CN116803399A

CN116803399A - Ginseng total protein extract and preparation method and application thereof

Info

Publication number: CN116803399A
Application number: CN202310967062.9A
Authority: CN
Inventors: 连文慧; 李婕; 庞博; 许宁; 幸书杨; 赵贵佳; 孙天霞; 冯琳
Original assignee: Changchun University of Chinese Medicine
Current assignee: Changchun University of Chinese Medicine
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-09-26
Also published as: CN114984074A; CN114984074B

Abstract

The application relates to a ginseng total protein extract, a preparation method and application thereof, wherein the ginseng total protein extract is freeze-dried powder, and 8 proteins with the highest content in the ginseng total protein extract are as follows: ribonuclease-like major storage proteins, flavin-like oxidoreductase FOX5, beta-amylase-like, latex-like proteins, glyceraldehyde 3-phosphate dehydrogenase, methionine synthase, ferredoxin-dependent glutamate synthase 1, prosequence protease 2. The ginseng total protein extract of the application can be used as a medicine active ingredient for preventing, relieving and treating parkinsonism.

Description

Ginseng total protein extract and preparation method and application thereof

The application discloses a preparation method of total protein of ginseng and a divisional application of the total protein of ginseng for improving parkinsonism aiming at the application number 2022107302632 and the application date 2022, 6 and 24.

Technical Field

The application particularly relates to a ginseng total protein extract and a preparation method and application thereof.

Background

Ginseng radix is root and rhizome of Panax ginseng (Panax ginseng C.A. mey) belonging to Araliaceae, is a traditional Chinese medicine widely used in China, and has effects of protecting nervous system, cardiovascular system and endocrine system. The active ingredients of ginseng are complex and mainly comprise saponin, polysaccharide, volatile oil, sterol, organic acid, protein and polypeptide, alkaloid and the like. At present, the research on ginseng at home and abroad is mainly focused on ginsenoside, and the related research on ginseng protein and polypeptide is less. According to the nature of Ginseng Protein (GP), the common extraction methods of GP include a traditional extraction method based on Tris-HCl solution and PBS solution and an organic reagent precipitation method. The organic reagent precipitation method comprises Trizol extraction method, membrane filtration method, precipitation method, rapid solvent extraction method, etc. The ginseng proteins reported at present are divided into: rnase-like proteins, ribonucleases, enzymes associated with saponin synthesis, chitin-like proteins, xylanases, etc., which are involved in ginseng antifungal, antiviral, saponin synthesis, cell proliferation and transcriptional activity.

With the intensive research of GP, the pharmacological action, the anti-oxidative stress and aging actions, the immunity improving action, the hypoxia tolerance and fatigue resistance actions, the blood fat regulating action, the radiation resistance action, the antifungal action, the pain relieving action, the sleep quality improving action, the memory improving action, the learning ability enhancing action and the like of GP are discovered.

In the existing GP extraction process, tris-HCl solution, PBS solution, organic reagent buffer salt solution and the like are required, and the extracting solution inevitably contains a large amount of small molecular compounds, so that toxic and side effects on human bodies are caused, and complicated solvent removal steps and purification steps are required on the premise of ensuring the protein activity, so that the method is not suitable for large-scale industrial production, and the total protein of ginseng is high in preparation cost, and further higher in medication cost. In addition, ginseng total protein is not a single compound, and the effective component is often a large group of effective components. The complex extraction process has great influence on the structure of the active ingredient group of the ginseng total protein, damages the activity of each protein, changes the composition ratio and has obvious difference on the treatment effect of the same disease.

