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Method for extracting pinoresinol diglucoside of eucommia

A technology of glucoside and eucommia turpentine, which is applied in chemical instruments and methods, sugar derivatives, sugar derivatives, etc., can solve the problems of failure to achieve optimal process conditions, low effective utilization rate of eucommia, and low extraction rate, etc., and achieve Ease of operation, low extraction cost, and short-term results

Inactive Publication Date: 2017-02-08
马健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods for extracting eucommia pinoresinol diglucoside mostly use solvent extraction, or use pressurization, microwave and ultrasonic assistance to improve efficiency, but because the optimal process conditions have not been reached, the extraction rate is not very high. Under the conditions of neutral water extraction, the extraction rate is mostly concentrated at about 10%, the extraction rate is not ideal, and the effective utilization rate of Eucommia is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The method for extracting eucommia pinoresinol diglucoside includes the following steps:

[0019] (1) Select the bark of Eucommia ulmoides without pests and diseases and not processed, put it in a drying box for drying, put it in a grinder, and smash it through a 15-mesh sieve for use;

[0020] (2) Put the eucommia powder in a container, add 70% ethanol extractant at a material-to-liquid ratio of 1:10g / ml, soak for 20h, place it in an ultrasonic extractor for 100min, repeat the extraction once;

[0021] (3) After the extraction is completed, perform suction filtration, and concentrate the filtrate under reduced pressure at 60°C. Place the concentrate in a petri dish, pre-frozen at -80°C, and freeze-dry to obtain a powder Pinoresinol diglucoside is solid, and the yield is 1.96%.

Embodiment 2

[0023] The method for extracting eucommia pinoresinol diglucoside includes the following steps:

[0024] (1) Select the bark of Eucommia ulmoides without pests and diseases and not processed, put it in a drying box, dry it, put it in a grinder, and pass it through a 17-mesh sieve for use;

[0025] (2) Put eucommia powder in a container, add 72% ethanol extractant at a material-to-liquid ratio of 1:12g / ml, soak for 22h, place it in an ultrasonic extractor for 12min, repeat the extraction once;

[0026] (3) After the extraction is completed, perform suction filtration, and concentrate the filtrate under reduced pressure at 60°C. Place the concentrate in a petri dish, pre-frozen at -80°C, and freeze-dry to obtain a powder The pinoresinol diglucoside is solid, and the yield is 2.08%.

Embodiment 3

[0028] The method for extracting eucommia pinoresinol diglucoside includes the following steps:

[0029] (1) Select the bark of Eucommia ulmoides without pests and diseases and not processed, put it in a drying box for drying, put it in a grinder, and pass it through a 20-mesh sieve for use;

[0030] (2) Put eucommia powder in a container, add 75% ethanol extractant at a material-to-liquid ratio of 1:15g / ml, soak for 20-30h, then place it in an ultrasonic extractor for 10-20min, repeat the extraction 1~3 times;

[0031] (3) After the extraction is completed, perform suction filtration, and concentrate the filtrate under reduced pressure at 60°C. Place the concentrate in a petri dish, pre-frozen at -80°C, and freeze-dry to obtain a powder The solid of pinoresinol diglucoside has a yield of 2.13%.

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PUM

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Abstract

The invention discloses a method for extracting pinoresinol diglucoside of eucommia. The method comprises the following steps: (1) selecting eucommia bark, drying, crushing, and sieving through a sieve of 15-25 meshes for later use; (2) placing eucommia powder into a container, adding a 70-80% ethanol extraction solvent according to the solid-liquid ratio of 1:10-1:20 g / ml, immersing for 20-30 h, extracting by an ultrasonic extraction instrument for 10-20 min, and repeatedly extracting for 1-3 times; and (3) carrying out suction filtration after extraction, carrying out vacuum concentration on a filtrate at 60 DEG C, placing a concentrate onto a plate, pre-freezing at minus 80 DEG C, and freeze-drying to obtain a powdery pinoresinol diglucoside solid. The extraction method is simple and easy to operate; the extraction cost is low; yield of pinoresinol diglucoside of eucommia is 2.13% and the yield is high. Thus, profit of eucommia is maximized. The method is less time-consuming and fast, is suitable for industrial production, and is worthy of wide promotion.

Description

Technical field [0001] The invention relates to a method for extracting natural products, in particular to a method for extracting eucommia pinoresinol diglucoside. Background technique [0002] Eucommia, also known as bakelite, is a plant of Eucommiaceae. Eucommia ulmoides has very few free amino acids and contains a small amount of protein, which is a complete protein similar to most foods, that is, it can hydrolyze and detect 8 kinds of amino acids necessary for the human body. The 15 mineral elements contained in Eucommia ulmoides were determined, including trace elements such as zinc, copper, and iron, and macro elements such as calcium, phosphorus, potassium, and magnesium. Modern research Eucommia has the ability to remove garbage from the body, strengthen the metabolism of human cells, prevent musculoskeletal aging, balance human blood pressure, decompose cholesterol in the body, reduce body fat, restore blood vessel elasticity, diuresis and clear heat, broad-spectrum an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/26C07H1/08
CPCC07H15/26C07H1/08
Inventor 马健
Owner 马健
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