JP2004323380A - Skin bleaching preparation for external use and tyrosinase inhibitor - Google Patents

Skin bleaching preparation for external use and tyrosinase inhibitor Download PDF

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Publication number
JP2004323380A
JP2004323380A JP2003117049A JP2003117049A JP2004323380A JP 2004323380 A JP2004323380 A JP 2004323380A JP 2003117049 A JP2003117049 A JP 2003117049A JP 2003117049 A JP2003117049 A JP 2003117049A JP 2004323380 A JP2004323380 A JP 2004323380A
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Prior art keywords
artocarpus
skin
phase
added
extract
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Japanese (ja)
Inventor
Kiyotaka Hasegawa
聖高 長谷川
Kenichi Umishio
健一 海塩
Noritoshi Maeda
憲寿 前田
Koji Kobayashi
孝次 小林
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Shiseido Co Ltd
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Shiseido Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a skin bleaching preparation for external use which is used for the skin, has an excellent tyrosinase activity-inhibiting action and has excellent lighting and bleaching effects on pigmentation after sunburn, stains, freckles, liver spots, and the like. <P>SOLUTION: This skin bleaching preparation for external use is characterized by compounding one or more extracts selected from the extracts of Artocarpus elastica Reinw. and Artocarpus kunstleri Hook. f. which are Moraceae plants, as a bleaching ingredient. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、日焼け後の色素沈着・しみ・そばかす・肝斑等の予防および改善に有効な美白用皮膚外用剤、およびチロシナーゼ活性阻害作用を有するチロシナーゼ阻害剤に関する。
【0002】
【従来の技術】
皮膚のしみなどの発生機序については一部不明な点もあるが、一般には、ホルモンの異常や日光からの紫外線の刺激が原因となってメラニン色素が形成され、これが皮膚内に異常沈着するものと考えられている。皮膚の着色の原因となるこのメラニン色素は、表皮と真皮との間にあるメラニン細胞(メラノサイト)内のメラニン生成顆粒(メラノソーム)において生産され、生成したメラニンは、浸透作用により隣接細胞へ拡散する。このメラノサイト内における生化学反応は、次のようなものと推定されている。
【0003】
すなわち、必須アミノ酸であるチロシンが酵素チロシナーゼの作用によりドーパキノンとなり、これが酵素的または非酵素的酸化作用により赤色色素および無色色素を経て黒色のメラニンへ変化する過程がメラニン色素の生成過程である。従って、反応の第1段階であるチロシナーゼの作用を抑制することがメラニン生成の抑制に重要である。
【0004】
【発明が解決しようとする課題】