Parkinson's Disease (PD) is a progressive neurodegenerative disease that can cause motor and non-motor symptoms. Motor symptoms include motor and physical tasks: tremor, stiffness, slowness and imbalance. Non-motor symptoms affect many organ systems, such as the antrum and genitourinary system. In general, patients may not voluntarily manifest themselves as non-motor symptoms, as these symptoms make them embarrassing, leading to more time-consuming treatment focused on motor symptoms, or they may not know that these symptoms may be associated with parkinson's disease. People diagnosed with parkinson's disease typically develop non-motor symptoms a few years before motor symptoms begin, but typically they do not actively mention these symptoms unless specifically asked. These precursor non-motor features include rapid eye movement sleep disturbance, loss of smell, constipation, urinary dysfunction, orthostatic hypotension, excessive daytime sleepiness and depression. These symptoms are not parkinsonian-specific, but when they occur simultaneously, the risk of subsequently diagnosing parkinsonian disease is greater. Rapid eye movement sleep disorders are closely related to an increased risk of subsequent diagnosis of parkinson's disease. Over 90% of individuals with idiopathic rapid eye movement sleep disorders eventually develop synuclein-related neurodegenerative diseases, typically parkinson's disease or related diseases (dementia with lewy bodies, multiple system atrophy), with initial estimates of about 30% to 50% of parkinson's patients with rapid eye movement sleep disorders. Once the medical history and physical examination characteristics of parkinson's disease are confirmed, the clinician excludes characteristics that might suggest atypical parkinson's disease ("red-marked symptoms") and evaluates the patient's response to levodopa (or potentially other dopaminergic drugs) to confirm parkinson's disease. The gradual onset of resting tremor, a slow or generalized (not joint specific) stiffness occurs. Only about 20% of parkinson's disease patients have no resting tremors.

Pharmacological treatment of parkinsonism motor sympathetic nerves is based primarily on dopamine. Levodopa formulations, dopamine agonists and monoamine oxidase-B (MAO-B) inhibitors are useful initial therapeutic approaches. Anticholinergic agents (e.g., trihydroxyphenyl) are useful in young individuals with significant tremors, but care is required because adverse events, particularly cognition-related adverse events, may occur. Effective motor intervention parkinson's disease involves gait and balance training, and different motor methods may be beneficial for different motor aspects of parkinson's disease. The reference to interdisciplinary therapeutic consultation is an important component of parkinsonism quality care. Currently, no drug therapy can prevent or delay the progression of parkinson's disease. Recent second-stage randomized clinical trials of high-intensity treadmill-exercised individuals with new parkinsonism find that the deterioration of motor function is significantly lower in the high-intensity exercise group than in the general care group, requiring further investigation of whether exercise alters the progression of parkinsonism. Development of drugs capable of preventing, alleviating and treating parkinson's disease has been the focus and difficulty of research.

Disclosure of Invention

The application aims to provide a preparation method of ginseng total protein suitable for industrial mass production, and the ginseng total protein prepared by the preparation method has no toxic or side effect on human bodies and has positive effects on prevention, alleviation and treatment of the kinson disease.

In order to achieve the above purpose, the application adopts the following technical scheme:

a method for preparing ginseng total protein, which comprises the following steps:

(1) Mixing the ginseng dry powder with water with the volume of 8-12 times of that of the ginseng dry powder, regulating the pH value of the system to 7.0-9.0 by utilizing NaOH, leaching for 4-12 hours at the temperature of 4 ℃, and separating to obtain supernatant and residues;

(2) Replacing the ginseng dry powder in the step (1) with the residue in the step (1), and repeating the step (1) for 1-3 times;

(3) Combining the supernatant fluid in the step (1) and the supernatant fluid in the step (2), regulating the pH value to 3.0-3.5 by utilizing HCl, centrifuging at a low temperature at 4 ℃ overnight, taking precipitate, adding water and regulating the pH value to 7.0-9.0, re-dissolving the precipitate, intercepting low-temperature ultrafiltration by adopting an ultrafiltration tube, taking the supernatant fluid, and freeze-drying to obtain the ginseng total protein.

Preferably, the pH value in the step (1) is adjusted to 7.0-8.0.

Preferably, the leaching time in step (1) is controlled to be 6 to 10 hours, for example 6 hours, 7 hours, 8 hours, 9 hours, 10 hours.

