Nanomaterials:纳米金刚石和氧化石墨烯对大肠杆菌的抑制作用可受LB培养基增强

2018-03-09 MedSci MedSci原创

纳米金刚石(ND)和氧化石墨烯(GO)是现代碳基纳米材料,具有抑制微生物生长的能力。本研究中,研究人员对比了纳米金刚石和两种氧化石墨烯(氧化型和还原型)在两种培养基-Luria-Bertani(LB)和Mueller-Hinton(MH)肉汤中的作用。结果显示,与对照组相比,LB培养基中所有纳米材料处理后大肠杆菌的菌落形成单位(CFU)数量明显降低(45%),且至少24小时。相反,MH培养基中仅氢

纳米金刚石(ND)和氧化石墨烯(GO)是现代碳基纳米材料,具有抑制微生物生长的能力。本研究中,研究人员对比了纳米金刚石和两种氧化石墨烯(氧化型和还原型)在两种培养基-Luria-Bertani(LB)和Mueller-Hinton(MH)肉汤中的作用。

结果显示,与对照组相比,LB培养基中所有纳米材料处理后大肠杆菌的菌落形成单位(CFU)数量明显降低(45%),且至少24小时。相反,MH培养基中仅氢化ND处理过的大肠杆菌生长明显抑制抑制(45%)。使用咸琼脂不能增强所用纳米材料的抑制作用,即细菌膜的破坏或离子浓度的差异在所用纳米材料的杀菌作用中不起任何作用。

因此,由于ND和GO在提高GO纳米片对细菌氧化应激或可能包裹细菌作用方面发挥特殊作用,因而建议将其从环境和营养中分离出来。此外,红外光谱,光电子能谱,扫描电子显微镜和动态光散射分析证实了这些结论。

原始出处:

Jira J, Rezek B, et al., Inhibition of E. coli Growth by Nanodiamond and Graphene Oxide Enhanced by Luria-Bertani Medium. Nanomaterials (Basel). 2018 Mar 1;8(3). pii: E140. doi: 10.3390/nano8030140.

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    2018-03-10 xiaotaiyang1

    看看了解一下.谢谢分享

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1706966, encodeId=02a51e06966aa, content=<a href='/topic/show?id=d2773359191' target=_blank style='color:#2F92EE;'>#化石#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33591, encryptionId=d2773359191, topicName=化石)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f4d531331396, createdName=ms7899726347904398, createdTime=Wed May 23 23:31:00 CST 2018, time=2018-05-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1651550, encodeId=85a116515506e, content=<a href='/topic/show?id=6e78e32573c' target=_blank style='color:#2F92EE;'>#石墨烯#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73257, encryptionId=6e78e32573c, topicName=石墨烯)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db924213398, createdName=yangjxjc, createdTime=Sat Aug 04 02:31:00 CST 2018, time=2018-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1635440, encodeId=48621635440bf, content=<a href='/topic/show?id=b099549160a' target=_blank style='color:#2F92EE;'>#抑制作用#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54916, encryptionId=b099549160a, topicName=抑制作用)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6cd322475383, createdName=124987a0m73(暂无昵称), createdTime=Sat Jun 16 09:31:00 CST 2018, time=2018-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1339976, encodeId=87db13399e64f, content=<a href='/topic/show?id=e6624383eaf' target=_blank style='color:#2F92EE;'>#大肠杆菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43837, encryptionId=e6624383eaf, topicName=大肠杆菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0d342500153, createdName=12498bf3m25暂无昵称, createdTime=Sun Mar 11 12:31:00 CST 2018, time=2018-03-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294820, encodeId=5deb29482054, content=看看了解一下.谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=90f31612316, createdName=xiaotaiyang1, createdTime=Sat Mar 10 09:41:50 CST 2018, time=2018-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=294611, encodeId=7bcb2946115b, content=^_^^_^^_^, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Swp2ehfHpiciczeTntUyQOlIGMzQ705ic67sdMTVMbwTv7KbmlUvxrGvRSvQZjPkz7ib5tEDfIaORgczPtmHDpwojg/0, createdBy=c54b2163125, createdName=wqkm, createdTime=Fri Mar 09 21:42:51 CST 2018, time=2018-03-09, status=1, ipAttribution=)]
    2018-03-09 wqkm

    ^_^^_^^_^

    0