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Method for extracting glutinous rehmannia oligose and glutinous rehmannia polysaccharide from glutinous rehmannia

A technology of rehmannia polysaccharides and rehmannia oligosaccharides, applied in chemical instruments and methods, oligosaccharides, sugar derivatives, etc., can solve the problems of complicated process and high production cost, and achieve the effect of simple extraction process and low production cost

Inactive Publication Date: 2009-12-30
厦门牡丹香化实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method for extracting rehmannia oligosaccharides and rehmannia polysaccharides from rehmannia rehmannia in the prior art is complicated in process and high in production cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, a method for extracting rehmannia oligosaccharides and rehmannia polysaccharides from rehmannia glutinosa of the present invention, it comprises the following steps:

[0033] Step a. Wash the fresh rehmannia rehmannia harvested in the field with clear water, grind it, and centrifuge at high speed in a centrifuge to obtain rehmannia rehmannia filtrate and rehmannia glutinosa residue;

[0034] Step b. Soak the Rehmannia glutinosa residue in water for 8 hours and then centrifuge once, discard the residue, combine the secondary filtrate, and remove mechanical impurities by filter press;

[0035] Step c. separating the filtrate into A liquid ≥ 50000D and B liquid ≤ 50000D through a 50000D (Dalton) ultrafiltration membrane;

[0036] Step d. Separating liquid B through a 10,000D ultrafiltration membrane into liquid C of 10,000 to 50,000D and liquid D of ≤10,000D;

[0037] Step e. separating liquid D through a 1000D sodium filter membrane into liquid E of 1000 to...

Embodiment 2

[0041] Embodiment 2, a method for extracting rehmannia oligosaccharides and rehmannia polysaccharides from rehmannia glutinosa of the present invention, it comprises the following steps:

[0042] Step a. Soak the dried rehmannia glutinosa in water for 9 hours, grind it, and centrifuge at high speed with a centrifuge to obtain the rehmannia glutinosa filtrate and rehmannia slag;

[0043] Step b. Soak the Rehmannia glutinosa residue in water for 9 hours and then centrifuge once, discard the residue, combine the secondary filtrate, and remove the mechanical impurities by pressing with a filter press;

[0044] Step c. separating the filtrate into A liquid ≥ 50000D and B liquid ≤ 50000D through a 50000D (Dalton) ultrafiltration membrane;

[0045] Step d. Separating liquid B through a 10,000D ultrafiltration membrane into liquid C of 10,000 to 50,000D and liquid D of ≤10,000D;

[0046] Step e. separating liquid D through a 1000D sodium filter membrane into liquid E of 1000 to 10000D ...

Embodiment 3

[0050] Embodiment three, a method for extracting rehmannia oligosaccharides from rehmannia rehmanniae of the present invention, it comprises the following steps:

[0051] Step a. Wash and grind the fresh rehmannia harvested in the field with water, or soak the dried rehmannia in water for 7 hours, then grind it, and centrifuge at high speed in a centrifuge to obtain the rehmannia filtrate and rehmannia residue;

[0052] Step b. Soak the Rehmannia glutinosa residue in water for 6 hours and then centrifuge once, discard the residue, combine the secondary filtrate, and filter with a filter press to remove mechanical impurities;

[0053] Step c. separating the filtrate through a 50000D (Dalton) ultrafiltration membrane to obtain the supernatant and submembrane liquid;

[0054] Step d. Take the submembrane liquid obtained in the above step c and then separate it through a 10000D ultrafiltration membrane to obtain the supernatant and submembrane liquid;

[0055] Step e. Take the su...

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PUM

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Abstract

The invention discloses an extracting method of oligosaccharide and polysaccharide of glutinous rehmannia from rehmannia root, which comprises the following steps: washing fresh rehmannia root through clean water; grinding; or immersing dry rehmannia root for 1-10h; grinding; centrifuging through high-speed centrifuger to obtain filtrate of glutinous rehmannia and slag of glutinous rehmannia; hyperfiltering through 50000D hyperfilter film,10000D hyperfilter film, 1000D nano-filter film and 500D nano-filter film grade by grade; condensing liquid on the film until the sugar content is about 10-50%; cooling; adding alcohol to stir 0.1-1h; filtering; drying the filter slag under 100deg.c to obtain the polysaccharide product; spraying to dry after condensing liquid in the vacuum evaporator until the sugar content is 10-50%; spraying to dry; obtaining the oligosaccharide product with stachyose not less than 80%.

Description

technical field [0001] The invention relates to a method for extracting rehmannia oligosaccharides and rehmannia polysaccharides from rehmannia glutinosa. Background technique [0002] Rehmannia glutinosa is a kind of traditional Chinese medicinal material, also known as rehmannia glutinosa. It tastes sweet and bitter and is cold in nature. It can clear away heat, promote body fluid, moisten dryness, cool blood, and stop bleeding. It is the dry tuberous root of Huai Di Huang, a plant of the family Scrophulariaceae. Rehmannia has the effects of nourishing yin and clearing heat, cooling blood and stopping bleeding; it can treat symptoms such as yin deficiency and low fever, fever, irritability, lack of body fluid, spots and rashes, hemoptysis, vomiting blood, irregular menstruation, hematuria, and metrorrhagia. Rehmannia glutinosa is sweet in taste and warm in nature; it belongs to the liver and kidney meridian; it has the effects of nourishing yin, nourishing blood and nouri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H1/08C07H3/06C08B37/00
Inventor 林翔云
Owner 厦门牡丹香化实业有限公司