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Microwave auxiliary extraction method of silybum marianum seed oil

A technology of milk thistle seed oil and microwave assisted, applied in the field of food processing, can solve the problems of low extraction rate, low production efficiency, limited extraction of trace substances and the scope of laboratory research, etc., and achieves simple experimental device and heating speed. quick effect

Inactive Publication Date: 2008-08-27
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressing method has low extraction rate, high labor intensity, low production efficiency and high cost, and has become increasingly unsuitable for the needs of modern production plants (Song Baosheng, Bai Yunai, Li Jifen, Duan Yunying. Milk thistle oil and its preparation process [J]. China Oil, 1999, 2(24): 53-54)
At present, there have been researches on supercritical extraction technology (Xu Defeng, Zhang Weiming, Shi Jinsong, Gu Gongping, Sun Dafeng. Supercritical CO 2 Research on the process of extracting milk thistle oil [J]. Food Machinery, 2007, 23 (1): 93-96), but because of the high cost, complicated equipment, narrow range of solvent selection and other reasons in this method, it is only limited For the extraction of trace substances and the scope of laboratory research

Method used

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  • Microwave auxiliary extraction method of silybum marianum seed oil
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  • Microwave auxiliary extraction method of silybum marianum seed oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preliminary test of embodiment 1 single factor

[0023] 1. The effect of microwave power on the extraction of milk thistle seed oil

[0024] In the microwave-assisted extraction process, microwave power is one of the most important factors affecting the extraction effect. This experiment investigated the changes in the extraction effect when the microwave power was 280W, 420W, 560W, and 700W. The results are as follows: figure 1 .

[0025]Microwave extraction is to use a kind of radiation energy with extremely short wavelength and high frequency to process materials. The cell wall of Agaricus blazei absorbs microwave energy, and the tissue molecules produce instantaneous polarization under the action of microwave electromagnetic field, and polarize at a speed of 245 million times per second. Change motion, produce bond vibration, fracture, and mutual friction and collision between particles, so that the inside of the vascular bundle tissue heats up sharply, and can...

Embodiment 2

[0033] 1. Test method

[0034] 1. Sample processing After vacuum-drying the seeds of milk thistle, crush them with a multifunctional food blender and pass through 40 meshes for use.

[0035] 2 Soxhlet extraction method Accurately weigh 10 g of the above-mentioned milk thistle seed powder, degrease with petroleum ether in a Soxhlet extractor for 10 hours, and calculate the extraction rate of milk thistle seed oil.

[0036] 3 Microwave extraction method Accurately weigh 10g of the above seed powder, put it into a conical flask, and add a certain amount of organic solvent. Put the Erlenmeyer flask into a microwave oven and radiate for a certain period of time (intermittent radiation is used to prevent bumping). Then filter and wash the filter residue, transfer the filtrate and washing solution into a conical flask, heat in a water bath to remove the organic solvent, then dry it, and weigh the quality of the milk thistle seed oil. The fat content is determined according to the m...

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Abstract

The invention discloses a microwave-assisted method for extracting silybum mariamum seed oil, which includes the following steps: silybum mariamum seeds are mixed with organic extraction solvent and then are radiated with microwave, after removing residues by filtering and washing, filtrate and cleaning solution are combined, and organic solvent is removed, etc., wherein, the organic extraction solvent and the silybum mariamum seeds are mixed according to the weight ratio of 5:1-7:1; and the microwave power is 420-700 watt during microwave radiation. The used time of the method is only 1 / 150 of the soxhlet method while the extraction efficiency can be above 93% of the soxhlet method. The method with simple device is easy to control and can be completed by a domestic microwave oven. The method provides important basic data to the industrialization of extracting the silybum mariamum seed oil with the microwave to assist, and further lays the important foundation for the development of the silybum mariamum seed oil.

Description

technical field [0001] The invention relates to a processing method of vegetable oil, in particular to a microwave-assisted extraction method of milk thistle seed oil, belonging to the field of food processing. Background technique [0002] Milk thistle (Silybum marianum (Linn.) Gaertn), also known as milk pheasant, milk thistle, is a herbaceous plant of the genus Silybum in the family Asteraceae. It contains a variety of rich nutrients. In addition to silymarin, milk thistle fruit seeds also contain 20-30% milk thistle seed oil. Studies have found that milk thistle seed oil contains high levels of oleic acid, linoleic acid, and linolenic acid (71%-80% in total), and has significant health effects such as preventing and treating atherosclerosis, hypertension, and coronary heart disease. (He Weiming, Xu Mudan. Study on the Nutrients and Lipid-lowering Effect of Milk Thistle Oil [J]. Acta Nutrienta Sinica, 1996, 18(2): 163-167). At present, milk thistle seed oil is still pro...

Claims

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Application Information

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IPC IPC(8): A23D7/02A23L1/29A23L1/30A23L1/28A23L1/212A23L1/025A23L33/105A23L33/115
Inventor 郑先哲王新刘成海
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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