阅读说明：本技术 一种含有谷维素的药物组合物及其制备方法和应用 (Pharmaceutical composition containing oryzanol and preparation method and application thereof ) 是由 张用杰 赵颖 于 2021-01-21 设计创作，主要内容包括：本发明属于药物制备技术领域,具体涉及一种含有谷维素的药物组合物及其制备方法和应用。所述谷维素组合物,按照重量份数计,包括以下组分：谷维素5-50份、植物提取物1-5份。该组合物在治疗神经失调、降血脂等方面具有较好的功效,且制备方法简单,副作用小。(The invention belongs to the technical field of medicine preparation, and particularly relates to a pharmaceutical composition containing oryzanol as well as a preparation method and application thereof. The oryzanol composition comprises the following components in parts by weight: 5-50 parts of oryzanol and 1-5 parts of plant extract. The composition has good effects in treating nervous disorder and reducing blood lipid, and has simple preparation method and small side effects.)

1. The oryzanol composition is characterized by comprising the following components in parts by weight: 5-50 parts of oryzanol and 1-5 parts of plant extract.

2. An oryzanol composition according to claim 1, wherein the plant extract is a mixture of a jiulongcao extract and a polygala tenuifolia extract; the weight ratio of the jiulongcao extract to the polygala tenuifolia extract in the plant extract is 1: 1-5.

3. An oryzanol composition according to claim 1, wherein the plant extract is a mixed extract of jiulongcao and polygala tenuifolia; in the mixed extract, the raw material ratio of the jiulong grass to the polygala root is 1: 2-3.

4. The oryzanol composition as claimed in claim 3, wherein the preparation method of the mixed extract of bauhinia championii and polygala tenuifolia comprises the following steps:

(1) pulverizing herba Euphorbiae Humifusae and cortex et radix Polygalae respectively, and sieving to obtain herba Euphorbiae Humifusae and cortex et radix Polygalae powder;

(2) placing cortex et radix Polygalae powder in ethanol water solution, adding extractant A, heating for extraction, and filtering to obtain primary extractive solution and residue;

(3) placing the residue in ethanol water solution, adding herba Euphorbiae Humifusae, adding extractant B, heating for extraction, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae.

5. An oryzanol composition as claimed in claim 4, wherein in the step (2), the extractant A is 20-30% sodium carbonate aqueous solution by mass fraction; the addition amount of the extractant A is 1-5% of the weight of the polygala tenuifolia powder;

in the step (3), the extractant B is a citric acid aqueous solution with the mass fraction of 10-20%; the addition amount of the extracting agent B is 1-8% of the mass of the jiulong grass;

in the step (3), the heating extraction is as follows: heating to 60-80 deg.C, extracting for 1-2 hr, heating to 100 deg.C, and boiling for 0.5-1 hr.

6. The oryzanol composition of claim 1, further comprising a solvent and an adjuvant; the solvent is at least one of rice bran oil, soybean oil, castor oil, peanut oil, sesame oil, ethanol and acetone; preferably ethanol; the auxiliary material is at least one of alpha cyclodextrin, beta cyclodextrin, sulfobutyl beta cyclodextrin and gamma cyclodextrin; preferably beta cyclodextrin; the oryzanol is a raw material subjected to differential treatment, and has a particle size of 0-D₉₀≤30um。

7. Oryzanol composition as claimed in claim 6, preferably comprising the following components in parts by weight: 5-20 parts of oryzanol, 1-5 parts of plant extract, 50-400 parts of solvent and 600 parts of auxiliary material.

8. A process for the preparation of a oryzanol composition as claimed in any of claims 1-7, comprising the steps of: dissolving oryzanol in solvent, adding plant extract, adding adjuvants for clathration, and drying at low temperature under reduced pressure to obtain oryzanol composition.

9. Use of the oryzanol composition as defined in any one of claims 1-7 or the oryzanol composition prepared by the process for preparing the oryzanol composition as defined in claim 8 in pharmaceutical preparations of the oryzanol composition.

10. A pharmaceutical formulation of oryzanol comprising the oryzanol composition of any one of claims 1-7 or the oryzanol composition prepared by the preparation method of the oryzanol composition of claim 8, wherein the formulation is any one of tablets, capsules, granules or dry suspensions.

