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Method for re-preparing oil from Antarctic krill defatted dried shrimp dregs

A technology of Antarctic krill and dried shrimp, which is applied in the fields of chemistry, medicine and food, can solve the problems of ineffective extraction of oil from shrimp dregs, different properties, and different oil components, etc., and achieves easy large-scale production, low production cost, and improved yield effect

Inactive Publication Date: 2021-01-08
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, shrimp dregs are different in nature from Antarctic krill shrimp powder before the oil is extracted, and the oil components are also different. The existing oil extraction methods cannot effectively extract the oil in shrimp dregs, so there is an urgent need for a The method of re-extracting fat from medium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 A kind of method for re-extracting oil from Antarctic krill shrimp degreased dried shrimp residue

[0021] The method is as follows: 0.6-1kg of Antarctic krill degreasing dried shrimp residue is pulverized with a vibrating drug ultrafine pulverizer, a stainless steel vibrating rod Ф20×174mm, an amplitude of 3-5mm, ultrafine pulverization for 1 hour, and the shrimp residue powder is poured out. Take 100 g of superfinely pulverized shrimp residue powder, add 500 ml of a mixture of n-hexane and ethanol (n-hexane:ethanol=1:1), stir and extract for 45 minutes, and filter to obtain a filtrate. The filter residue was extracted twice as in the above process for a total of 3 times, the filtrate was combined for 3 times, and the solvent was removed by rotary evaporation at 70°C to obtain 5.5 g of oil, that is, the oil yield was 5.5%.

Embodiment 2

[0022] Embodiment 2 A kind of method for re-extracting oil from Antarctic krill shrimp degreased dried shrimp residue

[0023] The method is as follows: 0.6-1kg of Antarctic krill defatted and dried shrimp residue is pulverized with a vibrating drug ultrafine pulverizer, a stainless steel vibrating rod Ф20×174mm, an amplitude of 3-5mm, ultrafine pulverization for 0.5h, and the shrimp residue powder is poured out. Take 100 g of superfinely pulverized shrimp residue powder, add 400 ml of a mixture of n-hexane and ethanol (n-hexane:ethanol=3:1), stir and extract for 1 hour, and filter to obtain a filtrate. The filter residue was extracted twice as in the above process for a total of 3 times, the filtrate was combined for 3 times, and the solvent was removed by rotary evaporation at 68°C to obtain 4.67 g of oil, that is, the oil yield was 4.67%.

Embodiment 3

[0024] Embodiment 3 A kind of method of extracting oil again from Antarctic krill shrimp degreased dried shrimp residue

[0025] The method is as follows: 0.6-1kg of Antarctic krill degreasing dried shrimp residue is pulverized with a vibrating drug ultrafine pulverizer, a stainless steel vibrating rod Ф20×174mm, an amplitude of 3-5mm, ultrafine pulverization for 1 hour, and the shrimp residue powder is poured out. Take 100 g of superfinely pulverized shrimp residue powder, add 800 ml of a mixture of n-hexane and ethanol (n-hexane:ethanol=2:1), stir and extract for 0.5 h, and filter to obtain a filtrate. The filter residue was extracted twice as in the above process for a total of 3 times, the filtrate was combined for 3 times, and the solvent was removed by rotary evaporation at 72° C. to obtain 5.9 g of oil, that is, the oil yield was 5.9%.

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Abstract

The invention belongs to the fields of foods, chemistry and medicine and particularly relates to a method of re-preparing oil from defatted dry residue of Euphausia superba. The method comprises: micronizing dry residue, extracting with a mixed solvent of n-hexane and ethyl alcohol, and subjecting filtrate of extract to rotary evaporation to obtain oil. The oil yield is 4.67-5.9%.

Description

technical field [0001] The invention belongs to the fields of food, chemistry and medicine, and particularly relates to a method for preparing oil from Antarctic krill degreasing dried shrimp residue. Background technique [0002] Antarctic krill is a huge biological resource (about 5-5 billion tons, depending on different estimation methods) living in the Antarctic ocean. Antarctic krill is rich in oil, which varies with season, age, gender, food abundance, environment and other factors. Oil is rich in unsaturated fatty acids (such as EPA, DHA, DPA, etc.), astaxanthin and its lipids, phospholipids, vitamin E and other nutrients. At present, Antarctic krill oil is a high value-added product widely sold in the world. In the past, Antarctic krill oil products were mainly produced in Canada, Japan, Norway and the United States. After 2000, many manufacturers in my country have begun to produce Antarctic krill oil that conforms to international standards. [0003] Chinese pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10
CPCC11B1/10
Inventor 刘代成
Owner SHANDONG NORMAL UNIV
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