JPS6139924B2 - - Google Patents

Info

Publication number
JPS6139924B2
JPS6139924B2 JP51130435A JP13043576A JPS6139924B2 JP S6139924 B2 JPS6139924 B2 JP S6139924B2 JP 51130435 A JP51130435 A JP 51130435A JP 13043576 A JP13043576 A JP 13043576A JP S6139924 B2 JPS6139924 B2 JP S6139924B2
Authority
JP
Japan
Prior art keywords
lecithin
ethanol
emulsion
fat
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP51130435A
Other languages
Japanese (ja)
Other versions
JPS5356315A (en
Inventor
Shigemitsu Oosawa
Yoshio Ishino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eisai Co Ltd
Original Assignee
Eisai Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eisai Co Ltd filed Critical Eisai Co Ltd
Priority to JP13043576A priority Critical patent/JPS5356315A/en
Publication of JPS5356315A publication Critical patent/JPS5356315A/en
Publication of JPS6139924B2 publication Critical patent/JPS6139924B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Medicinal Preparation (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明はレシチンおよびエタノールを用いて製
造した、脂溶性薬物の安定な乳化液に関するもの
である。 従来、脂溶性薬物の液剤として、非イオン性界
面活性剤を多量に用いた可溶化型の製剤が多用さ
れてきたが、最近では合成界面活性剤の人体に対
する副作用が問題となつてきている。そこで本発
明者等は、合成界面活性剤ではなく、天然物質で
比較的安全性の高いレシチンを用いて乳化型の製
剤を製造する事を試みた。これまでレシチンを用
いて脂溶性薬物を乳化した例としては、ゲフアル
ナートをレシチンで乳化した例(特開昭50−
126821)、およびビタミンEまたはそのエステル
をレシチンおよび植物油を用いて乳化した例(特
開昭49−50124)などが知られている。しかし、
これらの方法で脂溶性薬物の乳化を行なう際に
は、レシチンの乳化力が弱いので加圧乳化機とい
う特殊な装置を必要とし、しかも得られた乳化液
の長期安定性は十分とは言えない。本発明者等
は、より安定な脂溶性薬物の乳化液を製造すべく
研究した結果、レシチンと脂溶性薬物をエタノー
ルに溶解し、この溶液を水へ加えて乳化すれば安
定な乳化液が得られる事を見い出し本発明を完成
した。前記特開昭49−50124号公報には、場合に
よりレシチンをエタノールに溶解して用いる事が
記載されているが、本発明の構成とは異なつてい
る。該方法は植物油を必須成分とし、エタノール
は所望により乳化前に留去するのに対し、本発明
は植物油を用いなく、またエタノールも最後まで
除去しない。レシチン、エタノールを用いて脂溶
性薬物の乳化液を製造する際に、さらに植物油を
添加すると、かえつて乳化液の安定性が悪くなる
事を後述の実施例2において示した。 本発明は、脂溶性薬物1重量部およびレシチン
0.1〜10重量部をエタノール1〜50重量部に溶解
し、次いでこれを水に加えて乳化した脂溶性薬物
の乳化液である。さらに、乳化液の安定性の点か
ら、各成分の特に好ましい配合割合は、脂溶性薬
物1重量部に対し、レシチン0.2〜3重量部およ
びエタノール5〜20重量部である。 本発明の脂溶性薬物としては、例えば、フイト
ナジオン(ビタミンK1)、メナテトレノン(ビタ
ミンK2)、コエンザイムQ同族体、トコフエロー
ル類およびその誘導体、ゲフアルナートなどがあ
げられる。またレシチンとしては、大豆レシチ
ン、卵黄レシチンのいずれを用いても良い。 本発明において、脂溶性薬物およびレシチンを
エタノールに溶解した溶液を水に加えて乳化する
際には、従来のレシチンを用いた乳化の際に行な
つている加圧乳化機を用いた高せん断力下での乳
化は必要でなく、通常の撹拌乳化で十分に安定な
乳化液を得ることができる。 本発明において撹拌乳化を行なう際、脂溶性薬
物とレシチンのエタノール溶液を、単に水に添加
するのではなく、管を通して水中へ加圧注入する
方法を採れば、より粒径の微細な安定な乳化液を
得る事ができる。また、本発明に用いるレシチン
の一部を予め水に溶解して乳化を行なつても良
い。 本発明の乳化液の製造においては、必要によ
り、等張化剤、緩衝剤、溶解補助剤、他の乳化
剤、矯味剤、矯臭剤、防腐剤、安定化剤等をさら
に適宜配合する事ができる。 本発明の乳化液は、通常、調製時には平均0.5
μ以下の直径を持つ微細な乳化粒子から成り、加
熱滅菌に耐え、経時的な物理的安定性にすぐれて
いるものである。 次に実施例を示し、本発明をさらに詳しく説明
する。 実施例 1 表に示す脂溶性薬物、レシチン、エタノール、
その他の添加剤を55〜60℃の水浴上で加温溶解し
た。 これを同温度に加熱した5%ブドウ糖含有注射
用蒸留水中に添加して乳化し、全量100mlとし
た。乳化は、本発明試料1〜5は油相を水相に加
圧注入し、プロペラ式撹拌機を用いて300rpmで
5分間処理して行ない、対照試料6〜10は油相と
水相をT.K.ホモミキサー(商品名、特殊機化工
業K.K.)を用いて4000rpmで10分間処理して行
なつた。 得られた乳化液を、ミリポアフイルターを用い
て過した。 液をアンプルに分注して熔閉した後、100℃
で60分間加熱滅菌した。 上記方法で得られた乳化液、およびこれを室温
にて6ケ月放置したものについて、肉眼による観
察(外観)および電子顕微鏡による粒子径の観察
を行なつた。下記の表に示すように本発明の乳化
液は対照のものより安定性が優れている。
The present invention relates to a stable emulsion of a fat-soluble drug prepared using lecithin and ethanol. Conventionally, solubilized preparations containing large amounts of nonionic surfactants have been frequently used as liquid preparations for fat-soluble drugs, but recently the side effects of synthetic surfactants on the human body have become a problem. Therefore, the present inventors attempted to produce an emulsion-type preparation using lecithin, which is a natural substance and has relatively high safety, instead of a synthetic surfactant. As an example of emulsifying a fat-soluble drug using lecithin, there is an example of emulsifying gefalnate with lecithin (Japanese Unexamined Patent Application Publication No. 1989-1999).
126821), and an example in which vitamin E or its ester is emulsified using lecithin and vegetable oil (Japanese Patent Application Laid-Open No. 49-50124). but,
