JP3803695B2 - Antibacterial preparation - Google Patents
Antibacterial preparation Download PDFInfo
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- JP3803695B2 JP3803695B2 JP31915294A JP31915294A JP3803695B2 JP 3803695 B2 JP3803695 B2 JP 3803695B2 JP 31915294 A JP31915294 A JP 31915294A JP 31915294 A JP31915294 A JP 31915294A JP 3803695 B2 JP3803695 B2 JP 3803695B2
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- arginine
- antibacterial
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- preparation
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- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Cosmetics (AREA)
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Description
【0001】
【産業上の利用分野】
本発明は、抗菌剤が単独では作用しにくいバイオフィルムやプラークなど微生物の集合体や塊に対し優れた抗菌活性を示す抗菌製剤に関する。
【0002】
【従来の技術および問題点】
抗菌剤には種々のタイプのものがあり、それぞれ種々の感染症の予防や治療、医療用具の滅菌、医薬品、食品工場など無菌性が要求される場所の殺菌・消毒などに幅広く用いられている。しかし、その抗菌効果には限界があり、バイオフィルムやプラークなど微生物の集合体や塊に応用した場合や蛋白成分が共存した場合などにはその効果が充分発揮されず、抗菌剤の濃度を上げたり、処理時間を長くするなどの必要があり、安全性、経済性、抗菌効率の面から、必ずしも満足できるものばかりではなかった。
【0003】
【問題点を解決するための手段】
本発明者らはかかる事情に鑑み鋭意検討をかさねた結果、その作用機序は明らかではないが、アルギニンまたはその誘導体と抗菌活性を示す化合物を配合することにより、共存蛋白の影響をほとんど受けず、微生物の懸濁液はもとよりバイオフィルムやプラークなど微生物の集合体や塊に対しても優れた抗菌効果を発揮し、さらにノニオン界面活性剤および両性界面活性剤から選ばれる少なくとも1種の界面活性剤を追加配合することにより、より優れた抗菌効果を発揮することを見出し、本発明を完成するに至った。
【0004】
尚、特開平3ー178926にはアルギニンを配合した口腔用組成物が開示されているが、これはその歯周疾患の慢性炎症時の出血予防、浮腫抑制効果について述べたものであり、本出願の効果を容易に類推できるものではない。以下本発明を具体的に説明する。
【0005】
本発明はアルギニンまたはその誘導体及び抗菌活性を示す化合物を配合することを特徴とする抗菌製剤、さらにはこれらとノニオン界面活性剤および両性界面活性剤から選ばれる少なくとも1種の界面活性剤を配合してなる抗菌製剤を提供するものである。本発明の抗菌製剤は医療用具の滅菌、医薬品、食品工場など無菌性が要求される場所の殺菌・消毒などに利用されるだけでなく、う蝕、歯周病、口内炎などの口腔感染症をはじめとする種々の感染症の原因菌やそれらの菌塊を抑制し、これら感染症の予防や治療およびこれら原因菌が関与した口臭や体臭の抑制に非常に有用である。
【0006】
本発明のアルギニンの誘導体はアルギニンの塩酸塩や燐酸塩、アルギニンエチルエステル、アルギニンメチルエステル、アルギニングルタミン酸、アルギニンアスパラギン酸塩、L−アルギニンリン酸など製造上許容されるものなら何れでもよく、これらを2種以上配合してもかまわない。本発明中アルギニンまたはその誘導体の配合量は抗菌製剤中0.001〜10重量%が好ましく、0.01〜5重量%がより好ましい。0.001重量%未満では本発明の効果が十分得られず、10重量%を越えると製剤上あるいはコスト的に不利である。
【0007】
