CN100464764C - Composition of white mulberry leaf blood-sugar-reducing effective components and preparing method - Google Patents

Composition of white mulberry leaf blood-sugar-reducing effective components and preparing method Download PDF

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CN100464764C
CN100464764C CNB2006100387132A CN200610038713A CN100464764C CN 100464764 C CN100464764 C CN 100464764C CN B2006100387132 A CNB2006100387132 A CN B2006100387132A CN 200610038713 A CN200610038713 A CN 200610038713A CN 100464764 C CN100464764 C CN 100464764C
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folium mori
mulberry leaf
exchange resin
drying
supernatant
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欧阳臻
贾晓斌
李永辉
常钰
江涛涛
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Jiangsu University
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Abstract

The present invention relates to a mulberry leaf effective component composition for reducing blood sugar and its preparation method. Said mulberry leaf effective component composition contains 20-80% of mulberry leaf polysaccharide and 80-20% of mulberry leaf alkaloid in which 1-deoxynojirimycin content is greater than 50%. Said preparation method includes the following steps: removing impurity, drying, pulverizing to obtain mulberry leaf powder, using organic solvent to make extraction, filtering, removing residue, using hot water to make extraction, filtering, adding ethyl alcohol into filtrate to make its concentration be 40%-80%, filtering to obtain supernatant fluid and precipitate, using cation exchange resin and anion exchange resin to make separation and remove impurity, concentrating and drying so as to obtain mulberry leaf alkaloid.

Description

Composition of white mulberry leaf blood-sugar-reducing effective components and preparation method
Technical field
The present invention relates to composition of white mulberry leaf blood-sugar-reducing effective components and preparation method, belong to the field of Chinese medicines.
Background technology
Planting mulberry and breeding silkworm are one of conventional industries of China's agricultural, and Folium Mori have a large amount of resources advantages in China, but traditional sericulture industry only is used for sericulture, and purposes is single.Be wasted with regard to a large amount of Folium Mori surplus arranged by normal condition every year, therefore seek the multipurpose exploitation channel of Folium Mori, be developed to medicine or health product, both can make full use of the natural resources, can promote the sericulture industry development for sericulture industry finds new growth engines again.
And Folium Mori just are useful on " only quenching one's thirst " at the Chinese medicine ancient prescription, promptly modern diabetes.Develop natural safe treatment Glucovance or the existing a lot of researchs of hypoglycemic functional food with Folium Mori, about the white mulberry leaf blood-sugar-reducing composition some relevant patents have been arranged at present: as application number: 01129976.2 " a kind of mulberry leaf polyose and uses thereof " discloses a kind of mulberry leaf polyose and purposes of extracting with Folium Mori, and polysaccharide molecular weight is between 1500~50000 dalton; Application number: alkaloid is 5~90% by weight percentage, flavonoid is 10~95% for 200410018677.4 " medical composition and its uses with alpha-glucoside inhibiting activity ", the drug regimen that discloses; Application number: 01113191.8 " Chinese medicine extract, Preparation Method And The Use with alpha-glucosidase inhibitor activity " discloses the preparation method of total alkaloids; Application number: 03142068.0 " Folium Mori effective component extracts and preparation method " contains nojirimycin 1.0~3.0%, γ-An Jidingsuan 0.8~1.5% in the disclosed extract; Application number: 02125869.4 " a kind of alpha-glucosidase inhibitor and its purposes " discloses a kind of efficient, cheap and alpha-glucosidase inhibitor of being easy to obtain.Above patent does not relate to extracts polysaccharides of Folium Mori and alkaloid active component preparation of compositions method from Folium Mori, do not relate to the report that the combination of polysaccharides of Folium Mori and Folium Mori alkaloid active component is used for the blood sugar lowering purposes.
