Method of preparing dioctyl adipate from waste liquid through extraction of alkaloid from euphausia superba

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: 2015-12-09
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 developmen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 200g of Antarctic krill dried shrimp, add 1400ml of 95% ethanol (containing 7ml of acetic acid) for cold soaking at 4-10°C for 4 days, and coarsely filter. The filter residue was cold-soaked once 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 was 1.3 as measured at 50° C.).

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

[0032] The aqueous solution of the lower layer was put into a separatory funnel, 100ml of ammonia water was added therein and mixed evenly...

Embodiment 2

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

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

[0043]The aqueous solution of the lower layer was put into a separatory funnel, 100ml of ammonia water was added therein and mixed eve...

Embodiment 3

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

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

[0051] The aqueous solution of the lower layer was put into a separatory funnel, 100ml of ammonia water was added therein and mixed ev...

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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, which 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 Antarctic waters. It is shaped like a small shrimp. They use tiny phytoplankton as food. They are about 6 cm long and weigh about 2 grams. The longest life span can reach 6 years. . Antarctic krill is the main food source for Antarctic organisms such as marine mammals, birds and fish, and is a key species in the Antarctic ecosystem. Antarctic krill is rich in lipids and contains many types of fatty acids, most of which are unsaturated fatty acids; Antarctic krill is also rich in mineral elements, including calcium, phosphorus, iron, zinc, selenium, etc. In addition, krill also contains a variety of active substances, such as enzymes, as...

Claims

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Application Information

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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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