CN113712915A - Preparation method of aprepitant emulsion injection - Google Patents

Preparation method of aprepitant emulsion injection Download PDF

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CN113712915A
CN113712915A CN202110018100.7A CN202110018100A CN113712915A CN 113712915 A CN113712915 A CN 113712915A CN 202110018100 A CN202110018100 A CN 202110018100A CN 113712915 A CN113712915 A CN 113712915A
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injection
aprepitant
emulsion
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郭淑儿
覃志君
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Guangzhou Man Xiang Pharmaceutical Co ltd
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/535Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
    • A61K31/53751,4-Oxazines, e.g. morpholine
    • A61K31/53771,4-Oxazines, e.g. morpholine not condensed and containing further heterocyclic rings, e.g. timolol
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61P1/00Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/08Drugs for disorders of the alimentary tract or the digestive system for nausea, cinetosis or vertigo; Antiemetics
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents

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Abstract

The invention relates to the technical field of medicinal preparations, in particular to a preparation method of aprepitant emulsion injection, which comprises the following steps: weighing aprepitant, an emulsifier, a cosolvent and oil for injection, and stirring and mixing in a water bath to obtain an oil phase; weighing a pH regulator, an osmotic pressure regulator and water for injection, and stirring and mixing to obtain a water phase; adding the water phase into the oil phase, and shearing and emulsifying at the rotating speed of 15000-20000 rpm to obtain coarse emulsion; and (3) adding the crude milk into a high-pressure homogenizer, homogenizing for 5-6 times at 12000-15000 psi, filtering and sterilizing the fine milk through a microporous filter membrane after homogenizing, wherein the pH value of the solution is 7.5-8.5, and thus obtaining the aprepitant emulsion injection. The aprepitant emulsion injection with good antioxidant property and emulsifying effect is prepared by controlling the content of the emulsifier, and parameters such as shearing speed, homogenizing pressure, homogenizing temperature and the like in the emulsion preparation process, and meanwhile, the operability is ensured in the preparation process, the process is simplified, and the equipment loss is reduced.

