CN109464489A - A method of extracting flavones from sweet potato stem leaf - Google Patents
A method of extracting flavones from sweet potato stem leaf Download PDFInfo
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- CN109464489A CN109464489A CN201811411314.5A CN201811411314A CN109464489A CN 109464489 A CN109464489 A CN 109464489A CN 201811411314 A CN201811411314 A CN 201811411314A CN 109464489 A CN109464489 A CN 109464489A
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- liquid
- sweet potato
- stem leaf
- potato stem
- flavones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/18—Magnoliophyta (angiosperms)
- A61K36/185—Magnoliopsida (dicotyledons)
- A61K36/39—Convolvulaceae (Morning-glory family), e.g. bindweed
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
- A61K2236/10—Preparation or pretreatment of starting material
- A61K2236/15—Preparation or pretreatment of starting material involving mechanical treatment, e.g. chopping up, cutting or grinding
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
- A61K2236/10—Preparation or pretreatment of starting material
- A61K2236/17—Preparation or pretreatment of starting material involving drying, e.g. sun-drying or wilting
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
- A61K2236/30—Extraction of the material
- A61K2236/33—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones
- A61K2236/331—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones using water, e.g. cold water, infusion, tea, steam distillation, decoction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
- A61K2236/50—Methods involving additional extraction steps
- A61K2236/53—Liquid-solid separation, e.g. centrifugation, sedimentation or crystallization
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- Health & Medical Sciences (AREA)
- Natural Medicines & Medicinal Plants (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Alternative & Traditional Medicine (AREA)
- Biotechnology (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Preparation Of Fruits And Vegetables (AREA)
Abstract
The invention belongs to Extracting Technique of Flavonoids fields, this method comprises the following steps: by dry sweet potato stem leaf particle and pure water, it is added in kettle according to the ratio of 1:8, it is heated to 90 DEG C, it boils 40 minutes, when Ph value is 5, substance in kettle is squeezed, liquid after squeezing is sent from scheming processing, carries out secondary treatment after gained liquid precipitation；Liquid after secondarily purified send concentration cylinder, it is heated to 90 DEG C and boiling floating glomeration processing is carried out to the liquid, when amount containing group reaches 2%, the liquid is sent to the storage tank of spray tower, storage tank heat makes the liquid keep 35-45 DEG C of temperature, liquid in storage tank in tower after the separating treatment of 150-200 DEG C of hot wind by isolating the flavones in liquid in penetrating spray tower；The invention the method is all made of physics mode purification in the overall process for extracting flavones, does not add any chemical reagents so that the flavones extracted is environmentally protective, health care, eat it is without side-effects.
Description
Technical field
The invention belongs to Extracting Technique of Flavonoids fields, and in particular to a method of flavones is extracted from sweet potato stem leaf.
Background technique
Sweet potato (also known as pachyrhizus, sweet potato, sweet potato etc.), Convolvulaceae annual herb plant, it is four big to be that China is cultivated extensively
One of crops, about 10,000,000 hm2/y of China's sweet potato cultivated area or so, gross annual output amount is up to 1.5 hundred million tons, and sweet potato is usually with edible
Based on root tuber, leaf, stalk (stem) as byproduct, depolarization small part be processed to food or as feed stripped outside, exhausted big portion
Point it is discarded in field, is allowed to freely to air-dry or rotten, surrounding enviroment are caused with certain pollution.Studies have shown that red
Contain profuse bioactive ingredients, such as flavonoids, chlorogenic acid, polysaccharide and carotenoid in potato leaf and stem.Wherein do
In product: Flavone content is about 0.2% or so, and chlorogenic acid content is in 0.15-0.3% or so, polyoses content 3-7% or so.It is yellow
Ketone has the function of a variety of physiological hygienes: such as anticancer, anti-inflammatory, adjusting endocrine and raising immunity, is a kind of emerging function food
One of important biomolecule active factors in product.
Currently, recording the method that related sweet potato stem leaf extracts flavones in the patent literature is to be mentioned using alcohol, resin etc.
What pure method carried out.It is purified using the above method, although improving the recovery rate of flavones, it is residual that there are chemical reagent
The disadvantage stayed influences the use value of flavones.
Summary of the invention
It is an object of the invention to overcome shortcoming in the prior art, provide it is a kind of do not add any chemical reagents from
The method of flavones is extracted in the cauline leaf of sweet potato.
In order to achieve the object of the present invention, we will adopt the following technical scheme that and be implemented.
A method of extracting flavones from sweet potato stem leaf, it is characterised in that: this method comprises the following steps:
(1), it is added in extraction kettle after crushing dry sweet potato stem leaf, pure water is added according to the ratio of 1:8, is heated to
It 90 DEG C, boils 40 minutes, when the Ph value of liquid is 5 in kettle, the solidliquid mixture in extraction kettle is sent to squeezer and is squeezed；
(2), the liquid after step (1) squeezing is sent from scheming and carries out purification process, and the liquid after purification process send precipitating
Cylinder precipitates 1 hour, then carries out secondary centrifuging purification process；
(3), through step (2), treated that liquid send concentration cylinder, is heated to 90 DEG C and carries out boiling floating collection to the liquid
Block processing；
(4) liquid is sent to the storage tank of spray tower when amount containing group reaches 2% through step (3) treated liquid,
Storage tank heat makes the liquid keep 35-45 DEG C of temperature, and the liquid in storage tank is entered by the tower top of spray tower, is sprayed by nozzle
It nebulizes, 150-200 DEG C of hot wind is entered by tower lower part, so that the moisture in liquid is become water with misty liquid close contact and is steamed
Gas is discharged with 85-90 DEG C of hot wind from tower top, and the flavones in liquid is isolated in tower.