Preferably, in step (3), the supernatants in step (1) and step (2) are combined and the pH is adjusted to 3.5-4.5.

Preferably, water is added in step (3) and the pH is adjusted to 7.0 to 8.0.

Preferably, the molecular weight cut-off of the ultrafiltration tube in step (3) is in the range of 2000 to 4000Da, for example 2000Da, 2500Da, 3000Da, 3500Da, 4000Da.

According to a preferred embodiment, the preparation method comprises the following steps:

mixing ginseng dry powder and distilled water with pH of about 7.0 and ten times of volume of the ginseng dry powder, regulating the final pH value to 6.5-7.5, centrifuging at 5500-6500 rpm for 25-35 min to obtain supernatant which is an extracting solution, repeating the steps, mixing the extracting solutions for two times, regulating the pH of the extracting solution to below 4.0, precipitating at 4 ℃ overnight, centrifuging to separate supernatant and precipitate, adding a proper amount of distilled water again and regulating the pH value to 6.5-7.5, re-dissolving the precipitate, intercepting ultrafiltration by adopting an ultrafiltration tube with the molecular weight of 2800-3200, centrifuging at 4500-5500 r/min for 25-35 min, collecting supernatant, and freeze-drying the supernatant to obtain the ginseng total protein.

The application also provides the ginseng total protein prepared by the preparation method.

Specifically, the 8 proteins with the highest content in the total proteins of the ginseng are as follows: ribonuclease-like major storage proteins, flavin-like oxidoreductase FOX5, beta-amylase-like, latex-like proteins, glyceraldehyde 3-phosphate dehydrogenase, methionine synthase, ferredoxin-dependent glutamate synthase 1, prosequence protease 2.

The application also provides application of the ginseng total protein as an active ingredient in preparing medicines for preventing, relieving and treating parkinsonism.

The application also provides a medicament for preventing, relieving and treating parkinsonism, which comprises the ginseng total protein.

By adopting the technical scheme, compared with the prior art, the application has the following advantages:

the ginseng total protein obtained by the preparation method can obviously improve the behavioral disorder of a chronic PD model mouse, can obviously improve the distribution of brain hippocampus somatic cells and striatal inter-body area of the mouse, reduces alpha-Syn aggregation, increases TH expression, reduces inflammatory infiltration of intestinal tissues and increases goblet cells of the intestinal tissues, has no toxic or side effect, and can be used as an active ingredient of a medicament for preventing, relieving and treating the Parkinson disease. The preparation method of the ginseng total protein has simple process and no toxicity, and is suitable for large-scale industrial production.

Drawings

FIG. 1 is a BSA standard curve;

FIG. 2 is an SDS-PAGE electrophoresis of purified proteins;

FIG. 3 shows the effect of total protein of each dose group on normal mouse body weight;

FIG. 4 shows the effect of total protein of each dose group on the hippocampus of normal mice;

FIG. 5 shows the effect of total protein of each dose group on the striatum of normal mice;

FIG. 6 shows the effect of total protein of ginseng in each dose group on expression of alpha-Syn and TH in normal mice;

FIG. 7 shows the IOD values of total protein of ginseng versus alpha-Syn of normal mice for each dose group;

FIG. 8 shows the IOD values of total protein of ginseng versus TH of normal mice for each dose group;

FIG. 9 shows the effect of each dose of total protein of ginseng on chronic PD model mouse suspension cord experiments;

FIG. 10 shows the effect of total protein of each dose group on hippocampus of chronic PD model mice;

FIG. 11 shows the effect of total protein of each dose group on striatum of chronic PD model mice;

FIG. 12 shows the effect of total protein of each dose group on alpha-Syn and TH expression in chronic PD model mice;

FIG. 13 shows the IOD values of total protein of ginseng versus alpha-Syn of chronic PD model mice for each dose group;

figure 14 shows IOD values of total protein of ginseng versus TH in chronic PD model mice for each dose group.