When emulsifying fat-soluble drugs using these methods, a special device called a pressure emulsifier is required because the emulsifying power of lecithin is weak, and the long-term stability of the resulting emulsion is not sufficient. . As a result of research to produce a more stable emulsion of fat-soluble drugs, the present inventors discovered that by dissolving lecithin and fat-soluble drugs in ethanol and emulsifying this solution by adding it to water, a stable emulsion can be obtained. He discovered that this could be done and completed the present invention. JP-A-49-50124 discloses that lecithin is used after being dissolved in ethanol in some cases, but this is different from the structure of the present invention. While this method uses vegetable oil as an essential component and ethanol is optionally distilled off before emulsification, the present invention does not use vegetable oil and does not remove ethanol to the end. It was shown in Example 2 below that when vegetable oil is further added when producing an emulsion of a fat-soluble drug using lecithin and ethanol, the stability of the emulsion worsens. The present invention provides 1 part by weight of a fat-soluble drug and lecithin.
An emulsion of a fat-soluble drug is obtained by dissolving 0.1 to 10 parts by weight in 1 to 50 parts by weight of ethanol, and then adding this to water to emulsify. Furthermore, from the viewpoint of stability of the emulsion, a particularly preferred blending ratio of each component is 0.2 to 3 parts by weight of lecithin and 5 to 20 parts by weight of ethanol per 1 part by weight of the fat-soluble drug. Examples of the fat-soluble drugs of the present invention include phytonadione (vitamin K 1 ), menatetrenone (vitamin K 2 ), coenzyme Q analogues, tocopherols and their derivatives, and gefalnate. Further, as the lecithin, either soybean lecithin or egg yolk lecithin may be used. In the present invention, when a solution of a fat-soluble drug and lecithin dissolved in ethanol is added to water and emulsified, high shear force is applied using a pressurized emulsifier, which is used in conventional emulsification using lecithin. Emulsification below is not necessary, and a sufficiently stable emulsion can be obtained by ordinary stirring emulsification. When performing stirring emulsification in the present invention, instead of simply adding the ethanol solution of the fat-soluble drug and lecithin to water, if a method is adopted in which the ethanol solution is injected under pressure into water through a tube, stable emulsification with finer particle size can be achieved. liquid can be obtained. Further, a part of the lecithin used in the present invention may be dissolved in water in advance and emulsified. In the production of the emulsion of the present invention, isotonic agents, buffers, solubilizing agents, other emulsifiers, flavoring agents, flavoring agents, preservatives, stabilizers, etc. can be further added as appropriate. . The emulsion of the present invention usually has an average of 0.5
It consists of fine emulsified particles with a diameter of less than μ, can withstand heat sterilization, and has excellent physical stability over time. EXAMPLES Next, the present invention will be explained in more detail with reference to Examples. Example 1 Fat-soluble drugs shown in the table, lecithin, ethanol,
Other additives were dissolved by heating on a water bath at 55-60°C. This was added to distilled water for injection containing 5% glucose heated to the same temperature and emulsified to make a total volume of 100 ml. Emulsification was carried out for samples 1 to 5 of the present invention by injecting the oil phase into the aqueous phase under pressure and treating it for 5 minutes at 300 rpm using a propeller stirrer, and for control samples 6 to 10, the oil phase and the aqueous phase were mixed at TK. The treatment was carried out using a homomixer (trade name, Tokushu Kika Kogyo KK) at 4000 rpm for 10 minutes. The resulting emulsion was passed through a Millipore filter. After dispensing the liquid into ampoules and melting them, heat them to 100℃.
sterilized by heating for 60 minutes. The emulsion obtained by the above method and the emulsion left at room temperature for 6 months were observed with the naked eye (appearance) and the particle size was observed with an electron microscope. As shown in the table below, the emulsion of the present invention has better stability than the control.