Technical Field

The invention belongs to the technical field of medicine preparation, and particularly relates to a pharmaceutical composition containing oryzanol as well as a preparation method and application thereof.

Background

Oryzanol is a mixture of ferulic acid ester mainly comprising triterpene (alkene) alcohol, and is mainly present in rice bran oil. It mainly acts on autonomic nervous system and endocrine center of diencephalon, and can regulate autonomic nervous function, reduce endocrine balance disorder, and improve mental disorder symptoms. Meanwhile, the health-care food also has various physiological functions of reducing blood fat, reducing liver lipid, preventing lipid oxidation, resisting oxidation and the like. In addition, it has effect in resisting arrhythmia, and can reduce myocardial excitability by regulating autonomic nerve function.

The main adverse reactions are the occasional adverse reactions of stomach discomfort, nausea, vomiting, dry mouth, fatigue, rash, breast swelling, excessive grease secretion, alopecia, weight gain and the like after oral administration, and the adverse reactions can disappear after stopping taking the medicine.

At present, oryzanol preparations in the prior art are numerous, for example, Chinese patent application CN1338255A discloses an oryzanol oily injection, which is prepared by dissolving high-purity oryzanol powder and refined vegetable oil, wherein 2 ml of the refined vegetable oil is added in every 40 mg of the oryzanol powder, the oryzanol content in the high-purity oryzanol powder is 100%, the acid value of the refined vegetable oil is 0.56, the saponification value is 185-200, and the iodine value is 79-128. The curative effect of treating the vegetative nerve functional disturbance is obviously better than that of the oryzanol tablets.

Chinese patent application CN101057826A discloses an oryzanol injection using ethyl oleate as solvent and its preparation method. This patent application uses ethyl oleate as a solvent for the injection solution. The preparation method comprises the following steps: and (3) adding ethyl oleate into oryzanol 10-100G, dissolving, diluting to a constant volume of 1000ML, filtering and sterilizing the solution by using a microporous filter membrane, filling the solution into a medicine bottle after the solution is qualified, and sealing to prepare the injection. The invention can be applied to the preparation and use of oryzanol injection and has the obvious advantages of no sediment and the like.

Chinese patent application CN1823789A discloses an intravenous oryzanol composition, which comprises an effective dose of oryzanol, a surfactant and a liquid injection preparation of water for injection, wherein the content of the surfactant is 0.01-30% of the total weight of the composition; the freeze-dried preparation is prepared by freeze-drying liquid of oryzanol, surfactant, excipient and water for injection with effective dose, and the content of the surfactant accounts for 0.01-30% of the volume of the solution. The composition is convenient for use.

Although the use and the curative effect of the oryzanol are improved to a certain extent in the prior art, the oryzanol has the characteristics of low solubility and easy oxidation, and the properties not only cause low absorption rate of the oryzanol in practical application, but also cause difficult quality control in production. Therefore, in order to solve these problems, it is necessary to improve a oryzanol drug to prepare a oryzanol drug having better efficacy and less side effects.

Disclosure of Invention

In order to overcome the technical problems, the invention provides the oryzanol composition which has better effects on treating nervous disorder, reducing blood fat and the like, and has simple preparation method and small side effect.

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

a oryzanol composition comprises the following components: oryzanol and plant extract.

Preferably, the oryzanol composition comprises the following components in parts by weight:

5-50 parts of oryzanol and 1-5 parts of plant extract.

Preferably, the plant extract is a mixture of a jiulongcao extract and a polygala tenuifolia extract.

Preferably, the weight ratio of the jiulongcao extract to the polygala tenuifolia extract in the plant extract is 1: 1-5.

Preferably, the plant extract is a mixed extract of jiulongcao and polygala tenuifolia.

Preferably, the raw material ratio of the jiulongcao to the polygala tenuifolia in the mixed extract is 1: 2-3.

Preferably, the preparation method of the mixed extract of the jiulongcao and the polygala tenuifolia comprises the following steps:

(1) pulverizing herba Euphorbiae Humifusae and cortex et radix Polygalae respectively, and sieving to obtain herba Euphorbiae Humifusae and cortex et radix Polygalae powder;

(2) placing cortex et radix Polygalae powder in ethanol water solution, adding extractant A, heating for extraction, and filtering to obtain primary extractive solution and residue;

(3) placing the residue in ethanol water solution, adding herba Euphorbiae Humifusae, adding extractant B, heating for extraction, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae.