Detailed Description

The technical scheme of the present application will be further described with reference to specific embodiments, but the present application is not limited to the following examples. The implementation conditions employed in the examples may be further adjusted according to specific requirements, and the implementation conditions not specified are generally those in routine experiments.

In the present application, all of the water used is distilled water.

In the application, the dry ginseng powder is powder of dried roots of Panax ginseng C.A. Mey of Araliaceae, and the particle size is smaller than 24 meshes.

In the following examples and comparative examples, the instruments, raw materials and reagents used were all commercially available unless otherwise specified.

All data were plotted using GraphPad Prism 5.0 software; SPSS20.0 statistical software performs statistical analysis treatment, data are expressed by mean+ -SD, the average comparison among multiple groups adopts One way-ANOVA method, and P is less than 0.05, and the statistical difference is present.

Ginseng (5 years sun-dried ginseng) was purchased from Jingyu county, jilin province, and identified as the dry root of Panax ginseng C.A. mey of Araliaceae through professor Jiang Dacheng of the university of vinca traditional Chinese medicine identification.

Example 1

Taking 10g of ginseng dry powder, wherein the solvent is distilled water, the feed-liquid ratio is 1:10, regulating the pH value to 7.0 by using HCl and NaOH, adopting cold soaking extraction at 4 ℃, centrifuging at 6000rpm for 30min, obtaining supernatant which is an extracting solution, measuring the protein concentration by using Bradford after extraction, preparing SDS polyacrylamide gel electrophoresis, monitoring the extracting solution by using electrophoresis, freeze-drying the extracting solution, weighing and calculating the yield.

Drawing a standard curve: the standard was plotted using the Bradford kit with the O.D. value of the buffer without BSA as a blank and the protein concentration (unit: mg/mL) as the ordinate, and the standard equation was y=1.183x+0.292, R as shown in FIG. 1 ² 0.9977.

In this example, the extraction yield was 29.4% and the protein yield was 3.2%.

Comparative example 1

Substantially the same as in example 1, except that cold soaking at 4℃was used for extraction and then the residue was boiled for heat extraction.

In this comparative example, the extraction yield was 42.3%, the protein yield was 3.6%, and the extraction yield was significantly improved as compared with example 1, but the extraction yield was substantially all impurities, and the protein yield in the residue was only 0.4%.

Example 2

Taking 1g of ginseng dry powder, adding distilled water with pH value being regulated to about 7.0 in an amount of approximately ten times of the volume, reducing the pH value of the solution after adding the ginseng powder, regulating the pH value to 7.0, carrying out cold extraction at 4 ℃ for 8 hours at 6000rpm for 30min, repeating the steps for two times, extracting three times, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as in example 1) to calculate the protein content and the weight of the freeze-dried powder.

In this example, the protein content was 24.1mg and the lyophilized powder weight was 448.2mg.

Example 3

Taking 1g of ginseng dry powder, adding distilled water with pH value being regulated to about 8.0, reducing the pH value of the solution after adding ginseng powder, regulating the pH value to 8.0, carrying out cold extraction at 4 ℃ for 8h and at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for two times and three times for the separated residues, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as that of the example 1), and calculating the protein content and the weight of freeze-dried powder.

In this example, the protein content was 23.9mg and the lyophilized powder weight was 469.1mg.

Comparative example 2

Taking 1g of ginseng dry powder, adding distilled water with pH value being regulated to about 6.0 in an amount of approximately ten times of the volume, reducing the pH value of the solution after adding the ginseng powder, regulating the pH value to 6.0, carrying out cold extraction at 4 ℃ for 8 hours at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for two times and three times for the residue obtained by separation, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as in example 1) to calculate the protein content and the weight of freeze-dried powder.

In this comparative example, the protein content was 18.7mg and the weight of the lyophilized powder was 448.2mg.

Comparative example 3

Taking 1g of ginseng dry powder, adding distilled water with pH value being regulated to about 9.0, reducing the pH value of the solution after adding ginseng powder, regulating the pH value to 9.0, carrying out cold extraction at 4 ℃ for 8h and at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for two times and three times for the residue obtained by separation, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as that of the example 1), and calculating the protein content and the weight of freeze-dried powder.