また本発明の抗菌活性を示す化合物とは塩化セチルピリジニウム、塩化デカリニウム、塩化ベンザルコニウム、クロルヘキシジンの塩酸塩またはグルコン酸塩などのカチオン性の抗菌剤のほか、トリクロサン、イソプロピルメチルフェノール、オフロキサシン、アレキシジン、ヘキセチジン、ヨウ素、ポピヨンヨ−ド、フッカナトリウムやフッカスズ、モノフルオロリン酸ナトリウムなどのフッカ物、チモール、メントール、オイゲノール、タンニン、ポリフェノール、ラタニア、カミツレ、ミルレ、セージ、茶エキス、ヒノキエキス、油溶性甘草エキス、桑白皮エキス、アロエエキス、プロタミン、プロポリス、リゾチームなどの天然抗菌剤、ミノサイクリン、テトラサイクリンなどの抗生物質が挙げられるがこれらに限定されるものではない。好ましくは塩化セチルピリジニウム、トリクロサン、イソプロピルメチルフェノール、フッカナトリウム、フッカスズ、チモール、油溶性甘草エキス、プロポリス、カミツレ、ポリフェノール、桑白皮エキス、アロエエキス、茶エキスである。これらの抗菌剤は単独で、またはこれらを組み合わせて用いることができ、その配合量は抗菌剤の総量で抗菌製剤中0.001〜10重量%が好ましく、0.01〜5重量%がより好ましい。0.001重量%未満では本発明の効果が十分得られず、10重量%を越えると製剤上あるいはコスト的に不利である。
【0008】
本発明で用いるノニオン界面活性剤としては、例えば、ポリエチレンオキシドポリプロピレンオキシドのブロックコポリマー類、ポリオキシエチレンソルビタン脂肪酸エステル類、ソルビタン脂肪酸エステル類、ショ糖脂肪酸エステル、脂肪酸アミドジエタノ−ル、アシルグルコシド、ポリオキシエチレン硬化ヒマシ油などが挙げられるが、特に好ましくは、ポリエチレンオキシドポリプロピレンオキシドのブロックコポリマー類またはショ糖脂肪酸エステルである。
【0009】
両性界面活性剤も特に限定されるものではなく、アルキルベタイン型、アルキルアミドベタイン型、イミダゾリン型、グリシン型などが挙げられる。好ましくは、2ーアルキルーNーカルボキシメチルーNーヒドロキシエチルイミダゾリニウムベタインまたはヤシ油脂肪酸アミドプロピルベタインである。これらのノニオン界面活性剤および両性界面活性剤は単独で、またはこれらを組み合わせて用いることができ、その配合量は界面活性剤の総量として、抗菌製剤全量に基づいて0.005〜5重量%、好ましくは、0.05〜3重量%である。
【0010】
ノニオン界面活性剤と両性界面活性剤を組み合わせて用いる場合、その配合比はノニオン界面活性剤:両性界面活性剤の重量比で1:60から60:1の範囲が好ましい。
【0011】
本発明の抗菌製剤は、常法により製造することができ、液体、液状、ゲル状、ペースト状、ガム状、固形物とすることができる。例えば、口腔に応用する場合には、歯磨(練歯磨、潤性歯磨、液状歯磨、液体歯磨、マウスウオッシュ等)、ペースト状組成物(例えば、口腔用パスタ、歯肉マッサージクリーム等)、口腔清涼剤(例えば錠剤、スプレ−等)、イリゲーター用溶液等の形態にすることができる。更に、前記の成分に加え、抗菌製剤の形態に応じて通常の有効基剤を用いてもよい。例えば、トラネキサム酸、グリチルリチン酸ジカリウム、ビタミンE、アズレンなどの薬効剤やその他界面活性剤、溶剤、pH調整剤、防腐剤、甘味剤、香料、粘結剤、研磨剤等を配合することができる。
【0012】
【実施例】
次に、実験例および実施例を挙げて本発明をさらに詳しく説明する。実験例においては、本発明の抗菌性剤の有する微生物の集合体や塊に対する抗菌活性を評価した。
【0013】
実験例1
方法:
Staphylococcus aureus ATCC6538菌株をTrypticase soy broth(TSB)培地100mlで37℃、24時間培養後、遠心(7000rpm,5min)洗浄、滅菌蒸留水に懸濁したものを試験菌液とした。
【0014】
この試験菌液10mlをメンブランフィルター(直径10mm,ポアサイズ0.45μm、ミリポア社製)に吸引固着させたものを微生物の菌塊モデルとした。
【0015】
この菌塊モデルを塩化セチルピリジニウム(CPCと略す)溶液、塩化セチルピリジニウムとアルギニン(ARGと略す)の混合溶液、あるいはこれらにプルロニック(PLUと略す)を加えた溶液中に一定時間浸漬し、滅菌蒸留水で軽く洗浄後、10mlの滅菌蒸留水中でVortex mixerにより分散し、この一白金耳をTrypticase soy agar(TSA)培地に塗抹、37℃で24時間培養後、生育の有無を肉眼で判定した。