【表】【table】

【表】 実施例 2 レシチンおよびエタノールを用いてビタミンE
アセテートの乳化液を製造した。対照として、大
豆油を用いた例を示す。配合量および製造法を次
に示す。
[Table] Example 2 Vitamin E using lecithin and ethanol
An acetate emulsion was produced. As a control, an example using soybean oil is shown. The blending amount and manufacturing method are shown below.

【表】 本発明の処方および対照2の処方では、ビタミ
ンEアセテート、エタノール、卵黄レシチンおよ
び大豆油(対照2のみ)を55〜60℃で加温溶解
し、これを同温度のグリセリンを溶解した注射用
蒸留水中へ撹拌下(300rpm)に加圧注入して乳
化した。対照1および3の処方では、ビタミンE
アセテートと大豆油の混液に卵黄レシチンまたは
卵黄レシチンのエタノール溶液を加え、対照1で
はそのまま、対照3では50℃以下の減圧下でエタ
ノールを留去した後、グリセリンを溶解した注射
用蒸留水中へ撹拌下に加え、ホモミキサーで粗乳
化し、マントンガウリン加圧乳化機を用いて4000
ポンドの圧力で乳化した。 得られた各乳化液をミアポリフイルターで過
し、アンプルに分注して熔閉した後、100℃で60
分間加熱滅菌した。各乳化液の製造直後の状態、
および室温または40℃で保存後の安定性を調べ
た。結果を次の表に示す。
[Table] In the formulation of the present invention and the formulation of Control 2, vitamin E acetate, ethanol, egg yolk lecithin, and soybean oil (Control 2 only) were dissolved by heating at 55 to 60°C, and this was dissolved in glycerin at the same temperature. The mixture was injected into distilled water for injection under pressure and stirring (300 rpm) to emulsify. Controls 1 and 3 formulations contain vitamin E
Egg yolk lecithin or an ethanol solution of egg yolk lecithin was added to a mixture of acetate and soybean oil, and for Control 1, the ethanol was distilled off under reduced pressure at 50°C or less, and then stirred into distilled water for injection in which glycerin had been dissolved. Coarsely emulsify with a homo mixer, and use a Manton Gaulin pressure emulsifier to
Emulsified under pounds of pressure. Each emulsion obtained was filtered through a Mia Poly filter, dispensed into ampoules and melted, and then heated at 100℃ for 60 minutes.
Heat sterilized for minutes. The state of each emulsion immediately after production,
and the stability after storage at room temperature or 40°C was investigated. The results are shown in the table below.