In this comparative example, the protein content was 21.5mg and the weight of the lyophilized powder was 524.1mg.

Example 4

Taking 1g of ginseng dry powder, adding distilled water with the pH value regulated to be about 7.0, which is close to twelve times of the volume, reducing the pH value of the solution after adding the ginseng powder, regulating the pH value to be 7.0, carrying out cold extraction at 4 ℃ for 12h and at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps of extracting the residues obtained by separation twice, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as that of the embodiment 1), wherein the protein content is calculated to be 25.46mg.

Example 5

Taking 1g of ginseng dry powder, adding distilled water with the pH value regulated to be about 7.0, which is approximately eight times of the volume, reducing the pH value of the solution after adding the ginseng powder, regulating the pH value to be 7.0, carrying out cold extraction at 4 ℃ for 8 hours at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for two times, extracting three times altogether, combining the extracting solutions, preparing a protein sample, and measuring the protein concentration (the testing method is the same as that of the example 1), wherein the protein content is 26.89mg.

Example 6

Taking 1g of ginseng dry powder, adding distilled water with pH value being regulated to about 7.0 in an amount of approximately ten times of the volume, reducing the pH value of the solution after adding the ginseng powder, regulating the pH value to 7.0, carrying out cold extraction at 4 ℃ for 12h at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for two times and three times for the residue obtained by separation, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as that of the embodiment 1), wherein the protein content is 28.96mg.

Example 7

Taking 1g of ginseng dry powder, adding distilled water with the pH value regulated to be about 7.0, which is close to twelve times of the volume, reducing the pH value of the solution after adding the ginseng powder, regulating the pH value to be 7.0, carrying out cold extraction at 4 ℃ for 4h at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for two times, extracting three times altogether, combining the extracting solutions, preparing a protein sample, and measuring the protein concentration (the testing method is the same as that of the embodiment 1), wherein the protein content is 29.18mg.

Example 8

Taking 1g of ginseng dry powder, adding distilled water with pH value being regulated to about 7.0 in an amount of approximately ten times of the volume, reducing the pH value of the solution after adding the ginseng powder, regulating the pH value to 7.0, carrying out cold extraction at 4 ℃ for 8 hours at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for three times on the separated residues, extracting four times altogether, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as that of the embodiment 1), wherein the protein content is calculated to be 26.89mg.

Example 9

Taking 1g of ginseng dry powder, adding distilled water with the pH value regulated to be about 7.0, which is close to twelve times of volume, adding ginseng powder, reducing the pH value of the solution, regulating the pH value to be 7.0, carrying out cold extraction at 4 ℃ for 8 hours at 6000rpm for 30min, obtaining supernatant which is an extracting solution, repeating the steps for three times on the separated residues, extracting four times altogether, combining the extracting solutions to prepare a protein sample, and measuring the protein concentration (the testing method is the same as that of the embodiment 1), wherein the protein content is 28.44mg.

Example 10

Taking 10g of ginseng dry powder, adding distilled water with pH of 7.0 regulated according to ten times of volume of the ginseng dry powder, regulating the final pH value to 7.0, centrifuging at 6000rpm for 30min to obtain supernatant which is an extracting solution, repeating the steps, mixing the extracting solutions twice, regulating the pH of the extracting solution to below 4.0, precipitating at 4 ℃ overnight, centrifuging to separate supernatant and precipitate, adding a proper amount of distilled water again, regulating the pH value to 7.0, re-dissolving the precipitate, intercepting ultrafiltration by a 3000Da molecular weight ultrafiltration tube, centrifuging at 5000r/min for 30min by the ultrafiltration tube, collecting the supernatant, freeze-drying, weighing, testing the purity, and obtaining the protein with the protein extraction rate of 2.5% and 80.80%.