Preferably, in the step (1), the sieving is a 30-60 mesh sieve;

preferably, in the step (2), the ethanol aqueous solution is an ethanol aqueous solution with a volume concentration of 30-70%;

preferably, in the step (2), the extractant A is a sodium carbonate aqueous solution with the mass fraction of 20-30%;

preferably, the addition amount of the extractant A is 1-5% of the mass of the polygala tenuifolia powder;

preferably, in the step (2), the temperature of the heating extraction is 70-90 ℃; the extraction time is 1-2 h.

Preferably, in the step (3), the ethanol aqueous solution is 50-80% ethanol aqueous solution by volume concentration;

preferably, in the step (3), the extractant B is a citric acid aqueous solution with the mass fraction of 10-20%;

preferably, the addition amount of the extracting agent B is 1-8% of the mass of the jiulongcao;

preferably, in step (3), the heating extraction is: heating to 60-80 deg.C, extracting for 1-2 hr, heating to 100 deg.C, and boiling for 0.5-1 hr.

Preferably, the oryzanol composition further comprises a solvent and an auxiliary material.

Preferably, the oryzanol composition comprises the following components in parts by weight:

5-20 parts of oryzanol, 1-5 parts of plant extract, 50-400 parts of solvent and 600 parts of auxiliary material.

Preferably, the solvent is at least one of rice bran oil, soybean oil, castor oil, peanut oil, sesame oil, ethanol and acetone; preferably ethanol;

preferably, the auxiliary material is at least one of alpha cyclodextrin, beta cyclodextrin, sulfobutyl beta cyclodextrin and gamma cyclodextrin; beta cyclodextrin is preferred.

Preferably, the oryzanol is a raw material subjected to differential processing, and the grain diameter is more than 0 and less than D₉₀≤30um。

Another object of the present invention is to provide a method for preparing the oryzanol composition, comprising the steps of: dissolving oryzanol in solvent, adding plant extract, adding adjuvants for clathration, and drying at low temperature under reduced pressure to obtain oryzanol composition.

Preferably, the oryzanol composition preparation method comprises the following steps:

step 1: performing differential treatment on oryzanol;

step 2: dissolving oryzanol in a solvent, and adjusting the pH value; preparing oryzanol solution;

and step 3: dispersing the auxiliary materials in a solvent to prepare pasty auxiliary materials;

and 4, step 4: adding plant extract into oryzanol solution, mixing, adding into pasty adjuvant, stirring, and grinding;

and 5: drying at low temperature under reduced pressure to obtain oryzanol composition.

Preferably, in step 2, the pH value is 8-10;

preferably, in step 5, the low temperature is 20-30 ℃.

The invention also aims to provide the application of the oryzanol composition in pharmaceutical preparations of the oryzanol composition.

The invention also aims to provide a pharmaceutical preparation of oryzanol containing the oryzanol composition, wherein the preparation is any one of tablets, capsules, granules or dry suspensions.

Compared with the prior art, the invention has the technical advantages that:

(1) the oryzanol composition provided by the invention has better bioavailability.

(2) The oryzanol composition provided by the invention can effectively treat nervous disorder and reduce blood fat.

(3) The jiulong grass and the polygala tenuifolia have good synergistic effect, and can effectively promote the effects of oryzanol in calming nerves, reducing blood fat and resisting oxidation.

(4) The application uses citric acid and sodium carbonate in the extraction process of the jiulongcao and the polygala tenuifolia, and can effectively promote the extraction of effective components.

(5) The active significance of the invention is that the problem of poor solubility of the oryzanol is solved by inclusion of the oryzanol, and the pharmaceutical composition can be prepared into tablets, capsules, granules, dry suspensions and the like.

Detailed Description

The present invention will be described below with reference to specific examples to make the technical aspects of the present invention easier to understand and grasp, but the present invention is not limited thereto. The experimental methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.