【表】 実施例 3 メナテトレノン 4g 精製大豆レシチン 1g エタノール 36g マクロゴール400 50g ブドウ糖 50g注射用蒸留水 全量1000ml メナテトレノン、精製大豆レシチン、エタノー
ル、マクロゴール400を約60℃の水浴上で加温溶
解し油相とした。また、ブドウ糖を注射用蒸留水
に溶解し約60℃に加温して水相とした。油相を水
相へ撹拌下(300rpm)に加圧注入して乳化し
た。乳化液をミリポアフイルターで過し、アン
プルに分注して熔閉した後、100℃で60分間加熱
滅菌して注射剤とした。 実施例 4 天然トコフエロール濃縮物(大豆起原) 10 g 卵黄レシチン 1 g 大豆レシチン 2 g エタノール 40 g プロピレングリコール 30 g エチルパラペン 0.5g精製水 全量1000 ml 天然トコフエロール濃縮物、卵黄レシチン、エ
タノール、プロピレングリコールを約60℃の水浴
上で加温溶解し油相とした。一方、大豆レシチ
ン、エチルパラペンを精製水に溶解し、約70℃に
加温して水相とした。油相を水相へ撹拌下
(300rpm)に加圧注入して乳化液を得た。本乳化
液は天然トコフエロールの食品添加用の剤型とし
て好ましい。 実施例 5 ユビデカレノン 2 g 精製卵黄レシチン 0.5g ニツコールHCO−50(商標、日光ケミカルズ
社) 0.5g エタノール 32 g 氷酢酸 2 g キシリトール 25 g 0.1N水酸化ナトリウム 適量注射用蒸留水 全量1000 ml ユビデカレノン、精製卵黄レシチン、ニツコー
ルHCO−50、エタノール、氷酢酸を混合溶解
し、約40℃に加温して油相とした。一方、キシリ
トールを注射用蒸留水に溶解し、約45℃に加温し
て水相とした。油相を水相へ撹拌下(300rpm)
に加圧注入して乳化した。乳化液に0.1N水酸化
ナトリウムを加えてPH6.0に調整した。次いで、
ミリポアフイルターで過し、アンプルに分注し
て熔閉した後、100℃で60分間加熱滅菌して注射
剤とした。
[Table] Example 3 Menatetrenone 4g Purified soybean lecithin 1g Ethanol 36g Macrogol 400 50g Glucose 50g Distilled water for injection Total volume 1000ml Menatetrenone , purified soybean lecithin, ethanol, and Macrogol 400 were heated and dissolved in a water bath at about 60°C to make an oil. It was a phase. In addition, glucose was dissolved in distilled water for injection and heated to about 60°C to form an aqueous phase. The oil phase was injected into the water phase under pressure and stirring (300 rpm) to emulsify it. The emulsion was filtered through a Millipore filter, dispensed into ampoules and sealed, and then heat sterilized at 100°C for 60 minutes to prepare an injection. Example 4 Natural tocopherol concentrate (soybean origin) 10 g Egg yolk lecithin 1 g Soybean lecithin 2 g Ethanol 40 g Propylene glycol 30 g Ethylparapen 0.5 g Purified water Total volume 1000 ml Natural tocopherol concentrate, egg yolk lecithin, ethanol, propylene glycol was dissolved by heating on a water bath at about 60°C to form an oil phase. On the other hand, soybean lecithin and ethyl paraben were dissolved in purified water and heated to about 70°C to form an aqueous phase. The oil phase was injected into the water phase under pressure and stirring (300 rpm) to obtain an emulsion. This emulsion is preferable as a food additive formulation of natural tocopherols. Example 5 Ubidecarenone 2 g Purified egg yolk lecithin 0.5 g Nitsukor HCO-50 (trademark, Nikko Chemicals) 0.5 g Ethanol 32 g Glacial acetic acid 2 g Xylitol 25 g 0.1N sodium hydroxide Appropriate amount Distilled water for injection Total volume 1000 ml Ubidecarenone, purified Egg yolk lecithin, Nikkol HCO-50, ethanol, and glacial acetic acid were mixed and dissolved, and heated to about 40°C to form an oil phase. On the other hand, xylitol was dissolved in distilled water for injection and heated to about 45°C to form an aqueous phase. Stirring the oil phase into the water phase (300 rpm)
was injected under pressure to emulsify. 0.1N sodium hydroxide was added to the emulsion to adjust the pH to 6.0. Then,
The mixture was passed through a Millipore filter, dispensed into ampoules and melted, and then heat sterilized at 100°C for 60 minutes to prepare an injection.