Comparative example 4

Taking 10g of ginseng dry powder, adding distilled water with pH of about 7.0 according to ten times of the volume of the ginseng dry powder, adjusting the final pH value to 7.0, separating the obtained supernatant to obtain an extracting solution, repeating the steps, mixing the extracting solutions obtained by separation, adjusting the pH of the extracting solution to below 4.0, precipitating at 4 ℃ overnight, centrifugally separating the supernatant and the precipitate, adding a proper amount of distilled water again to adjust the pH value to 7.0, re-dissolving, dialyzing with a dialysis bag with a molecular weight of 3000Da, dialyzing for 24 hours, collecting an inner solution, detecting, freeze-drying, weighing, testing the purity, and obtaining the protein with the protein extraction rate of 1.3% and 67.9%.

Comparative example 5

Taking 10g of ginseng dry powder, adding distilled water with pH of about 7.0 according to ten times of the volume of the ginseng dry powder, adjusting the final pH value to 7, separating the obtained supernatant to obtain an extracting solution, repeating the steps, combining the extracting solutions twice, adjusting the pH of the extracting solution to below 4.0, precipitating at 4 ℃ overnight, centrifugally separating the supernatant and the precipitate, adding a proper amount of distilled water again to adjust the pH value to 7.0, re-dissolving, detecting, wherein the protein extraction rate is 3.9%, and the protein purity is 53.3%.

Example 11

Performing SDS-PAGE electrophoresis on the purified ginseng protein sample in the embodiment 10, analyzing a protein mixture in the adhesive tape sample by combining intra-gel enzymolysis and high-resolution biological mass spectrometry, cutting gel for 9 proteins with the highest content, respectively sequencing, and then carrying out protein sequence identification. The SDS-PAGE patterns of the purified proteins are shown in FIG. 2, and the molecular weights and the identification results of the 9 proteins are shown in Table 1 (arranged according to the content from high to low).

TABLE 1

Table 1 shows that band 8 and band 7 are the same protein, and the 8 proteins with the highest content in the total proteins of ginseng are: ribonuclease-like major storage proteins, flavin-like oxidoreductase FOX5, beta-amylase-like, latex-like proteins, glyceraldehyde 3-phosphate dehydrogenase, methionine synthase, ferredoxin-dependent glutamate synthase 1, prosequence protease 2.

Example 12

Pathological influence of Ginseng radix total protein on brain tissue of normal C57BL/6 mice

SPF-class male C57BL/6 mice, 40, with a body mass of 18+ -2 g, provided by vinca Yiss laboratory animal technology Co., ltd., license number: SCXK 2020-0002. Before the formal experiment, the mice are adaptively fed for two weeks, and are placed in an experimental animal room, and the room temperature is kept between 22 ℃ and 25 ℃ for free ingestion and drinking.

40 mice were randomly divided into blank groups, low, medium and high dose groups of total protein of ginseng, 10 each. The total protein of ginseng is the purified total protein of the ginseng in the embodiment 9, 3-9g of ginseng is taken every day by each person according to the Chinese pharmacopoeia of 2020 edition, 3g, 6g and 9g are respectively used as low, medium and high dosage groups, and the administration concentrations of the low, medium and high dosage groups after the total protein of ginseng is simultaneously combined with the content of the total protein of ginseng by body surface area conversion are respectively 16mg/kg, 32mg/kg and 48mg/kg of distilled water as solvent. Feeding is continued for 4 weeks, and administration is daily. The blank group was given an equal amount of distilled water by the same administration. The mice were observed for their morphological characteristics during feeding and their body weights were recorded.

The mice are monitored in the dosing period, and the mice are found to have normal physical signs and Mao Seshun to be smooth and bright. The body weight data of the mice recorded after the start of the administration were plotted together at weekly nodes. As shown in FIG. 3, compared with the blank control group, the growth trend of the mice in the low, medium and high dose groups of ginseng total protein is basically consistent, no obvious difference exists, the weight of each group at the same time point is statistically analyzed, and the difference has no statistical significance. It shows that the total protein of ginseng does not cause the change of vital signs such as weight of mice.