Description

Preparation method of aprepitant emulsion injection
Technical Field
The invention relates to the technical field of medicinal preparations, in particular to a preparation method of an aprepitant emulsion injection.
Background
Aprepitant (Aprepitant), namely Aprepitant and acenidazole, is an off-white to light-yellow crystalThe solid chemical of (1). Chemical name 5- [2(R) - [1(R) - [3, 5-bis (trifluoromethyl) phenyl]Ethoxy radical]-3(S) - (4-fluorophenyl) morpholin-4-ylmethyl]-3, 4-dihydro-2H-1, 2, 4-triazol-3-one of formula C23H21F7N4O3The molecular weight is 534.42700, the water-insoluble acetonitrile-slightly soluble acetonitrile-ethanol soluble glass has a melting point of 75-76 ℃. Aprepitant is used clinically mainly to prevent acute and delayed nausea and vomiting during the primary and repeat treatments of highly emetogenic anti-tumor chemotherapy.
In the prior art, in the aprepitant emulsion injection preparation process, an aprepitant raw material is insoluble in water, an oil-in-water preparation process is adopted, high-speed shearing and high-pressure homogenization are adopted, the high-pressure homogenization pressure is 18000psi, homogenization is carried out for 8 times, and the homogenization process is complex and has more times; and the operation is complicated, and the excessive pressure can cause great loss to equipment. Therefore, there is a need for an improved process for preparing an aprepitant emulsion injection.
Disclosure of Invention
Aiming at the problems, the invention provides a preparation method of aprepitant emulsion injection, which ensures the operability of the preparation process, simplifies the process and reduces the equipment loss.
The invention adopts the following technical scheme:
a preparation method of aprepitant emulsion injection comprises the following steps:
(1) preparing an oil phase: weighing aprepitant, an emulsifier and a cosolvent, stirring and mixing in a water bath at 25-80 ℃, then adding oil for injection, and stirring and mixing in a water bath at 25-80 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing pH regulator, osmotic pressure regulator and water for injection, and stirring and mixing at normal temperature to obtain water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, keeping the temperature at 25-40 ℃, and performing shearing emulsification at the rotating speed of 15000-20000 rpm for 2-8 min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing for 5-6 times at 12000-15000 psi, filtering the fine milk after homogenizing through a microporous filter membrane, filtering and sterilizing, wherein the pH value of the solution is 7.5-8.5, and thus obtaining the aprepitant emulsion injection;
wherein the weight percentage of each component is as follows: 0.2-1.2 wt% of aprepitant, 0.25-0.75 wt% of pH regulator, 3-8 wt% of osmotic pressure regulator, 56-75 wt% of water for injection, 12-15 wt% of emulsifier, 2-5 wt% of cosolvent and 5-15 wt% of oil for injection.
Further, the emulsifier is hydrogenated soybean phospholipid or hydrogenated soybean phosphatidylcholine.
Further, the pH regulator is any one of sodium hydroxide, sodium citrate, sodium dihydrogen phosphate or sodium oleate.
Further, the osmotic pressure regulator is any one of xylitol, sorbitol, mannitol and sucrose.
Furthermore, the cosolvent is any one or more of ethanol, glycerol, propylene glycol and polyethylene glycol.
Furthermore, the oil for injection is any one or more of soybean oil, peanut oil, hydrogenated corn oil, triglyceride, intermediate-linked triglyceride, sesame oil and sunflower seed oil.
Phospholipids are important components of biological membranes, are the basic substances of life, are the active components of all biological cells, and play an important role in cell penetration and metabolism. Hydrogenated lecithin is a stable emulsifier and humectant formed by hydrogenation of lecithin under the action of a catalyst, and the stability and emulsibility of hydrogenated lecithin are improved, so that the hydrogenated lecithin is widely applied to various industries such as food, pharmaceutical industry, cosmetics and the like. The hydrogenated lecithin has strong hydrophilicity and moisture retention, has strong affinity to skin and mucous membrane, and can play a role in moisturizing, emulsifying, dispersing, conditioning the skin and the like when being used in a cosmetic formula. Phosphatidylcholine (1, 2-diacyl-sn-glycerol-3-phosphatidylcholine) is an amphiphilic molecule consisting of a hydrophilic head and a hydrophobic tail, which is a phospholipid with a choline group inserted in the head. Phosphatidylcholine is an important component of biological membranes and can be easily extracted from a variety of sources, such as egg yolk and soy beans.
The invention adopts soybean phospholipid, preferably hydrogenated soybean phospholipid or hydrogenated soybean phosphatidylcholine as an emulsifier to replace the prior animal phospholipid egg yolk lecithin, thereby improving the medication safety.
Further, in the step (3), the fine milk is filtered through a microporous filter membrane, and the fine milk firstly passes through 0.45 μm and then passes through 0.22 μm.
Further, adding the coarse milk obtained in the step (3) into a high-pressure homogenizer, controlling the sample injection temperature to be 10-40 ℃ and controlling the sample outlet temperature to be 40-70 ℃.
According to the preparation method of the aprepitant emulsion injection, the aprepitant emulsion injection with good oxygen resistance and emulsification effect is prepared by controlling the content of the emulsifier, and parameters such as the shearing speed, the homogenizing pressure, the homogenizing temperature and the like in the emulsion preparation process, and meanwhile, the operability is ensured in the preparation process, the process is simplified, and the equipment loss is reduced.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The materials or reagents required in the following examples of the invention were all commercially available from the open, unless otherwise specified, and the high pressure homogenizer equipment manufacturer used was GEA, model NS2006H, maximum pressure 27500 psi.
