Biodesulfuración de dibenzotiofeno(DBT)por cepas bacterianas biodegradadoras de hidrocarburos aisladas de CampoBoscán
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Universidad del Zulia
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Inthisstudythecapacityofdesulfurizationinisolatedbacteriaofpetroleumenviron-mentwasevaluated,wereusedtheDBTinasulfur-freemineralmedium(SFMM).Twobacte-rialstrainswhichwerecultivated15days,thebacterialgrowthwasmeasuredandalsothecon-centrationofsulfateandsulfite.BothstrainsusedtheGlulikesourceofcarbonandenergyandtheDBTlikeonlysourceofcarbon.ThesulfatewasonlydetectedintheSFMMsupplementedwithGluandDBT/DMFoftheAE9.2-7strainandofthemixedculture,theliberationofsul-fateduringtherehearsalstoichiometricalamountdidn tgotothequantityofDBTthatitcandesulfurizetheAE9.2-7strain.SulfatewasnotdetectedinthecultureoftheBA4.4strain.Sul-fitewasnotprobablydetectedinonlyoftheculturesduetothechemistryoxidationfromthesameonetosulfate.ThisstudydemonstratedthatthebiodesulfurizationoftheDBTfortheAE9.2-7strain,wascarriedoutthroughthedirectoxidationofthethiophenicsulfuroftheDBTwayDBT-sulfonewiththeaccumulationofbenzoicacid,2-hydroxibiphenilandthesul-fateliberation
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