Example 1

A method for preparing mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae comprises the following steps:

(1) respectively taking 1 part of jiulong grass and 2 parts of polygala tenuifolia, crushing, and sieving by a 60-mesh sieve to obtain jiulong grass and polygala tenuifolia powder;

(2) placing cortex et radix Polygalae powder in 30% ethanol water solution, adding 5% extractant A (20% sodium carbonate water solution), heating to 70 deg.C, extracting for 1 hr, and filtering to obtain primary extractive solution and residue;

(3) placing the residue in 80% ethanol water solution, adding herba Euphorbiae Humifusae, adding 1% by mass (based on the mass of herba Euphorbiae Humifusae) of extractant B (20% citric acid water solution), heating to 60 deg.C, extracting for 2 hr, heating to 100 deg.C, boiling for 0.5 hr, extracting, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae.

Example 2

A method for preparing mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae comprises the following steps:

(1) respectively taking 1 part of jiulong grass and 3 parts of polygala tenuifolia, crushing, and sieving by a 30-mesh sieve to obtain jiulong grass and polygala tenuifolia powder;

(2) placing cortex et radix Polygalae powder in 70% ethanol water solution, adding 1% extractant A (30% sodium carbonate water solution), heating to 90 deg.C, extracting for 2 hr, and filtering to obtain primary extractive solution and residue;

(3) putting the residue into 50% ethanol water solution, adding herba Euphorbiae Humifusae, adding 8% by mass (based on the mass of herba Euphorbiae Humifusae) of extractant B (10% citric acid water solution), heating to 80 deg.C, extracting for 1 hr, heating to 100 deg.C, boiling for 1 hr, extracting, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae.

Example 3

A preparation method of a oryzanol composition comprises the following steps:

step 1: differentiating 10g of oryzanol;

step 2: dissolving oryzanol in 100g of 95% ethanol, and adjusting the pH value to 8; heating to 60 deg.C to obtain oryzanol solution;

and step 3: dispersing 100g of beta-cyclodextrin in 300g of 95% ethanol, and stirring to prepare a pasty auxiliary material;

and 4, step 4: adding 3g of plant extract (mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae prepared in example 1) into oryzanol solution, mixing, adding into pasty adjuvant, maintaining temperature at 40 deg.C, rapidly stirring for 3 hr, and grinding;

and 5: drying at 30 deg.C in a reduced pressure oven until the water content is less than 1% to obtain oryzanol composition.

Example 4

A preparation method of a oryzanol composition comprises the following steps:

step 1: differentiating 5g of oryzanol;

step 2: dissolving oryzanol in 55g of soybean oil, and adjusting the pH value to 8; heating to 60 deg.C to obtain oryzanol solution;

and step 3: dispersing 300g of gamma cyclodextrin in 300g of 95% ethanol, and stirring to prepare a pasty auxiliary material;

and 4, step 4: adding 5g of plant extract (mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae prepared in example 2) into oryzanol solution, mixing, adding into pasty adjuvant, maintaining temperature at 40 deg.C, rapidly stirring for 3 hr, and grinding;

and 5: drying at 20 deg.C in a reduced pressure oven until the water content is less than 1% to obtain oryzanol composition.

Example 5

A preparation method of a oryzanol composition comprises the following steps:

step 1: differentiating 20g of oryzanol;

step 2: dissolving oryzanol in 55g of rice bran oil, and adjusting the pH value to 10; heating to 60 deg.C to obtain oryzanol solution;

and step 3: dispersing 300g of beta-cyclodextrin in 300g of 95% ethanol, and stirring to prepare a pasty auxiliary material;

and 4, step 4: adding 1g of plant extract (mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae prepared in example 1) into oryzanol solution, mixing, adding into pasty adjuvant, maintaining temperature at 40 deg.C, rapidly stirring for 3 hr, and grinding;

and 5: drying at 30 deg.C in a reduced pressure oven until the water content is less than 1% to obtain oryzanol composition.

Example 6

The difference compared to example 3 is that a mixture of jiulongcao extract and polygala tenuifolia extract is used after the separate extraction.

