JP4025461B2 - Skin cosmetics - Google Patents

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Publication number
JP4025461B2
JP4025461B2 JP11340399A JP11340399A JP4025461B2 JP 4025461 B2 JP4025461 B2 JP 4025461B2 JP 11340399 A JP11340399 A JP 11340399A JP 11340399 A JP11340399 A JP 11340399A JP 4025461 B2 JP4025461 B2 JP 4025461B2
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Prior art keywords
skin
raspberry
effect
ethanol
cosmetic
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JP11340399A
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Japanese (ja)
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JP2000302663A (en
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朋宏 横田
毅 池本
弘子 中津川
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、皮膚化粧料に関し、詳しくは、紫外線曝露等による皮膚の炎症、黒化を抑制する効果と、肌の色黒、しみ、そばかす等の皮膚色調変化の改善効果とに優れ、安全性が高く、保存安定性及び使用感の優れた皮膚化粧料を提供するものである。
【0002】
【従来の技術】
皮膚に紫外線が暴露されると、それにより皮膚が種々の影響を受ける。その際皮膚内で発生する活性酸素、過酸化脂質等は、炎症を引き起こし、皮膚組織に大きなダメージを与える。これらのダメージは、皮膚の潤いやつや、きめ等を失わせ、更にその影響が真皮に及び、シワ等が形成され光加齢の原因となる。また、紫外線以外にも多くの環境因子(大気汚染、ストレス、化学的、物理的刺激等)によって周辺細胞から放出される種々の因子により、色素細胞(メラノサイト)が活性化されることも知られている。
【0003】
メラノサイトが活性化されると、チロシナーゼ活性が高まりメラニンが過剰に作られ、それが表皮細胞に受け渡され、結果、皮膚の色調は変化し黒化するとされている。
【0004】
係る状況下、炎症を起こしダメージを受けた皮膚組織においては、過剰に産生されたメラニンを正常に代謝することが困難になっており、より皮膚の黒化の度合いは大きくなり兼ねない。
【0005】
したがって、美白効果を示すためには、チロシナーゼの活性を抑え、メラニン生成を抑制することが重要である。また、紫外線曝露等により生じる活性酸素や過酸化脂質等による炎症反応を抑制して皮膚のダメージを緩和し、皮膚の状態を正常に保つことは、光加齢防止等に重要な役割を果たすと考えられる。
【0006】
従来、皮膚の黒化やしみ、そばかすを防ぎ本来の白い肌を保つために、コウジ酸、アルブチン、ハイドロキノンモノベンジルエーテル、過酸化水素等を配合した美白化粧料が提案されている。また、紫外線により炎症を抑制するために、ビタミンC等を配合した化粧料も提案されている。
【0007】
アルブチン、コウジ酸、ハイドロキノンモノベンジルエーテル等を配合すると、若干色黒の肌を淡色化する効果はあるが、望むレベルではない。また、紫外線等により生じる皮膚のダメージへの緩和作用はなく、皮膚の安全性上に問題がある場合があったり、十分な安定性も得られない場合があった。ビタミンC等は美白効果及び抗炎症効果を有するが、効果の程度及び安定性の面で改善すべき余地が多くの残っている。この様に、皮膚の炎症抑制効果によるダメージ緩和作用を有し、美白効果に優れ且つ皮膚安全性が高く、保存安定性が良好である皮膚化粧料を得ることは困難を極めている。
【0008】
【発明が解決しようとする課題】
係る状況下、本発明の目的とするところは、炎症抑制効果、美白効果に優れ、製剤中での安定性が高く、皮膚安全性及び使用感の優れた皮膚化粧料を提供するにある。
【0009】
【課題を解決するための手段】
本発明者等は、このような状況に鑑み、従来技術の難点を改良せんとして鋭意研究を重ねた結果、ラズベリー抽出物は格段に優れた炎症抑制効果を有することを見出した。そして、既に本発明者等が、その美白化粧料への応用について提案を行なっている優れた美白効果の有するラズベリーケトン−β−D−グルコシド(特開平10−17462号公報)と併用することにより、紫外線暴露等による炎症及び黒化抑制効果、肌の色黒、しみ、そばかす等の皮膚色調変化の改善に対する有効性が相乗効果により飛躍的に高まることを見いだした。また、使用感の優れた皮膚化粧料となることも見いだし、本発明の完成に至った。
