JP5603701B2 - 抗菌性組成物及びその用途 - Google Patents
抗菌性組成物及びその用途 Download PDFInfo
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- 230000000844 anti-bacterial effect Effects 0.000 title claims description 80
- 239000000203 mixture Substances 0.000 title claims description 79
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 71
- 229910052709 silver Inorganic materials 0.000 claims description 65
- 239000004332 silver Substances 0.000 claims description 65
- DDRJAANPRJIHGJ-UHFFFAOYSA-N creatinine Chemical compound CN1CC(=O)NC1=N DDRJAANPRJIHGJ-UHFFFAOYSA-N 0.000 claims description 56
- 229940109239 creatinine Drugs 0.000 claims description 28
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 claims description 19
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- 150000001875 compounds Chemical class 0.000 claims description 10
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Landscapes
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Description
特開2009−082064号公報に記載の方法に準じた。グルコースを出発物質として大腸菌XL1−Blue株(STRATEGENE, CA, USA)にPDCの発酵生産プラスミドpCDFDuet−qutC及びpULABCを導入した形質転換細胞を培養後、PDCを抽出した。
1.PDC銀及びクレアチニンを含有する抗菌性組成物の調製
調製例で得たPDC一銀0.100g(0.324mmol)、及びクレアチニン0.146g(1.30mmol、和光純薬工業株式会社)を水100mlに溶解し、銀濃度が3.24mM、クレアチニン/銀のモル比が4の組成物(実施例1)を得た。また、PDC一銀(0.324mmol)をPDC二銀0.670g(0.162mmol)とする以外は実施例1と同様の方法で銀濃度が3.24mMでクレアチニン/銀のモル比が4の組成物(実施例2)を調製した。
上記抗菌性組成物の抗菌効果を確認するため、以下の菌種:
(細菌)
1.黄色ブドウ球菌(Staphylococcus aureus subsp. Aureus、NBRC13276)、
2.大腸菌(Escherichia coli、NBRC3972)、及び、
(真菌)
1.クロコウジカビ(Aspergillus niger、NBRC9455)
に対するMIC(最小発育阻止濃度)を測定した。
本発明の抗菌性組成物の抗菌効果をさらに確認するため、以下の真菌:
クロカワカビ(Cladosporium cladosporioides JCM 3899)
に対するMIC(最小発育阻止濃度)の測定を行った。比較のため、比較例1(硝酸銀3.24mM)、比較例2(PDC一銀3.24mM)及び比較例3(PDC二銀1.62mM)についても、それぞれ同様の測定を行った。
本発明の抗菌性組成物の光安定性を、溶液及び乾固状態で確認した。
実施例1及び2、並びに比較例2及び3を、それぞれ、孔径0.20μmのメンブレンフィルター(製品名:マイレクスLG、日本ミリポア株式会社製)を通して不溶物を除去した。次いで、各溶液10mlをそれぞれガラス製バイアル瓶(20ml容量)に入れ、蓋をせずに高エネルギー紫外光源の下に設置した。光源として、東芝ライテック株式会社製殺菌ランプGL−15(殺菌線出力4.9W、紫外線放射強度51μW/cm2)を使用した。光源と溶液(液面)との距離は4cmとした。12時間毎に、各溶液に変色又は析出物の発生が起こるかを、以下の基準で観察した。結果を表3に示す。
