Quorum quenching activity of indigenous quorum quenching bacteria and its potential application in mitigation of membrane biofouling

Gu Yanling; Huang Jinhui; Zeng Guangming; Shi Yahui; Hu Yi; Tang Bi; Zhou Jianxin; Xu Weihua; Shi Lixiu

摘要

Abstract <section xml:id="jctb5507-sec-0001" numbered="no"> <title type="main">BACKGROUND >Quorum sensing (QS) could regulate gene expression so as to mediate some bacterial behaviors such as the production of extracellular polymeric substances (EPS) and biofilm formation. In this study, a quorum quenching (QQ) bacterium was isolated from an indigenous lab‐scale membrane bioreactor (MBR) and encapsulated in a dumpling‐shaped microbial bag for biofouling control. </section> <section xml:id="jctb5507-sec-0002" numbered="no"> <title type="main">RESULTS > This QQ bacteria has a higher genetic homology with <fi>Acinetobacter bereziniae</fi> strain. The effect of time and temperature on the QQ activity of the microbial bag was tested by degrading N‐acyl homoserine lactone (AHL). The results showed the degradation of C8‐HSL (N‐Octanoyl‐DL‐homoserine lactone) and C6‐HSL (N‐Hexanoyl‐L‐homoserine lactone) could reach equilibrium within 2 h. In addition, a suitable temperature for AHL degradation was 20 °C, at which the rate of degradation of C6‐HSL and C8‐HSL by the microbial bag was 88% and 69%, respectively. The antifouling efficiency of the microbial bag was investigated by a constant pressure filtration system. With the microbial bag added, the decrease of permeability was obviously improved. After 14 days, the permeability with QQ decreased to 18% while the control experiment exhibited almost no permeability. </section> <section xml:id="jctb5507-sec-0003" numbered="no"> <title type="main">CONCLUSION >The excellent AHL degradation rate and the filtration test showed that this QQ bacteria has an excellent antifouling potential in membrane filtration systems. ? 2017 Society of C </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract XMLNS =“http://www.wiley.com/namespaces/wiley”type =“main”xml：lang =“en”> <title type =“main”>抽象</ title> <section XML：ID =“JCTB5507-SEC-0001”编号=“否”> <标题类型=“main”>背景</标题> >仲裁感测（qs）可以调节基因表达，以便介导一些细菌行为，例如生产细胞外聚合物物质（EPS）和生物膜形成。在该研究中，从土着实验室凝聚膜生物反应器（MBR）中分离了仲裁猝灭（QQ）细菌，并在饺子形微生物袋中包封，用于生物污染控制。</ p> </ section> <section XML：ID =“JCTB5507-SEC-0002”编号=“否”> <标题类型=“main”>结果</标题> >该QQ细菌具有更高的遗传同源性与<fi>胆杆菌Berziniae </ fi>菌株。通过降解N-酰基HomeSerine内酯（AHL）测试时间和温度对微生物袋的QQ活性的影响。结果表明，C8-HSL（正辛酰基-DL-杂环晶内酯内酯）和C6-HSL（N-六烷酰基-L-HOMOSERINE内酯内酯）的降解可以达到2小时内的平衡。另外，用于AHL劣化的合适温度为20℃，分别分别为88％和69％的C6-Hs1和C8-Hsl的降解速率。通过恒压过滤系统研究了微生物袋的防污效率。随着微生物袋加入，渗透性降低明显改善。 14天后，QQ的渗透率降至18％，而对照实验几乎没有渗透性。 </ p> </部分> <部分XML：ID =“JCTB5507-SEC-0003”编号=“否”> <标题类型=“main”>结论</ title> >出色的AHL劣化率和劣化率过滤试验显示该QQ细菌在膜过滤系统中具有优异的防污电位。还2017年度社会 </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-33908/'>《Journal of Chemical Technology & Biotechnology》</a> <b style="margin: 0 2px;">|</b><span>2018年第5期</span><b style="margin: 0 2px;">|</b><span>共7页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Gu Yanling&option=202" target="_blank" rel="nofollow">Gu Yanling;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Huang Jinhui&option=202" target="_blank" rel="nofollow">Huang Jinhui;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zeng Guangming&option=202" target="_blank" rel="nofollow">Zeng Guangming;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Shi Yahui&option=202" target="_blank" rel="nofollow">Shi Yahui;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Hu Yi&option=202" target="_blank" rel="nofollow">Hu Yi;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Tang Bi&option=202" target="_blank" rel="nofollow">Tang Bi;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhou Jianxin&option=202" target="_blank" rel="nofollow">Zhou Jianxin;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Xu Weihua&option=202" target="_blank" rel="nofollow">Xu Weihua;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Shi Lixiu&option=202" target="_blank" rel="nofollow">Shi Lixiu;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> <p>College of Environmental Science and EngineeringHunan UniversityChangsha Hunan China;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/180.html" title="生物工程学（生物技术）">生物工程学（生物技术）;</a><a href="https://www.zhangqiaokeyan.com/clc/20827.html" title="生物化学过程">生物化学过程;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=quorum quenching&option=203" rel="nofollow">quorum quenching;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=antifouling&option=203" rel="nofollow">antifouling;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=quorum sensing&option=203" rel="nofollow">quorum sensing;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=MBR&option=203" rel="nofollow">MBR;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=biofilm&option=203" rel="nofollow">biofilm;</a> </p> <div class="translation"> 机译：法定猝灭;防污;Quorum感应;MBR;生物膜; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div 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