【0010】
即ち、本発明は、ラズベリー果実を極性有機溶媒で抽出して得られるラズベリー抽出物を乾固物換算で、0.001〜5.0重量%と、ラズベリーケトン−β−D−グルコシド0.05〜10.0重量%とを含有する皮膚化粧料であって、前記極性有機溶媒が水、メタノール、エタノール、n−プロパノール、i−プロパノール、1,3−ブチレングリコール、プロピレングリコール、アセトン、ジエチルエーテル、酢酸エチルから選ばれる単独、又は2種以上の組み合わせであることを特徴とする皮膚化粧料にある。
【0011】
【発明の実施の形態】
以下、本発明の実施形態について記述する。
【0012】
本発明に係るラズベリーとは、バラ科(Rosaceae)、キイチゴ属(Rubus)のうち、果樹として栽培されているキイチゴ類を指す。ラズベリー抽出物は、ラズベリーの果実極性有機溶媒抽出によって抽出した物を使用する。用いる極性有機溶媒の種類としては、例えば水や、メタノール、エタノール、n−プロパノール、i−プロパノールその他の低級アルコール、1,3−ブチレングリコール、プロピレングリコールその他の低級多価アルコール、アセトン等の低級ケトン、ジエチルエーテル等の低級エーテル、酢酸エチル等を挙げることができる。これらは単独でも、2種以上を組合わせて用いてもよい。また、ラズベリーの果実を圧搾してジュースを製造する際の果実残渣を利用することも可能である。これにより、これまで廃棄していた残渣を有効利用が可能となる。
【0013】
好ましい抽出法は、破砕したラズベリー果実残渣に重量で5〜20倍のメタノール、エタノール等のアルコール類その他の極性有機溶媒を添加して、室温で撹拌抽出する。抽出処理終了後、不溶性固形分を分離除去して濾過を行い、濾液は濃縮し濃縮液を得る。このようにして得られる濃縮液をそのまま用いることもできるが、この濃縮液を更に精製して使用するのが好ましい。精製手段としては、通常行われている方法でよく、好ましいものとして、例えば、セパビーズSP−207(三菱化学社製)ダイヤイオンHP20(三菱化学社製)等の多孔性樹脂と濃縮液を接触させる樹脂吸着精製法等を挙げることができる。樹脂に吸着された有効成分はエタノール等で溶出させ、溶出液を濃縮することにより、本発明に係るラズベリー抽出物とすることができる。
【0014】
ラズベリー抽出物の本発明の皮膚化粧料中への配合量は、化粧料総量を基準として乾固物換算で、0.001〜5.0重量%(以下wt%とする)であり、好ましくは、0.1〜2.0wt%である。
【0015】
ラズベリー抽出物の配合量が0.001wt%未満では本発明の目的とする効果に充分ではなく、ラズベリー抽出物の配合量が5.0wt%を越えても、その増加分に見合った効果の向上は望めなく、使用時の感触が悪くなり易く、個々の剤型を保持し難くなる。
【0016】
本発明に係る皮膚化粧料中へのラズベリーケトン−β−D−グルコシドの配合量は、化粧料総量を基準として、0.05〜10.0wt%である。そして好ましくは、0.1〜3.0wt%である。
【0017】
ラズベリーケトン−β−D−グルコシドの配合量が0.05wt%未満では本発明の目的とする効果に充分ではなく、ラズベリー抽出物の配合量が10.0wt%を越えても、その増加分に見合った効果の向上は望めず、使用時の感触が悪くなり易く、個々の剤型を保持し難くなる。
【0018】
本発明に係る皮膚化粧料は、一般に皮膚に塗布する形の化粧料の他、入浴剤として用いても良い。剤型としては、一般に用いられる、水溶液、W/O型又はO/W型エマルジョン、適当な腑形剤等を用いて顆粒剤その他の粉末、錠剤等とすることが考えられ、具体的には、クリーム、乳液、化粧水、パック、ジェル、スティック、シート、パップ等が挙げられる。この皮膚化粧料は、例えば乳液等の場合、油相及び水相をそれぞれ加熱溶解したものを乳化分散して冷却する通常の方法により製造することができる。
【0019】
尚、本発明に係る皮膚化粧料には、上記原料の他にタール系色素、酸化鉄等の着色顔料、パラベン等の防腐剤、脂肪酸セッケン、セチル硫酸ナトリウム等の陰イオン性界面活性剤、ポリオキシエチレンアルキルエーテル、ポリオキシエチレン脂肪酸エステル、ポリオキシエチレン多価アルコール脂肪酸エステル、ポリオキシエチレン硬化ヒマシ油、多価アルコール脂肪酸エステル、ポリグリセリン脂肪酸エステル等の非イオン性界面活性剤、テトラアルキルアンモニウム塩等の陽イオン性界面活性剤、ベタイン型、スルホベタイン型、スルホアミノ酸型、N−ステアロイル−L−グルタミン酸ナトリウム等の両イオン性界面活性剤、レシチン、リゾフォスファチジルコリン等の天然系界面活性剤、ゼラチン、カゼイン、デンプン、アラビアガム、カラヤガム、グアガム、ローカストビーンガム、ドラガカントガム、クインスシード、ペクチン、カラーギナン、アルギン酸ソーダ等の天然高分子、メチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロース、カルボキシメチルセルロースナトリウム、エチルセルロース等の半合成高分子、ポリビニルアルコール、ポリビニルメチルエーテルおよびコーポリマー、ポリビニルピロリドン、ポリアクリル酸ソーダ、カルボキシビニルポリマー、ポリエチレンオキシドポリマー等の合成高分子、キサンテンガム等の増粘剤、酸化チタン等の顔料、ジブチルヒドロキシトルエン等の抗酸化剤等を、本発明の目的を達成する範囲内で適宜配合することができる。
