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Concentrating and extracting method for saponins

An extraction method and saponin technology are applied in the field of concentrated extraction of plant extracts, which can solve the problems of complex process, large water consumption, and high saponin foam loss, and achieve continuous vacuum concentration, speed up concentration, and improve product yield. rate effect

Active Publication Date: 2015-01-28
广州德谷个人护理用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic solvent method uses a certain purity alcohol aqueous solution (70-95%) to extract the raw materials. The process is complicated, the investment is large, and the product still needs to be refined.
The water extraction method has the advantages of simple production process and production equipment, but it consumes a lot of water, the extract needs to be concentrated, the product has low purity, and has the disadvantages of high energy consumption.
Saponin solution will produce a lot of foam when heated, and saponin solution will decompose due to high temperature when concentrated under normal pressure; saponin solution has excellent foaming performance, although saponin decomposition is avoided during vacuum concentration , but saponin loses more with foam

Method used

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  • Concentrating and extracting method for saponins

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Concentrated extraction process such as figure 1 . For dried honey locust, the husk and seeds of the pod are separated by mechanical separation. The seeds are used to produce polysaccharide gums or high value-added proteins. Separation of seeds and other non-saponin-free components can avoid their influence on the extraction of saponin. The separated pod and husk have a moisture content of ≤12%. It is crushed and passed through a 12-mesh sieve to obtain particles.

[0027] The mass ratio of honey locust husk particles to water is 1:9. Distilled water is added and placed in the extraction tank. The vacuum degree of the extraction tank is controlled to be 0.09MPa, the temperature is stabilized at 50°C, and the extraction is for 1 hour. The water vapor is condensed and returned to the extraction tank.

[0028] Solid-liquid separation: the extract is filtered through a 140 mesh filter to remove insoluble impurities in the liquid, and then transferred to a concentrator.

[0029...

Embodiment 2

[0033] The separated soapberry peel contains less than 12% moisture. It is crushed and passed through a 12-mesh sieve to obtain particles.

[0034] The mass ratio of soapberry peel to water is 1:8, the vacuum degree is controlled to 0.09MPa, the temperature is stabilized at 50°C, and the extraction is for 1 hour. The water vapor is condensed and returned to the extraction tank. Solid-liquid separation: The extract is filtered through a 140 mesh filter to remove insoluble impurities in the liquid, and then transferred to the evaporator. Make-up air vacuum concentration, concentration vacuum degree is 0.04MPa, concentration temperature is 65℃, and concentration is until the solid content of concentrated liquid reaches 15%. Spray drying: the inlet air temperature is controlled at 210°C and the outlet air temperature is 78°C.

[0035] The water content of the saponin product is 9.8%, the saponin content of the product is 85.5%, and the saponin extraction rate is 87.9%.

Embodiment 3

[0037] The mass ratio of honey locust fruit husk to water is 1:6, the vacuum degree is controlled to 0.085MPa, the temperature is stabilized at 45℃, and the extraction is 0.5h. The water vapor is refluxed into the extraction tank after condensation.

[0038] Solid-liquid separation: the extract is filtered through a 140 mesh filter to remove insoluble impurities in the liquid, and then transferred to a concentrator.

[0039] Make-up air vacuum concentration: the vacuum degree of the evaporator is 0.05MPa, the heat transfer oil is passed into the coil of the evaporator, and the inlet temperature of the heating medium is 110°C. When the liquid level in the evaporator rises to 2.5 times the volume of the original aqueous solution, open the emptying valve (air valve) to make the liquid level drop to about 1.5 times the initial solution height. Close the exhaust valve until the vacuum is maintained at 0.05MPa. The temperature of concentration is 80℃, and the concentration is until the ...

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Abstract

The invention provides a concentrating and extracting method for saponins. The method comprises the following steps: (1) crushing; (2) extracting: adding crushed fruit shells or fruit peels to water according to a mass ratio of 1 to 6-9, and extracting an obtained mixture for 0.5-1 h; (3) concentrating: concentrating an extracted aqueous solution at 65-80 DEG C, controlling the pressure of concentrating equipment at a vacuum degree of 0.04-0.055 MPa, and concentrating the extracted aqueous solution until the solid content of the aqueous solution is 15-19 %; and (4) drying: spraying and drying the concentrated aqueous solution. Compared with the traditional normal pressure concentration, the vacuum concentrating and extracting method for concentrating and extracting saponin aqueous solution through supplementing air, provided by the invention, has the advantages as follows: the lower concentration temperature is controlled, decomposition of the saponins and Maillard reactions of soluble impurities of sugars and the like are avoided, the yield, purity and appearance of the product are improved; and compared with common vacuum concentration, the concentrating and extracting method provided by the invention has the advantages as follows: vacuum continuous concentration can be achieved, the concentration speed is accelerated, the losses of the saponins with the foams are greatly reduced and the probability of realizing automatic control is large.

Description

Technical field [0001] The present invention belongs to the field of triterpenoid compounds, and specifically relates to a method for concentrated extraction of plant extracts containing triterpenoid saponin compounds. Background technique [0002] Saponin, also known as saponins or saponins, is a relatively complex compound widely found in the plant kingdom. Most saponins are composed of sugar or uronic acid and sapogenin. According to the different structure of sapogenin, saponins are divided into steroidal saponins and triterpene saponins, among which triterpene saponins are divided into tetracyclic triterpenes and pentacyclic triterpenes. Saponins have the effect of reducing the surface tension of liquids, and their aqueous solutions can produce persistent foam after shaking, and they also have emulsifying properties. Triterpene saponins have a wide range of biological activities. Research results show that they have hemolytic, anti-cancer, anti-inflammatory, antibacterial, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J63/00
Inventor 蒋建新唐勇陈清英李瑞朱莉伟李正发
Owner 广州德谷个人护理用品有限公司