Example 1
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier hydrogenated Soybean Phospholipids 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of hydrogenated soybean phospholipid and 30g of absolute ethyl alcohol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 40 deg.C, emulsifying by shearing at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature to be 20 ℃, the homogenizing pressure to be 15000psi, homogenizing for 6 times, controlling the sample outlet temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m, then passing through 0.22 mu m, filtering and sterilizing, and obtaining the aprepitant emulsion injection with the pH value of the solution of 8.0, wherein the measured particle size is 70nm (the result of the particle size of a reference preparation is 65 nm).
The results are as follows: after the homogenization times reach 6 times, the homogenized grain size can basically reach the target value, and the pH value, the content and related substances meet the requirements.
Example 2
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier hydrogenated soybean phosphatidylcholine 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of hydrogenated soybean phosphatidylcholine and 30g of absolute ethanol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 40 deg.C, emulsifying by shearing at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature to be 20 ℃, the homogenizing pressure to be 15000psi, homogenizing for 6 times, controlling the sample outlet temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m, and then passing through 0.22 mu m, filtering and sterilizing, and obtaining the aprepitant emulsion injection with the pH value of 8.0, wherein the measured particle size is 69nm (the result of the particle size of a reference preparation is 65 nm).
The results are as follows: the final grain diameter can basically reach the target value, the homogenizing pressure and homogenizing times are superior to those of the prior art, the equipment loss is low, and the pH value, the content and related substances meet the requirements.
Example 3
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier hydrogenated soybean phosphatidylcholine 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of hydrogenated soybean phosphatidylcholine and 30g of absolute ethanol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 40 deg.C, emulsifying by shearing at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature to be 30 ℃, the homogenizing pressure to be 15000psi, homogenizing for 6 times, controlling the sample outlet temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m, then passing through 0.22 mu m, filtering and sterilizing, and obtaining the aprepitant emulsion injection with the pH value of the solution of 8.0, wherein the measured particle size is 65nm (the result of the particle size of a reference preparation is 65 nm).
The results are as follows: the final grain diameter can reach the target value, the homogenizing pressure and homogenizing times are superior to those of the prior art, the equipment loss is low, and the pH value, the content and related substances meet the requirements.
Example 4
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier hydrogenated soybean phosphatidylcholine 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of hydrogenated soybean phosphatidylcholine and 30g of absolute ethanol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 40 deg.C, emulsifying by shearing at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sampling temperature to be 20-40 ℃ (designing the temperature in a step-type manner, shown in table 1 below), controlling the homogenizing pressure to be 15000psi, homogenizing for 5 times, controlling the sampling temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m and then passing through 0.22 mu m, filtering and sterilizing, controlling the pH value of the solution to be 8.0, obtaining the aprepitant emulsion injection, and measuring the particle size to be 64nm (the result of the particle size of a reference preparation is 65 nm).
TABLE 1 stepped thermometer
Number of homogenisations 1 2 3 4 5 6
Temperature control 40℃ 35℃ 30℃ 25℃ 20℃ 25℃
The results are as follows: the final grain diameter can reach the target value, the homogenization times and the pressure are reduced compared with the prior art, and the content, the pH value and related substances of the sample meet the requirements.
Comparative example 1
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator mannitol 60g
720g of water for injection
Emulsifier soybean lecithin 130g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 130g of soybean phospholipid and 30g of absolute ethyl alcohol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, mannitol and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 25 deg.C, shearing and emulsifying at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature to be 20 ℃, the homogenizing pressure to be 15000psi, homogenizing for 8 times, controlling the sample outlet temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m, then passing through 0.22 mu m, filtering and sterilizing, and obtaining the aprepitant emulsion injection with the pH value of 7.0, wherein the measured particle size is 101nm (the result of the particle size of a reference preparation is 65 nm).
The results are as follows: after the homogenization times reach 8 times, the final particle size still cannot reach the target value, and the pH value, the content and related substances meet the requirements.
Comparative example 2