Claims (1)

【特許請求の範囲】 1 脂溶性薬物1重量部およびレシチン0.1〜10
重量部をエタノール1〜50重量部に溶解し、次い
でこれを水に加えて乳化した脂溶性薬物の乳化
液。 2 脂溶性薬物1重量部に対し、レシチン0.2〜
3重量部およびエタノール5〜20重量部を用い
る、特許請求の範囲第1項記載の乳化液。
[Claims] 1. 1 part by weight of a fat-soluble drug and 0.1 to 10 parts of lecithin
An emulsion of a fat-soluble drug prepared by dissolving 1 to 50 parts by weight of ethanol and then adding the same to water to emulsify. 2 Lecithin 0.2 to 1 part by weight of fat-soluble drug
3 parts by weight and 5 to 20 parts by weight of ethanol, the emulsion according to claim 1.
JP13043576A 1976-11-01 1976-11-01 Emulsified solution of fat soluble drugs Granted JPS5356315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13043576A JPS5356315A (en) 1976-11-01 1976-11-01 Emulsified solution of fat soluble drugs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13043576A JPS5356315A (en) 1976-11-01 1976-11-01 Emulsified solution of fat soluble drugs

Publications (2)

Publication Number Publication Date
JPS5356315A JPS5356315A (en) 1978-05-22
JPS6139924B2 true JPS6139924B2 (en) 1986-09-06

Family

ID=15034156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13043576A Granted JPS5356315A (en) 1976-11-01 1976-11-01 Emulsified solution of fat soluble drugs

Country Status (1)