After the end of the dosing period, the mice were sacrificed by cervical dislocation. Dissecting brain tissue, placing in fixing solution, gradient dehydrating, paraffin embedding, slicing, dyeing, dehydrating, sealing with neutral resin, observing black matrix and striatum of Hippocampus under optical microscope, and taking picture. The H & E staining results are shown in figure 4, and the CA1 region cone cells of the mouse brain tissue fed by the total protein of each dose group are uniformly distributed, the cells are orderly arranged, the morphology is complete, the top dendrite of the cone cells is clearly visible, and the results are not obviously different from those of a blank control group. The H & E staining of the brain tissue of mice fed with total proteins of each dose group of ginseng shows that the striatal cells are orderly arranged, the striatal interstitial regions are obviously compact, the matrix interstitial regions are clearly defined, and the results are not obviously different from the blank control group.

Brain tissue removed after sacrifice was fixed with 4% paraformaldehyde. Paraffin embedding slice, dehydration, soaking and flushing in turn; adding primary antibody, incubating and flushing; adding secondary antibody, incubating and flushing; DAB color development, water washing again, counterstaining, dehydration, transparency, sealing and observation. Each slice was randomly selected from 5 high power fields and Image processing was performed using Image J6.0 software. The cumulative optical density (IOD) is obtained and data analysis is performed.

Immunohistochemical experiments were performed on mice brain tissues fed with each dose of total protein of ginseng, and the results are shown in fig. 6, wherein the total protein of ginseng of each dose group has no obvious change on the expression of alpha-Syn and TH of the mice brain tissues. The results of the quantification of the IOD values are shown in FIGS. 7 and 8, and the expression differences of alpha-Syn and TH between groups are not statistically significant.

Example 13

Improvement effect of ginseng total protein on chronic PD model of C57BL/6 mouse

The 60 male C57BL/6 mice were randomly divided into 6 groups, which were a blank control group, a model control group, a positive control group and a low, medium and high dose group of total protein of ginseng, respectively. Among the other groups, 5 mice were given daily intraperitoneal injections of 35mg/kg MPTP for 4 weeks, once every 3 days in the first two weeks and once every 2 days in the second two weeks, respectively, except for the blank group. After the blank control group was given the same volume of physiological saline in the same manner for 4 weeks, the positive control group was given a slow release tablet of about 70mg/kg of carbidopa by intragastric administration, and each dosage group of total ginseng protein was given by intragastric administration according to the dosage amount in example 11 for 4 weeks. The blank and model control groups were given the same dosing regimen with the same volume of distilled water. Two ends of a rope with moderate thickness and about 80 cm long are respectively fixed, a mouse is placed on the rope in parallel and is inverted, the four-claw gripping condition is recorded, and meanwhile the hanging time of the mouse is recorded. Compared with the blank control group, the model control group has significant difference (#P < 0.01), which proves that the model is constructed successfully.

The results of H & E staining and slicing of brain tissue of the mice with the chronic PD model by the ginseng total protein of each dosage group are shown in fig. 9 and 10, and the results show that compared with a blank control group, cone cells in CA1 region of the mice with the chronic PD model group are disordered and loose, and the positive control group and the ginseng total protein group can improve the distribution of the sea horse cells of the mice to different degrees. Compared with the blank control group, the mouse striatum interarea of the chronic PD model group is sparse, the boundary limit of the matrix interarea is fuzzy, and the positive control group and the ginseng total protein group can improve the striatum interarea distinction. The H & E staining of the intestinal tissue of the mice in the chronic PD model by the total ginseng protein of each dose group can be seen that the intestinal villi of the mice in other groups except the model control group are complete, the epithelial cells are closely arranged, the intestinal glands are complete, and inflammatory cell infiltration is avoided. PAS staining showed significantly more goblet cells than the model control group.

