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Two-phase deep eutectic solvent for simultaneously separating and extracting multiple active components from waste ginkgo nut testa and extraction method thereof

A eutectic solvent and simultaneous separation technology, applied in separation methods, solvent extraction, solid solvent extraction and other directions, can solve the problems of large amount of organic solvent, complicated operation, low efficiency, etc., and achieve high extraction efficiency, simple operation, and preparation. simple method effect

Pending Publication Date: 2022-02-18
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] As a green solvent, the two-phase deep eutectic solvent provided by the invention has the characteristics of simple preparation, stable hydrogen bond, easy biodegradation, safety and no pollution, etc., and can simultaneously extract and separate ginkgolic acid in the outer testa of ginkgo fruit in a green, safe and efficient manner , flavonoids, terpene lactones and proanthocyanidins, which solve a series of problems in the existing methods, such as large amount of organic solvent used, complicated operation, high cost and low efficiency

Method used

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  • Two-phase deep eutectic solvent for simultaneously separating and extracting multiple active components from waste ginkgo nut testa and extraction method thereof
  • Two-phase deep eutectic solvent for simultaneously separating and extracting multiple active components from waste ginkgo nut testa and extraction method thereof
  • Two-phase deep eutectic solvent for simultaneously separating and extracting multiple active components from waste ginkgo nut testa and extraction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (1) Weigh menthol, hexanol and lauric acid according to the molar ratio of 1:0.4:0.1 and mix them evenly, heat at 80°C until a transparent liquid is formed, which is the deep eutectic solvent DES-U, as a two-phase deep eutectic The hydrophobic phase of the solvent;

[0074](2) Weigh choline chloride, citric acid and ethylene glycol according to the molar ratio of 2:2:1 and mix them evenly, heat at 80°C until a transparent liquid is formed, which is the deep eutectic solvent DES-D, and DES -D is mixed with water according to the mass ratio of 7:3 to obtain the hydrophilic phase of the two-phase deep eutectic solvent;

[0075] (3) Mix the hydrophobic phase and the hydrophilic phase according to the volume ratio of 9:1, separate after standing, and obtain a two-phase deep eutectic solvent.

Embodiment 2

[0077] (1) Weigh menthol, hexanol and lauric acid according to the molar ratio of 1:0.8:0.2 and mix them evenly, heat at 80°C until a transparent liquid is formed, which is the deep eutectic solvent DES-U, as a two-phase deep eutectic The hydrophobic phase of the solvent;

[0078] (2) Weigh choline chloride, citric acid and ethylene glycol according to the molar ratio of 2.5:1.5:1 and mix them uniformly, heat at 80°C until a transparent liquid is formed, which is the deep eutectic solvent DES-D, and DES -D is mixed with water according to the mass ratio of 4:6 to obtain the hydrophilic phase of the two-phase deep eutectic solvent;

[0079] (3) Mix the hydrophobic phase and the hydrophilic phase at a volume ratio of 1:9, separate after standing, and obtain a two-phase deep eutectic solvent.

Embodiment 3

[0081] (1) Weigh menthol, hexanol and lauric acid according to the molar ratio of 1:1.6:0.4 and mix them evenly, heat at 80°C until a transparent liquid is formed, which is the deep eutectic solvent DES-U, as a two-phase deep eutectic The hydrophobic phase of the solvent;

[0082] (2) Weigh choline chloride, citric acid and ethylene glycol according to the molar ratio of 3:2:1 and mix them uniformly, heat at 80°C until a transparent liquid is formed, which is the deep eutectic solvent DES-D, and DES -D is mixed with water according to the mass ratio of 4.5:5.5 to obtain the hydrophilic phase of the two-phase deep eutectic solvent;

[0083] (3) Mix the hydrophobic phase and the hydrophilic phase according to the volume ratio of 8:2, separate after standing, and obtain a two-phase deep eutectic solvent.

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Abstract

The invention discloses a preparation and extraction method of a two-phase deep eutectic solvent for simultaneously separating and extracting multiple active components from waste ginkgo nut testa and a product obtained thereby. The two-phase deep eutectic solvent is prepared from a hydrophobic phase and a hydrophilic phase according to a certain volume ratio. The hydrophobic phase is a hydrophobic deep eutectic solvent prepared from menthol, hexanol and lauric acid; the hydrophilic phase is formed by mixing a hydrophilic deep eutectic solvent and water, and the hydrophilic deep eutectic solvent is prepared from choline chloride, citric acid and ethylene glycol. The two-phase deep eutectic solvent prepared by the invention is a green solvent, and has the characteristics of simple preparation, stable hydrogen bond, easy biodegradation, safety, no pollution and the like; the solvent can be used for simultaneously separating and extracting the hydrophobic active ingredient ginkgolic acid and the hydrophilic active ingredients ginkgo flavone, terpene lactone and procyanidine from the waste ginkgo fruit testa, and is high in extraction rate, low in cost, simple to operate and safe to use.

Description

technical field [0001] The invention belongs to the high-value utilization of agricultural and forestry waste biological resources, and specifically relates to a two-phase deep eutectic solvent for simultaneously separating and extracting multiple active components from the outer testa of waste ginkgo fruit and an extraction method thereof. Background technique [0002] Ginkgo biloba (Ginkgo biloba L.) is a plant belonging to the Ginkgo family and the genus Ginkgo. Ginkgo biloba is a rare tree species left over from the Mesozoic Era. It is a special product in China. Only Tianmu Mountain in Zhejiang Province has wild trees. Ginkgo biloba is a fast-growing and precious timber tree species, which can be used for construction, furniture, interior decoration, sculpture, drawing board, etc. Ginkgo biloba is edible and medicinal. Ginkgo biloba can be used as medicine and insecticide, as well as feed and fertilizer. [0003] The modern medical research of Ginkgo biloba originate...

Claims

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Application Information

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IPC IPC(8): B01D11/02
CPCB01D11/0288
Inventor 苏二正董其惠吴蓉张芳曹福亮汪贵斌王佳宏
Owner NANJING FORESTRY UNIV
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