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A deep eutectic solvent-water mixture for synchronously extracting salidroside and tyrosol in Rhodiola rosea and its preparation method and extraction method

A technology of deep eutectic solvent and salidroside, which is applied in the field of utilization of forest source medicine and food resources, can solve problems such as environmental and human hazards, poor extraction effect, waste of resources, etc., to achieve waste of resources, no waste of resources, low cost effect

Active Publication Date: 2020-12-01
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water as an extraction solvent has poor extraction effect, while traditional organic solvents are volatile and easy to remain, causing harm to the environment and human body
In addition, due to the difference in polarity between salidroside and tyrosol, it is difficult to use the same solvent to achieve simultaneous and efficient extraction of salidroside and tyrosol, resulting in a waste of resources

Method used

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  • A deep eutectic solvent-water mixture for synchronously extracting salidroside and tyrosol in Rhodiola rosea and its preparation method and extraction method
  • A deep eutectic solvent-water mixture for synchronously extracting salidroside and tyrosol in Rhodiola rosea and its preparation method and extraction method
  • A deep eutectic solvent-water mixture for synchronously extracting salidroside and tyrosol in Rhodiola rosea and its preparation method and extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Weigh the two components of DES ethylene glycol-levulinic acid according to the molar ratio of 1:1 and mix them evenly, heat and stir at 80°C until a transparent liquid is formed;

[0047] (2) Store at room temperature overnight after the transparent liquid is formed, observe that the liquid has no solid precipitation, add deionized water to the prepared DES to form a DES-water mixture, and deionized water accounts for 40% of the entire mixture mass in the DES-water mixture, the obtained The DES-water mixture can be used for the extraction of salidroside and tyrosol in Rhodiola rosea.

Embodiment 2

[0049] (1) Weigh the two components of DES ethylene glycol-levulinic acid according to the molar ratio of 1:3 and mix them evenly, heat and stir at 100°C until a transparent liquid is formed;

[0050] (2) Store at room temperature overnight after the transparent liquid is formed, observe that the liquid has no solid precipitation, add deionized water to the prepared DES to form a DES-water mixture, and the deionized water of the DES-water mixture accounts for 50% of the entire mixture mass, the resulting DES - The water mixture can be used for the extraction of salidroside and tyrosol in Rhodiola rosea.

Embodiment 3

[0052] (1) Weigh the two components of DES ethylene glycol-levulinic acid according to the molar ratio of 3:1 and mix them evenly, heat and stir at 110°C until a transparent liquid is formed;

[0053] (2) Store at room temperature overnight after the transparent liquid is formed, observe that the liquid has no solid precipitation, add deionized water to the prepared DES to form a DES-water mixture, and the deionized water of the DES-water mixture accounts for 30% of the entire mixture mass, the resulting DES - The water mixture can be used for the extraction of salidroside and tyrosol in Rhodiola rosea.

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Abstract

The invention discloses a deep eutectic solvent (DES)-water mixture used for simultaneous extraction of rhodioloside and 4-(2-hydroxyethyl)phenol from rhodiola root, and a preparation method and an extraction method thereof. The DES-water mixture is prepare through mixing of DES and deionized water, wherein the DES is prepared from glycol and acetylpropionic acid at a molar ratio of (1-3) : (3-1).The DES-water mixture is simple to prepare, is convenient for industrialized preparation, can be biologically degraded easily, is nontoxic, and is high in environment compatibility. The DES-water mixture is low in viscosity, and excellent in fluidity. The DES-water mixture can be used for simultaneous extraction of rhodioloside and 4-(2-hydroxyethyl)phenol from rhodiola root, increasing the extraction rate of rhodioloside and 4-(2-hydroxyethyl)phenol from rhodiola root; operation is safe; and no environment pollution or harm on human body is caused.

Description

technical field [0001] The invention relates to the utilization of forest source medicine and food resources, in particular to a deep eutectic solvent (DES)-water mixture used for extracting salidroside and tyrosol in Rhodiola rosea, a preparation method and an extraction method thereof. Background technique [0002] Rhodiola belongs to the Sedum family Rhodiola is a perennial herb or subshrub. my country's Rhodiola resources account for more than 80% of the world's total. As early as more than 2,000 years ago, Tibetans discovered its medicinal value and used it as medicine to improve their immunity and better resist the harsh external environment. According to the "Four Medical Codes", Rhodiola "is flat in nature, astringent in taste and good at nourishing the lungs, nourishing the kidneys, regulating qi and nourishing blood, and mainly treating fatigue, chest tightness, nausea, and physical weakness". Modern pharmacological studies have shown that Rhodiola has anti-oxida...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H15/18C07H1/08C07C39/11C07C37/70
CPCC07C37/004C07C37/70C07H1/08C07H15/18C07C39/11
Inventor 苏二正吴蓉李默涵曹君曹福亮汪贵斌赵林果王佳宏
Owner NANJING FORESTRY UNIV
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