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier soybean lecithin 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of soybean phospholipid and 30g of absolute ethyl alcohol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 25 deg.C, and emulsifying by shearing at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature to be 20 ℃, the homogenizing pressure to be 15000psi, homogenizing for 6 times, controlling the sample outlet temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m, then passing through 0.22 mu m, filtering and sterilizing, and obtaining the aprepitant emulsion injection with the pH value of 8.0, wherein the measured particle size is 105nm (the result of the particle size of a reference preparation is 65 nm).
The results are as follows: after the homogenization times reach 6 times, the final particle size cannot reach the target value, and the pH value, the content and related substances meet the requirements.
Comparative example 3
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier soybean lecithin 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of soybean phospholipid and 30g of absolute ethyl alcohol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 25 deg.C, and emulsifying by shearing at 20000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature to be 20 ℃, the homogenizing pressure to be 15000psi, homogenizing for 6 times, controlling the sample outlet temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m, then passing through 0.22 mu m, filtering and sterilizing, and obtaining the aprepitant emulsion injection with the pH value of the solution being 8.0, wherein the measured particle size is 106nm (the result of the particle size of a reference preparation is 65 nm).
The results are as follows: after the homogenization times reach 6 times, the homogenization grain size is not improved, the final grain size still does not reach the target value, and the pH value, the content and related substances meet the requirements.
Comparative example 4
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier hydrogenated soybean phosphatidylcholine 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of hydrogenated soybean phosphatidylcholine and 30g of absolute ethanol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 40 deg.C, emulsifying by shearing at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature to be 20 ℃, the homogenizing pressure to be 10000psi, homogenizing for 6 times, controlling the sample outlet temperature to be within 60 ℃, filtering the fine milk after homogenizing through a microporous filter membrane, firstly passing through 0.45 mu m, and then passing through 0.22 mu m, filtering and sterilizing, and obtaining the aprepitant emulsion injection with the pH value of 8.0, wherein the measured particle size is 88nm (the result of the particle size of a reference preparation is 65 nm).
The results are as follows: the homogenizing pressure of the sample is reduced, the target value cannot be reached after the final particle size is homogenized for 6 times, and the pH value, the content and related substances meet the requirements.
Comparative example 5
An aprepitant emulsion injection comprises the following components in percentage by weight:
aprepitant 7.8g
pH adjustor sodium oleate 6g
Osmotic pressure regulator sucrose 60g
720g of water for injection
Emulsifier hydrogenated soybean phosphatidylcholine 156g
Cosolvent Anhydrous ethanol 30g
Soybean oil 102g for injection
The aprepitant emulsion injection of the embodiment is prepared by the following preparation method:
(1) preparing an oil phase: weighing 7.8g of aprepitant, 156g of hydrogenated soybean phosphatidylcholine and 30g of absolute ethanol, stirring and mixing in a water bath at 60 ℃, then adding soybean oil, and stirring and mixing in a water bath at 60 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing sodium oleate, sucrose and water for injection, and stirring and mixing at normal temperature to obtain a water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, maintaining the temperature at 40 deg.C, emulsifying by shearing at 15000rpm for 5min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing under high pressure, controlling the sample injection temperature at 40 deg.C, homogenizing pressure at 15000psi, homogenizing for 4 times, controlling the sample outlet temperature within 70 deg.C, filtering the fine milk with microporous membrane, passing through 0.45 μm and 0.22 μm, filtering, sterilizing, and adjusting pH to 8.0 to obtain aprepitant emulsion injection with particle size of 59nm (reference preparation particle size result of 65 nm).
The results are as follows: the grain size of the sample is obviously reduced, but the sample is homogenized until the later sample has obvious floatage, the demulsification phenomenon occurs, related substances do not meet the requirements, the content is lower, and the pH value meets the requirements.
The main process parameters and performance test results of examples 1-4 and comparative examples 1-5 are shown in Table 2.
Table 2 results of performance testing
Figure BDA0002887720330000101
As can be seen from the results of examples 1-4 and comparative examples 1-5, the particle size results are substantially unaffected by shear with greater shear rotation. Through the homogeneity, pressure is big more, and the particle size decline effect is more obvious after the homogeneity, and 15000psi contrast 10000psi, pressure is obvious to the particle size influence, through changing the emulsifier kind, trades hydrogenated soybean phosphatidylcholine, and the homogeneous same number of times particle size result obviously improves. The temperature of the sample solution before homogenization has obvious influence on the particle size result, the particle size is obviously reduced when the temperature is higher, but the sample is sensitive to the temperature and emulsion breaking easily occurs when the temperature is too high, so the homogenization temperature needs to be controlled in the preparation process. According to the invention, the use amount of the emulsifier, the type of the emulsifier and the homogenization temperature are improved, so that the operability of the sample solution in the preparation process is ensured, the process is simplified, and the equipment consumption is reduced.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.