しかしチロシナーゼ作用を抑制する化合物はハイドロキノンを除いてはその効果の発現がきわめて緩慢であるため、皮膚色素沈着の改善効果が十分でない。一方、ハイドロキノンは効果は一応認められているが、感作性があるため、一般には使用が制限されている。そこでその安全性を向上させるため、高級脂肪酸のモノエステルやアルキルモノエーテルなどにする試み(特開昭58−154507号公報)がなされているが、エステル類は体内の加水分解酵素によって分解されるため必ずしも安全とはいいがたく、またエーテル類も安全性の面で充分に満足するものが得られていない。
【0005】
【課題を解決するための手段】
そこで本発明者らはこれらの問題を解決するものとして広く種々の物質についてチロシナーゼ活性阻害効果を調べた結果、特定のクワ科植物の抽出物がチロシナーゼ活性阻害作用を有していることを見い出し、本発明を完成するに至った。後記するこれらの植物の抽出物の美白作用およびチロシナーゼ活性阻害作用に関する報告はこれまでにない。本発明者らは上記知見に基づいて本発明を完成するに至った。
【0006】
すなわち本発明は、Artocarpus elastica Reinw.またはArtocarpus kunstleri Hook. f.の植物抽出物から選ばれた一種または二種以上を美白の有効成分として配合することを特徴とする美白用皮膚外用剤、およびArtocarpus elastica Reinw.またはArtocarpus kunstleri Hook. f.の植物抽出物から選ばれた一種または二種以上を配合することを特徴とするチロシナーゼ阻害剤である。
【0007】
以下、本発明の構成について詳述する。
本発明に用いられるArtocarpus elastica Reinw.およびArtocarpus kunstleri Hook. f.は、クワ科パンノキ属の植物であり、好ましくはその樹皮または木部が用いられる。本発明に用いられる抽出物は、上記植物を抽出溶媒と共に浸漬または加熱還流した後、濾過し、溶液として得られるか、または、その溶液を濃縮して固形物として得られる。これらの抽出過程において、活性炭や合成樹脂による脱色処理を実施することもできる。本発明に用いられる抽出溶媒は、通常抽出に用いられる溶媒であれば何でもよく、特にメタノール、エタノール、1,3−ブチレングリコール等のアルコール類、含水アルコール類、アセトン、酢酸エチル等の有機溶媒を単独あるいは組み合わせて用いることができるが、好ましくはエタノール、含水エタノール、1,3−ブチレングリコール、含水1,3−ブチレングリコールが、さらに好ましくは、50%含水エタノール、50%含水1,3−ブチレングリコールが用いられる。
【0008】
本発明における植物抽出物の配合量は、美白用外用剤全量中、乾燥物として0.0005〜20.0重量%、好ましくは0.001〜10.0重量%である。0.0005重量%未満であると、本発明でいう効果が十分に発揮されず、20.0重量%を超えると製剤化が難しいので好ましくない。また、10.0重量%以上配合してもさほど大きな効果の向上はみられない。
【0009】
また、本発明の美白用皮膚外用剤には、上記必須成分以外に、通常化粧品や医薬品等の皮膚外用剤に用いられる成分、例えば、その他の美白剤、保湿剤、酸化防止剤、油性成分、紫外線吸収剤、界面活性剤、増粘剤、アルコール類、粉末成分、色剤、水性成分、水、各種皮膚栄養剤等を必要に応じて適宜配合することができる。
【0010】
その他、エデト酸二ナトリウム、エデト酸三ナトリウム、クエン酸ナトリウム、ポリリン酸ナトリウム、メタリン酸ナトリウム、グルコン酸等の金属封鎖剤、カフェイン、タンニン、ベラパミル、トラネキサム酸およびその誘導体、甘草抽出物、グラブリジン、カリンの果実の熱水抽出物、各種生薬、酢酸トコフェロール、グリチルリチン酸およびその誘導体またはその塩等の薬剤、ビタミンC、アスコルビン酸リン酸マグネシウム、アスコルビン酸グルコシド、アルブチン、コウジ酸等の他の美白剤、グルコース、フルクトース、マンノース、ショ糖、トレハロース等の糖類なども適宜配合することができる。
【0011】
本発明の美白用皮膚外用剤は、例えば軟膏、クリーム、乳液、ローション、パック、浴用剤等、従来皮膚外用剤に用いるものであればいずれでもよく、剤型は特に問わない。
【0012】
【実施例】
次に実施例によって本発明をさらに詳細に説明する。尚、本発明はこれにより限定されるものではない。配合量は重量%である。実施例に先立ち、本発明の植物抽出物のチロシナーゼ活性阻害効果に関する試験方法とその結果について説明する。
【0013】
試験方法およびその結果
1.試料の調製
(1) Artocarpus elastica Reinw.抽出液
Artocarpus elastica Reinw.の樹皮10.14gを50%エタノール100mlに室温で10日間浸漬し、ろ過後ろ液を濃縮乾固して抽出物を813mg得た。この抽出物をDMSOに1%溶かし、この溶液を希釈して濃度を調整し、これを用いて以下の実験を行った。
【0014】
(2) Artocarpus kunstleri Hook. f.抽出液