The preparation method of the jiulong grass extract comprises the following steps:

(1) pulverizing herba Euphorbiae Humifusae, and sieving with 60 mesh sieve to obtain herba Euphorbiae Humifusae powder;

(2) putting the jiulong grass into 80% ethanol water solution, adding 1% by mass (based on the mass of the jiulong grass) of an extracting agent B (20% citric acid water solution), firstly heating to 60 ℃, extracting for 2h, then heating to 100 ℃, boiling for 0.5h, extracting, and filtering to obtain an extracting solution;

(4) concentrating the extractive solution, and drying to obtain herba Euphorbiae Humifusae extract.

The preparation method of the polygala root extract comprises the following steps:

(1) pulverizing cortex et radix Polygalae, and sieving with 60 mesh sieve to obtain herba Euphorbiae Humifusae and cortex et radix Polygalae powder;

(2) placing cortex et radix Polygalae powder in 30% ethanol water solution, adding 5% extractant A (20% sodium carbonate water solution), heating to 70 deg.C, extracting for 1 hr, and filtering to obtain primary extractive solution and residue;

(3) placing the residue in 80% ethanol water solution, adding 1% by mass (based on the mass of the residue) of extractant B (20% citric acid water solution), heating to 60 deg.C, extracting for 2 hr, heating to 100 deg.C, boiling for 0.5 hr, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of cortex et radix Polygalae.

The preparation method of the oryzanol composition comprises the following steps:

step 1 to step 3 the same as in example 3;

and 4, step 4: adding 3g plant extract (mixture of 1 part of herba Euphorbiae Humifusae extract and 2 parts of cortex et radix Polygalae extract) into oryzanol solution, mixing, adding into pasty adjuvant, maintaining temperature at 40 deg.C, rapidly stirring for 3 hr, and grinding;

and 5: drying at 30 deg.C in a reduced pressure oven until the water content is less than 1% to obtain oryzanol composition.

Example 7

The difference compared to example 3 is the preparation method of the plant extract.

A method for preparing mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae comprises the following steps:

(1) respectively taking 1 part of jiulong grass and 2 parts of polygala tenuifolia, crushing, and sieving by a 60-mesh sieve to obtain jiulong grass and polygala tenuifolia powder;

(2) placing cortex et radix Polygalae powder in 30% ethanol water solution, adding 5% extractant A (20% sodium carbonate water solution), heating to 70 deg.C, extracting for 1 hr, and filtering to obtain primary extractive solution and residue;

(3) placing the residue in 80 vol% ethanol water solution, adding herba Euphorbiae Humifusae, heating to 60 deg.C, extracting for 2 hr, heating to 100 deg.C, boiling for 0.5 hr, extracting, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae.

The preparation method of the oryzanol composition comprises the same steps as example 3.

Example 8

The difference compared to example 3 is the preparation method of the plant extract.

A method for preparing mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae comprises the following steps:

(1) respectively taking 1 part of jiulong grass and 2 parts of polygala tenuifolia, crushing, and sieving by a 60-mesh sieve to obtain jiulong grass and polygala tenuifolia powder;

(2) placing cortex et radix Polygalae powder in 30% ethanol water solution, heating to 70 deg.C, extracting for 1h, and filtering to obtain primary extractive solution and residue;

(3) placing the residue in 80% ethanol water solution, adding herba Euphorbiae Humifusae, adding 1% by mass (based on the mass of herba Euphorbiae Humifusae) of extractant B (20% citric acid water solution), heating to 60 deg.C, extracting for 2 hr, heating to 100 deg.C, boiling for 0.5 hr, extracting, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of herba Euphorbiae Humifusae and cortex et radix Polygalae.

The preparation method of the oryzanol composition comprises the same steps as example 3.

Example 9

The difference compared to example 3 is the different plant extract types.

A preparation method of mixed extract of Japanese Styrax herb and spina date seed comprises the following steps:

(1) respectively taking 1 part of jiulong grass and 2 parts of spina date seeds, crushing, and sieving by a 60-mesh sieve to obtain jiulong grass and spina date seed powder;

(2) putting semen Ziziphi Spinosae powder into 30% ethanol water solution, adding 5% extractant A (20% sodium carbonate water solution), heating to 70 deg.C, extracting for 1h, and filtering to obtain primary extractive solution and residue;

(3) placing the residue in 80% ethanol water solution, adding herba Euphorbiae Humifusae, adding 1% by mass (based on the mass of herba Euphorbiae Humifusae) of extractant B (20% citric acid water solution), heating to 60 deg.C, extracting for 2 hr, heating to 100 deg.C, boiling for 0.5 hr, extracting, and filtering to obtain secondary extractive solution;

(4) mixing the primary extractive solution and the secondary extractive solution, concentrating, and drying to obtain mixed extract of herba Euphorbiae Humifusae and semen Ziziphi Spinosae.