【0016】
結果を表1に示す。
【0017】
【表1】
組成No.1に対し、組成No.2から7において示されるように、ARGの添加あるいはARGとPLUの両方の添加により殺菌に必要な時間が短縮され、優れた抗菌効果が認められた。しかし、対照である組成8、9においてはなんら抗菌効果は認められなかった。
【0018】
実験例2
方法:
試験菌をStreptococcus mutans ATCC25175とし、抗菌剤としてチモ−ル、界面活性剤としてショ糖脂肪酸エステル(SFEと略す)を用い、実験例1と同様な実験を行なった。
【0019】
結果を表2に示す。
【0020】
【表2】
組成No.1に対し、組成No.2から7において示されるように、ARGの添加あるいはARGとSFEの両方の添加により殺菌に必要な時間が短縮され、優れた抗菌効果が認められた。しかし、対照である組成8、9においてはなんら抗菌効果は認められなかった。
【0021】
実験例3
方法:
試験菌としてEscherichia coli K12を用い、種々の抗菌剤とアルギニン塩酸塩(ARG−Cl)の組み合わせ溶液の抗菌活性を実験例1と同様な方法により評価した。
【0022】
結果を表3に示す。
【0023】
【表3】
いずれの組み合わせにおいても、抗菌剤単独に比べアルギニン塩酸塩の添加により、殺菌に要する時間が短縮され、優れた抗菌活性が発揮されることが認められた。
【0024】
実験例4
方法:
Porphyromonas gingivalis 381菌株を5μg/mlヘミンと1μg/mlメナジオンを添加したBrain Heart Infusin(BHI)培地100mlで37℃48時間嫌気培養後、菌液1mlを47℃に保温した1.5%寒天を含むBHI20mlに混釈し、直径10cmシャーレに分注、冷却した菌入りプレートを作成した。本プレート上に内径8mm、高さ1cmのステンレス製円筒をたて、それに種々の抗菌剤とアルギニン塩酸塩(ARG−Cl)およびプルロニック(PLU)の組み合わせ溶液を満たし、37℃48時間嫌気培養後、形成された発育阻止帯の直径を測定した。
【0025】
結果を表4に示す。
【0026】
【表4】
いずれの組み合わせにおいても、抗菌剤単独に比べアルギニン塩酸塩(ARG−Cl)の添加およびプルロニック(PLU)の添加により、発育阻止帯の直径が大きくなり、優れた抗菌活性が発揮されることが認められた。
実施例1
殺菌・消毒液 配合量(重量%)
クロルヘキシジングルコネート 5.0
アルギニン 1.0
ショ糖脂肪酸エステル 2.0
ヤシ油脂肪酸アミドプロピルベタイン0.2
香料 0.5
精製水 残量
実施例2
うがい薬 配合量(重量%)
イソプロピルメチルフェノール 0.2
アルギニン燐酸塩 0.05
精製水 残量
実施例3
洗口液 配合量(重量%)
塩化セチルピリジニウム 0.2
アルギニン塩酸塩 1.0
エタノール 7.0
プルロニック 1.0
香料 1.0
精製水 残量
実施例4
練歯磨 配合量(重量%)
トリクロサン 0.05
フッカナトリウム 0.1
アルギニンメチルエステル 0.05
グリセリン 40.0
シリカ 20.0
ラウリル硫酸ナトリウム 1.0
香料 1.0
色素 1.0
精製水 残量
実施例5
イリゲーション液 配合量(重量%)
チモール 0.2
フッカ第一スズ 0.2
アルギニンエチルエステル 5.0
ビタミンE 0.1
香料 1.0
精製水 残量
実施例6
口腔用パスタ 配合量(重量%)
ミノサイクリン 3.0
アルギニングルタミン酸 1.0
トラネキサム酸 0.05
香料 1.0
白色ワセリン 残量
【0027】
【発明の効果】
本発明によれば、共存蛋白の影響をほとんど受けず、微生物の懸濁液はもとよりバイオフィルムやプラークなど微生物の集合体や塊に対しても優れた抗菌効果を発揮する抗菌製剤を得ることができる。[0001]
[Industrial application fields]
The present invention relates to an antibacterial preparation exhibiting an excellent antibacterial activity against a collection or agglomeration of microorganisms such as biofilms and plaques to which an antibacterial agent is difficult to act alone.