Summary of the invention
The object of the present invention is to provide a kind of blood-sugar-reducing effective components compositions of utilizing the leaf extraction of moraceae plants mulberry: polysaccharides of Folium Mori and Folium Mori alkaloid, solid-state light brown or the buff powder of being, wherein the polysaccharides of Folium Mori molecular weight is greater than 1,000,000 dalton, percentage by weight is 20~80%, 1-deoxynojirimycin content is greater than 50% in the Folium Mori alkaloid, and percentage by weight is 80~20%.
Composition of white mulberry leaf blood-sugar-reducing effective components provided by the invention is a raw material with the leaf of moraceae plants mulberry, prepares by the step of following order:
(1) Folium Mori are removed impurity, pulverize after the cold drying and weigh, and get Mulberry Leaf;
(2) Mulberry Leaf organic solvent extraction, weeding of grease dissolubility part is filtered then, gets slag and removes liquid;
(3) filtering residue is flung to organic solvent, gets the Mulberry granulated slag;
(4) Mulberry granulated slag hot water extraction filters, and it is 40%~80% that filtrate adding ethanol makes concentration, filters then, gets supernatant and precipitation.
(5) the supernatant resin cation exchange of gained in the step (4), impurity is removed in the exchange of reuse resin anion (R.A.).
(6) the middle cationic resin of step (5) the ammonia spirit eluting of 0.4M~0.7M, collect the ammonia eluent of cationic resin, concentrate, resin anion (R.A.) on the concentrated solution, the water eluant solution is collected resin anion (R.A.) water elution liquid, concentrate, drying promptly gets Folium Mori alkaloid, and wherein main alkaloid composition 1-deoxynojirimycin (1-Deoxynojirimycin) content is no less than 50%.
(7) the precipitation water dissolution of gained in the step (4) adds trichloroacetic acid again and removes Deproteinization, and is centrifugal;
(8) supernatant is transferred pH=7 with NaOH solution in the step (7), and is centrifugal;
(9) supernatant dialysis in the step (8), adding ethanol then, to make solution concentration be 40%~80%, precipitation is filtered;
(10) gained precipitation in the step (9), drying promptly gets polysaccharides of Folium Mori, and polysaccharide molecular weight is greater than 1,000,000.
(11) combining step (6) gained alkaloid and step (10) gained polysaccharides of Folium Mori promptly get composition of white mulberry leaf blood-sugar-reducing effective components;
Used organic solvent is petroleum ether, ethyl acetate, methanol, dehydrated alcohol in the step of the present invention (2); Used cation exchange resin is strongly acidic styrene type cation exchange resin 001 * 8, macropore weak acid acrylic acid type cation exchange resin D152, weak acid 1D1 cation exchange resin 724, cation exchange resin 732 in the step (5); Used anion exchange resin is weak base 330 anion exchange resin 701, strong-basicity styrene series anion exchange resin 201 * 4.
In the preparation method of the present invention, all when relating to drying, can adopt oven drying, vacuum drying, lyophilization and/or spray drying.In the preparation method of the present invention, all when relating to concentration technology, can adopt concentrating under reduced pressure, normal pressure to concentrate.All when relating to precipitation or precipitate and fluid separation applications in the inventive method, can adopt centrifugalize, membrance separation and/or normal pressure or filtration under diminished pressure.Pulverizing can be adopted independent pulverizing and/or mix and pulverize.All relating to when extracting, can be adopted supersound extraction, heating and refluxing extraction or lixiviate among the present invention.
Solid-state light brown or the buff powder of being of the present invention.Can be developed into medicine or functional food that series has hypoglycemic activity, technical process is simple, and cost is low, and drug effect is remarkable, instant and can making full use of the natural resources.
The specific embodiment
The present invention is further illustrated below in conjunction with embodiment and the test of pesticide effectiveness.
