JP6927512B2 - 物体表面の抗菌性試験用菌液媒体 - Google Patents
物体表面の抗菌性試験用菌液媒体 Download PDFInfo
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- JP6927512B2 JP6927512B2 JP2017065439A JP2017065439A JP6927512B2 JP 6927512 B2 JP6927512 B2 JP 6927512B2 JP 2017065439 A JP2017065439 A JP 2017065439A JP 2017065439 A JP2017065439 A JP 2017065439A JP 6927512 B2 JP6927512 B2 JP 6927512B2
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- antibacterial
- bacterial solution
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- glycerin
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- 230000000844 anti-bacterial effect Effects 0.000 title claims description 38
- 238000012360 testing method Methods 0.000 title claims description 23
- 230000001580 bacterial effect Effects 0.000 title claims description 22
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 28
- 241000894006 Bacteria Species 0.000 claims description 19
- 235000011187 glycerol Nutrition 0.000 claims description 14
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 11
- 239000000661 sodium alginate Substances 0.000 claims description 11
- 235000010413 sodium alginate Nutrition 0.000 claims description 11
- 229940005550 sodium alginate Drugs 0.000 claims description 11
- 235000010443 alginic acid Nutrition 0.000 claims description 10
- 229920000615 alginic acid Polymers 0.000 claims description 10
- 239000000783 alginic acid Substances 0.000 claims description 9
- 229960001126 alginic acid Drugs 0.000 claims description 9
- 150000004781 alginic acids Chemical class 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000011941 photocatalyst Substances 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 239000003242 anti bacterial agent Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 1
- 241000192125 Firmicutes Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 241000191963 Staphylococcus epidermidis Species 0.000 description 1
- 229940072056 alginate Drugs 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salts Chemical class 0.000 description 1
- 229940041514 candida albicans extract Drugs 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000000737 potassium alginate Substances 0.000 description 1
- 235000010408 potassium alginate Nutrition 0.000 description 1
- MZYRDLHIWXQJCQ-YZOKENDUSA-L potassium alginate Chemical compound [K+].[K+].O1[C@@H](C([O-])=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C([O-])=O)O[C@@H](O)[C@@H](O)[C@H]1O MZYRDLHIWXQJCQ-YZOKENDUSA-L 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000012137 tryptone Substances 0.000 description 1
- 239000012138 yeast extract Substances 0.000 description 1
Landscapes
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Catalysts (AREA)
Description
試験片として、光触媒(二酸化チタン)を練り込んだプラスチックフィルムと、光触媒を練り込んでいないプラスチックフィルムを用いた。0.18wt/v%のムチンと、36v/v%のグリセリンと、0.36wt/v%のアルギン酸ナトリウムと、5v/v%のLB培地との混合物を媒体として用いた。大腸菌NBRC3972株を、この媒体中に浮遊させ、各試験片に表1に示す塗布量で各試験片に塗布した。浮遊した大腸菌の数(cfu)も表1に併せて示す。各試験片について、塗布直後(0h)の生菌数、1000ルクスの可視光を4時間(4h)照射した後の生菌数、及び暗所で4時間(4h)放置した後の生菌数を測定した。結果を表1に示す。
グリセリンを含まないこと以外は実施例1と同じ媒体を用いて実施例1と同様な試験(ただし、暗所放置はなし)を行った。結果を表2に示す。表2から、グリセリンを含まない場合には評価が行えないことがわかる。
実施例1から各成分の濃度を変更して実施例1と同様な試験(ただし、暗所放置はなし)を行った。すなわち、0.18wt/v%のムチンと、27v/v%のグリセリンと、0.18wt/v%のアルギン酸ナトリウムと、10v/v%のLB培地との混合物(B、実施例2)、及び0.18wt/v%のムチンと、36v/v%のグリセリンと、0.18wt/v%のアルギン酸ナトリウムと、10v/v%のLB培地との混合物(C、実施例3)を媒体として用いて試験を行った。
ムチンを添加しないことを除き、実施例1と同じ組成の媒体を作製し、実施例1と同様に試験に供した(ただし、暗所放置はなし)。結果を表4に示す。表4に示されるように、ムチンを含まない場合には、光照射前でも生菌数が減少していた。
ムチン濃度が0.45wt/v%となる、以下の組成の媒体を作製した。すなわち、0.45wt/v%のムチンと、27v/v%のグリセリンと、0.18wt/v%のアルギン酸ナトリウムと、10v/v%のLB培地との混合物を作製し、これを媒体として用いて実施例1と同様な試験を行った(ただし、暗所放置はなし。また、1000ルクス4時間の光照射を2回繰り返した)。結果を下記表5に示す。表5に示すように、光照射0時間における回収率(計算上の塗布菌数に対する測定された生菌数の比)が高くなっており、ムチンにより菌の塊が形成されたものと推測される。
アルギン酸ナトリウムを添加しないことを除き実施例1と同じ組成の媒体(A、比較例4)、及びLB培地を添加しないことを除き実施例1と同じ組成の媒体(B、比較例5)を作製し、実施例1と同様な試験(ただし、暗所放置はなし)を行った。結果を下記表6に示す。表6に示されるように、アルギン酸ナトリウムを含まない場合には、抗菌加工していない無加工フィルム上に4時間放置後の生菌数が減少しすぎていた。また、LB培地を含まない場合には、光照射前の光触媒フィルム上での生菌数が減少しすぎていた。
5v/v%LB培地に代えて、0.2v/v%NB培地を添加したことを除き実施例1と同じ組成の媒体を作製し、実施例1と同様な試験(ただし、暗所放置はなし)を行った。結果を下記表7に示す。表7に示されるように、また、LB培地をNB培地に変えた場合には、光照射前の光触媒フィルム上での生菌数が減少しすぎていた。
Claims (4)
- 水中に、20〜60v/v%のグリセリンと、0.1〜0.4wt/v%のムチンと、0.1〜0.8wt/v%のアルギン酸又はその塩と、2〜10v/v%のLB培地とを含む、物体表面の、グラム陰性菌に対する抗菌性試験用菌液媒体。
- 水中に、30〜40v/v%のグリセリンと、0.15〜0.25wt/v%のムチンと、0.3〜0.5wt/v%アルギン酸又はその塩と、4〜6v/v%のLB培地とを含む、請求項1記載の菌液媒体。
- 前記アルギン酸又はその塩がアルギン酸ナトリウムである請求項1又は2記載の菌液媒体。
- 水中に、36v/v%のグリセリンと、0.18wt/v%のムチンと、0.36wt/v%のアルギン酸ナトリウムと、5v/v%のLB培地とを含む、請求項3記載の菌液媒体。
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KR19990008000A (ko) * | 1995-04-24 | 1999-01-25 | 로버트 에스. 화이트 헤드 | 새로운 대사 경로를 만들고 이를 스크리닝하는 방법 |
RU2527894C2 (ru) * | 2007-11-27 | 2014-09-10 | Альгифарма ИПР АС | Использование альгинатных олигомеров в борьбе с биопленками |
BR112015018625A2 (pt) * | 2013-02-04 | 2017-09-19 | Seres Therapeutics Inc | composições e métodos |
JP6451956B2 (ja) * | 2014-08-18 | 2019-01-16 | パナソニックIpマネジメント株式会社 | 抗菌試験液、抗菌試験液付着装置、及び抗菌試験方法 |
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