【0020】
【実施例】
以下、製造例、実施例及び比較例に基づいて本発明を詳細に説明する。尚、本発明は、以下の実施例に何ら限定されるものではない。
【0021】
製造例1(ラズベリー抽出物の製造例)
ラズベリー果実破砕物100gに酢酸エチル750gを加えて、室温で約1時間攪拌抽出した。濾紙で濾過を行い、不溶性固形分を除去して、抽出液15gを得た。次いで、この抽出液を多孔性樹脂・セパビーズSP−207[商品名、三菱化学社製]100mlを充填したカラム中に徐々に流した。次いで、樹脂を十分に水洗した後、50%エタノール水溶液150gを流して、樹脂に吸着した物質を溶出させた。得られた溶出液を減圧濃縮後、乾燥することによりラズベリー抽出物(乾固物)6.5gを得た。
【0022】
製造例2[ラズベリーケトン−D−グルコシド(β体)の合成法]
40mlの脱水トルエンに2.76gのラズベリーケトン、8gのグルコースペンタアセテート、モレキュラーシーブス2gを入れ、室温下に約1時間撹拌した後、3フッ素化ジエチルエーテル溶液1mlを加え、更に、3時間撹拌した。20mlの水を加えた後、モレキュラーシーブスを濾別した。濾液から酢酸エチルにて、有機層を抽出した。酢酸エチル層を1N水酸化ナトリウムにて洗浄し、未反応のラズベリーケトンを除去した。酢酸エチル層を精製水にて洗浄した後、硫酸ナトリウムにて乾燥した。硫酸ナトリウムを除去した後、減圧下、有機溶媒を除去することにより、ラズベリーケトンテトラアセチルグルコシドを得た。
【0023】
ラズベリーケトンテトラアセチルグルコシドを常法により、ナトリウムメトキシドを用いて、脱アセチル化をした後、イオン交換樹脂(アンバーライト;オルガノ社製)を用いて中和した。イオン交換樹脂を濾別した後、減圧下、溶媒を除去することにより、ラズベリーケトン−D−グルコシド(β体)3.4gを得た。
【0024】
上記製造例で得たラズベリー抽出物、ラズベリーケトン−β−D−グルコシドを用いて諸試験を実施した。以下、ラズベリーケトン−β−D−グルコシドをRKβG、ラズベリー抽出物をRFEXと略記する。
【0025】
実施例1〜3、比較例1〜3
(1)メラニン生成抑制試験
B16メラノーマ細胞(3×105個)を75cm2フラスコに播き、100μg/ml〜10mg/ml試料濃度の20%エタノール溶液100μlを加えた10%FBS−DMEM培地10mlで、37℃、5%CO2雰囲気下、72時間培養を行った。培養終了後、PBSで洗浄、トリプシン−EDTAで、細胞を剥がし、遠心し細胞を採集した。得られた細胞を、5%TCA,エタノール−エーテル=3:1、エーテルで処理した。更に、ソルエン350で溶解し、分光光度計を用いて、波長400nmにて吸光度を測定した。一方、試料溶液の代わりに20%エタノールのみを加えたものの吸光度を100として、その阻害率(%)を求めた。
【0026】
(2)活性酸素生成抑制試験(NBT法)
0.05M炭酸ナトリウム緩衝液(pH10.2)2.4ml、3mMキサンチン0.1ml、3mM EDTA0.1ml、0.15%牛血清アルブミン0.1ml、0.75mMニトロブルーテトラゾリウム0.1mlの組成中に、30μg/ml〜3mg/ml試料濃度の20%エタノール溶液を0.1ml加え、25℃、10分加温する。そこにバターミルク由来の250倍希釈キサンチンオキシダーゼ(シグマ社製)0.1mlを加え、25℃、20分間反応する。6mM塩化銅0.1ml加え、反応を停止して分光光度計を用いて波長560nmにて吸光度を測定した。試料溶液の代わりに、20%エタノールを0.1ml加えたものの吸光度を、100として、抑制率(%)を求めた。
【0027】
(3)過酸化脂質生成抑制試験(TBA法)
リノール酸メチル0.3ml、1mMヒポキサンチン(0.1%Triton X-100含む)3.0ml、10μg/ml〜1mg/ml試料濃度の20%エタノール溶液0.4ml、蒸留水0.15ml、バターミルク由来の20倍希釈キサンチンオキシダーゼ(シグマ社製)0.15mlの混合溶液を37℃、24時間振盪反応する。上記組成物0.3mlに10%リンタングステン酸0.5ml、0.67%チオバルビツール酸1.0mlを加え攪拌後、95〜100℃、30分間加熱後、急冷してn−ブタノールを加え振盪攪拌後、遠心(3000rpm、10分)を行い、上清を分光光度計を用いて波長535nmにて吸光度を測定した。試料溶液の代わりに20%エタノール0.4ml加えたもの吸光度をコントロールとして、コントロールに対する抑制率(%)を求めた。
【0028】

Figure 0004025461
【0029】
諸試験を実施した結果を表1に記載した。表1に示す如く、比較1〜3に比して、本発明である実施例1〜3の皮膚化粧料は諸試験の総てにおいて明らかに良好な結果を示した。