[0002]
[Prior art and problems]
There are various types of antibacterial agents, each of which is widely used for the prevention and treatment of various infectious diseases, sterilization of medical equipment, sterilization and disinfection in places where sterility is required such as pharmaceuticals and food factories. . However, its antibacterial effect is limited, and when it is applied to an aggregate or mass of microorganisms such as biofilms or plaques, or when a protein component coexists, its effect is not fully exhibited, and the concentration of the antibacterial agent is increased. In addition, it is not always satisfactory in terms of safety, economy, and antibacterial efficiency.
[0003]
[Means for solving problems]
As a result of intensive investigations in view of such circumstances, the present inventors have found that the mechanism of action is not clear, but by incorporating arginine or a derivative thereof and a compound exhibiting antibacterial activity, the present invention is hardly affected by the coexisting protein. In addition to microbial suspensions, it exhibits excellent antibacterial effects on microbial aggregates and clumps such as biofilms and plaques, and at least one surfactant selected from nonionic surfactants and amphoteric surfactants It has been found that by adding an additional agent, a superior antibacterial effect is exhibited, and the present invention has been completed.
[0004]
JP-A-3-178926 discloses an oral composition containing arginine, which describes the effect of preventing bleeding and suppressing edema during chronic inflammation of periodontal disease. It is not easy to guess the effect of. The present invention will be specifically described below.
[0005]
The present invention comprises an antibacterial preparation characterized in that it contains arginine or a derivative thereof and a compound exhibiting antibacterial activity, and further contains at least one surfactant selected from nonionic surfactants and amphoteric surfactants. An antibacterial preparation is provided. The antibacterial preparation of the present invention is not only used for sterilization of medical equipment, sterilization and disinfection in places where sterility is required, such as pharmaceuticals and food factories, but also for oral infections such as caries, periodontal disease and stomatitis. It is useful for the prevention and treatment of these infectious diseases and the suppression of halitosis and body odor associated with these infectious diseases by suppressing the causative bacteria and their masses of various infectious diseases.
[0006]
The arginine derivative of the present invention may be any arginine hydrochloride or phosphate, arginine ethyl ester, arginine methyl ester, arginine glutamic acid, arginine aspartate, L-arginine phosphoric acid or the like which is acceptable in production. Two or more kinds may be blended. In the present invention, the blending amount of arginine or a derivative thereof is preferably 0.001 to 10% by weight, more preferably 0.01 to 5% by weight in the antibacterial preparation. If it is less than 0.001% by weight, the effects of the present invention cannot be sufficiently obtained, and if it exceeds 10% by weight, it is disadvantageous in terms of preparation or cost.
[0007]
The compounds showing antibacterial activity of the present invention include cationic antibacterial agents such as cetylpyridinium chloride, decalinium chloride, benzalkonium chloride, chlorhexidine hydrochloride or gluconate, triclosan, isopropylmethylphenol, ofloxacin, alexidine , Hexetidine, Iodine, Popyon Yod, Fukka sodium and Fukka tin, Hooka such as sodium monofluorophosphate, Thymol, Menthol, Eugenol, Tannin, Polyphenol, Latania, Chamomile, Mirle, Sage, Tea extract, Hinoki extract, Oil soluble Natural antibacterial agents such as licorice extract, mulberry bark extract, aloe extract, protamine, propolis, lysozyme, and antibiotics such as minocycline, tetracycline, but are not limited to these There. Preferred are cetylpyridinium chloride, triclosan, isopropylmethylphenol, fucca sodium, fukka tin, thymol, oil-soluble licorice extract, propolis, chamomile, polyphenol, mulberry bark extract, aloe extract, and tea extract. These antibacterial agents can be used alone or in combination, and the amount of the antibacterial agent is preferably 0.001 to 10% by weight, more preferably 0.01 to 5% by weight, based on the total amount of the antibacterial agent. . If it is less than 0.001% by weight, the effects of the present invention cannot be sufficiently obtained, and if it exceeds 10% by weight, it is disadvantageous in terms of preparation or cost.
