JPWO2020162103A1 - ゲル状組成物の製造方法 - Google Patents
ゲル状組成物の製造方法 Download PDFInfo
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- JPWO2020162103A1 JPWO2020162103A1 JP2020571050A JP2020571050A JPWO2020162103A1 JP WO2020162103 A1 JPWO2020162103 A1 JP WO2020162103A1 JP 2020571050 A JP2020571050 A JP 2020571050A JP 2020571050 A JP2020571050 A JP 2020571050A JP WO2020162103 A1 JPWO2020162103 A1 JP WO2020162103A1
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- phospholipid
- cyclic lipopeptide
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Abstract
Description
そこで本発明は、リン脂質を含むものでありながら乳化安定性に優れたゲル状組成物を簡便に製造することができる方法、使用感と乳化安定性に優れた乳化組成物を簡便に製造することができる方法、乳化安定性に優れたゲル状組成物、および、使用感と乳化安定性に優れた乳化組成物を提供することを目的とする。
以下、本発明を示す。
リン脂質と環状リポペプチドバイオサーファクタントを多価アルコールまたは水と多価アルコールの混合溶媒に溶解して界面活性剤溶液を得る工程、および、
油性成分を前記界面活性剤溶液と混合して前記ゲル状組成物を得る工程を含み、
前記ゲル状組成物において、前記リン脂質に対する前記環状リポペプチドバイオサーファクタントの質量比が0.25以上であることを特徴とする方法。
上記[1]〜[6]のいずれかに記載の方法によりゲル状組成物を製造する工程、および、
前記ゲル状組成物を水系溶媒中に分散させる工程を含むことを特徴とする方法。
前記リン脂質に対する前記環状リポペプチドバイオサーファクタントの質量比が0.25以上であることを特徴とするゲル状組成物。
前記リン脂質に対する前記環状リポペプチドバイオサーファクタントの質量比が0.25以上であることを特徴とする乳化組成物。
本工程では、リン脂質と環状リポペプチドバイオサーファクタントを多価アルコールまたは水と多価アルコールの混合溶媒に溶解して界面活性剤溶液を得る。
C8-24アルケニル基は、炭素数が8以上、24以下であり、少なくとも一つの炭素−炭素二重結合を有する直鎖状または分枝鎖状の一価不飽和脂肪族炭化水素基をいう。
C8-24アルキニル基は、炭素数が8以上、24以下であり、少なくとも一つの炭素−炭素三重結合を有する直鎖状または分枝鎖状の一価不飽和脂肪族炭化水素基をいう。
本工程では、上記工程1で得た界面活性剤溶液と油性成分を混合することによりゲル状組成物を得る。なお、ゲル状組成物とは、3000mPa・s以上の粘度を有するものをいい、粘度はJIS Z 8803:2011に準じて測定するものとする。
次に、本発明に係る乳化組成物の製造方法を、具体例を挙げつつ説明するが、本発明は以下の態様に限定されるものではない。本工程では、上記工程2で得たゲル状組成物を水系溶媒中に分散させることにより、乳化組成物を得る。
表1に示す質量割合で、サーファクチンナトリウムと水添レシチン(辻製油社製)をグリセリンに添加し、常温で攪拌して溶解した。得られた溶液を、攪拌棒を使って人手でゆっくり常温で攪拌しながらスクワランを徐々に添加し、ゲル状組成物を得た。
次に、表1に示す質量割合で、精製水にゲル状組成物を添加し、常温で攪拌棒を使って人手でゆっくり攪拌し、完全に均一分散することによって、乳化組成物を得た。