Claims (8)

1. A preparation method of aprepitant emulsion injection is characterized by comprising the following steps:
(1) preparing an oil phase: weighing aprepitant, an emulsifier and a cosolvent, stirring and mixing in a water bath at 25-80 ℃, then adding oil for injection, and stirring and mixing in a water bath at 25-80 ℃ to obtain an oil phase;
(2) preparation of an aqueous phase: weighing pH regulator, osmotic pressure regulator and water for injection, and stirring and mixing at normal temperature to obtain water phase;
(3) preparing an emulsion: adding the water phase into the oil phase, keeping the temperature at 25-40 ℃, and performing shearing emulsification at the rotating speed of 15000-20000 rpm for 2-8 min to obtain coarse emulsion; adding the coarse milk into a high-pressure homogenizer, homogenizing for 5-6 times at 12000-15000 psi, filtering and sterilizing the fine milk through a microporous filter membrane after homogenizing, wherein the pH value of the solution is 7.5-8.5, and obtaining the aprepitant emulsion injection;
wherein the weight percentage of each component is as follows: 0.2-1.2 wt% of aprepitant, 0.25-0.75 wt% of pH regulator, 3-8 wt% of osmotic pressure regulator, 56-75 wt% of water for injection, 12-15 wt% of emulsifier, 2-5 wt% of cosolvent and 5-15 wt% of oil for injection.
2. The method of preparing an aprepitant emulsion injection as claimed in claim 1, wherein the emulsifier is hydrogenated soybean phospholipid or hydrogenated soybean phosphatidylcholine.
3. The method for preparing aprepitant emulsion injection according to claim 1, wherein the pH regulator is any one of sodium hydroxide, sodium citrate, sodium dihydrogen phosphate or sodium oleate.
4. The method for preparing aprepitant emulsion injection according to claim 1, wherein the osmotic pressure regulator is any one of xylitol, sorbitol, mannitol and sucrose.
5. The method for preparing aprepitant emulsion injection according to claim 1, wherein the cosolvent is any one or more of ethanol, glycerol, propylene glycol and polyethylene glycol.
6. The method for preparing aprepitant emulsion injection according to claim 1, wherein the oil for injection is any one or more of soybean oil, peanut oil, hydrogenated corn oil, triglyceride, middle-linked triglyceride, sesame oil and sunflower seed oil.
7. The process for preparing an aprepitant emulsion injection according to claim 1, wherein the fine emulsion in step (3) is filtered through a microporous membrane, first through 0.45 μm and then through 0.22 μm.
8. The method for preparing aprepitant emulsion injection according to claim 1, wherein the coarse emulsion in the step (3) is added into a high-pressure homogenizer, the injection temperature is controlled to be 10-40 ℃, and the sampling temperature is controlled to be 40-70 ℃.
CN202110018100.7A 2021-01-07 2021-01-07 Preparation method of aprepitant emulsion injection Pending CN113712915A (en)

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