Bo-rasaense ba ile ba susumetsoa ke Pac-Man mme ba qapa "lijo tsa polasetiki" tse jang polasetiki, tse ka thusang ho felisa litšila tsa polasetiki.
E na le li-enzyme tse peli-PETase le MHETase e hlahisoang ke baktheria e bitsoang Ideonella sakaiensis e jang libotlolo tsa polasetiki.
Ho fapana le ho senyeha ha tlhaho, ho nka makholo a lilemo, enzyme ena e ntlehali e ka fetola polasetiki hore e be "likarolo" tsa eona tsa pele nakong ea matsatsi a 'maloa.
Li-enzyme tsena tse peli li sebetsa hammoho, joalo ka "Pac-Man tse peli tse hokahantsoeng ke khoele" li hlafuna bolo ea seneke.
Enzyme ena e ncha e ncha e silakanya polasetiki makhetlo a 6 ka potlako ho feta enzyme ea mantlha ea PETase e fumanoeng ho 2018.
Sepheo sa eona ke polyethylene terephthalate (PET), e leng thermoplastic e atileng ka ho fetisisa e sebelisetsoang ho etsa libotlolo tsa lino tse tahang, liaparo le limmete tse atisang ho nka lilemo tse makholo ho bola tikolohong.
Moprofesa John McGeehan oa Univesithi ea Portsmouth o bolelletse lefapha la litaba la PA hore hajoale, re fumana lisebelisoa tsena tsa mantlha mehloling ea lintho tsa khale tse kang oli le khase ea tlhaho. Ka sebele sena ha se bolokehe.
"Empa haeba re ka eketsa li-enzyme ho senya polasetiki, re ka e senya matsatsing a 'maloa."
Ho 2018, Moprofesa McGeehan le sehlopha sa hae ba ile ba thulana le mofuta o fetotsoeng oa enzyme e bitsoang PETase e ka senyang polasetiki ka matsatsi a 'maloa feela.
Phuputsong ea bona e ncha, sehlopha sa lipatlisiso se kopantse PETase le enzyme e 'ngoe e bitsoang MHETase mme ba fumana hore "tšilo ea libotlolo tsa polasetiki e batla e imenne habeli."
Joale, bafuputsi basebelisitse boenjiniere ba liphatsa tsa lefutso ho hokahanya li-enzyme tsena tse peli hammoho ka laboratoring, joalo ka "ho kopanya Pac-Man tse peli le thapo."
"PETase e tla senya bokaholimo ba polasetiki, mme MHETase e tla tsoela pele ho seha, kahoo bona hore na re ka e sebelisa hammoho ho etsisa boemo ba tlhaho, ho bonahala e le ntho ea tlhaho." Moprofesa McGeehan o boletse.
"Teko ea rona ea pele e bonts'itse hore basebetsa hantle hammoho, ka hona re nkile qeto ea ho leka ho li hokahanya."
"Re thabile haholo ho bona hore enzyme ea rona e ncha ea chimeric e potlakile ka makhetlo a mararo ho feta enzyme ea tlhaho e iphetotseng ea tlhaho, e bulelang mekhoa e mecha bakeng sa lintlafatso tse ling."
Moprofesa McGeehan o boetse a sebelisa Diamond Light Source, synchrotron e fumanehang Oxfordshire. E sebelisa X-ray e matla e khanyang ka makhetlo a limilione tse likete tse 10 ho feta letsatsi joaloka microscope, e matla ho lekana ho bona liathomo ka bonngoe.
Sena se ile sa lumella sehlopha sa lipatlisiso ho tsebasebopeho sa mahlakore a mararo sa enzyme ea MHETase le ho ba fa moralo oa limolek'hule ho qala ho rala sistimi ea enzyme e potlakileng.
Ntle le PET, enzyme ena e ntle e ka sebelisoa hape bakeng sa PEF (polyethylene furanate), e nang le tsoekere e nang le tsoekere e sebelisetsoang libotlolo tsa biri, leha e sa khone ho senya mefuta e meng ea polasetiki.
Sehlopha hajoale se ntse se batla litsela tsa ho ntšetsa pele ts'ebetso ea ho bola hore theknoloji e sebelisoe molemong oa khoebo.
Moprofesa McGeehan o itse: "Ha re potlakisa ho etsa li-enzyme, re bola li-plastiki ka potlako, 'me khoebo ea eona e phahama."
Patlisiso ena e phatlalalitsoe ho Proceedings of the National Academy of Sciences.
