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首页> 外文会议>WEFTEC 2011;Annual Water Environment Federation technical exhibition and conference >Feasibility study on Biocontrol of Membrane Biofouling using Lytic Bacteriophages
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Feasibility study on Biocontrol of Membrane Biofouling using Lytic Bacteriophages

机译：溶菌性噬菌体对生物膜污染进行生物防治的可行性研究

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摘要

Viruses that infect and lyse bacteria are ubiquitous, abundant and biologically important in theenvironment. Although viruses are abundant in the wastewater treatment systems, little is knownabout their biological control of membrane biofouling using bacteriophage infecting biofilmforming bacteria such as P. aeruginosa. A lytic phage to infect P. aeruginosa was isolated froma full scale wastewater treatment plant. The idea was to control biofilm formation by P.aeruginosa using lytic phages.The isolated lytic phage infecting P. aeruginosa morphologicallybelongs to the Myoviridae family with an isometric head and a contractile tail. Titer of theisolated phage with P. aeruginosa was calculated to be 5.32 ± 1.1× 10~6 PFU/ mL and burst sizewas found to be 113 ± 17 PFU/infected cell. Scanning electron micrographs confirmed thatspecific phage could extensively degrade biofilm produced from P. aeruginosa. This phage didnot affect any other liquid cultures relevant in activated sludge treatment, suggesting nocollateral damage to other bacteria. Bacteriophage-based biocontrol promises a great potential tomitigate biofilm formation in membrane systems.
机译：感染和裂解细菌的病毒在环境中无处不在，丰富且具有生物学重要性。尽管病毒在废水处理系统中含量很高，但是人们对于利用细菌噬菌体感染铜绿假单胞菌等生物膜形成细菌的膜生物污染的生物控制知之甚少。从完整的废水处理厂分离出感染铜绿假单胞菌的裂解噬菌体。这个想法是用溶菌性噬菌体控制绿脓杆菌的生物膜形成。分离的溶菌性噬菌体感染铜绿假单胞菌属于等长的头和收缩尾巴的肌病毒科。经计算，铜绿假单胞菌分离的噬菌体的滴度为5.32±1.1×10〜6 PFU / mL，爆发大小为113±17PFU /感染细胞。扫描电子显微镜照片证实，特定的噬菌体可广泛降解铜绿假单胞菌产生的生物膜。该噬菌体未影响与活性污泥处理相关的任何其他液体培养物，提示对其他细菌没有附带损害。基于噬菌体的生物控制有望缓解膜系统中生物膜的形成。

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