The results of the immunohistochemical experiments are shown in figures 11-13, and the experimental results show that compared with a blank group, the expression of the alpha-Syn of a model control group is obviously increased, and the expression has obvious difference (#P < 0.01); the positive control group and the medium-dose ginseng total protein group have significant differences (P < 0.01) compared with the model control group, and the low-dose group and the high-dose group have statistical significance (P < 0.05). FIG. 14 shows that in TH expression experiments, model control TH expression was significantly reduced compared to the placebo group, with significant differences (#P < 0.01); the positive control group has significant difference (P < 0.01) compared with the model control group, and the total protein difference of the ginseng in the low, medium and high dose groups has statistical significance (P < 0.05).

The results show that the ginseng total protein obtained by the preparation method disclosed by the application has no toxic or side effect, can obviously improve the behavior disorder of a chronic PD model mouse, can obviously improve the brain hippocampal cell distribution and the striatal inter-body area distribution of the mouse, reduce alpha-Syn aggregation, increase TH expression, reduce inflammatory infiltration of intestinal tissues and increase goblet cells of the intestinal tissues, and can be used as an active ingredient of a medicament for preventing, relieving and treating the Parkinson disease.

The present application has been described in detail in order to make those skilled in the art understand the present application and implement it, but the present application is not limited to the above embodiments, and all equivalent changes or modifications according to the spirit of the present application should be included in the scope of the present application.

Claims

1. The ginseng total protein extract is characterized in that the ginseng total protein extract is freeze-dried powder, and 8 proteins with the highest content in the ginseng total protein extract are as follows: ribonuclease-like major storage proteins, flavin-like oxidoreductase FOX5, beta-amylase-like, latex-like proteins, glyceraldehyde 3-phosphate dehydrogenase, methionine synthase, ferredoxin-dependent glutamate synthase 1, prosequence protease 2.

2. The ginseng total protein extract according to claim 1, wherein the 8 kinds of proteins are arranged in a high-to-low ratio.

3. The ginseng total protein extract according to claim 1, wherein the ginseng total protein extract is obtained by extracting ginseng dry powder, and 23.9mg to 29.18mg of ginseng total protein can be extracted per gram of ginseng dry powder.

4. A total ginseng protein extract according to claim 3, wherein the total ginseng protein extract has a protein purity of 80.80%.

5. The method for preparing a ginseng total protein extract according to any one of claims 1 to 4, comprising the steps of:

the preparation method comprises the following steps:

(1) Mixing ginseng dry powder with water, regulating pH value to 7.0-9.0 by NaOH, leaching for 4-12 h at 4 ℃, and separating to obtain supernatant and residues;

(2) HCl regulates the pH value of the supernatant to 3.0-5.0, and the supernatant is centrifuged at 2-6 ℃ overnight at low temperature, the sediment is taken, water is added and the pH value is regulated to 7.0-9.0, so that the sediment is redissolved, an ultrafiltration tube is adopted to intercept low-temperature ultrafiltration, the supernatant is taken, and the ginseng total protein extract is obtained after freeze-drying.

6. The preparation method according to claim 5, wherein in the step (1), the water is used in an amount of 8-12 times the volume of the dry ginseng powder, and the pH value in the step (1) is adjusted to 7.0-8.0; controlling the leaching time in the step (1) to be 6-10 h.

7. The preparation method according to claim 5, wherein the residue obtained in the step (1) is used in place of the ginseng dry powder obtained in the step (1) and the step (1) is repeated 1 to 3 times, and the supernatant is used in the step (2).

8. The process according to claim 1, wherein water is added in step (2) and the pH is adjusted to 7.0 to 8.0, the ultrafiltration tube in step (2) has a molecular weight cut-off of 2000 to 4000Da, and the HCl in step (2) has a pH of 3.5 to 4.5.

9. The method according to claim 5, wherein the low temperature centrifugation, the low temperature ultrafiltration and the separation after extraction are all carried out at a temperature of less than 25 ℃.

10. Use of the ginseng total protein extract according to any one of claims 1 to 4 for the preparation of a medicament for preventing, alleviating and treating parkinson's disease.