[0008]
Nonionic surfactants used in the present invention include, for example, block copolymers of polyethylene oxide polypropylene oxide, polyoxyethylene sorbitan fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, fatty acid amide diethanol, acyl glucoside, polyoxy Examples thereof include ethylene hydrogenated castor oil, and particularly preferred are block copolymers of polyethylene oxide polypropylene oxide or sucrose fatty acid esters.
[0009]
The amphoteric surfactant is not particularly limited, and examples thereof include an alkylbetaine type, an alkylamide betaine type, an imidazoline type, and a glycine type. Preferred is 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine or coconut oil fatty acid amidopropyl betaine. These nonionic surfactants and amphoteric surfactants can be used alone or in combination, and the blending amount is 0.005 to 5% by weight based on the total amount of the antibacterial preparation, Preferably, it is 0.05 to 3% by weight.
[0010]
When a nonionic surfactant and an amphoteric surfactant are used in combination, the blending ratio is preferably in the range of 1:60 to 60: 1 by weight ratio of nonionic surfactant: amphoteric surfactant.
[0011]
The antibacterial preparation of the present invention can be produced by a conventional method, and can be made into a liquid, liquid, gel, paste, gum or solid. For example, for application to the oral cavity, toothpaste (toothpaste, moisturized toothpaste, liquid toothpaste, liquid toothpaste, mouthwash, etc.), paste-like composition (e.g., oral pasta, gingival massage cream, etc.), oral refreshing agent (For example, a tablet, a spray, etc.), a solution for an irrigator, etc. can be used. Furthermore, in addition to the above components, a normal effective base may be used depending on the form of the antibacterial preparation. For example, medicinal agents such as tranexamic acid, dipotassium glycyrrhizinate, vitamin E, and azulene, other surfactants, solvents, pH adjusters, preservatives, sweeteners, fragrances, binders, abrasives, and the like can be blended. .
[0012]
【Example】
Next, the present invention will be described in more detail with reference to experimental examples and examples. In the experimental examples, the antibacterial activity against the aggregates and masses of microorganisms possessed by the antibacterial agent of the present invention was evaluated.
[0013]
Experimental example 1
Method:
Staphylococcus aureus ATCC 6538 strain was cultured in 100 ml of Trypticase soy broth (TSB) medium at 37 ° C. for 24 hours, washed with centrifugation (7000 rpm, 5 min), and suspended in sterilized distilled water to obtain a test bacterial solution.
[0014]
A solution obtained by sucking and fixing 10 ml of the test bacterial solution on a membrane filter (diameter 10 mm, pore size 0.45 μm, manufactured by Millipore) was used as a microbial mass cluster model.
[0015]
This bacterial mass model is immersed in a cetylpyridinium chloride (abbreviated as CPC) solution, a mixed solution of cetylpyridinium chloride and arginine (abbreviated as ARG), or a solution obtained by adding pluronic (abbreviated as PLU) for a certain period of time, and sterilized. Lightly washed with distilled water, dispersed in 10 ml of sterilized distilled water with a vortex mixer, smeared this platinum loop onto Trypticase soy agar (TSA) medium, cultured at 37 ° C. for 24 hours, and then visually assessed for growth. .
[0016]
The results are shown in Table 1.
[0017]
[Table 1]
Composition No. 1, composition no. As shown in 2 to 7, the time required for sterilization was shortened by adding ARG or both ARG and PLU, and an excellent antibacterial effect was recognized. However, no antibacterial effect was observed in the compositions 8 and 9 as controls.
[0018]
Experimental example 2
Method:
Experiments were carried out in the same manner as in Experimental Example 1 using Streptococcus mutans ATCC 25175, timole as the antibacterial agent, and sucrose fatty acid ester (abbreviated as SFE) as the surfactant.
[0019]
The results are shown in Table 2.
[0020]
[Table 2]
Composition No. 1, composition no. As shown in 2 to 7, the addition of ARG or the addition of both ARG and SFE shortened the time required for sterilization, and an excellent antibacterial effect was recognized. However, no antibacterial effect was observed in the compositions 8 and 9 as controls.
