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1、BioresourceTechnologyxxx(2012)xxx–xxxContentslistsavailableatSciVerseScienceDirectBioresourceTechnologyjournalhomepage:www.elsevier.com/locate/biortechAntibioticresistanceofEscherichiacoliinleachatesfrommunicipalsolidwastelandfills:Comparisonbetweensemi-aerobicandanaerobicoperationsaa
2、,⇑bacSimanataThreedeach,WilaiChiemchaisri,ToruWatanabe,ChartChiemchaisri,RyoHonda,cKazuoYamamotoaDepartmentofEnvironmentalEngineering/CenterofAdvancedStudiesinIndustrialTechnology,FacultyofEngineering,KasetsartUniversity,Chatuchak,Bangkok,ThailandbDepartmentofFood,LifeandEnvironmenta
3、lScience,FacultyofAgricultureYamagataUniversity,JapancEnvironmentalScienceCenter,TheUniversityofTokyo,Tokyo,JapanarticleinfoabstractArticlehistory:Abacterialsusceptibilitytestto31antibioticswasconductedonthe80isolatedEscherichiacolifromtheAvailableonlinexxxxleachatesofthelandfillsintw
4、odifferentoperations:semi-aerobic(SL)andanaerobic(AL)landfills.The43averagepopulationofE.colifromSLandALleachateswere2.210and9.410CFU/100ml,respec-Keywords:tively.Between80.8%and87.5%oftheE.coliisolatedfrombothleachatesasresistanttothetestedanti-Antibioticresistancebioticsandhighres
5、istanceswerefoundtodoxycycline(53.8–68.8%),cephalothin(57.5–61.3%),Escherichiacolitetracycline(51.3–67.5%)andminocycline(37.5–46.3%).ThepercentagesofisolatesresistanttomostSemi-aerobiclandfillantibioticswerehigherintheALleachate.TheexceptionwasnitrofurantointowhichtheisolatesfromLeach
6、atetheSLwerehighlyresistant.E.colifrombothsourcesshowedsimilarlyhighsusceptibilities(90–100%)Solidwastetoaminoglycosides,quinolones,chloramphenicol,sulfonamideandsomenewbeta-lactams.Thediffer-enceinavailableoxygeninlandfillscouldaffectE.colisusceptibilitytoantibioticsinleachates.Ó2012
7、ElsevierLtd.Allrightsreserved.1.IntroductionIndevelopingcountries,municipalsolidwaste(MSW)iscom-monlycontaminatedwithexpiredmedicines,usedbabydiapersAntibioticsarewidelyusedistoprotecthumans’andanimals’andtoiletpapersfromhospitals/healthcareunits.Whenthesehealthfrompathogenicbacteria
8、byreducingin