Artocarpus kunstleri Hook. f.の樹皮10.21gを50%エタノール100 mlに室温で10日間浸漬し、ろ過後ろ液を濃縮乾固して抽出物を1.09g得た。この抽出物をDMSOに1%溶かし、この溶液を希釈して濃度を調整し、これを用いて以下の実験を行った。
【0015】
2.細胞培養法
マウス由来のB16メラノーマ培養細胞を使用した。10%FBSおよびテオフィリン(0.09mg/ml)を含むイーグルMEM培地中でCOインキュベーター(95%空気,5%二酸化炭素)内、37℃の条件下で培養した。培養24時間後に試料溶液を終濃度(抽出乾燥物換算濃度)で5×10 〜5×10 質量%になるように添加し、さらに3日間培養を続け、以下の方法でメラニン生成量の視感判定およびチロシナーゼ活性抑制効果を測定した。
【0016】
3.メラニン生成量の視感判定
ウエルのプレートの蓋上に拡散板を置き、倒立顕微鏡で細胞内のメラニン量を観察し、本発明の化合物を添加していない試料(基準)の場合と比較した。その結果を表1に示した。また参考例として、すでにメラニン生成抑制作用のあることが知られているハイドロキノンについても上記と同様の試験を行った。その結果を併せて表1に示す。
【0017】
<判定基準>
A:基準と比較して白い(基準と比較してメラニン量が少ない)
B:基準と比較してやや白い(基準と比較してメラニン量がやや少ない)
C:基準と同程度(基準と比較してメラニン量が同程度)
【0018】
【表1】

Figure 2004323380
【0019】
4.チロシナーゼ活性阻害効果の測定
以下の方法でチロシナーゼ活性阻害効果を測定した。
チロシナーゼ活性の測定前にウエル中の培地を除去し、PBS 100 μlで2回洗う。各ウエルに45 μlの1 %トライトン−X(ローム・アンド・ハース社製商品名、界面活性剤)を含むPBSを加える。1分間プレートを振動させ、よく細胞膜を破壊し、マイクロプレートリーダーで475 nmの吸光度を測定してこれを0分時の吸光度とした。その後すばやく5 μlの10 mMのL−DOPA溶液を加えて、37 ℃のインキュベーターに移し、60分間反応させた。1分間プレートを振動させ、60分時の吸光度(475 nm)を測定した。本発明の化合物を添加していない試料(コントロール)の場合の0分時と60分時の吸光度差に対するArtocarpus elastica Reinw.及びArtocarpus kunstleri Hook. f.の抽出物添加試料の前記吸光度差をチロシナーゼ活性率とした。その結果を表2に示す。また、参考例として、チロシナーゼ活性抑制作用があることが知られているハイドロキノンについても上記と同様の試験を行った。その結果を併せて表2に示す。
【0020】
【表2】
Figure 2004323380
【0021】
表1および表2の結果より、本発明の植物抽出物は、ハイドロキノンに比べ、メラニン生成抑制効果及びチロシナーゼ活性抑制効果に極めて優れていることが分かる。
【0022】
5.美白効果試験
(1)美白用皮膚外用剤の調製
本発明の植物抽出物を美白の有効成分として用い、下記の処方によりローションを調製した。調製方法は常法に従いアルコール相および水相を調製後、可溶化して行った。
【0023】
(アルコール相)
95%エタノール 55.0 質量%
ポリオキシエチレン(40モル)硬化ヒマシ油 2.0
「表3」記載の美白剤 「表3」記載の量
(水相)
ジプロピレングリコール 5.0
ヘキサメタリン酸ナトリウム 0.3
イオン交換水 残余
【0024】
(2)試験方法
夏期の太陽光に4時間(1日2時間で2日間)晒された被験者、40名の上腕内側部皮膚を対象として、太陽光に晒された日の5日後より、各ローションを朝夕1回づつ4週間塗布した。パネル1群を10名に分けて4群とした。塗布終了後、紫外線照射によって誘導される色素沈着に対して抑制効果があったかどうかを調べ、その程度を以下の基準に基づいて評価した。その結果を表3に示す。
【0025】
(3)評価基準
A:著効または有効とした被験者が8名以上
B:著効または有効とした被験者が5〜7名
C:著効または有効とした被験者が3〜4名
D:著効または有効とした被験者が2名以下
【0026】
表3より明らかなように、太陽光に晒された被験者に対する美白効果は、本発明の美白剤を添加したローションは、ハイドロキノン配合の場合よりも、メラニン色素の沈着を防ぎ、色黒を予防・改善することが認められた。
【0027】
【表3】
Figure 2004323380
【0028】
以下に、種々の剤型の本発明による美白用皮膚外用剤の配合例を実施例として説明する。
【0029】
実施例1 クリーム
Figure 2004323380
【0030】
(製法)
イオン交換水にプロピレングリコールとArtocarpus elastica Reinw.のメタノール抽出物と苛性カリを加え溶解し、加熱して70℃に保つ(水相)。他の成分を混合し加熱融解して70℃に保つ(油相)。水相に油相を徐々に加え、全部加え終わってからしばらくその温度に保ち反応を起こさせる。その後、ホモミキサーで均一に乳化し、よくかきまぜながら30℃まで冷却する。
