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  1. ) r" 1 )t _- ,ta' -. I LrrlIoids aDd Surf.rc('\ lJ: Ilirri rrrer i.rcr-s 3 ) !'.).O I r'1 J1 2 "tg Ccn le n ts l i sts avai l abl e at S ci enceD i rccl Colloids Surfaces Biointerfaces and B: Jr..., . iour nal hom epage l w w w . e l s e v i e r . c o m l l o c a t e / c o l s u r f b Lti*lili{il,rtir;n Lrofcntial llc}r fcriurn, of'a newly isolatecl biosr-rrfactant-pl'{reiuci;"if{ jtlji iii.ir:l'rr.j{"; ti Js I}. st rai n'l'A{] l,,iriirir{ilirl ', ChasemaliMohebalir,Azam Haddadir,, :,h,lvar:r"Jl,, Heidar Shakar.rrnin, rlal r\".i r:r,,Jr Ntrlil' l.ll :i';1.':r.j,i',f.'i it,r't;rclilIttltr. Iir,sa(rchhisfilulc()ll)clrcleuttltldustrV,ltltran,lran 1tt;:t"rt iii lli,,lr)!i, lirrriltyof\iit'rrrr, ;'t' IQlroilJreu(h.lslarnicAz-trel thiven/t-y, Ikraj,Iran i I t'; : " t)t i, I t )t lj01.)'. \'. l at(-itJi\,r)[\( icilal', /eilon [/nivusil V. ftllron. lrotr ABST RACT produ.'ng J".t"ri r.'n'.R ho.i ,,.,,..u.s sl r.ri rr'l fi w ;rsi ',ol rl t'cl rrttrIt,tni .rn Il An in clig cn o us osrl rtactant bi sp. A o il co n la n r in .rted l usi ng an effi ci entenri chment.rnrlsc|eeni ngri rt'tl rotll.)uri ng y,row tho n s uc r{ )s c s0i sorrrcc, rc l ).rct('ri um .r r r d scvcr a lh ydroc.rrbon substr.rtes sol ec.rrbon tl cotrl tll rrodtrcc os urf.r(l .i nl s . bi as tensi on ri l l hc grrxvth rrrei l i urrr As.r r e sr .r lt f bi osrrrfactant rv;rsrcc l rrc c c l orl l t-r' o synthesrs, thc strrface [i8 r lNr t ]lo val uesbel ow 30mN nl l .Thcbi osul hct.rntw ns(.rral )l eotl i rrnri nqsl .rbl ccrl trl s i ons uri i h rangi ngfrol r pent.l neto l i ght nrotor oi l . P rcl i rri n:i ryrl rcnrrrrl rl l .rr.rc tr.ri ;,,rfi on vr r io u s h yd r o c.rrbons 'f cor'l si stcd extr'.rccl l trl ar ds .rnd gl ycol rpi cl s.l rr brr)s i r!l .rc i l nf r cvr :a lcd a t t he I'A tjbi osurf:rctant th of l i pi cxposurcto hi gh sal i rri ty(10114 l ), rv.rtcdtcnrpcr;l tl .rr(,s l ) ( fi rr l : rl l i l rIl .rn.l w.ls st.r b lcclu |i rrg N .rC cl i l ,l willr in a wir ie pl l rangc(4.0 10.0).Thecul tur-cbrothw asel l crti vri urC rr;vrri ngupl oTt).i ltherrs rc l rr.rl ol p.rcl <s hi ch i nrl i c.rtes potcnti .l lval uc0l tl .ro ostrr-f.rct,rnlcni r.rnc ec l l in oi t,r lil o r r o il- sr tur.rtecl s.rncl w the bi r c( o vefy. (l ,2t)0 |l scvi cf l l .V .A l l ri cl rts rc s (1v |ri . l i .rcti vi ty af extreme te mper.rtrrres,pH . arrtl s;ti i rti ty: anri ;rl ti l i fV 1o he In{rc<lr.rction frorn renr.'w .rbl c fcccl stocl <si ! I ,1..)l syrrthesi zecl i, , ' l r t r r r i r i . r i : r i f f . l c e a ctivc .r g e llts o r b io su r t.r ctants are S everal rL-poftson sr-rrcessf appl i c,rti oi rs rri l ri t-r:;ti,rr..l tl s 1ot it i t-rl . rrt i[ ! r i l r l r i i r r r n o l c c r r l c s co n sistin g o f h vd r o p h o b ic a n d h ydrophi l i c oi l spi l l rt:rncdi ati ol r. oi l t.rnk cl c.rtt ttp.rncl nti rt'rbi ,'ri t'tt!r,ttt, ' ri rtj l i : r: r)i r ' ! r i t sr r r r . l r : t r t l o i n tcfd ct with su r fa ce so f va lio u s p o la l i ti es and recovery (MIOR ), t'eve.rl edtl te spcci .tl i trpr;rt.tti ci ' ot tl-rts { ' l )i { ]' ; 1 i l ogi cal p[oducts i n Ll p and cl ow nstt'c.i l l l proccsses i )t ()i i Il l c i ' -t\try lr'{ lr ! tl l i r ( : . i r r ' f a i . r , . r r rin tcr fa cia lte n sio n o f so lu tio n s ll 31.Many l : ii: i : . , , _ i r .i l ' i r ( , 1 : .n ; r 1 1 !r 1 rltio su rf.tcta n ts clttr in g g t' o wtlr on vari ety :, ; 110,111. 