表1に示す質量割合で、水添レシチン(辻製油社製)のみをグリセリンに添加し、常温で攪拌して溶解した。得られた溶液を、攪拌棒を使って人手でゆっくり常温で攪拌して完全に均一分散させ、スクワランを徐々に添加し、ゲル状組成物を得た。
次に、表1に示す質量割合で、精製水にゲル状組成物を添加し、常温で攪拌棒を使って人手でゆっくり攪拌し、完全に均一分散することによって、乳化組成物を得た。
6名の被験者に、実施例1〜5と比較例1の乳化組成物約1gを上腕部内側、手首内側、または手の甲に塗布してもらい、以下の使用感を5段階で評価してもらった。結果を表2に示す。なお、「やわらかさ」とは、塗布により肌の表面がやわらかくなったような感触をいう。
実施例1〜5および比較例1の乳化組成物を50℃で3日間静置した後、外観を観察し、以下の基準で乳化安定性を評価した。結果を表3に示す。
〇: 乳化状態が維持されていた場合
×: 乳化状態が崩れて油分が分離した場合
本発明に係る乳化組成物の安定性が優れているのは、界面活性剤としてリン脂質に加えてサーファクチンを含んでおり、サーファクチンがその側鎖カルボキシ基間の水素結合相互作用により網目構造を形成するので、油性成分割合が比較的小さい場合であっても、油性成分が当該網目構造中に分散されて安定化するためであると考えられる。
表4に示す質量割合で、サーファクチンナトリウムと水添レシチン(辻製油社製)または水添レシチンのみをグリセリンに添加し、常温で攪拌して溶解した。
一方、水添レシチンに加えてサーファクチンナトリウムをサーファクチンナトリウム/水添レシチン≧0.25の割合で含む実施例6〜10の組成物には十分量のスクワランを分散させることができ、十分量のスクワランを含むゲル状組成物が得られた。
Claims (9)
- ゲル状組成物を製造するための方法であって、
リン脂質と環状リポペプチドバイオサーファクタントを多価アルコールまたは水と多価アルコールの混合溶媒に溶解して界面活性剤溶液を得る工程、および、
油性成分を前記界面活性剤溶液と混合して前記ゲル状組成物を得る工程を含み、
前記ゲル状組成物において、前記リン脂質に対する前記環状リポペプチドバイオサーファクタントの質量比が0.25以上であることを特徴とする方法。 - 前記リン脂質が、ホスファチジルコリン、水添レシチン、ホスファチジン酸、ビスホスファチジン酸、ホスファチジルエタノールアミン、ホスファチジルメチルエタノールアミン、ホスファチジルセリン、ホスファチジルイノシトール、ホスファチジルグリセロール、ジホスファチジルグリセロール、およびスフィンゴミエリンから選択される1以上のリン脂質である請求項1に記載の方法。
- 前記環状リポペプチドバイオサーファクタントが、サーファクチン、アルスロファクチン、イチュリン、およびそれらの塩から選択される1以上の環状リポペプチドバイオサーファクタントである請求項1または2に記載の方法。
- 前記ゲル状組成物における前記リン脂質と前記環状リポペプチドバイオサーファクタントとの合計の割合が0.01質量%以上、10質量%以下である請求項1〜3のいずれかに記載の方法。
- 前記ゲル状組成物における前記油性成分の割合が1質量%以上、90質量%以下である請求項1〜4のいずれかに記載の方法。
- 前記ゲル状組成物における前記油性成分の割合が1質量%以上、50質量%未満である請求項1〜4のいずれかに記載の方法。
- 乳化組成物を製造するための方法であって、
請求項1〜6のいずれかに記載の方法によりゲル状組成物を製造する工程、および、
前記ゲル状組成物を水系溶媒中に分散させる工程を含むことを特徴とする方法。 - リン脂質と環状リポペプチドバイオサーファクタントを含み、
前記リン脂質に対する前記環状リポペプチドバイオサーファクタントの質量比が0.25以上であることを特徴とするゲル状組成物。 - リン脂質、環状リポペプチドバイオサーファクタント、および水系溶媒を含み、
前記リン脂質に対する前記環状リポペプチドバイオサーファクタントの質量比が0.25以上であることを特徴とする乳化組成物。
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