【0031】
実施例2 クリーム
Figure 2004323380
【0032】
(製法)
イオン交換水にプロピレングリコールを加え、加熱して70℃に保つ(水相)。他の成分を混合し加熱融解して70℃に保つ(油相)。水相に油相を加え予備乳化を行い、ホモミキサーで均一に乳化した後、よくかきまぜながら30℃まで冷却する。
【0033】
実施例3 クリーム
Figure 2004323380
【0034】
(製法)
イオン交換水に石けん粉末と硼砂を加え、加熱溶解して70℃に保つ(水相)。他の成分を混合し加熱融解して70℃に保つ(油相)。水相に油相をかきまぜながら徐々に加え反応を行う。反応終了後、ホモミキサーで均一に乳化し、乳化後よくかきまぜながら30℃まで冷却する。
【0035】
実施例4 乳液
Figure 2004323380
【0036】
(製法)
少量のイオン交換水にカルボキシビニルポリマーを溶解する(A相)。残りのイオン交換水にポリエチレングリコール1500とトリエタノールアミンを加え、加熱溶解して70℃に保つ(水相)。他の成分を混合し加熱融解して70℃に保つ(油相)。水相に油相を加え予備乳化を行い、A相を加えホモミキサーで均一乳化し、乳化後よくかきまぜながら30℃まで冷却する。
【0037】
実施例5 乳液
Figure 2004323380
【0038】
(製法)
イオン交換水にプロピレングリコールを加え、加熱して70℃に保つ(水相)。他の成分を混合し、加熱融解して70℃に保つ(油相)。油相をかきまぜながらこれに水相を徐々に加え、ホモミキサーで均一に乳化する。乳化後よくかきまぜながら30℃まで冷却する。
【0039】
実施例6 ゼリー
Figure 2004323380
【0040】
(製法)
イオン交換水にカーボポール940を均一に溶解し、一方、95%エタノールにArtocarpus elastica Reinw.の50%エタノール水溶液抽出物、ポリオキシエチレン(50モル)オレイルアルコールエーテルを溶解し、水相に添加する。次いで、その他の成分を加えたのち苛性ソーダ、L−アルギニンで中和させ増粘する。
【0041】
実施例7 美容液
Figure 2004323380
【0042】
(製法)
A相、C相をそれぞれ均一に溶解し、C相にA相を加えて可溶化する。次いでB相を加えたのち充填を行う。
【0043】
実施例8 パック
Figure 2004323380
【0044】
(製法)
A相、B相、C相をそれぞれ均一に溶解し、A相にB相を加えて可溶化する。次いでこれをC相に加えたのち充填を行う。
【0045】
実施例9 固形ファンデーション
Figure 2004323380
【0046】
(製法)
タルク〜黒色酸化鉄の粉末成分をブレンダーで十分混合し、これにスクワラン〜オクタン酸イソセチルの油性成分、Artocarpus kunstleri Hook. f.のエタノール抽出物、防腐剤、香料を加え良く混練した後、容器に充填、成型する。
【0047】
実施例10 乳化型ファンデーション(クリームタイプ)
Figure 2004323380
【0048】
(製法)
水相を加熱撹拌後、十分に混合粉砕した粉体部を添加してホモミキサー処理する。更に加熱混合した油相を加えてホモミキサー処理した後、撹拌しながら香料を添加して室温まで冷却する。
【0049】
実施例11 エッセンス
Figure 2004323380
Figure 2004323380
【0050】
実施例12 クリーム
Figure 2004323380
Figure 2004323380
【0051】
実施例13 エッセンス
Figure 2004323380
Figure 2004323380
【0052】
実施例14 クリーム
Figure 2004323380
【0053】
実施例15 クリーム
Figure 2004323380
【0054】
実施例16 クリーム
Figure 2004323380
【0055】
【発明の効果】
以上説明したように、本発明の美白用皮膚外用剤は、優れたチロシナーゼ活性阻害作用を有しており、日焼け後の色素沈着・しみ・そばかす・肝斑等の淡色化、美白に優れた効果を有すると共に、安全性にも優れたものである。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a skin whitening external preparation effective for preventing and improving pigmentation, spots, freckles, liver spots, etc. after sunburn, and a tyrosinase inhibitor having a tyrosinase activity inhibitory action.
