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Machine centrifugal extraction solvent extraction method of extraction of flavonoids from ginkgo biloba leaves

by:Deyuan      2020-08-23
Ginkgo biloba was used as a drug in our country has 5000 years of history, from the present stage of ginkgo biloba chemical composition analysis, mainly flavonoids, terpenoids, alkaloids, polysaccharides, phenols, amino acids and trace elements, which has the function of the medicinal composition is mainly flavonoids. Research has proved that flavonoids have improve human body disease-resistant ability and self-healing capability, and anti-aging, regulating endocrine and lipid metabolism, promote the growth of muscle, and other functions. In addition, the flavonoids also has antifungal, inhibition of fungus, and the function of tyrosine protein kinase activity.
there are many different kinds of the extraction process of folium ginkgo and solvent extraction, supercritical fluid extraction, ultrasonic assisted extraction and microwave method. The fluid extraction due to large equipment, operation difficult problems such as difficult to for large-scale industrial production. Tianyi extraction using. cwl - M type centrifugal extraction solvent extraction to extract flavonoids from ginkgo biloba leaves process:
pick fresh ginkgo biloba to rinse, and dry powder extract, with different concentrations of ethanol extraction and filtration to extraction and reverse extraction, vacuum drying.
solvent extraction to extract ginkgo biloba USES the main solvent of ethanol and aqueous solution, acetone - Aqueous solution and NaOH Such as ethanol. Crude extractings from fine extract used in the preparation of refined, on the basis of commonly used liquid liquid extraction, precipitation and adsorption and elution method. With the opening of the 60% acetone solvent crude extract, degreasing, again to 15 process is made to the extract ginkgo phenolic acids, etc. 氢氧化钠- Aqueous extraction effect is very good, NaOH - Ethanol solution.
CWL - 50 series centrifugal extraction machine working principle:

weight two-phase mixing and mass transfer process solution according to certain proportion respectively from two feeding tube into the drum and shell type ring gap formed between the mixed zone, with the aid of the rotation of the drum, through the turbine disc and the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer. Complete mixing and mass transfer process. Two phase separation process

mixture under the action of vortex disk into the rotary drum, in the plate to form the bulkhead area, mixture quickly with synchronous rotary drum, in under the action of centrifugal force, the heavier than major phase fluid in the process of upward mobility and gradually away from the drum center on the drum wall; Small proportion of liquid phase gradually away from the drum wall and on to the center, after clarification of two phase fluid respectively through their weir plate into the collection chamber and the tube was closed to derivation, respectively, to complete two phase separation process.
CWL - Description of 50 series centrifugal extraction machine performance characteristics:

. cwl - 50 series centrifugal extraction machine belongs to the type testing equipment, tianyi extraction consider for the customer, to avoid blind investment, industrial application of large equipment. Developed such type testing equipment, if there is customer demand, we will be able to design and manufacture of drum - 20 mm in diameter Any centrifugal extraction machine, 50 mm. cwl - 50 type centrifugal extraction machine drum diameter of 50 mm.
this device can realize high speed long time operation, and low noise, and run very smoothly.
the extraction equipment can be run on the same chassis, which can realize a multipolar counterflow extraction function, the machine in high speed smooth running, solve the problem of the dynamic balance and resonance, the equipment represents the advanced level in the manufacturing high-speed centrifuge technology.
can provide all kinds of important data for large industrial equipment, based on our many years of experience with. cwl - 50 series of pilot equipment of the experimental data can completely meet the demand.
to apply a small quantity production, can be single stage operation can multistage continuous countercurrent operation is suitable for industrial equipment used in front of the various data collection.

CWL - 50 series centrifugal extraction machine technical parameters:

CWL50 - N

CWL50 - M

drum diameter ( mm)

50 50

mixed flux ( L / h)

50 50

speed ( r / min)


0- 2750

the separation factor 423


run power ( 千瓦)

0. 18

0. 18


220 v 220 v

flow ratio scope for

1/30/1/30 ~

/ / 30 to 1 30/1

suitable viscosity ( cps)

3000 or less

3000 or less

scope (difference in proportion between g/ml)

0. 03~3

0. 03 ~ 3

solid content in liquid
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