'q' oj . r 1 l l . ' : . r i r . . , i.: r i t t l r r , !r io t' fr r :tn ica;r n d stn r ctr r r a l ch .r r a ct el i sti csof l E nhanccd oi l rccovery trethocl s w eri : tl cvi sr-'cl i t !'c t,(tv t' tt;tl l iir} , . r i , i , : r t i i , l l i i ! . , t , c i r r t' ycijvc| sci4 remai ni ng i n rescrvoi rs al te r pri rnal y .rnd se(on(l ;rrv rcco v c ry pl .o- { il.Bio Su r fa Cta n tSC anbeC On- , r: r' i t i r ' ] l r , r : i l , ; : t iirilri,(, i ( i r .L i t!/Og ,r Ou p S.ilr e fir Stg r Ou ltCOnrpri S eS cedures. ME OR i s.rn i mport.rrt tr-r'fi .rr.yer()vL'l v tccl rrrol ogv ti t.tt iilio l l. r, ; : . r t r ! . r i l ' 1 , r : y ; i ! , icw n u r le cr r la r wcig h t, su ch a s g l i rcol i pi ds i, r.rti l i zesrni crobi al cel l s or tl tei r nrctal l ol i l cs i or l csi rl u.rl r;i l rer,ov - , r i ; l i i i | i r ( : i i i 1 1 . ' r . l i r L : ( ct { ) n d q r o u p in clu d cs h ig h nol ecul ar cry [13]. In cl assi cME OII nrethods, tni t.rootg.ttri sn-ts t r'st;i ' r' i t ;ttc i t't sti nrul ated to produce pol yrrters .i nd :i Ll rf nl l ts f h.rt i or l c t i ntt' t. \ ' 1. 'r - r ! l illi r r i \ , r r r . .l t . : ; l .lif / ,l.t.ir r ts iikc lt0 lys.r cch a r icle s, oprotei ns, ncl lip faci al tensi on l t the oi l rorl < i nterl -ace.rnci d ui i rcl ovcty I I 1l . ! r| , r1 . i q ; j i , ' , ; 1 r 1 ' 1 q ; r r i ile .:,1 1 ltlr1 c0 n r 1 6 :xcso f tlle sc m o le cu le s [7,8]. .ti To be sui tabl c.rnd useful i n the ME OR l )r()cussc:i ,rtrr(,o()rl i. i i r ' , i r , ' r r i r r l l V s Vn lh c:iiz!' cl su r ta ct.lr fs, b io su r fa ctants have must be .rbl e to grow uttcl ct' tl tc scvt-tc envi rtttttt.tc ttt;tl il ll. n t r , , i i , r i r t . r i i i - , r t , ro rin s sr - .vtr a l clifli:r ' cn t tie ld s o f industri al gani sr.trs -r i)r', !r , ' r r i . i i r r . i t i r l i i r ; 1: .r g r ir - u llu r - e . r - 0 sn r ctics, p lr a r m .rceuti C al S , condi ti or-rsencountered i n oi l r-eservoi rsi ncl ucl i trg hi gh tc tnpera- t ic it ' i r i i . r r : . ; l.t , r i r l l r r o r us:;in g ,tcxtilc r r r a n u l.tctu r ea n cl p a int i ndus- turc, pressure, sal i ni ty and l ow oxvgen Ievel s I l (),1:i l . Onl v a s nr.rl l nurnber of bacteri .r w erc' i rl cnfi fi ecl w i th the cal tabi l i ty ol 3rc rr.nT-' lrj('.: t l i . ! 1 i ] .i i i ! - c L e i ) t cilr - s, te r o st in b io su r f.r cta n tslr a s i ncreased ilr v rir: ' r ' r i l l , ' i t : ; r ' v i . r a lr r iva r r t.lg r .so vcr th cir - clte r n ica l co u nterparts, i ng ancl produci ng surfaee acti vc i l nrpounrl s untl cr tl tcsc c x tt oi l { ' , i: i i; . r ' :i r i i ) ( i . r ' i . r t l ; r l ; i litVa n cl lo ,u v xicity, h ig h e r fo .r r n in g; speci fi c condi ti ons, ancl fhere w i l l be evcn fcw t'r i l w -r't'ott.i cl i .' r i ri )i -(' to scvercondi ri onssrrch.rsw hatdorrri rr.rtci i rr.rt'ryri ccl rrri i r r1,' rr.;q,i ;5 l oc.rtccli n tl tc hc.rrt of l tot cl t:sctt:;. ppl i c;rti on of ni j ct'ob i ,tl qri t-I.ti -- A t.rnts i nstcad of l i vc nti crootg.rni stl s cotrl d l tc oI gt'c,:t ,ti i \' .l r)t,]l ' r' 1 (rri, ,l).'lr{lin!l.illlircr i l: llir)t('ch[{ilogv Rrsr'.]rfh Ccnlcr, Rcscar(h lnstitLite ol and val uc i n harsh grow th-l i rrri trrrl l coucl i i i ons prcv.ri l i ny , ul ' .i c r' i l r'.ir;li irr:riD(i,r!rrV Wr\tlilvd./\zidrSportConfilcx,P.().l]ox14665-1998,'lehran, ,,,:i) j,'1 .:;r.l .ll :Sl:)l1ir.l: ldx: *!1821411391 reservoi r-s l 4l . 16. l rIt.ir (N4. Shivindi). i irr.lrl ii.l(i,t sjjt ilr.i,,;rr:rirrrruirt 1l'1,:r l',r1,:ri$ ',c1 f,,)trt 1|.ttt{'r.al:l(}l{}Fl\rv)rl lr.V.Alllightsreserved. : |, r'.r' ;1., ,

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