Preparation method of high-molecular-weight rehmannia polysaccharide and method for steaming fresh rehmannia under high pressure to obtain prepared rehmannia root

A technology for Rehmannia glutinosa and Rehmannia glutinosa is applied in the field of preparing high molecular weight Rehmannia glutinosa polysaccharide and steaming fresh Rehmannia glutinosa to obtain Rehmannia glutinosa, which can solve the problems of being unsuitable for large-scale industrial production, consuming a lot of fuel, and having a long production cycle, and achieving high Efficient material transfer characteristics, energy saving, consistent effect of black and white color inside and outside

Active Publication Date: 2021-06-01
HENAN AGRICULTURAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, "nine steaming and nine drying" has disadvantages such as cumbersome process, high fuel consumption, long production cycle, time-consuming and laborious, and is not suitable for large-scale industrial production.

Method used

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  • Preparation method of high-molecular-weight rehmannia polysaccharide and method for steaming fresh rehmannia under high pressure to obtain prepared rehmannia root
  • Preparation method of high-molecular-weight rehmannia polysaccharide and method for steaming fresh rehmannia under high pressure to obtain prepared rehmannia root
  • Preparation method of high-molecular-weight rehmannia polysaccharide and method for steaming fresh rehmannia under high pressure to obtain prepared rehmannia root

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Example 1. High-pressure integrated steaming of fresh rehmannia glutinosa to obtain rehmannia glutinosa

[0091] Using high-pressure integrated steaming of fresh rehmannia glutinosa to obtain rehmannia glutinosa, the specific steps are as follows:

[0092] Take 100g of fresh rehmannia glutinosa (Jinjiu variety in Wen County, Jiaozuo, Henan Province), cut into thin slices; take 50mL of rice wine (the density of rice wine is about 1g / mL, Huadiao wine, alcohol content is 14.0%, wine age: five years); first infiltrate with rice wine Fresh Rehmannia glutinosa for 6 hours, and then high-pressure steaming at 0.19MPa at 121°C for 3 hours; high-pressure steaming until black and moist, take out, and bake until about 80% dry to obtain cooked rehmannia glutinosa.

[0093] The Rehmannia glutinosa prepared in this example has a bright black appearance and a slightly sweet taste, which meets the standards of the 2020 "Chinese Pharmacopoeia", and the yield rate is over 95%.

[0094] T...

Embodiment 2

[0095] Example 2. High-pressure integrated steaming of fresh rehmannia glutinosa to obtain rehmannia glutinosa

[0096] Using high-pressure integrated steaming of fresh rehmannia glutinosa to obtain rehmannia glutinosa, the specific steps are as follows:

[0097] Take 100g of fresh rehmannia glutinosa (Jinjiu variety in Wen County, Jiaozuo, Henan Province), cut into thin slices; take 20mL of rice wine (the density of rice wine is about 1g / mL, Huadiao wine, alcohol content is 14.0%, wine age: five years); infiltrate with rice wine first Fresh Rehmannia glutinosa for 2 hours, and then high-pressure steaming at 0.12 MPa at 105°C for 2.5 hours, twice; steam until black and moist, take it out, and bake until it is about 80% dry to obtain Rehmannia glutinosa.

[0098] The Rehmannia glutinosa prepared in this example has a bright black appearance and a slightly sweet taste, which meets the standards of the 2020 "Chinese Pharmacopoeia", and the yield rate is over 96%.

[0099] The ph...

Embodiment 3

[0100] Example 3. High-pressure integrated steaming of fresh rehmannia glutinosa to obtain rehmannia glutinosa

[0101] Using high-pressure integrated steaming of fresh rehmannia glutinosa to obtain rehmannia glutinosa, the specific steps are as follows:

[0102] Take 100g of fresh rehmannia glutinosa (Jinjiu variety in Wen County, Jiaozuo, Henan Province), cut into thin slices; take 15mL of rice wine (the density of rice wine is about 1g / mL, Huadiao wine, alcohol content is 14.0%, wine age: five years); first infiltrate with rice wine Fresh Rehmannia glutinosa for 2 hours, and then high-pressure steaming at 0.265MPa at 128°C for 3 hours; high-pressure steaming until black and moist, take it out, and bake until it is about 80% dry to obtain cooked rehmannia glutinosa.

[0103] The rehmannia glutinosa prepared in this example has a bright black appearance and a slightly sweet taste, which meets the standards of the 2020 "Chinese Pharmacopoeia", and the yield rate is over 97%. ...

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Abstract

The invention discloses a preparation method of high-molecular-weight rehmannia polysaccharide and a method for steaming fresh rehmannia under high pressure to obtain prepared rehmannia root. The preparation method of the prepared rehmannia root comprises the following steps: taking yellow wine as an auxiliary material, and directly steaming fresh rehmannia root at high pressure to obtain the prepared rehmannia root. The preparation method of the high-molecular-weight rehmannia polysaccharide comprises the following steps: (1) performing water extraction on rehmannia to obtain a water extract; (2) carrying out alcohol precipitation on the water extract obtained in the step (1), and collecting the precipitate; and (3) dialyzing the precipitated aqueous solution by adopting a dialysis bag, collecting trapped fluid, and drying to obtain the rehmannia polysaccharide, wherein the molecular weight cutoff of the dialysis bag is 2000 to 50000 Da. According to the high-pressure integrated preparation method of the prepared rehmannia root, the step of airing or baking the prepared rehmannia root is omitted, the period is short, the efficiency is high, energy is saved, and the prepared prepared rehmannia root meets the requirement in sensory quality. The radix rehmanniae polysaccharide with the molecular weight of 80,000 or above can be prepared through the method.

Description

technical field [0001] The invention relates to a preparation method of rehmannia polysaccharide and rehmannia glutinosa, in particular to a method for preparing high-molecular-weight rehmannia polysaccharide and a method for obtaining rehmannia glutinosa by high-pressure steaming fresh rehmannia glutinosa. Background technique [0002] Rehmannia glutinosa is the fresh or dried root tuber of Rehmannia glutinosa Libosch. According to the different forms of medicine, rehmannia rehmannia used as medicine includes fresh rehmannia glutinosa, dried rehmannia glutinosa (raw rehmannia glutinosa) after drying or baking to dryness, and rehmannia glutinosa after processing. [0003] Looking back at the herbal literature of past dynasties, there are different processing methods for Rehmannia glutinosa, including steaming, wine boiling, wine stewing, ginger, amomum and charcoal, etc., but steaming has always been the mainstream of rehmannia in various periods. Single steaming and steami...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/804C08B37/00C07H1/08C07H3/06A61K125/00
CPCA61K36/804C08B37/0003C07H1/08C07H3/06A61K2236/10A61K2236/17
Inventor 王丽文春南钱艳艳麻兵继阮元张朋展李晓刘洪雁赵永涛
Owner HENAN AGRICULTURAL UNIVERSITY
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