Further, described crush is the particle that the sweet potato stem leaf after drying is ground into 2-8 millimeters.
Further, the mode of the drying is tedded one time during natural air drying for every 3-5 days using natural air drying, is prevented
Only sweet potato stem leaf is mouldy.
Further, the boiling floating glomeration processing need to be handled primary every half an hour, and continuous processing is three times.
Further, the revolving speed of the centrifuge is 2000 revs/min, the filter cloth of built-in 300 mesh.
Further, the optimum temperature of the hot wind into spray tower is 180 DEG C.
Beneficial effect
The invention the method is all made of physics mode purification in the overall process for extracting flavones, does not add any chemistry examination
Agent so that the flavones extracted is environmentally protective, health care, eat it is without side-effects.
Specific embodiment
The present invention is described further in conjunction with the embodiments.
In one embodiment, a kind of method for extracting flavones from sweet potato stem leaf includes the following steps:
(1), 1 kilogram of dry sweet potato stem leaf is crushed to the particle for being 2 millimeters, is added in extraction kettle, 8 kilograms of addition is pure
Water is heated to 90 DEG C, boils 40 minutes, tests the Ph value of liquid in kettle, when Ph value is 5, by the solidliquid mixture in extraction kettle
It send to squeezer and is squeezed；
(2), the liquid after squeezing be sent from scheming (revolving speed of centrifuge be 2000 revs/min, the filter cloth of built-in 300 mesh) into
Row purification process, the liquid after purification process send pretipitatin jar to precipitate 1 hour, then carry out secondary centrifuging purification process；
(3), secondarily purified treated that liquid send concentration cylinder, is heated to 90 DEG C and carries out boiling floating glomeration to the liquid
Processing, the processing of boiling floating glomeration need to be primary every half an hour processing, and continuous processing is three times；
(4) boiling floating glomeration treated liquid send the liquid to spray tower if its amount containing group reaches 2%
Storage tank, storage tank heat make the liquid keep 40 DEG C of temperature, and the liquid in storage tank is entered by the tower top of spray tower, by nozzle quilt
Atomisation, 180 DEG C of hot wind are entered by tower lower part, so that the moisture in liquid is become vapor with misty liquid close contact
It is discharged with the hot wind after cooling from tower top, the flavones in liquid is isolated in tower.
In one embodiment, the mode of the drying is turned over during natural air drying for every 3-5 days using natural air drying
It shines one time, prevents sweet potato stem leaf mouldy.
Claims (6)
1. a kind of method for extracting flavones from sweet potato stem leaf, it is characterised in that: this method comprises the following steps:
(1), it is added in extraction kettle after crushing dry sweet potato stem leaf, pure water is added according to the ratio of 1:8, is heated to 90
DEG C, it boils 40 minutes, when the Ph value for testing liquid in kettle is 5, the solidliquid mixture in extraction kettle is sent to squeezer and is squeezed；
(2), the liquid after step (1) squeezing is sent from scheming and carries out purification process, and the liquid after purification process send pretipitatin jar heavy
It forms sediment 1 hour, then carries out secondary centrifuging purification process；
(3), through step (2), treated that liquid send concentration cylinder, and being heated to 90 DEG C, to carry out boiling floating glomeration to the liquid dense
Contracting processing；
(4) liquid is sent to the storage tank of spray tower, storage tank when amount containing group reaches 2% through step (3) treated liquid
Heating makes the liquid in it keep 35-45 DEG C of temperature, and the liquid in storage tank is entered by the tower top of spray tower, is sprayed by nozzle
It nebulizes, 150-200 DEG C of hot wind is entered by tower lower part, becomes the moisture of misty liquid with misty liquid close contact
Vapor is discharged with hot wind from tower top, and the flavones in misty liquid is isolated in tower.
2. a kind of method for extracting flavones from sweet potato stem leaf according to claim 1, it is characterised in that: the crushing is
Sweet potato stem leaf after drying is ground into 2-8 millimeters of particle.
3. a kind of method for extracting flavones from sweet potato stem leaf according to claim 1, it is characterised in that: the drying
Mode is tedded one time during natural air drying using natural air drying, prevents sweet potato stem leaf mouldy for every 3-5 days.
4. a kind of method for extracting flavones from sweet potato stem leaf according to claim 1, it is characterised in that: the boiling drift
The processing of float assembly block need to be handled once every half an hour, and continuous processing is three times.
5. a kind of method for extracting flavones from sweet potato stem leaf according to claim 1, it is characterised in that: the centrifuge
Revolving speed be 2000 revs/min, the filter cloth of built-in 300 mesh.
6. a kind of method for extracting flavones from sweet potato stem leaf according to claim 1, it is characterised in that: described to enter spray
The optimum temperature of the hot wind of mist tower is 180 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811411314.5A CN109464489A (en) | 2018-11-26 | 2018-11-26 | A method of extracting flavones from sweet potato stem leaf |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811411314.5A CN109464489A (en) | 2018-11-26 | 2018-11-26 | A method of extracting flavones from sweet potato stem leaf |
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| Publication Number | Publication Date |
|---|---|
| CN109464489A true CN109464489A (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811411314.5A Pending CN109464489A (en) | 2018-11-26 | 2018-11-26 | A method of extracting flavones from sweet potato stem leaf |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234528A (en) * | 2021-04-29 | 2021-08-10 | 张世华 | Preparation method of sunflower disc extract |
-
2018
- 2018-11-26 CN CN201811411314.5A patent/CN109464489A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234528A (en) * | 2021-04-29 | 2021-08-10 | 张世华 | Preparation method of sunflower disc extract |
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