The preparation method of the oryzanol composition comprises the following steps:

step 1 to step 3 the same as in example 3;

and 4, step 4: adding 3g plant extract (mixed extract of herba Euphorbiae Humifusae and semen Ziziphi Spinosae) into oryzanol solution, mixing, adding into pasty adjuvant, maintaining temperature at 40 deg.C, rapidly stirring for 3 hr, and grinding;

and 5: drying at 30 deg.C in a reduced pressure oven until the water content is less than 1% to obtain oryzanol composition.

Examples of effects

1. Efficacy test of oryzanol composition

1.1 the oryzanol compositions obtained in examples 3-9 were used in the blood lipid-lowering efficacy test with the blank control group and the positive control group

The test method comprises the following steps: dividing 54 Kunming mice (each half of male and female, the weight is 18-22g) into 9 groups at random, modeling for 3 weeks, continuously administering the drug and distilled water for intragastric administration for 1 week, and taking 1ml of each mouse by adopting an eyeball blood-taking method; centrifuging at 8000r/min for 15 min, collecting serum, and storing at-20 deg.C. Serum Total Cholesterol (TC), High Density Lipoprotein (HDL), and Triglyceride (TG) contents were measured.

TABLE 1 hypolipidemic efficacy (mmol/L) of oryzanol compositions

Note: p < 0.05 compared to positive control.

Therefore, compared with a blank group, the oryzanol composition medicament provided by the invention has the advantages that the TC \ TG content is obviously reduced and is superior to that of a positive control group; the HDL is higher than that of the blank control group, and has no obvious difference compared with that of the positive control group. Test data show that the composition and the preparation of the effective components have important influence on the effect.

1.2 the oryzanol compositions obtained in examples 3-9 were used in the sedative-hypnotic efficacy test with the blank control group and the positive control group

The test method comprises the following steps: 108 Kunming mice (each half of male and female, with the weight of 18-22g) were randomly divided into 9 groups; acclimation in the laboratory for 1 week. The groups were randomly divided into a blank control group, a positive control group and examples 3 to 9, and 12 were each group. Distilled water was administered to the blank group, and oryzanol equivalent to 30 mg/day was administered to the other groups. And (3) continuously performing intragastric administration for 7d, and after the last administration for 60min, injecting 20mg/kg of pentobarbital sodium into the abdominal cavity of the mouse (the maximum dosage of 90-100% of mouse orthotropic reflex which is not disappeared is estimated), observing how many mice are orthotropic reflex disappeared for more than 1min within 30min, and entering a sleep state after more than 1 min. The sleep onset rate of each group was calculated.

TABLE 2 sedative hypnotic efficacy of oryzanol compositions

Therefore, the composition has obvious improvement on the sleep rate of mice, and the composition has obvious sedative and hypnotic effects and is superior to a blank control group and a positive control group.

2. Drug dissolution test

The oryzanol composition obtained in examples 3-5 was added with 1% magnesium stearate, mixed well, and filled into capsules, each containing 10mg of oryzanol to obtain samples 3-5, respectively, and the dissolution in an aqueous medium was measured, and the results are shown in table 3.

TABLE 3 dissolution of oryzanol drug

Test group

5min

10min

15min

30min

45min

60min

Example 3

85.7％

92.6％

97.5％

99.1％

98.7％

99.5％

Example 4

80.2％

87.6％

92.4％

98.9％

99.2％

101.4％

Example 5

83.5％

96.2％

97.4％

99.9％

100.8％

98.7％

Therefore, the oryzanol composition provided by the invention has better in-vitro dissolution rate, indicates that the oryzanol composition can be quickly released in vivo and has better bioavailability.

The above detailed description is specific to one possible embodiment of the present invention, and the embodiment is not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention should be included in the technical scope of the present invention.