Folium Mori blood fat reducing active component preparation of compositions example is as follows:
Example 1
Get the leaf 2kg of moraceae plants mulberry, remove impurity, pulverize after the cold drying, add the Petroleum ether extraction of 3 times of volumes, the weeding of grease soluble components filters then, gets slag and removes liquid.Filtering residue is flung to organic solvent, gets the Mulberry granulated slag.The Mulberry granulated slag adds 5 times of volume hot water extraction, filters, and removes slag and gets liquid.Adding ethanol in the filtrate, to make concentration be 40%, and precipitation is filtered, supernatant and precipitation.Supernatant with the ammonia eluting of 0.4M, is collected eluent earlier with 001 * 8 (strongly acidic styrene type cation exchange resin) purification, concentrates reuse 701 (weak base 330 anion exchange resin) purification, water eluant solution.Get Folium Mori alkaloid behind the eluent concentrate drying, wherein 1-deoxynojirimycin (1-Deoxynojirimycin) content is no less than 50%.Precipitation adds trichloroacetic acid after with water dissolution and removes albumen, and is centrifugal.Get supernatant and transfer pH=7 with NaOH solution, centrifugal again.Get above-mentioned supernatant dialysis, it is 40% that adding ethanol in dialysis back makes concentration, sedimentation and filtration.Promptly get light yellow polysaccharides of Folium Mori powder after the precipitation drying.Merge Folium Mori alkaloid and polysaccharides of Folium Mori and promptly get composition of white mulberry leaf blood-sugar-reducing effective components
Example 2
Get the leaf 2kg of moraceae plants mulberry, remove impurity, pulverize after the cold drying, add the ethyl acetate extraction of 5 times of volumes, the weeding of grease soluble components filters then, gets slag and removes liquid.Filtering residue is flung to organic solvent, gets the Mulberry granulated slag.The Mulberry granulated slag adds 6 times of volume hot water extraction, filters, and removes slag and gets liquid.Adding ethanol in the filtrate, to make concentration be 50%, and precipitation is filtered, supernatant and precipitation.Supernatant, is collected eluent and is concentrated reuse 201 * 4 (strong-basicity styrene series anion exchange resin) purification, water eluant solution with the ammonia eluting of 0.5M earlier with D152 (macropore weak acid acrylic acid type cation exchange resin) purification.Get Folium Mori alkaloid behind the eluent concentrate drying, wherein 1-deoxynojirimycin (1-Deoxynojirimycin) content is no less than 50%.Precipitation adds trichloroacetic acid after with water dissolution and removes albumen, and is centrifugal.Get supernatant and transfer pH=7 with NaOH solution, centrifugal again.Get above-mentioned supernatant dialysis, it is 80% that adding ethanol in dialysis back makes concentration, precipitates, filters.Promptly get light yellow polysaccharides of Folium Mori powder after the precipitation drying.Merge Folium Mori alkaloid and polysaccharides of Folium Mori and promptly get composition of white mulberry leaf blood-sugar-reducing effective components.
Example 3
Get the leaf 2kg of moraceae plants mulberry, remove impurity, pulverize after the cold drying, add the methanol extraction of 5 times of volumes, the weeding of grease soluble components filters then, gets slag and removes liquid.Filtering residue is flung to organic solvent, gets the Mulberry granulated slag.The Mulberry granulated slag adds 8 times of volume hot water extraction, filters, and removes slag and gets liquid.Adding ethanol in the filtrate, to make concentration be 60%, and precipitation is filtered, supernatant and precipitation.Supernatant, is collected eluent and is concentrated reuse 201 * 4 (strong-basicity styrene series anion exchange resin) purification, water eluant solution with the ammonia eluting of 0.6M earlier with 724 (weak acid 1D1 cation exchange resin) purification.Get Folium Mori alkaloid behind the eluent concentrate drying, wherein 1-deoxynojirimycin (1-Deoxynojirimycin) content is no less than 50%.Precipitation adds trichloroacetic acid after with water dissolution and removes albumen, and is centrifugal.Get supernatant and transfer pH=7 with NaOH solution, centrifugal again.Get above-mentioned supernatant dialysis, it is 70% that adding ethanol in dialysis back makes concentration, and precipitation is filtered.Promptly get light yellow polysaccharides of Folium Mori powder after the precipitation drying.Merge Folium Mori alkaloid and polysaccharides of Folium Mori and promptly get composition of white mulberry leaf blood-sugar-reducing effective components.