Country Link
JP (1) JPS5356315A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775916A (en) * 1980-10-29 1982-05-12 Nippon Chemiphar Co Ltd Coenzyme q pharmaceutical and its preparation
JPS57209216A (en) * 1981-06-19 1982-12-22 Daigo Eiyou Kagaku Kk Compound fat-soluble vitamin injection capable of being medicated by venoclysis and its preparation
JPS588010A (en) * 1981-07-08 1983-01-18 Eisai Co Ltd Ubidecarenone-containing ribosome
JPS58113127A (en) * 1981-12-28 1983-07-05 Ajinomoto Co Inc Aqueous solution containing ubidecarenone
JPS58162517A (en) * 1982-03-19 1983-09-27 Green Cross Corp:The Fat-soluble vitamin-containing fatty emulsion
JPS5910511A (en) * 1982-07-07 1984-01-20 Eisai Co Ltd Aqueous solution containing fat-soluble substance
SE8206744D0 (en) * 1982-11-26 1982-11-26 Fluidcarbon International Ab PREPARATION FOR CONTROLLED RELEASE OF SUBSTANCES
JPS6025918A (en) * 1983-07-25 1985-02-08 Ajinomoto Co Inc Aqueous solution containing fat-soluble drug
JPS6051104A (en) * 1983-08-30 1985-03-22 Ajinomoto Co Inc Vitamin e-containing aqueous solution
NO157596C (en) * 1983-12-16 1988-09-27 Alf Lange DEVICE FOR PRESENTATION OF INFORMATION.
CH661438A5 (en) * 1984-04-09 1987-07-31 Seuref Ag Pharmaceutical compositions acting antianossica and metabolic brain.
JPS63188624A (en) * 1987-01-29 1988-08-04 Maruzen Kasei Kk Vitamin e-containing aqueous solution
CA1323306C (en) * 1987-03-05 1993-10-19 Mircea C. Popescu Pharmacological agent-lipid solution preparation
US5154930A (en) * 1987-03-05 1992-10-13 The Liposome Company, Inc. Pharmacological agent-lipid solution preparation
JP2521467B2 (en) * 1987-04-17 1996-08-07 株式会社コーセー Translucent lotion
US5376381A (en) * 1988-02-25 1994-12-27 The Liposome Company, Inc. Integrity protected gelatin
CA1339029C (en) * 1988-06-20 1997-04-01 Hiroyuki Kakoki Transparent composition
JPH0681739B2 (en) 1988-07-11 1994-10-19 エーザイ株式会社 Aqueous liquid containing fat-soluble vitamin K
WO1992007571A1 (en) * 1990-11-06 1992-05-14 Nippon Shinyaku Co., Ltd. Process for producing fat emulsion
US5534502A (en) * 1990-11-06 1996-07-09 Nippon Shinyaku Co. Ltd. Process for producing fat emulsion
JP3742602B2 (en) * 2001-05-09 2006-02-08 株式会社カネカ Stable solution of reduced coenzyme Q
US8080097B2 (en) 2003-11-06 2011-12-20 Hewlett-Packard Development Company, L.P. System and a method for the creation of edible, optically invisible images
JP5103608B2 (en) * 2006-02-10 2012-12-19 国立大学法人名古屋大学 Pharmaceutical composition for treatment or prevention of liver cancer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB122967A (en) * 1918-04-04 1919-02-13 Herbert William Hole Improvements in Pencil Sharpeners.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB122967A (en) * 1918-04-04 1919-02-13 Herbert William Hole Improvements in Pencil Sharpeners.

Also Published As

Publication number Publication date
JPS5356315A (en) 1978-05-22

Similar Documents

Publication Publication Date Title
JPS6139924B2 (en)
NO844144L (en) PHARMACEUTICAL PREPARATION
JP4929158B2 (en) Pharmaceutical composition containing poorly water-soluble drug
JPS63150221A (en) Emulsified composition containing crystalline drug
EP0866117A1 (en) Microemulsion
WO1998047486A1 (en) Microemulsion
JPH0441125B2 (en)
JPS62419A (en) Water-soluble agent containing fat-soluble vitamin
DE1467907C3 (en) Process for the production of soft gelatine capsules
JP4810129B2 (en) Non-aqueous emulsion composition
JPH1149664A (en) Microemulsion
JPH09241152A (en) Oil-in-water emulsion
JP2543708B2 (en) Method for producing emulsion formulation encapsulating poorly soluble drug
KR20150030971A (en) oil-in water emulsion composition of the water-insoluble pharmaceutical compounds and the method for preparing the same
JPH047722B2 (en)
JPS60258110A (en) Progesterone emulsified parenteral solution injectable intravenously
JPH0518806B2 (en)
JP3508314B2 (en) Liquid formulation containing vitamin C
JPH0145446B2 (en)
JP2828655B2 (en) Fat-soluble drug-containing aqueous liquid
JPH01143826A (en) Fat emulsion of fine particle
JP2014162734A (en) Method for the production of peptide-containing soft capsule
JP2022007717A (en) Water-in-oil emulsion composition for external use
JPS6014933A (en) Preparation of w/o type emulsion
JPH0422886B2 (en)