[0021]
Experimental example 3
Method:
Escherichia coli K12 was used as a test bacterium, and the antibacterial activity of a combination solution of various antibacterial agents and arginine hydrochloride (ARG-Cl) was evaluated by the same method as in Experimental Example 1.
[0022]
The results are shown in Table 3.
[0023]
[Table 3]
In any combination, it was confirmed that addition of arginine hydrochloride shortened the time required for sterilization and exhibited excellent antibacterial activity as compared with the antibacterial agent alone.
[0024]
Experimental Example 4
Method:
Contains anaerobic culture of Porphyromonas gingivalis 381 strain in 100 ml of Brain Heart Infusin (BHI) medium supplemented with 5 μg / ml hemin and 1 μg / ml menadione at 37 ° C. for 48 hours, and 1.5% agar in which 1 ml of the bacterial solution is kept at 47 ° C. Poured into 20 ml of BHI, dispensed into a petri dish with a diameter of 10 cm, and prepared a plate containing cooled bacteria. A stainless steel cylinder having an inner diameter of 8 mm and a height of 1 cm is formed on this plate, filled with a combination of various antibacterial agents, arginine hydrochloride (ARG-Cl) and pluronic (PLU), and after anaerobic culture at 37 ° C. for 48 hours. The diameter of the formed stunt zone was measured.
[0025]
The results are shown in Table 4.
[0026]
[Table 4]
In any combination, the addition of arginine hydrochloride (ARG-Cl) and the addition of pluronic (PLU), compared to the antibacterial agent alone, increases the diameter of the growth inhibitory zone, and exhibits excellent antibacterial activity. It was.
Example 1
Disinfectant / disinfectant formulation amount (% by weight)
Chlorhexidine gluconate 5.0
Arginine 1.0
Sucrose fatty acid ester 2.0
Palm oil fatty acid amidopropyl betaine 0.2
Fragrance 0.5
Purified water remaining amount example 2
Mouthwash compounding amount (wt%)
Isopropylmethylphenol 0.2
Arginine phosphate 0.05
Purified water remaining amount example 3
Mouthwash amount (wt%)
Cetylpyridinium chloride 0.2
Arginine hydrochloride 1.0
Ethanol 7.0
Pluronic 1.0
Fragrance 1.0
Purified water remaining amount example 4
Toothpaste amount (% by weight)
Triclosan 0.05
Fucca sodium 0.1
Arginine methyl ester 0.05
Glycerin 40.0
Silica 20.0
Sodium lauryl sulfate 1.0
Fragrance 1.0
Dye 1.0
Purified water remaining amount example 5
Blending amount of irrigation solution (wt%)
Timor 0.2
Fukka stannous 0.2
Arginine ethyl ester 5.0
Vitamin E 0.1
Fragrance 1.0
Purified water remaining amount example 6
Oral pasta content (wt%)
Minocycline 3.0
Arginning glutamic acid 1.0
Tranexamic acid 0.05
Fragrance 1.0
White petrolatum remaining [0027]
【The invention's effect】
According to the present invention, it is possible to obtain an antibacterial preparation that exhibits an excellent antibacterial effect not only on microbial suspensions but also on microbial suspensions as well as microbial aggregates and clumps such as biofilms and plaques. it can.
Claims (3)
Priority Applications (1)
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JP31915294A JP3803695B2 (en) | 1994-11-28 | 1994-11-28 | Antibacterial preparation |
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JP31915294A JP3803695B2 (en) | 1994-11-28 | 1994-11-28 | Antibacterial preparation |
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JPH08151324A JPH08151324A (en) | 1996-06-11 |
JP3803695B2 true JP3803695B2 (en) | 2006-08-02 |
Family
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JP5872430B2 (en) * | 2012-09-20 | 2016-03-01 | 日本電子照射サービス株式会社 | Chlorhexidine gluconate formulation, disinfection kit and sterilization method |
WO2014088535A1 (en) | 2012-12-03 | 2014-06-12 | Colgate-Palmolive Company | Compositions and methods for treating dental caries |
JP6349709B2 (en) * | 2013-12-12 | 2018-07-04 | ライオン株式会社 | Oral composition |
JP6745091B2 (en) * | 2015-05-13 | 2020-08-26 | ロート製薬株式会社 | Biofilm formation inhibitor |
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1994
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