【0030】
実施例4〜6、比較例4〜6(スキンローション)
後述の皮膚化粧料(スキンローション)において実施した各種試験;(4)紫外線紅斑抑制試験、(5)紫外線色素沈着抑制試験、(6)美白実用試験は、次の通りである。
【0031】
(4)紫外線紅斑抑制試験
除毛したハートレー系モルモット10匹の背部皮膚に、スキンローション塗布部位とベース(スキンローションよりB及びC成分を除いたもの)塗布部位を設定して、UVB領域紫外線の最小紅斑量の2倍を各2ヶ所ずつ照射を行った。照射24時間前と照射直後にスキンローション又はベースを塗布し、塗布24時間後に紅斑の状態を下記判定基準に従い判定し、平均点により評価を行った。
【0032】
Figure 0004025461
【0033】
(5)紫外線色素沈着抑制試験
除毛したA1系モルモット(6週齢、メス)10匹の背部皮膚にUVB領域紫外線の最小紅斑量を、スキンローション塗布部位とベース(スキンローションよりB及びC成分を除いたもの)塗布部位を設定して、2ヶ所(2cm×2cm)に3日間連続照射を行った。照射直後から3週間スキンローション又はベースを1日2回塗布し、3週間後に色素沈着の状態を下記判定基準に従い評価を行った。
【0034】
Figure 0004025461
【0035】
(6)美白実用試験
夏期の太陽光に3時間(1日1.5時間で2日間)曝された被試験者20名の前腕屈側部皮膚を対象として、左前腕屈側部皮膚には太陽光に曝された日よりスキンローションを、右前腕屈側部皮膚には太陽光に曝された日よりベースを朝夕1回ずつ13週連続塗布した。
【0036】
尚、評価はベース塗布部より試料塗布部の効果を確認された被験者の人数で示した。更に、紫外線による肌ダメージの緩和作用についても同時に評価した。
【0037】
表2の原料組成において、表3に記載の如く有効成分を配合して、スキンローションを調製し、前記の諸試験を実施した。
【0038】
(1)調製法
表2に記載のC成分をD成分中に、B成分をA成分に均一に溶解した後、A成分とD成分を均一に混合攪拌、分散し次いで容器に充填した。
【0039】
Figure 0004025461
【0040】
Figure 0004025461
【0041】
諸試験を実施した結果を上記表3に記載した。表3に示す如く、比較例4〜6は諸試験において良好な結果は示さなかった。
【0042】
実施例4〜6の本発明の皮膚化粧料であるスキンローションは、諸試験の総てにおいて明らかに良好な結果を示した。尚、美白実用試験でヒト皮膚における皮膚刺激は生じなかった。
【0043】
実施例7〜9、比較例7〜9(スキンクリーム)
表4の原料組成において、表5に記載の有効成分を配合して、スキンクリームを調製し、前記の諸試験を実施した。
【0044】
(1)調製法
表4に記載のB成分とA成分に混合したものと、C成分をD成分に混合したものとを、それぞれ均一に加熱溶解して温度を80℃にする。次いで、A成分中にD成分を注入乳化した後、攪拌しながら30℃まで冷却する。
【0045】
Figure 0004025461
【0046】
Figure 0004025461
【0047】
諸試験を実施した結果を上記表5に記載した。表5に示す如く、比較例7〜9は諸試験において良好な結果は示さなかった。
【0048】
実施例7〜9は、諸試験の総てにおいて明らかに良好な結果を示し、ヒト皮膚での諸試験において良好な結果を示した。尚、美白実用試験でヒト皮膚における皮膚刺激は生じなかった。
【0049】
【発明の効果】
以上記載の如く、本発明に係る、ラズベリー抽出物を乾固物換算で、0.001〜5.0wt%と、ラズベリーケトン−β−D−グルコシド0.05〜10.0wt%とを含有することを特徴とする皮膚化粧料は、肌の色黒、しみ、そばかす等の皮膚色調変化の改善に有効であり、安全性の高い皮膚化粧料を提供するものである。また、紫外線暴露等により生じる炎症による皮膚のダメージ、色黒等を緩和して、皮膚の状態を正常に保つ作用も併せもっている。更に、皮膚刺激が無い等、使用感に優れた皮膚化粧料として有用である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a skin cosmetic, and in particular, is excellent in the effect of suppressing skin inflammation and blackening due to exposure to ultraviolet rays and the like, and the effect of improving skin color tone changes such as skin darkness, blotches and freckles, and safety. Therefore, the present invention provides a skin cosmetic that is high in storage stability and use feeling.
