytrium, the steps are as follows,

[0018] (1) Pack the dried Schizochytrium powder into the extraction kettle of the supercritical extraction device;

[0019] (2) Adjust the process parameters of the supercritical extraction device to the following set process parameters: the extraction temperature is 35°C, the extraction pressure is 30MPa, the separation temperature is 50°C, the separation pressure is 12MPa, and the fluid flow rate is 10L h -1 1. The amount of ethanol entrainer accounts for 6% of the total weight of the extraction medium, and then the extraction is started, and the ultrasonic device is turned on at the same time, the electric power of the ultrasonic wave generated in each liter of the extraction kettle is 500W, and the ultrasonic device is turned off after 10 minutes of extraction;

[0020] (3) Keep the process parameters of the supercritical extraction device se...

Embodiment 3

[0021] Example 3. A method for supercritical extraction of unsaturated fatty acids from Schizochytrium, the steps are as follows,

[0022] (1) Pack the dried Schizochytrium powder into the extraction kettle of the supercritical extraction device;

[0023] (2) Adjust the process parameters of the supercritical extraction device to the following set process parameters: the extraction temperature is 35°C, the extraction pressure is 30MPa, the separation temperature is 50°C, the separation pressure is 12MPa, and the fluid flow rate is 10L h -1 1. The amount of ethanol entrainer accounts for 6% of the total weight of the extraction medium, and then the extraction is started, and the ultrasonic device is turned on at the same time, the electric power of the ultrasonic wave generated in each liter of the extraction kettle is 500W, and the ultrasonic device is turned off after 11 minutes of extraction;

[0024] (3) Keep the process parameters of the supercritical extraction device se...

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Abstract

The invention relates to a method of supercritical extraction of unsaturated fatty acid of schizochytrium limacinum, which is characterized by comprising the following steps of: filling dried schizochytrium limacinum powder into an extraction kettle of a supercritical extraction device; setting technological parameters of the supercritical extraction device; then starting to extraction; simultaneously starting an ultrasonic strengthening device; generating ultrasonic wave with the electric power of 500W in each liter of the extraction kettle and closing the ultrasonic device after extraction for 9 to 11 minutes; and maintaining the technological parameters set in the step (2) to be constant, and continuously extracting for 45 to 55 minutes to obtain the unsaturated fatty acid extract. By preferring technological parameters for extraction and simultaneously applying strengthening action of the ultrasonic wave, the extraction method can improve extraction efficiency obviously under the premise that the property of extract is not changed; in addition, the method has short extraction time, and the extracted unsaturated fatty acid has high purity.

Description

technical field [0001] The invention relates to a method for extracting unsaturated fatty acids from Schizochytrium, in particular to a method for supercritically extracting unsaturated fatty acids from Schizochytrium. Background technique [0002] The n-3 polyunsaturated fatty acid represented by DHA (docosahexaenoic acid) refers to a type of fatty acid with more than or equal to 18 carbon atoms and two or more double bonds. Such unsaturated fatty acids have important physiological functions such as preventing and treating cardiovascular diseases, anti-cancer, anti-inflammation, and promoting the development of the nervous system and visual system. They are often added as additives to milk powder, beverages, bread and other foods. Traditionally, the main source of n-3 polyunsaturated fatty acids, including DHA, has been marine fish oils. With the increasing shortage of marine fishery resources, it is difficult for fish oil to meet people's demand for n-3 polyunsaturated fa...

Claims

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Application Information

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IPC IPC(8): C07C51/48C07C57/03
CPCY02P20/54
Inventor 刘云鹤周鸣谦王淑军许冰
Owner HUAIHAI INST OF TECH
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