○:変色又は析出物の発生が認められなかった。
×:変色又は析出物の発生が認められた。
各溶液0.05mlをスライドグラス上に滴下し、50℃、減圧下で揮発分を除去して乾燥した試験体を得た。この試験体を上記紫外光源下(光源と試験体との距離:6cm)に設置した。60分までの変色を、以下の基準で観察した。結果を表3に示す。
☆:透明
◎:半透明
○:白色
×:黄色、褐色、灰色、黒色等に着色
実施例1において、クレアチニンに代えて、化学式:
実施例1でのクレアチニン配合量を、表5に示すように変えた以外は実施例1と同様の手順で組成物を調製した。各組成物の耐光性試験の結果を表5に示す。
実施例1において、PDC銀及びクレアチニンの濃度を5倍とする以外は、実施例1と同様の手順で組成物を調製し、PDC一銀濃度16.2mM、そしてクレアチニン/銀のモル比4の組成物(実施例10)を得た。同様に、比較例2においてPDC一銀の濃度を5倍とする以外は、比較例2と同様の手順で組成物を調製し、PDC一銀濃度16.2mMでクレアチニンを含まない組成物(比較例10)を得た。
実施例11及び比較例11の除菌剤10mlを、それぞれ、20mlのガラス製バイアル瓶に入れ、蓋をせずに前記紫外光源下(光源と液面との距離:4cm)に設置した。10分後に変色又は析出物の発生が起こるかを、以下の基準で観察した。結果を表6に示す。
○:変化なし
×:変色又は析出あり
××:著しい変色又は析出あり
実施例11及び比較例11の除菌剤0.05mlを、それぞれ、スライドグラス上に滴下し、室温で1日間放置して、揮発分を除去した乾燥試験体を得た。この試験体を室温下で更に3日間放置し、変色を以下の基準で観察した。結果を表6に示す。
○:変色なし
×:変色あり
実施例11の除菌剤を、塗装鋼板上に0.1g/25cm2噴霧をした。室温で、噴霧1時間後及び7日後に、塗装鋼板上の生菌数を環境微生物検査用試薬(製品名:ぺたんチェック(登録商標)10、栄研科学株式会社製)を用いてカウントした。比較として、99.5%エタノールを実施例11と同様の操作で評価した(比較例12)。結果を表7に示す。
市販の液体合成洗剤(製品名:トップ NANOX(ナノックス)、ライオン株式会社製)80mlに、実施例10の組成物を20ml添加することにより、銀濃度3.24mMの洗浄剤を調製した(実施例12)。同様に、前記液体合成洗剤80mlに比較例10の組成物20ml添加することにより、銀濃度3.24mMの洗浄剤を調製した(比較例13)。
市販の合成樹脂塗料(製品名:水性多用途、株式会社アサヒペン製)80mlに、実施例10の組成物を20ml添加することにより、銀濃度3.24mMの塗料を調製した(実施例13)。同様に、前記合成樹脂塗料80mlに比較例10の組成物20mlを添加することにより、銀濃度3.24mMの塗料を調製した(比較例14)。
市販の特殊変性酢酸ビニル・アクリル共重合樹脂エマルジョン系接着剤(製品名:VW−H−135、株式会社J−ケミカル製)80mlに、実施例10の組成物を20ml添加することにより、銀濃度3.24mMの接着剤を調製した(実施例14)。同様に、上記エマルジョン系接着剤80mlに比較例10の組成物を20ml添加することにより、銀濃度3.24mMの接着剤を調製した(比較例15)。
実施例1の組成物を水で20倍に希釈して抗菌加工処理剤を調製した(実施例15)。同様に、比較例2の組成物を水で20倍に希釈して抗菌加工処理剤を調製した(比較例16)。実施例15又は比較例16の処理剤を入れたビーカーに8cm×8cmの綿布を浸漬して抗菌加工処理剤を約0.8g付着させ、105℃の乾燥機内で乾燥させた。
○:変色なし
×:変色あり
Claims (6)
- 2H−ピラン−2−オン−4,6−ジカルボン酸の銀塩又は銀錯体、そのモノエステル体若しくはモノアミド体からなる誘導体の銀塩又は銀錯体のいずれか1種以上の化合物及びクレアチニンを含有する抗菌性組成物であって、前記化合物中の銀(A)とクレアチニン(B)とのモル比(B)/(A)が、2〜80であることを特徴とする、前記抗菌性組成物。
- 請求項1に記載の抗菌性組成物を含有する除菌剤又は消臭剤。
- 請求項1に記載の抗菌性組成物を含有する洗浄剤。
- 請求項1に記載の抗菌性組成物を含有する塗料。
- 請求項1に記載の抗菌性組成物を含有する接着又は粘着剤。
- 請求項1に記載の抗菌性組成物を含有する繊維抗菌加工処理剤。
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