[0002]
[Prior art]
When ultraviolet rays are exposed to the skin, the skin is affected in various ways. At that time, active oxygen, lipid peroxide, and the like generated in the skin cause inflammation and cause great damage to the skin tissue. These damages cause loss of moisture, texture, texture, etc. of the skin, and further affect the dermis, forming wrinkles and causing photoaging. It is also known that pigment cells (melanocytes) are activated by various environmental factors (air pollution, stress, chemical, physical stimulation, etc.) other than ultraviolet rays that are released from surrounding cells. ing.
[0003]
When melanocytes are activated, tyrosinase activity increases and melanin is produced in excess, which is delivered to epidermal cells, resulting in a change in skin tone and blackening.
[0004]
Under such circumstances, in the skin tissue that is inflamed and damaged, it is difficult to normally metabolize the excessively produced melanin, and the degree of skin darkening may be increased.
[0005]
Therefore, in order to show the whitening effect, it is important to suppress the activity of tyrosinase and suppress the production of melanin. In addition, suppressing inflammation reaction caused by active oxygen and lipid peroxide caused by UV exposure, etc. to alleviate skin damage and keep the skin in a normal state plays an important role in preventing photoaging. Conceivable.
[0006]
Conventionally, whitening cosmetics containing kojic acid, arbutin, hydroquinone monobenzyl ether, hydrogen peroxide and the like have been proposed in order to prevent skin darkening, blemishes and freckles and keep the original white skin. In addition, cosmetics containing vitamin C and the like have been proposed in order to suppress inflammation by ultraviolet rays.
[0007]
When arbutin, kojic acid, hydroquinone monobenzyl ether, and the like are blended, there is an effect of lightening the skin of a slightly blackish color, but this is not the desired level. Further, there is no mitigating action on skin damage caused by ultraviolet rays or the like, and there are cases where there is a problem in the safety of the skin, and sufficient stability may not be obtained. Vitamin C and the like have a whitening effect and an anti-inflammatory effect, but there remains much room for improvement in terms of the degree and stability of the effect. As described above, it is extremely difficult to obtain a skin cosmetic that has a damage mitigating action due to skin inflammation suppression effect, excellent in whitening effect, high skin safety, and good storage stability.
[0008]
[Problems to be solved by the invention]
Under such circumstances, an object of the present invention is to provide a skin cosmetic that is excellent in inflammation suppressing effect and whitening effect, has high stability in the preparation, and has excellent skin safety and feeling of use.
[0009]
[Means for Solving the Problems]
In view of such circumstances, the present inventors have conducted intensive studies to improve the difficulties of the prior art, and as a result, have found that the raspberry extract has a remarkably excellent inflammation suppressing effect. And by using together with the raspberry ketone-β-D-glucoside (JP-A-10-17462) having an excellent whitening effect that the present inventors have already proposed for application to the whitening cosmetics, It has been found that the effectiveness of improving the skin tone such as inflammation and blackening by exposure to ultraviolet rays and the like, skin darkness, blotches, freckles, etc. is dramatically increased by a synergistic effect. In addition, it was found that the skin cosmetic was excellent in usability, and the present invention was completed.
[0010]
That is, in the present invention, the raspberry extract obtained by extracting the raspberry fruit with a polar organic solvent is 0.001 to 5.0% by weight in terms of dry matter, and raspberry ketone-β-D-glucoside 0.05 to A skin cosmetic containing 10.0% by weight , wherein the polar organic solvent is water, methanol, ethanol, n-propanol, i-propanol, 1,3-butylene glycol, propylene glycol, acetone, diethyl ether, It exists in the skin cosmetics characterized by being independent or the combination of 2 or more types chosen from ethyl acetate .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
[0012]
The raspberry according to the present invention refers to raspberries that are cultivated as fruit trees among the Rosaceae and Rubus genus. Raspberry extract is used which was extracted raspberry fruit by polar organic solvent extraction. Examples of the polar organic solvent used include water, lower ketones such as methanol, ethanol, n-propanol, i-propanol and other lower alcohols, 1,3-butylene glycol, propylene glycol and other lower polyhydric alcohols, and acetone. And lower ethers such as diethyl ether, ethyl acetate and the like. These may be used alone or in combination of two or more. Moreover, it is also possible to utilize the fruit residue at the time of manufacturing a juice by pressing the raspberry fruit. This makes it possible to effectively use the residue that has been discarded so far.