[0002]
[Prior art]
The mechanism of development, such as spots on the skin, is partially unknown, but in general, abnormalities in hormones and ultraviolet light from sunlight cause melanin pigment formation, which abnormally deposits in the skin Is considered one. This melanin pigment, which causes skin coloring, is produced in melanocytes (melanosomes) in melanocytes (melanocytes) between the epidermis and the dermis, and the produced melanin diffuses to neighboring cells by osmosis. . The biochemical reaction in this melanocyte is estimated as follows.
[0003]
That is, tyrosine, which is an essential amino acid, is converted into dopaquinone by the action of the enzyme tyrosinase, and this is converted into black melanin via a red pigment and a colorless pigment by an enzymatic or non-enzymatic oxidative action, which is the process of producing melanin pigment. Therefore, it is important to suppress the action of tyrosinase, which is the first step of the reaction, to suppress the production of melanin.
[0004]
[Problems to be solved by the invention]
However, compounds that suppress the tyrosinase action, except for hydroquinone, have very slow onset of their effects, and thus do not have a sufficient effect of improving skin pigmentation. On the other hand, although hydroquinone is recognized as having an effect, its use is generally restricted because of its sensitizing properties. To improve the safety, attempts have been made to use higher fatty acid monoesters or alkyl monoethers (Japanese Patent Application Laid-Open No. 58-154507), but the esters are decomposed by hydrolytic enzymes in the body. Therefore, it is not always safe, and ethers which do not sufficiently satisfy safety requirements have not been obtained.
[0005]
[Means for Solving the Problems]
Therefore, the present inventors have investigated the tyrosinase activity inhibitory effect on a wide variety of substances as a solution to these problems, and found that an extract of a specific mulberry plant has a tyrosinase activity inhibitory effect, The present invention has been completed. There are no reports on the whitening effect and tyrosinase activity inhibitory effect of extracts of these plants described below. The present inventors have completed the present invention based on the above findings.
[0006]
That is, the present invention relates to Artocarpus elastica Reinw. Or Artocarpus kunstreri Hook. f. A skin whitening external preparation characterized by blending one or more selected from the plant extracts of the above as an active ingredient for whitening, and Artocarpus elastica Reinw. Or Artocarpus kunstreri Hook. f. A tyrosinase inhibitor comprising one or more selected from plant extracts of the above.
[0007]
Hereinafter, the configuration of the present invention will be described in detail.
The Artocarpus elastica Reinw. And Artocarpus kunstreri Hook. f. Is a plant belonging to the genus Mulaceae, and preferably the bark or xylem thereof is used. The extract used in the present invention is obtained by immersing or heating and refluxing the above-described plant together with an extraction solvent, and then filtering the solution, or obtaining the solution as a solid by concentrating the solution. In these extraction processes, a decolorizing treatment using activated carbon or a synthetic resin can also be performed. The extraction solvent used in the present invention may be any solvent as long as it is a solvent usually used for extraction. Particularly, methanol, ethanol, alcohols such as 1,3-butylene glycol, aqueous alcohols, acetone, and organic solvents such as ethyl acetate are used. It can be used alone or in combination, but preferably ethanol, aqueous ethanol, 1,3-butylene glycol, aqueous 1,3-butylene glycol, more preferably 50% aqueous ethanol, 50% aqueous 1,3-butylene Glycol is used.
[0008]
The blending amount of the plant extract in the present invention is 0.0005 to 20.0% by weight, preferably 0.001 to 10.0% by weight, as a dry matter, in the total amount of the external preparation for whitening. If the amount is less than 0.0005% by weight, the effects of the present invention cannot be sufficiently exerted. Further, even if it is blended at 10.0% by weight or more, the effect is not so greatly improved.
[0009]
In addition, in addition to the above essential components, the skin external preparation for skin whitening of the present invention includes components usually used in skin external preparations such as cosmetics and pharmaceuticals, for example, other whitening agents, humectants, antioxidants, oily components, An ultraviolet absorber, a surfactant, a thickener, an alcohol, a powder component, a coloring agent, an aqueous component, water, various skin nutrition agents, and the like can be appropriately compounded as necessary.
[0010]
In addition, sequestering agents such as disodium edetate, trisodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, caffeine, tannin, verapamil, tranexamic acid and its derivatives, licorice extract, glabridine , Hot water extract of berries of karin, various crude drugs, drugs such as tocopherol acetate, glycyrrhizic acid and its derivatives or salts thereof, vitamin C, magnesium ascorbate phosphate, ascorbic acid glucoside, arbutin, kojic acid and other whitening agents Ingredients, sugars such as glucose, fructose, mannose, sucrose, trehalose and the like can also be appropriately compounded.
[0011]
The whitening skin external preparation of the present invention may be any of those conventionally used for skin external preparations such as ointments, creams, emulsions, lotions, packs, bath preparations, etc., and the dosage form is not particularly limited.
[0012]
【Example】
Next, the present invention will be described in more detail by way of examples. Note that the present invention is not limited by this. The compounding amount is% by weight. Prior to the examples, test methods and results of the tyrosinase activity inhibitory effect of the plant extract of the present invention will be described.
[0013]
Test method and results Preparation of Sample (1) Artocarpus elastica Reinw. Extract Artocarpus elastica Reinw. Was immersed in 100 ml of 50% ethanol at room temperature for 10 days, and the filtrate after concentration was concentrated to dryness to obtain 813 mg of an extract. This extract was dissolved in DMSO at 1%, the concentration was adjusted by diluting the solution, and the following experiment was performed using the diluted extract.
[0014]
(2) Artocarpus kunstrelli Hook. f. Extract Artocarpus kunstreri Hook. f. Was immersed in 100 ml of 50% ethanol at room temperature for 10 days, and the filtrate after concentration was concentrated to dryness to obtain 1.09 g of an extract. This extract was dissolved in DMSO at 1%, the concentration was adjusted by diluting the solution, and the following experiment was performed using the diluted extract.
[0015]
2. Cell culture method B16 melanoma cultured cells derived from mice were used. The cells were cultured in an Eagle MEM medium containing 10% FBS and theophylline (0.09 mg / ml) in a CO 2 incubator (95% air, 5% carbon dioxide) at 37 ° C. Final concentration of the sample solution after 24 hours incubation (dry extract in terms of concentration) in 5 × 10 - 5 ~5 × 10 - was added to a 3% by weight, further continued for 3 days of culture, melanin in the following manner The amount of visual perception and the tyrosinase activity inhibitory effect were measured.
[0016]
3. A diffusion plate was placed on the lid of the plate of the wells for visual determination of the amount of melanin production, and the amount of melanin in the cells was observed with an inverted microscope, and compared with the case of a sample (standard) to which the compound of the present invention was not added. The results are shown in Table 1. Further, as a reference example, the same test as described above was conducted for hydroquinone, which is already known to have a melanin production inhibitory action. Table 1 also shows the results.
[0017]
<Judgment criteria>
A: White compared to the standard (melanin content is small compared to the standard)
B: Slightly white compared to the standard (melanin content slightly lower than the standard)
C: Same as standard (melanin content is equivalent to standard)
[0018]
[Table 1]
Figure 2004323380
[0019]
4. Measurement of tyrosinase activity inhibition effect The tyrosinase activity inhibition effect was measured by the following method.
Before measuring the tyrosinase activity, the medium in the wells is removed and washed twice with 100 μl of PBS. To each well, 45 μl of PBS containing 1% Triton-X (trade name, manufactured by Rohm and Haas Company) is added. The plate was vibrated for 1 minute to break the cell membrane well, and the absorbance at 475 nm was measured with a microplate reader, which was taken as the absorbance at 0 minutes. Thereafter, 5 μl of a 10 mM L-DOPA solution was quickly added thereto, transferred to an incubator at 37 ° C., and reacted for 60 minutes. The plate was shaken for 1 minute, and the absorbance (475 nm) at 60 minutes was measured. In the case of the sample (control) to which the compound of the present invention was not added, the difference in absorbance between the time of 0 minute and the time of 60 minutes was compared with that of Artocarpus elastica Reinw. And Artocarpus kunstreri Hook. f. The difference in absorbance of the extract-added sample was defined as the tyrosinase activity ratio. Table 2 shows the results. In addition, as a reference example, a test similar to the above was performed on hydroquinone, which is known to have a tyrosinase activity inhibitory effect. Table 2 also shows the results.
[0020]
[Table 2]
Figure 2004323380
[0021]
From the results in Tables 1 and 2, it can be seen that the plant extract of the present invention is extremely excellent in the melanin production inhibitory effect and the tyrosinase activity inhibitory effect as compared with hydroquinone.
[0022]
5. Whitening effect test (1) Preparation of skin whitening preparation for external use A lotion was prepared by using the plant extract of the present invention as an active ingredient for whitening according to the following formulation. The preparation was carried out by preparing an alcohol phase and an aqueous phase according to a conventional method and then solubilizing the same.
[0023]
(Alcohol phase)
95% ethanol 55.0% by mass
Polyoxyethylene (40 mol) hydrogenated castor oil 2.0
Whitening agent described in Table 3 Amount (aqueous phase) described in Table 3
Dipropylene glycol 5.0
Sodium hexametaphosphate 0.3
Ion exchange water residue [0024]
(2) Test method Forty subjects who were exposed to sunlight in the summer for 4 hours (2 hours a day for 2 days) and 40 upper arm inner skin, from 5 days after the sun exposure, The lotion was applied once every morning and evening for 4 weeks. The panel 1 group was divided into 10 people to make 4 groups. After completion of the coating, it was examined whether or not there was an inhibitory effect on pigmentation induced by ultraviolet irradiation, and the degree was evaluated based on the following criteria. Table 3 shows the results.
[0025]
(3) Evaluation Criteria A: Eight or more subjects who were extremely effective or effective B: 5 to 7 subjects who were extremely effective or effective C: 3 to 4 subjects who were extremely effective or effective D: Extremely effective Or, no more than two subjects were valid
As is apparent from Table 3, the lotion to which the whitening agent of the present invention was added showed that the lotion to which the whitening agent of the present invention was added prevented the melanin pigment from being deposited and prevented the skin from darkening more than the case of the hydroquinone combination. It was found to improve.
[0027]
[Table 3]
Figure 2004323380
[0028]
Hereinafter, examples of various formulations of whitening skin external preparations according to the present invention will be described as examples.
[0029]
Example 1 Cream
Figure 2004323380
[0030]
(Production method)
Propylene glycol and Artocarpus elastica Reinw. Then, a methanol extract and potassium hydroxide are added and dissolved, and the mixture is heated and maintained at 70 ° C. (aqueous phase). The other components are mixed, melted by heating and kept at 70 ° C. (oil phase). The oil phase is gradually added to the water phase, and after the addition, the temperature is maintained for a while to cause a reaction. Thereafter, the mixture is uniformly emulsified with a homomixer and cooled to 30 ° C. while stirring well.
[0031]
Example 2 Cream
Figure 2004323380
[0032]
(Production method)
Propylene glycol is added to ion-exchanged water, and heated to 70 ° C. (aqueous phase). The other components are mixed, melted by heating and kept at 70 ° C. (oil phase). The oil phase is added to the water phase to carry out preliminary emulsification, and after uniform emulsification with a homomixer, the mixture is cooled to 30 ° C. while stirring well.
[0033]
Example 3 Cream
Figure 2004323380
[0034]
(Production method)
Soap powder and borax are added to ion-exchanged water, heated and dissolved, and kept at 70 ° C. (aqueous phase). The other components are mixed, melted by heating and kept at 70 ° C. (oil phase). The oil phase is gradually added to the aqueous phase while stirring to carry out the reaction. After the completion of the reaction, the mixture is uniformly emulsified with a homomixer, and cooled to 30 ° C. with good stirring after emulsification.
[0035]
Example 4 Emulsion
Figure 2004323380
[0036]
(Production method)
The carboxyvinyl polymer is dissolved in a small amount of ion-exchanged water (phase A). Polyethylene glycol 1500 and triethanolamine are added to the remaining ion-exchanged water, dissolved by heating, and kept at 70 ° C. (aqueous phase). The other components are mixed, melted by heating and kept at 70 ° C. (oil phase). The oil phase is added to the water phase, pre-emulsification is performed, phase A is added, and the mixture is uniformly emulsified with a homomixer. After the emulsification, the mixture is cooled to 30 ° C. while stirring well.
[0037]
Example 5 Emulsion
Figure 2004323380
[0038]
(Production method)
Propylene glycol is added to ion-exchanged water, and heated to 70 ° C. (aqueous phase). The other components are mixed, heated and melted and kept at 70 ° C. (oil phase). While stirring the oil phase, the aqueous phase is gradually added thereto, and the mixture is uniformly emulsified with a homomixer. After the emulsification, cool to 30 ° C while stirring well.
[0039]
Example 6 Jelly
Figure 2004323380
[0040]
(Production method)
Carbopol 940 is uniformly dissolved in deionized water, while Artocarpus elastica Reinw. A 50% aqueous ethanol extract of polyoxyethylene (50 mol) oleyl alcohol ether is dissolved and added to the aqueous phase. Next, after adding other components, the mixture is neutralized with caustic soda and L-arginine to increase the viscosity.
[0041]
Example 7 Essence
Figure 2004323380
[0042]
(Production method)
Phase A and phase C are uniformly dissolved, and phase A is added to phase C to solubilize. Next, after the phase B is added, filling is performed.
[0043]
Example 8 Pack
Figure 2004323380
[0044]
(Production method)
A phase, B phase, and C phase are each uniformly dissolved, and B phase is added to A phase for solubilization. Then, after adding this to the C phase, filling is performed.
[0045]
Example 9 Solid Foundation
Figure 2004323380
[0046]
(Production method)
The powder component of talc to black iron oxide is sufficiently mixed in a blender, and the oil component of squalane to isocetyl octanoate, Artocarpus kunstrelli Hook. f. After adding an ethanol extract, a preservative and a fragrance to the mixture and kneading well, the mixture is filled into a container and molded.
[0047]
Example 10 Emulsion type foundation (cream type)
Figure 2004323380
[0048]
(Production method)
After heating and stirring the aqueous phase, a powder portion sufficiently mixed and pulverized is added, and a homomixer treatment is performed. Further, the oil phase mixed by heating is added, and the mixture is subjected to a homomixer treatment. Then, a fragrance is added with stirring, and the mixture is cooled to room temperature.
[0049]
Example 11 Essence
Figure 2004323380
Figure 2004323380
[0050]
Example 12 Cream
Figure 2004323380
Figure 2004323380
[0051]
Example 13 Essence
Figure 2004323380
Figure 2004323380
[0052]
Example 14 Cream
Figure 2004323380
[0053]
Example 15 Cream
Figure 2004323380
[0054]
Example 16 Cream
Figure 2004323380
[0055]
【The invention's effect】
As described above, the skin whitening agent for external use of the present invention has an excellent tyrosinase activity inhibitory effect, and is excellent in lightening and whitening pigmentation, spots, freckles, liver spots and the like after sunburn. And also have excellent safety.

Claims (3)

Artocarpus elastica Reinw.またはArtocarpus kunstleri Hook. f.の植物抽出物から選ばれた一種または二種以上を美白の有効成分として配合することを特徴とする美白用皮膚外用剤。Artocarpus elastica Reinw. Or Artocarpus kunstreri Hook. f. An external preparation for whitening skin, comprising one or more selected from plant extracts of the above as an active ingredient for whitening. 植物抽出物の配合量が0.0005〜20.0重量%である請求項1記載の美白用皮膚外用剤。The whitening skin external preparation according to claim 1, wherein the amount of the plant extract is 0.0005 to 20.0% by weight. Artocarpus elastica Reinw.またはArtocarpus kunstleri Hook. f.の植物抽出物から選ばれた一種または二種以上を配合することを特徴とするチロシナーゼ阻害剤。Artocarpus elastica Reinw. Or Artocarpus kunstreri Hook. f. A tyrosinase inhibitor comprising one or more selected from plant extracts of the above.
JP2003117049A 2003-04-22 2003-04-22 Skin bleaching preparation for external use and tyrosinase inhibitor Withdrawn JP2004323380A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107714532A (en) * 2017-09-27 2018-02-23 蔡章生 Shining face maintenance whitening and spot eliminating cream of epithelium and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107714532A (en) * 2017-09-27 2018-02-23 蔡章生 Shining face maintenance whitening and spot eliminating cream of epithelium and preparation method thereof

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