Example 4
Get the leaf 2kg of moraceae plants mulberry, remove impurity, pulverize after the cold drying, add the dehydrated alcohol extraction of 5 times of volumes, the weeding of grease soluble components filters then, gets slag and removes liquid.Filtering residue is flung to organic solvent, gets the Mulberry granulated slag.The Mulberry granulated slag adds 7 times of volume hot water extraction, filters, and removes slag and gets liquid.Adding ethanol in the filtrate, to make concentration be 70%, and precipitation is filtered, supernatant and precipitation.Supernatant, is collected eluent and is concentrated reuse 701 (weak base 330 anion exchange resin) purification, water eluant solution with the ammonia eluting of 0.7M earlier with 001 * 8 (strongly acidic styrene type cation exchange resin) purification.Get Folium Mori alkaloid behind the eluent concentrate drying, wherein 1-deoxynojirimycin (1-Deoxynojirimycin) content is no less than 50%.Precipitation adds trichloroacetic acid after with water dissolution and removes albumen, and is centrifugal.Get supernatant and transfer pH=7 with NaOH solution, centrifugal again.Get above-mentioned supernatant dialysis, it is 60% that adding ethanol in dialysis back makes solution concentration, and precipitation is filtered.Promptly get light yellow polysaccharides of Folium Mori powder after the precipitation drying.Merge Folium Mori alkaloid and polysaccharides of Folium Mori and promptly get composition of white mulberry leaf blood-sugar-reducing effective components.
Example 5
Get the leaf 2kg of moraceae plants mulberry, remove impurity, pulverize after the cold drying, add the dehydrated alcohol extraction of 4 times of volumes, the weeding of grease soluble components filters then, gets slag and removes liquid.Filtering residue is flung to organic solvent, gets the Mulberry granulated slag.The Mulberry granulated slag adds 10 times of volume hot water extraction, filters, and removes slag and gets liquid.Adding ethanol in the filtrate, to make concentration be 80%, and precipitation is filtered, supernatant and precipitation.Supernatant, is collected eluent and is concentrated reuse 201 * 4 (strong-basicity styrene series anion exchange resin) purification, water eluant solution with the ammonia eluting of 0.8M earlier with 724 (weak acid 1D1 cation exchange resin) purification.Get Folium Mori alkaloid behind the eluent concentrate drying, wherein 1-deoxynojirimycin (1-Deoxynojirimycin) content is no less than 50%.Precipitation adds trichloroacetic acid after with water dissolution and removes albumen, and is centrifugal.Get supernatant and transfer pH=7 with NaOH solution, centrifugal again.Get above-mentioned supernatant dialysis, it is 50% that adding ethanol in dialysis back makes solution concentration, and precipitation is filtered.Promptly get light yellow polysaccharides of Folium Mori powder after the precipitation drying.Merge Folium Mori alkaloid and polysaccharides of Folium Mori and promptly get composition of white mulberry leaf blood-sugar-reducing effective components.
The second portion test of pesticide effectiveness
Composition of white mulberry leaf blood-sugar-reducing effective components provided by the invention has good hypoglycemic activity.Prove that through animal experiment the test of pesticide effectiveness is reported as follows:
1, sample: composition of white mulberry leaf blood-sugar-reducing effective components.
2, experimental animal: Kunming kind white mice: the male and female dual-purpose, body weight (22 ± 2) g is provided by Jiangsu University's animal center.
3, test method:
(1) preparation of diabetes model: healthy mice, behind the 24h that goes on a hunger strike, the freshly prepared alloxan 200mg/kg of lumbar injection gets tail blood and surveys blood glucose after 3 days, chooses blood glucose value and be diabetic mice more than 14.9mmol/L.
(2) mice of formation diabetes model is one group by 10, and the composition of white mulberry leaf blood-sugar-reducing effective components of lumbar injection example 1~example 5 was surveyed blood glucose in the 8th day respectively.