[0013]
In a preferred extraction method, 5 to 20 times by weight of alcohol such as methanol and ethanol and other polar organic solvents are added to the crushed raspberry fruit residue, followed by stirring and extraction at room temperature. After completion of the extraction treatment, insoluble solids are separated and removed and filtered, and the filtrate is concentrated to obtain a concentrated solution. The concentrated solution thus obtained can be used as it is, but it is preferable to further purify and use this concentrated solution. As a purification means, a commonly used method may be used. For example, a porous resin such as Sepabead SP-207 (manufactured by Mitsubishi Chemical) Diaion HP20 (manufactured by Mitsubishi Chemical) and a concentrated solution are brought into contact with each other. Examples thereof include a resin adsorption purification method. The raspberry extract according to the present invention can be obtained by eluting the active ingredient adsorbed on the resin with ethanol or the like and concentrating the eluate.
[0014]
The blending amount of the raspberry extract in the skin cosmetic of the present invention is 0.001 to 5.0% by weight (hereinafter referred to as wt%) in terms of dry matter based on the total amount of the cosmetic, and preferably 0. .1 to 2.0 wt%.
[0015]
If the blending amount of the raspberry extract is less than 0.001 wt%, the effect of the present invention is not sufficient, and even if the blending amount of the raspberry extract exceeds 5.0 wt%, the effect corresponding to the increase is improved. Can not be expected, the feeling during use tends to be poor, and it becomes difficult to hold individual dosage forms.
[0016]
The blending amount of the raspberry ketone-β-D-glucoside in the skin cosmetic according to the present invention is 0.05 to 10.0 wt% based on the total amount of the cosmetic. And preferably, it is 0.1-3.0 wt%.
[0017]
If the blending amount of raspberry ketone-β-D-glucoside is less than 0.05 wt%, the effect of the present invention is not sufficient, and even if the blending amount of raspberry extract exceeds 10.0 wt%, it is commensurate with the increase. The improvement of the effect cannot be expected, the feeling during use tends to be poor, and it becomes difficult to maintain individual dosage forms.
[0018]
The skin cosmetic according to the present invention may be used as a bath agent in addition to the cosmetic generally applied to the skin. As the dosage form, it is possible to use a commonly used aqueous solution, W / O type or O / W type emulsion, an appropriate vaginal form, etc. to form granules or other powders, tablets, etc., specifically , Cream, milky lotion, lotion, pack, gel, stick, sheet, pap and the like. For example, in the case of a milky lotion, this skin cosmetic can be produced by an ordinary method in which an oil phase and an aqueous phase are dissolved by heating and emulsified and cooled.
[0019]
In addition to the above-mentioned raw materials, the skin cosmetic according to the present invention includes tar pigments, colored pigments such as iron oxide, preservatives such as parabens, anionic surfactants such as fatty acid soap, sodium cetyl sulfate, and the like. Nonionic surfactants such as oxyethylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyhydric alcohol fatty acid esters, polyoxyethylene hydrogenated castor oil, polyhydric alcohol fatty acid esters, polyglycerin fatty acid esters, tetraalkylammonium salts Cationic surfactants such as betaine type, sulfobetaine type, sulfoamino acid type, amphoteric surfactants such as sodium N-stearoyl-L-glutamate, natural surfactants such as lecithin and lysophosphatidylcholine Agent, gelatin, casein, starch, Arabica Natural polymers such as Karaya gum, guar gum, locust bean gum, dragagacanto gum, quince seed, pectin, carrageenan, sodium alginate, semi-synthetic polymers such as methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium carboxymethyl cellulose, ethyl cellulose, polyvinyl alcohol, Synthetic polymers such as polyvinyl methyl ether and copolymers, polyvinyl pyrrolidone, sodium polyacrylate, carboxyvinyl polymer, polyethylene oxide polymer, thickeners such as xanthene gum, pigments such as titanium oxide, antioxidants such as dibutylhydroxytoluene Etc. can be suitably blended within a range that achieves the object of the present invention.
[0020]
【Example】
Hereinafter, the present invention will be described in detail based on production examples, examples, and comparative examples. The present invention is not limited to the following examples.
[0021]
Production Example 1 (Production Example of Raspberry Extract)
750 g of ethyl acetate was added to 100 g of crushed raspberry fruits, and the mixture was stirred and extracted at room temperature for about 1 hour. Filtration with a filter paper was performed to remove insoluble solids, thereby obtaining 15 g of an extract. Next, this extract was gradually poured into a column packed with 100 ml of porous resin / Separ beads SP-207 [trade name, manufactured by Mitsubishi Chemical Corporation]. Next, after thoroughly washing the resin with water, 150 g of 50% ethanol aqueous solution was poured to elute the substance adsorbed on the resin. The obtained eluate was concentrated under reduced pressure and dried to obtain 6.5 g of a raspberry extract (dried product).
