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Method for preparing dioctyl adipate from waste liquid of alkaloid extracted from Antarctic krill

A technology of dioctyl adipate and Antarctic krill, which is applied in the food and chemical industry to achieve the effects of environmental protection, added value and extended product chain

Inactive Publication Date: 2017-03-22
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no report about the preparation of dioctyl adipate from the waste liquid of Antarctic krill extracting alkaloids. Therefore, the development of a method for reusing the waste liquid of Antarctic krill extracting alkaloids is very important for Antarctic krill resources. The development and utilization of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 200 g of dried Antarctic krill shrimp, add 1400 ml of 95% ethanol (including 7 ml of acetic acid) to cold soak at 4-10°C for 4 days, and filter coarsely. The filter residue is cold soaked again by repeating the above process. After the two filtrates were combined, the filtrate was obtained by fine filtration, and 58 g of paste was obtained by rotary evaporation (the relative density of the paste at 50°C was 1.3).

[0031] Add 300ml pH=3.5H to the paste 2 SO 4 The aqueous solution, mix well, transfer to the separatory funnel, then add 100ml petroleum ether, mix and stand still, separate the upper petroleum ether solution, the lower aqueous solution, and then repeat the above process with the same amount (V) petroleum ether to extract once, about 300ml lower aqueous solution .

[0032] The lower layer aqueous solution was put into a separatory funnel, 100ml ammonia was added to it and mixed well, and then 100ml chloroform was added, mixed well, and then separated into s...

Embodiment 2

[0041] Weigh 200 g of dried Antarctic krill shrimp, add 1000 ml of 95% ethanol (including 5 ml of acetic acid) to cold soak at 4-10°C for 4 days, and filter coarsely. The filter residue is cold soaked again by repeating the above process. After the two filtrates were combined, the filtrate was obtained by fine filtration, which was rotary steamed to obtain 52 g of paste (the relative density of the paste at 50°C was 1.3).

[0042] Add 300ml pH=3.5H to the paste 2 SO 4 The aqueous solution, mix well, transfer to the separatory funnel, then add 100ml petroleum ether, mix and stand still, separate the upper petroleum ether solution, the lower aqueous solution, and then repeat the above process with the same amount (V) petroleum ether to extract once, about 300ml lower aqueous solution .

[0043] The lower layer aqueous solution was put into a separatory funnel, 100ml ammonia was added to it and mixed well, and then 100ml chloroform was added, mixed well, and then separated into stati...

Embodiment 3

[0049] Weigh 200 g of dried Antarctic krill shrimp, add 1600 ml of 95% ethanol (including 8 ml of acetic acid) to cold soak at 4-10°C for 4 days, and filter coarsely. The filter residue is cold soaked again by repeating the above process. After the two filtrates were combined, the filtrate was obtained by fine filtration, which was rotary steamed to obtain 52 g of paste (the relative density of the paste at 50°C was 1.3).

[0050] Add 300ml pH=3.5H to the paste 2 SO 4 The aqueous solution, mix well, transfer to the separatory funnel, then add 100ml petroleum ether, mix and stand still, separate the upper petroleum ether solution, the lower aqueous solution, and then repeat the above process with the same amount (V) petroleum ether to extract once, about 300ml lower aqueous solution .

[0051] The lower layer aqueous solution was put into a separatory funnel, 100ml ammonia was added to it and mixed well, and then 100ml chloroform was added, mixed well, and then separated into stati...

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PUM

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Abstract

The invention discloses a method of preparing dioctyl adipate from a waste liquid through extraction of alkaloid from euphausia superb, wherein the method comprises following steps: (1) adding ethyl acetate to the waste liquid from extraction of alkaloid by euphausia superb for performing extraction, wherein the volume ratio of each addition amount of the ethyl acetate to the waste liquid is (1-2):4; (2) adding n-butyl alcohol to lower water solution for carrying extraction, separating an n-butyl alcohol layer, evaporate-drying the n-butyl alcohol layer to obtain a paste substance, wherein each addition amount of the n-butyl alcohol to the lower water solution is (1-2):4; (3) adding a petroleum ether-ethyl acetate mixed solution, stirring the mixture uniformly and packing a column, loading the paste substance as a sample, and eluting the sample respectively with the petroleum ether-ethyl acetate mixed solutions being (3-1):1 in volume ratio, and collecting eluants; and (4) collecting the eluant being 1:1 in ratio, and concentrating and drying the eluant to obtain the dioctyl adipate. In the invention, the dioctyl adipate is prepared from the waste liquid through extraction of alkaloid from the euphausia superb for the first time, thereby fully utilizing the waste liquid from extraction.

Description

Technical field [0001] The invention relates to a method for preparing dioctyl adipate from the waste liquid of extracting alkaloids from Antarctic krill, and belongs to the technical field of food and chemical industry. Background technique [0002] Antarctic krill (scientific name Euphausia superba Dana) is a kind of krill that lives in the waters of Antarctica. It is shaped like a small shrimp. They feed on tiny phytoplankton. They are about 6 cm in length, weigh about 2 grams, and have a longest life span. 6 years. Antarctic krill is the main food source of Antarctic organisms such as marine mammals, birds and fish, and is a key species in the Antarctic ecosystem. Antarctic krill is rich in lipids, with many types of fatty acids, and most of them are unsaturated fatty acids. Antarctic krill is also rich in mineral elements, including calcium, phosphorus, iron, zinc, and selenium. In addition, krill also contains a variety of active substances, such as enzymes, astaxanthin a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/48C07C67/58C07C67/56C07C69/44
CPCC07C67/48C07C67/56C07C67/58C07C69/44
Inventor 刘代成
Owner SHANDONG NORMAL UNIV
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