(3) blood-sugar level measuring: use ONE TOUCH TMBasic TMThe steady prompt basis of Plus extraordinarily type blood sugar monitoring instrument is measured.
4, test result:
The composition of white mulberry leaf blood-sugar-reducing effective components blood sugar lowering result of the test that adopts different process to obtain sees Table 1.
The hypoglycemic effect of the composition of white mulberry leaf blood-sugar-reducing effective components of table 1 different instances
Figure C200610038713D00081
Figure C200610038713D00091
Compare with the diabetes matched group *P<0.05, *P<0.01;
Self compare #P<0.05, ##P<0.01 before and after the administration with after the administration
Result of the test shows: several composition of white mulberry leaf blood-sugar-reducing effective components all have the obvious functions of blood sugar effect.
Figure C200610038713D00092
A: blood glucose value before the administration, b: blood glucose value after the administration.

Claims (2)

1, a kind of composition of white mulberry leaf blood-sugar-reducing effective components, it is characterized in that this active component compositions is polysaccharides of Folium Mori and Folium Mori alkaloid, solid-state light brown or the buff powder of being, wherein the polysaccharides of Folium Mori molecular weight is greater than 1,000,000 dalton, percentage by weight is 20~80%, 1-deoxynojirimycin content is greater than 50% in the Folium Mori alkaloid, and percentage by weight is 80~20%; This active component compositions adopts following method to make: the leaf with the moraceae plants mulberry is a raw material, prepares by the step of following order:
1. Folium Mori are removed impurity, pulverize after the cold drying and weigh, and get Mulberry Leaf;
2. Mulberry Leaf organic solvent extraction, weeding of grease dissolubility part is filtered then, gets slag and removes liquid;
3. filtering residue is flung to organic solvent, gets the Folium Mori granulated slag;
4. Folium Mori granulated slag hot water extraction filters, and it is 40%~80% that filtrate adding ethanol makes concentration, filters then, gets supernatant and precipitation;
5. with the supernatant resin cation exchange of gained, impurity is removed in the exchange of reuse resin anion (R.A.);
6. with the ammonia spirit eluting of cationic resin with 0.4M~0.8M, collect the ammonia eluent of cationic resin, concentrate, resin anion (R.A.) on the concentrated solution, the water eluant solution is collected resin anion (R.A.) water elution liquid, concentrate, drying promptly gets Folium Mori alkaloid, and wherein main alkaloid composition 1-deoxynojirimycin 1-Deoxynojirimycin content is no less than 50%;
7. with the precipitation water dissolution of gained, add trichloroacetic acid again and remove Deproteinization, centrifugal, get supernatant;
8. the supernatant that 7. step is obtained is transferred pH=7 with NaOH solution, and is centrifugal;
9. the dialysis of the supernatant that 8. step obtained, adding ethanol then, to make solution concentration be 40%~80%, precipitation is filtered;
10. with the 9. middle gained precipitation of step, drying promptly gets polysaccharides of Folium Mori;
Figure C200610038713C00021
Combining step is 10. gained polysaccharides of Folium Mori of gained alkaloid and step 6.;
Above-mentioned used organic solvent is petroleum ether, ethyl acetate, methanol or dehydrated alcohol; Used cation exchange resin is strongly acidic styrene type cation exchange resin 001 * 8, macropore weak acid acrylic acid type cation exchange resin D152, weak acid 1D1 cation exchange resin 724 or cation exchange resin 732; Used anion exchange resin is weak base 330 anion exchange resin 701 or strong-basicity styrene series anion exchange resin 201 * 4.
2. the preparation method of above-mentioned composition of white mulberry leaf blood-sugar-reducing effective components is characterized in that: adopt oven drying, vacuum drying, lyophilization or spray drying; Adopt concentrating under reduced pressure or normal pressure concentration technology; Adopt centrifugalize, membrance separation, normal pressure or filtration under diminished pressure precipitates or precipitate and fluid separation applications; Adopt and pulverize separately or the mixing pulverizing; Adopt supersound extraction, heating and refluxing extraction or lixiviate.
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