[0022]
Production Example 2 [Synthesis Method of Raspberry Ketone-D-Glucoside (β Form)]
40 ml of dehydrated toluene was charged with 2.76 g of raspberry ketone, 8 g of glucose pentaacetate, and 2 g of molecular sieves. The mixture was stirred at room temperature for about 1 hour. After adding 20 ml of water, the molecular sieves were filtered off. The organic layer was extracted from the filtrate with ethyl acetate. The ethyl acetate layer was washed with 1N sodium hydroxide to remove unreacted raspberry ketone. The ethyl acetate layer was washed with purified water and then dried over sodium sulfate. After removing sodium sulfate, the organic solvent was removed under reduced pressure to obtain raspberry ketone tetraacetylglucoside.
[0023]
The raspberry ketone tetraacetylglucoside was deacetylated using sodium methoxide by a conventional method, and then neutralized using an ion exchange resin (Amberlite; manufactured by Organo). After filtering off the ion exchange resin, the solvent was removed under reduced pressure to obtain 3.4 g of raspberry ketone-D-glucoside (β form).
[0024]
Various tests were carried out using the raspberry extract and raspberry ketone-β-D-glucoside obtained in the above production example. Hereinafter, raspberry ketone-β-D-glucoside is abbreviated as RKβG, and raspberry extract as RFEX.
[0025]
Examples 1-3, Comparative Examples 1-3
(1) Melanin production inhibition test B16 melanoma cells (3 × 10 5 cells) were seeded in a 75 cm 2 flask and 10 ml of 10% FBS-DMEM medium added with 100 μl of a 20% ethanol solution having a sample concentration of 100 μg / ml to 10 mg / ml. The culture was performed at 37 ° C. in a 5% CO 2 atmosphere for 72 hours. After completion of the culture, the cells were washed with PBS, detached with trypsin-EDTA, centrifuged, and the cells were collected. The obtained cells were treated with 5% TCA, ethanol-ether = 3: 1, ether. Furthermore, it melt | dissolved with Solene 350, and the light absorbency was measured in wavelength 400nm using the spectrophotometer. On the other hand, the inhibition rate (%) was determined with the absorbance of 100% ethanol added instead of the sample solution as 100.
[0026]
(2) Active oxygen production suppression test (NBT method)
Composition of 2.4 ml of 0.05 M sodium carbonate buffer (pH 10.2), 0.1 ml of 3 mM xanthine, 0.1 ml of 3 mM EDTA, 0.1 ml of 0.15% bovine serum albumin, 0.1 ml of 0.75 mM nitroblue tetrazolium 0.1 ml of a 20% ethanol solution having a sample concentration of 30 μg / ml to 3 mg / ml is added, and heated at 25 ° C. for 10 minutes. Thereto is added 0.1 ml of a 250-fold diluted xanthine oxidase (manufactured by Sigma) derived from buttermilk and reacted at 25 ° C. for 20 minutes. 0.1 ml of 6 mM copper chloride was added to stop the reaction, and the absorbance was measured at a wavelength of 560 nm using a spectrophotometer. In place of the sample solution, 0.1 ml of 20% ethanol was added, and the absorbance (%) was determined with the absorbance as 100.
[0027]
(3) Lipid peroxide production inhibition test (TBA method)
0.3 ml of methyl linoleate, 3.0 ml of 1 mM hypoxanthine (including 0.1% Triton X-100), 0.4 ml of 20% ethanol solution with a sample concentration of 10 μg / ml to 1 mg / ml, 0.15 ml of distilled water, derived from buttermilk 20 times diluted xanthine oxidase (manufactured by Sigma) 0.15 ml of a mixed solution is shaken at 37 ° C. for 24 hours. Add 0.5 ml of 10% phosphotungstic acid and 1.0 ml of 0.67% thiobarbituric acid to 0.3 ml of the above composition, stir, heat at 95-100 ° C. for 30 minutes, and then quench and add n-butanol. After shaking and stirring, centrifugation (3000 rpm, 10 minutes) was performed, and the absorbance of the supernatant was measured using a spectrophotometer at a wavelength of 535 nm. The inhibition rate (%) with respect to the control was determined using the absorbance of 0.4 ml of 20% ethanol added instead of the sample solution as a control.
[0028]
Figure 0004025461
[0029]
The results of various tests are shown in Table 1. As shown in Table 1, compared with Comparative Examples 1 to 3, the skin cosmetics of Examples 1 to 3 according to the present invention clearly showed good results in all the tests.
[0030]
Examples 4-6, Comparative Examples 4-6 (Skin Lotion)
Various tests carried out in skin cosmetics (skin lotions) to be described later; (4) UV erythema suppression test, (5) UV pigmentation suppression test, and (6) whitening practical test are as follows.
[0031]
(4) UV erythema suppression test The skin lotion application site and base (excluding B and C components from the skin lotion) application site were set on the back skin of 10 Hartley guinea pigs that had undergone hair removal. Irradiation was performed twice at a minimum of twice the minimum amount of erythema. A skin lotion or base was applied 24 hours before and immediately after the irradiation, and the state of erythema was determined 24 hours after the application according to the following criteria, and the average score was evaluated.
