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Method for enriching polyunsaturated fatty acid from pine caterpillar

An unsaturated fatty acid, pine caterpillar technology, applied in fatty acid production, fatty acid preparation/refining, etc., can solve the problems of oil extraction without pine caterpillar and polyunsaturated fatty acid enrichment, avoid the use of chemical pesticides, prevent oxidation, Significant economic benefits

Inactive Publication Date: 2010-11-17
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above literature involves the extraction of oil from silkworm chrysalis or a certain insect, but there is no report on the oil extraction and polyunsaturated fatty acid enrichment of pine caterpillar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 20kg pine caterpillar larvae were placed in 55 DEG C blasting dry heat equipment and dried for 24 hours in layers, and the thickness of each layer was 2cm. Then use a pulverizer to pulverize the sample into a 60-mesh sample. Extract 5 hours at 40° C. with 10 times the volume of sherwood oil with a boiling range of 30-60° C., and centrifugally evaporate the sherwood oil to obtain 2.9 kg of pine caterpillar oil. The oil was refrigerated and centrifuged at -4°C at 5000 rpm for 15 minutes to obtain 2.8 kg of refined pine caterpillar oil. Next, mix 17kg of urea and 68L of alcohol, stir in a reactor at 40°C until the solution is clear, then mix with 2.8kg of refined oil, stir for 4 hours, and freeze and crystallize at -10°C for 10 hours. The material was taken out, refrigerated and centrifuged at -4°C, 5000 rpm for 15 minutes, the crystal clathrate was removed, and the solvent was evaporated to obtain 0.53 kg of polyunsaturated fatty acid product with a polyunsaturated fatty...

Embodiment 2

[0025] 20kg pine caterpillar larvae were placed in 55 DEG C blasting dry heat equipment and dried for 24 hours in layers, and the thickness of each layer was 3cm. Then use a pulverizer to pulverize the sample into a 60-mesh sample. Extract at 50°C for 4 hours with 10 times the volume of petroleum ether having a boiling range of 30-60°C, and centrifugally evaporate the petroleum ether to obtain 3.1 kg of pine caterpillar oil. The oil was refrigerated and centrifuged at -4°C at 5000 rpm for 15 minutes to obtain 3.0 kg of refined pine caterpillar oil. Mix 15kg of urea and 60L of alcohol, stir in a reactor at 50°C until the solution is clear, then mix with 3.0kg of refined oil, stir for 5 hours, and then freeze and crystallize at -4°C for 12 hours. The material was taken out, refrigerated and centrifuged at -4°C, 5000 rpm for 15 minutes, the crystal clathrate was removed, and the solvent was evaporated to obtain 0.66 kg of polyunsaturated fatty acid product with a polyunsaturated...

Embodiment 3

[0027] 20kg pine caterpillar larvae were placed in 55 DEG C blasting dry heat equipment and dried for 24 hours in layers, and the thickness of each layer was 2cm. Then use a pulverizer to pulverize the sample into a 60-mesh sample. Extract at 60° C. for 5 hours with 10 times the volume of sherwood oil having a boiling range of 30-60° C., and centrifugally evaporate the sherwood oil to obtain 3.3 kg of pine caterpillar oil. The oil was refrigerated and centrifuged at -4°C at 5000 rpm for 15 minutes to obtain 3.1 kg of refined pine caterpillar oil. Mix 12kg of urea and 48L of alcohol, stir in a reactor at 60°C until the solution is clear, then mix with 3.1kg of refined oil, stir for 6 hours, and then freeze and crystallize at -4°C for 16 hours. The material was taken out, refrigerated and centrifuged at -4°C, 5000 rpm for 15 minutes, the crystal clathrate was removed, and the solvent was evaporated to obtain 0.72 kg of polyunsaturated fatty acid product with a polyunsaturated f...

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PUM

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Abstract

The invention discloses a method for concentrating polyunsaturated fatty acid from the pine moth, which comprises the following steps: a urea adduct method is adopted to separate a fatty acid mixture according to the unsaturated degree difference of the fatty acid, the polyunsaturated fatty acid such as Alpha-linolenic acid, etc. is concentrated from the pine moth to obtain the polyunsaturated fatty acid product with higher purity, and the content of the polyunsaturated fatty acid reaches 80 to 90 percent. The method of the invention has wide raw material sources, low cost and high productionefficiency, thus being a simple and practical technology.

Description

technical field [0001] The invention belongs to the technical field of functional oil extraction, and in particular relates to a method for enriching polyunsaturated fatty acids from pine caterpillars. Background technique [0002] At present, the development of functional oils - polyunsaturated fatty acids is an important part of the development of functional foods. For a long time, most of the studies on the composition of polyunsaturated fatty acids are based on marine fish, and there are few studies on polyunsaturated fatty acids in insects. [0003] Pine caterpillar (Dendrolimus spp.) is the most serious forest pest in my country, and it can be called a forest fire without smoke. Since the 1970s, the occurrence area of ​​pine caterpillars in my country is about 1.5 to 2 million hm per year. 2 , which caused direct economic losses of more than 1 billion yuan. In addition, it will also bring ecological and environmental losses caused by the extensive use of pesticides....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C1/02
Inventor 刘高强魏美才王晓玲杨青牛耕耘
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY