JP3557616B2

JP3557616B2 - Whitening cosmetics

Info

Publication number: JP3557616B2
Application number: JP2002029408A
Authority: JP
Inventors: 紀之渡辺; 奉昭佐藤
Original assignee: Kameda Seika Co Ltd
Current assignee: Kameda Seika Co Ltd
Priority date: 2002-02-06
Filing date: 2002-02-06
Publication date: 2004-08-25
Anticipated expiration: 2022-02-06
Also published as: JP2003231613A

Description

【０００１】
【産業上の利用分野】
本発明は、美白効果に優れ、皮膚に対する安全性の高い美白化粧料に関する。
【０００２】
【発明が解決しようとする課題】
従来、シミ、ソバカスなどの皮膚の色素沈着の予防と解消のために、種々の美白化粧料や皮膚外用剤等が知られている。また、最近、皮膚に対する安全性の観点から、植物由来の天然成分を配合したものが提案されている。
【０００３】
例えば、特開２０００−４４４５９号公報、特開２０００−２６４８３４号公報には、米糠抽出物を使用したものが開示されている。また、特開２０００−１１９１５６号公報、特開２００１−１１４６３４号公報には、植物抽出物を含むものが開示されている。
【０００４】
しかしながら、従来の美白化粧料等に配合されている植物由来の天然成分は、煩雑な操作を要する抽出操作によって得られたものである。抽出操作の一例としては、まず、植物と溶剤を混合して数日間浸漬させ、天然成分を抽出後、濾過、遠心分離等の固液分離操作を行って固形分を除去した後、ｐＨを調整して抽出物が得られる。さらに、得られた抽出物を濃度調整し、或いは凍結乾燥法、スプレードライ法等により粉末化する方法もある。しかし、このような抽出操作は、製法が煩雑で製造コストが高い割には、十分満足できる美白効果が得られるものではなかった。
【０００５】
本発明は、上記問題を解決するものであり、美白効果に優れ、皮膚に対する安全性が高く、かつ容易に低コストで製造できる美白化粧料を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的に鑑み鋭意研究の結果、本発明者は、稲を粉末化し、これを皮膚に塗布すると非常に高い美白効果が得られることを見出し、本発明に想到したものである。
【０００７】
本発明の請求項１記載の美白化粧料は、稲を粉砕又は破砕して得た粉末と、オリーブ油又は椿油又は米油からなる油脂とを含有し、前記油脂を２０〜９０重量％含有する。
【０００８】
また、本発明の請求項２記載の美白化粧料は、前記請求項１において、前記粉末の粒径は５００μｍ以下である。
【０００９】
また、本発明の請求項３記載の美白化粧料は、前記請求項１又は２において、前記粉末を１〜８０重量％含有する。
【００１０】
【発明の実施形態】
以下、本発明の美白化粧料について詳細に説明する。
【００１１】
本発明において、稲を粉砕又は破砕して得た粉末とは、稲苗、青刈り稲等の青色状態の稲を粉砕又は破砕して得た粉末のことである。ここで、田植え時に発生する余剰の稲苗、減反による青刈り稲、稲刈り時に脱落米から発生する発芽苗、稲刈り後に稲株から発生する再生稲等の利用価値のない稲を用いれば、極めて安価に稲の粉末を得ることができる。なお、稲は黄色状態のものではなく、青色（緑色）状態のものを用いる。
【００１２】
なお、青色状態の稲には、活性酸素消去機能、酸化防止機能、ラジカル消去機能等を有することが分かっている。
【００１３】
稲の粉末の製造方法は特に限定しないが、好ましくは、稲の葉、茎、穂の部分のみを用い、これを洗浄した後、８０〜１００℃で３０秒〜１５分間、蒸気と接触させて蒸し、７０〜８０℃で１２〜１６時間、水分含有量が８％未満になるまで乾燥させ、その後、粉砕又は破砕することによって得る。または、洗浄した後、すぐに粉砕又は破砕することによって得ても良い。ここで、蒸気と接触させることにより、稲の青色が一層鮮やかになり、美白化粧料を鮮やかな緑色に着色することもできる。なお、皮膚に塗布した際の有効成分の吸収効果、美白効果の観点から、粉末の粒径は５００μｍ以下であって、粒度が均一であるのが好ましい。さらに、粉末の粒径を１００μｍ以下とすることによって、有効成分の吸収効果、美白効果が向上する。また、美白化粧料中の粉末の含有量は、好ましくは１〜８０重量％であり、さらに好ましくは４０〜６０重量％である。なお、粉末の含有量が少なすぎると美白効果があまり期待できず、多すぎると伸展性に乏しく、皮膚への定着性が悪くなる。
【００１４】
油脂とは、オリーブ油、椿油、米油のいずれか１つ以上を含有し、その他、パーム油、大豆油、ヤシ油、カカオ油等を含んでも良い。なお、含まれる油脂の種類はこれらに限定されない。また、美白化粧料中の油脂の含有量は、好ましくは２０〜９０重量％であり、さらに好ましくは４０〜６０重量％である。なお、油脂の含有量が少なすぎると伸展性に乏しく、皮膚に塗布し難くなる。一方、多すぎると粉末が均一に分散しにくく、皮膚への定着性が悪くなる。
【００１５】
オリーブ油とは、オリーブの果実から採取される淡黄色から淡緑黄色の油脂であり、オレイン酸を主成分として８０％程度含有する。
【００１６】
椿油とは、椿の種子から採取される無色から微黄色の油脂であり、オレイン酸を主成分として８５％程度含有する。
【００１７】
米油とは、米の種子の精米直後の米糠から得られる淡黄色の油液であり、オレイン酸を主成分として４０％程度含有する。また、成分として含まれるオリザノールは、紫外線を吸収して皮膚を保護する効果がある。
【００１８】
オレイン酸は、一価不飽和脂肪酸の一種であり、多価不飽和脂肪酸と比較して保存安定性、加熱安定性に優れるとともに、血中の悪玉コレステロールを低下させる作用などがある。
【００１９】
なお、本発明の美白化粧料は、この他、通常の化粧料に含まれる界面活性剤、保湿剤、増粘剤、防腐殺菌剤、粉体成分、紫外線吸収剤、色素、香料等を必要に応じて適宜配合し、各々の成分によってクリーム、乳液、ローション、軟膏、パック剤等の剤型としてもよい。
【００２０】
以上詳述したとおり、本発明の美白化粧料は、稲を粉砕又は破砕して得た粉末を含有するから、稲の有する活性酸素消去機能、酸化防止機能、ラジカル消去機能等によって、皮膚の色素沈着、皺等の老化減少が防止され、美白効果に優れる。また、稲の粉末は天然素材であり、合成物質と比較して皮膚に対する安全性が高い。さらに、稲の粉末を用いるので、稲の抽出物を用いる場合と比較して、製法が非常に簡単であり低コストで製造できるとともに、粉末の方が多様な成分を含むため、それぞれの多様な成分の相乗効果によって美白効果が増加するものと期待される。なお、美白効果があると思われる稲の成分としては、フェルラ酸、フィチン酸、γ−オリザノール、トコトリエノールの他、β−カロチン、ビタミンＥ、ポリフェノール等がある。
【００２１】
また、オリーブ油又は椿油又は米油からなる油脂を含有するから、オレイン酸を多く含み、保存安定性、加熱安定性に優れる。特に、米油にはγ−オリザノールとフェルラ酸が多く含まれ、紫外線を吸収するので、日焼け防止効果も期待できる。
【００２２】
また、前記粉末の粒径は５００μｍ以下であるから、皮膚に塗布した際の有効成分の吸収効果に優れる。
【００２３】
また、前記粉末を１〜８０重量％含有するから、美白効果が期待できるとともに、皮膚への定着性もよい。
【００２４】
さらに、前記油脂を２０〜９０重量％含有するから、伸展性に富み、皮膚に塗布しやすく、皮膚への定着性もよい。
【００２５】
【実施例】
以下の具体的実施例により、本発明をさらに詳細に説明する。なお、本発明はこれら実施例により限定されるものではない。
【００２６】
実施例１
５０〜７０ｃｍに生育した稲を刈り取り、その葉、茎を洗浄、蒸し、乾燥、裁断、粉砕して、粒径が５００μｍ以下の粉末とした。この稲の粉末１ｇにオリーブ油１ｇを入れ、十分に混練して美白化粧料を得た。
【００２７】
実施例２
５０〜７０ｃｍに生育した稲を刈り取り、その葉、茎を洗浄、蒸し、乾燥、裁断、粉砕して、粒径が５００μｍ以下の粉末とした。この稲の粉末１ｇに米油１ｇを入れ、十分に混練して美白化粧料を得た。
【００２８】
実施例３
５０〜７０ｃｍに生育した稲を刈り取り、その葉、茎を洗浄、蒸し、乾燥、裁断、粉砕して、粒径が５００μｍ以下の粉末とした。この稲の粉末１ｇに椿油１ｇを入れ、十分に混練して美白化粧料を得た。
【００２９】
実施例４
５０〜７０ｃｍに生育した稲を刈り取り、その葉、茎を洗浄、蒸し、乾燥、裁断、粉砕して、粒径が５００μｍ以下の粉末とした。この稲の粉末１ｇに水１ｇを入れ、十分に混練して美白化粧料を得た。
【００３０】
実施例５
実施例１〜４で得た美白化粧料について、シミ、くすみ等の皮膚への色素沈着に対する改善効果及び皮膚刺激性を試験した。この試験は、皮膚のくすみの目立つ４０〜６０歳の女性１０名を被験者として行った。
【００３１】
具体的には、実施例１〜４で得た美白化粧料を、１日１回１晩（５〜８時間）、又は１日１回１５分間、皮膚の色素沈着部分に塗布した。４週間継続して塗布を繰り返した後、目視観察により塗布部のくすみの状態を調べて評価した。その結果を表１、表２に示す。なお、評価基準はつぎのとおりとした。
Ａ：くすみが消滅した。
Ｂ：明らかにくすみが薄くなった。
Ｃ：いくらかくすみが薄くなった。
Ｄ：ほとんど変化が見られなかった。
【００３２】
【表１】

【００３３】
【表２】

【００３４】
表１、表２から明らかなように、油脂を配合した実施例１〜３において、評価ＡとＢの合算が７０％以上となり、特に優れた美白効果が確認された。なお、稲の粉末を水と配合した実施例４においては半数が評価Ｂとなり、実施例１〜３ほどではないにしても、美白効果があることが確認された。
【００３５】
また、米油を配合した実施例２において、最も優れた美白効果が確認された。これは、米油に含まれているγ−オリザノール、フェルラ酸の紫外線を吸収して皮膚を保護する効果や、フェルラ酸によるチロシナーゼ酵素に対する活性阻害、さらにβ−カロチン、ビタミンＥ、ポリフェノール等による活性酸素の抑制効果等に起因するものと思われる。
【００３６】
このように、油脂を配合しない場合でもある程度、美白効果が発揮されるが、特に、米油を初めとする、オリーブ油、椿油等の油脂を配合することにより、美白効果が向上することが確認された。
【００３７】
【発明の効果】
本発明の請求項１記載の美白化粧料は、稲を粉砕又は破砕して得た粉末を含有するから、稲の有する活性酸素消去機能、酸化防止機能、ラジカル消去機能等によって、皮膚の色素沈着、皺等の老化減少が防止され、美白効果に優れる。また、稲の粉末は天然素材であり、合成物質と比較して皮膚に対する安全性が高い。さらに、稲の粉末を用いるので、稲の抽出物を用いる場合と比較して、製法が非常に簡単であり低コストで製造できるとともに、粉末の方が多様な成分を含むため、それぞれの多様な成分の相乗効果によって美白効果が増加するものと期待される。また、オリーブ油又は椿油又は米油からなる油脂を含有するから、オレイン酸を多く含み、保存安定性、加熱安定性に優れる。特に、米油にはγ−オリザノール、フェラル酸等が含まれ、紫外線を吸収するので、日焼け防止効果も期待できる。さらに、前記油脂を２０〜９０重量％含有するから、伸展性に富み、皮膚に塗布しやすく、皮膚への定着性もよい。
【００３８】
本発明の請求項２記載の美白化粧料は、前記請求項１において、前記粉末の粒径は５００μｍ以下であるから、皮膚に塗布した際の有効成分の吸収効果に優れる。
【００３９】
本発明の請求項３記載の美白化粧料は、前記請求項１又は２において、前記粉末を１〜８０重量％含有するから、美白効果が期待できるとともに、皮膚への定着性もよい。[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to a whitening cosmetic which has an excellent whitening effect and is highly safe for skin.
[0002]
[Problems to be solved by the invention]
Conventionally, various whitening cosmetics, skin external preparations, and the like have been known for preventing and eliminating skin pigmentation such as spots and freckles. Recently, from the viewpoint of safety on the skin, a composition containing a plant-derived natural component has been proposed.
[0003]
For example, JP-A-2000-44459 and JP-A-2000-264834 disclose those using a rice bran extract. JP-A-2000-119156 and JP-A-2001-114634 disclose those containing a plant extract.
[0004]
However, plant-derived natural components that are blended in conventional whitening cosmetics and the like are obtained by extraction operations that require complicated operations. As an example of the extraction operation, first, a plant and a solvent are mixed and immersed for several days, and after extracting a natural component, a solid-liquid separation operation such as filtration and centrifugation is performed to remove solids, and then the pH is adjusted. The extract is obtained. Further, there is a method of adjusting the concentration of the obtained extract or pulverizing the extract by a freeze-drying method, a spray-drying method or the like. However, such an extraction operation has not been able to obtain a sufficiently satisfactory whitening effect, although the production method is complicated and the production cost is high.
[0005]
An object of the present invention is to solve the above-mentioned problems, and to provide a whitening cosmetic which is excellent in whitening effect, has high safety to skin, and can be easily produced at low cost.
[0006]
[Means for Solving the Problems]
In view of the above objects, as a result of intensive studies, the present inventors have found that a very high whitening effect can be obtained by powdering rice and applying it to the skin, and arrived at the present invention.
[0007]
The whitening cosmetic according to claim 1 of the present invention contains a powder obtained by crushing or crushing rice, and an oil or fat composed of olive oil, camellia oil or rice oil, and contains 20 to 90% by weight of the oil or fat .
[0008]
Further, in the whitening cosmetic according to the second aspect of the present invention, in the first aspect , the particle size of the powder is 500 μm or less.
[0009]
In addition, the whitening cosmetic according to claim 3 of the present invention contains 1 to 80% by weight of the powder according to claim 1 or 2 .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the whitening cosmetic of the present invention will be described in detail.
[0011]
In the present invention, the powder obtained by crushing or crushing rice is a powder obtained by crushing or crushing rice in a blue state, such as a rice seedling or a green rice. Inexpensive rice, such as surplus rice seedlings generated during rice planting, blue-harvested rice due to shrinkage, germinated seedlings generated from falling rice during rice harvesting, and regenerated rice generated from rice plants after rice harvesting, is extremely inexpensive. Rice powder can be obtained. Note that the rice is not in the yellow state but in the blue (green) state.
[0012]
It is known that rice in the blue state has an active oxygen elimination function, an antioxidant function, a radical elimination function, and the like.
[0013]
The method for producing the rice powder is not particularly limited, but preferably, only the leaves, stems and ears of the rice are used, and after washing, they are brought into contact with steam at 80 to 100 ° C. for 30 seconds to 15 minutes. It is obtained by steaming, drying at 70-80 ° C. for 12-16 hours until the water content is less than 8%, and then crushing or crushing. Alternatively, it may be obtained by crushing or crushing immediately after washing. Here, by contacting with steam, the blue color of rice becomes more vivid, and whitening cosmetics can be colored vivid green. From the viewpoint of the absorption effect of the active ingredient and the whitening effect when applied to the skin, it is preferable that the particle size of the powder is 500 μm or less and the particle size is uniform. Further, by setting the particle size of the powder to 100 μm or less, the absorption effect of the active ingredient and the whitening effect are improved. The content of the powder in the whitening cosmetic is preferably 1 to 80% by weight, and more preferably 40 to 60% by weight. In addition, if the content of the powder is too small, the whitening effect cannot be expected so much. If the content is too large, the extensibility is poor and the fixability to the skin is deteriorated.
[0014]
The fats and oils include any one or more of olive oil, camellia oil and rice oil, and may further include palm oil, soybean oil, coconut oil, cocoa oil and the like. In addition, the kind of fats and oils contained is not limited to these. The content of the fat or oil in the whitening cosmetic is preferably 20 to 90% by weight, more preferably 40 to 60% by weight. In addition, when the content of the fat or oil is too small, the extensibility is poor and it is difficult to apply the composition to the skin. On the other hand, if the amount is too large, it is difficult to uniformly disperse the powder, and the fixability to the skin deteriorates.
[0015]
Olive oil is a pale yellow to pale green yellow oil and fat collected from olive fruits, and contains about 80% of oleic acid as a main component.
[0016]
Camellia oil is a colorless to slightly yellow oil and fat collected from camellia seeds, and contains about 85% of oleic acid as a main component.
[0017]
Rice oil is a pale yellow oil solution obtained from rice bran immediately after milling of rice seeds, and contains about 40% of oleic acid as a main component. Also, oryzanol contained as a component has an effect of protecting the skin by absorbing ultraviolet rays.
[0018]
Oleic acid is a kind of monounsaturated fatty acid and has excellent storage stability and heat stability as compared with polyunsaturated fatty acid, and has an effect of lowering bad cholesterol in blood.
[0019]
The whitening cosmetic of the present invention requires, in addition, a surfactant, a humectant, a thickener, an antiseptic, a powder component, an ultraviolet absorber, a coloring agent, a fragrance, etc., which are contained in ordinary cosmetics. The composition may be appropriately blended according to the requirements, and may be in the form of a cream, an emulsion, a lotion, an ointment, a pack or the like depending on each component.
[0020]
As described in detail above, since the whitening cosmetic of the present invention contains powder obtained by crushing or crushing rice, pigments on the skin are provided by the active oxygen elimination function, antioxidant function, radical elimination function and the like of rice. Prevents aging such as deposition and wrinkles, and is excellent in whitening effect. In addition, rice powder is a natural material and has higher safety to the skin than a synthetic substance. Furthermore, since rice powder is used, the production method is very simple and can be produced at low cost as compared with the case where a rice extract is used. In addition, since powder contains more components, various It is expected that the synergistic effect of the components will increase the whitening effect. In addition, as components of rice which are considered to have a whitening effect, besides ferulic acid, phytic acid, γ-oryzanol, tocotrienol, β-carotene, vitamin E, polyphenol and the like are included.
[0021]
Further, since it contains oils and fats composed of olive oil, camellia oil or rice oil, it contains a large amount of oleic acid and is excellent in storage stability and heat stability. In particular, rice oil contains a large amount of γ-oryzanol and ferulic acid and absorbs ultraviolet rays, so that a sunburn preventing effect can be expected.
[0022]
Further, since the particle size of the powder is 500 μm or less, the powder has an excellent effect of absorbing the active ingredient when applied to the skin.
[0023]
In addition, since the powder is contained in an amount of 1 to 80% by weight, a whitening effect can be expected and the fixability to the skin is good.
[0024]
Furthermore, since the oils and fats are contained in an amount of 20 to 90% by weight, they have excellent extensibility, are easily applied to the skin, and have good fixability to the skin.
[0025]
【Example】
The present invention will be described in more detail with reference to the following specific examples. The present invention is not limited by these examples.
[0026]
Example 1
The rice grown to 50 to 70 cm was cut off, and its leaves and stems were washed, steamed, dried, cut, and pulverized to powder having a particle size of 500 μm or less. 1 g of olive oil was added to 1 g of the rice powder and kneaded well to obtain a whitening cosmetic.
[0027]
Example 2
The rice grown to 50 to 70 cm was cut off, and its leaves and stems were washed, steamed, dried, cut, and pulverized to powder having a particle size of 500 μm or less. 1 g of rice oil was added to 1 g of the rice powder and kneaded well to obtain a whitening cosmetic.
[0028]
Example 3
The rice grown to 50 to 70 cm was cut off, and its leaves and stems were washed, steamed, dried, cut, and pulverized to powder having a particle size of 500 μm or less. 1 g of camellia oil was added to 1 g of this rice powder and kneaded well to obtain a whitening cosmetic.
[0029]
Example 4
The rice grown to 50 to 70 cm was cut off, and its leaves and stems were washed, steamed, dried, cut, and pulverized to powder having a particle size of 500 μm or less. 1 g of water was added to 1 g of the rice powder and kneaded well to obtain a whitening cosmetic.
[0030]
Example 5
The whitening cosmetics obtained in Examples 1 to 4 were tested for the effect of improving pigmentation on the skin such as spots and dullness and the skin irritation. The test was performed on 10 women aged 40 to 60 years with noticeable dull skin.
[0031]
Specifically, the whitening cosmetics obtained in Examples 1 to 4 were applied to the pigmented portion of the skin once a day overnight (5 to 8 hours), or once a day for 15 minutes. After repeating the application continuously for 4 weeks, the state of dullness of the applied portion was examined by visual observation and evaluated. The results are shown in Tables 1 and 2. The evaluation criteria were as follows.
A: The dullness disappeared.
B: The dullness was clearly reduced.
C: Somewhat dullness became thin.
D: Almost no change was observed.
[0032]
[Table 1]

[0033]
[Table 2]

[0034]
As is clear from Tables 1 and 2, in Examples 1 to 3 in which fats and oils were blended, the total of evaluations A and B was 70% or more, and particularly excellent whitening effect was confirmed. In Example 4, in which the rice powder was mixed with water, half of the samples were evaluated as B, and it was confirmed that the whitening effect was obtained even if not as high as Examples 1 to 3.
[0035]
In Example 2 in which rice oil was blended, the most excellent whitening effect was confirmed. This is due to the effect of absorbing gamma-oryzanol and ferulic acid contained in rice oil to protect the skin by absorbing ultraviolet rays, inhibiting the activity of tyrosinase enzyme by ferulic acid, and further increasing the activity by β-carotene, vitamin E, polyphenol, etc. It is thought to be due to the effect of suppressing oxygen and the like.
[0036]
As described above, the whitening effect is exhibited to some extent even when the fats and oils are not blended. In particular, it is confirmed that the blending of fats such as rice oil, olive oil, and camellia oil improves the whitening effect. Was.
[0037]
【The invention's effect】
Since the whitening cosmetic according to claim 1 of the present invention contains a powder obtained by crushing or crushing rice, pigmentation of the skin is achieved by the active oxygen elimination function, antioxidant function, radical elimination function and the like of the rice. Prevention of aging such as wrinkles and the like, and excellent whitening effect. In addition, rice powder is a natural material and has higher safety to the skin than a synthetic substance. Furthermore, since rice powder is used, the production method is very simple and can be produced at low cost as compared with the case where a rice extract is used. In addition, since powder contains more components, various It is expected that the synergistic effect of the components will increase the whitening effect. Further , since it contains oils and fats composed of olive oil, camellia oil or rice oil, it contains a large amount of oleic acid and is excellent in storage stability and heat stability. In particular, rice oil contains γ-oryzanol, ferulic acid and the like and absorbs ultraviolet rays, so that a sunburn preventing effect can be expected. Furthermore, since the oils and fats are contained in an amount of 20 to 90% by weight, they have excellent extensibility, are easily applied to the skin, and have good fixability to the skin.
[0038]
The whitening cosmetic according to claim 2 of the present invention is excellent in the effect of absorbing the active ingredient when applied to the skin since the powder has a particle size of 500 μm or less in claim 1 .
[0039]
The whitening cosmetic according to claim 3 of the present invention contains 1 to 80% by weight of the powder according to claim 1 or 2 , so that a whitening effect can be expected and fixability to the skin is good.

Claims

A whitening cosmetic comprising a powder obtained by crushing or crushing rice and an oil or fat consisting of olive oil, camellia oil or rice oil , wherein the oil or fat is contained in an amount of 20 to 90% by weight .

Whitening cosmetic of claim 1, wherein the particle size of said powder is 500μm or less.

3. The whitening cosmetic according to claim 1, wherein the powder contains 1 to 80% by weight.