[0032]
Figure 0004025461
[0033]
(5) Ultraviolet pigmentation suppression test The minimum erythema dose in the UVB region on the back skin of 10 A1-type guinea pigs (6 weeks old, female) that had undergone hair removal, the skin lotion application site and base (B and C components from skin lotion) The application site | part was set and irradiation was continuously performed to two places (2 cm x 2 cm) for 3 days. A skin lotion or base was applied twice a day for 3 weeks immediately after irradiation, and after 3 weeks, the state of pigmentation was evaluated according to the following criteria.
[0034]
Figure 0004025461
[0035]
(6) Whitening practical test For the forearm bent side skin of 20 test subjects exposed to sunlight in summer for 3 hours (1.5 hours per day for 2 days) The skin lotion was applied from the day exposed to sunlight, and the base was applied to the right forearm flexor side skin once a morning and evening for 13 weeks continuously from the day exposed to sunlight.
[0036]
In addition, evaluation was shown by the number of the test subjects from whom the effect of the sample application part was confirmed by the base application part. Furthermore, the skin damage mitigating action by ultraviolet rays was also evaluated at the same time.
[0037]
In the raw material composition shown in Table 2, the active ingredients were blended as shown in Table 3, skin lotions were prepared, and the above tests were performed.
[0038]
(1) Preparation method The C component described in Table 2 was uniformly dissolved in the D component and the B component was uniformly dissolved in the A component, and then the A component and the D component were uniformly mixed and stirred, dispersed, and then filled into a container.
[0039]
Figure 0004025461
[0040]
Figure 0004025461
[0041]
The results of various tests are shown in Table 3 above. As shown in Table 3, Comparative Examples 4 to 6 did not show good results in various tests.
[0042]
Skin lotions, which are the skin cosmetics of the invention of Examples 4-6, showed clearly good results in all the tests. In the whitening practical test, no skin irritation occurred in human skin.
[0043]
Examples 7-9, comparative examples 7-9 (skin cream)
In the raw material composition of Table 4, the active ingredients shown in Table 5 were blended to prepare a skin cream, and the above tests were performed.
[0044]
(1) Preparation method The mixture of the B component and the A component described in Table 4 and the mixture of the C component and the D component are heated and dissolved uniformly to bring the temperature to 80 ° C. Next, the D component is injected into the A component and emulsified, and then cooled to 30 ° C. with stirring.
[0045]
Figure 0004025461
[0046]
Figure 0004025461
[0047]
The results of various tests are shown in Table 5 above. As shown in Table 5, Comparative Examples 7 to 9 did not show good results in various tests.
[0048]
Examples 7-9 showed clearly good results in all tests and good results in tests on human skin. In the whitening practical test, no skin irritation occurred in human skin.
[0049]
【The invention's effect】
As described above, the raspberry extract according to the present invention contains 0.001 to 5.0 wt% and raspberry ketone-β-D-glucoside 0.05 to 10.0 wt% in terms of dry matter. The skin cosmetics characterized by the above are effective in improving skin color tone changes such as skin darkness, blotches and freckles, and provide a highly safe skin cosmetic. It also has the effect of alleviating skin damage due to inflammation caused by exposure to ultraviolet rays, darkness, etc., and maintaining a normal skin condition. Furthermore, it is useful as a skin cosmetic having an excellent feeling of use such as no skin irritation.

Claims (1)

ラズベリー果実を極性有機溶媒で抽出して得られるラズベリー抽出物を乾固物換算で、0.001〜5.0重量%と、ラズベリーケトン−β−D−グルコシド0.05〜10.0重量%とを含有する皮膚化粧料であって、前記極性有機溶媒が水、メタノール、エタノール、n−プロパノール、i−プロパノール、1,3−ブチレングリコール、プロピレングリコール、アセトン、ジエチルエーテル、酢酸エチルから選ばれる単独、又は2種以上の組み合わせであることを特徴とする皮膚化粧料。 A raspberry extract obtained by extracting raspberry fruits with a polar organic solvent in terms of dried solids, 0.001 to 5.0% by weight, and raspberry ketone-β-D-glucoside 0.05 to 10.0% by weight The polar organic solvent is selected from water, methanol, ethanol, n-propanol, i-propanol, 1,3-butylene glycol, propylene glycol, acetone, diethyl ether, and ethyl acetate Or a combination of two or more skin cosmetics.
JP11340399A 1999-04-21 1999-04-21 Skin cosmetics Expired - Fee Related JP4025461B2 (en)

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JP2006290749A (en) * 2005-04-06 2006-10-26 Ichimaru Pharcos Co Ltd Melanogenesis inhibitor
JP4781842B2 (en) * 2006-02-23 2011-09-28 株式会社 資生堂 Method for producing vegetable whitening agent, plant whitening agent and skin external preparation for whitening
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