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Saienitisi fausiaina se fou polymerase e faʻaleagaina otaota palasitika i ni nai aso

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Note: E aofia ai lua enzymes-PETase ma MHETase-gaosia e siama taʻua o le Ideonella sakaiensis e fafagaina fagu palasitika.

O saienitisi na faʻaosofia e Pac-Man ma fausiaina se palasitika e ai i le "cocktail", e ono fesoasoani e aveʻese ai otaota palasitika.

E aofia ai lua enzymes-PETase ma MHETase-gaosia e siama taʻua o le Ideonella sakaiensis e fafagaina fagu palasitika.

E le pei o le faʻaleagaina masani, lea e faitau selau tausaga le umi, o lenei supa enzyme mafai ona liua palasitika i ona uluaʻi "vaega" i totonu o ni nai aso.

O nei enzim e lua e galulue faʻatasi, pei o le "lua Pac-Man fesoʻotaʻi e se manoa" o loʻo lamuina se polo māmā.

Lenei super maoaʻe enzyme faʻamaeʻaina palasitika 6 taimi vave nai lo le uluaʻi PETase enzyme maua i le 2018.

O lona faʻamoemoe o le polyethylene terephthalate (PET), o le thermoplastic e masani ona faʻaaoga e fai ai fagu inu, lavalava, ma kapeta, lea e masani ona faitau selau tausaga e pala ai le siosiomaga.

O le polofesa o John McGeehan o le Iunivesite o Portsmouth, na ia taʻu atu i le ofisa faasalalau talafou a le PA, o le taimi nei, tatou te mauaina nei mea taua mai punaoa o meaola e pei o le suauʻu ma le kesi. Lenei e moni unsustainable.

"Ae afai e mafai ona tatou faʻaopopo ni enzyme e faʻamaʻimau ai le palasitika, e mafai ona tatou gagauina i lalo i ni nai aso."

I le 2018, Polofesa McGeehan ma lana 'au na tautevateva i luga o se suiga fesuiaiga o le enzyme e igoa PETase e mafai ona talepe palasitika i ni nai aso.

I le latou suʻesuʻega fou, na faʻafefiloi ai e le vaega suʻesuʻe le PETase ma le isi enzyme ua faʻaigoaina o le MHETase, ma maua ai, "ua toeititi lava a faʻaluaina le faʻalaʻitiitiina o fagu palasitika."

Ma, na faʻaaoga e le au suʻesuʻe le faʻatekinolosi o le genes e fesoʻotaʻi ai nei enzim e lua faʻatasi i le fale suʻesuʻe, pei lava o le "fesoʻotaʻi lua Pac-Man ma se maea."

"O le PETase o le a soloia luga o le palasitika, ma o le MHETase o le a toe tipiina, o lea vaʻai pe mafai ona tatou faʻaaogaina faʻatasi e faʻataʻitaʻi le tulaga i le natura, e foliga mai e masani ai." Fai mai Polofesa McGeehan.

"O le matou faʻataʻitaʻiga muamua na faʻaalia ai e sili atu le latou galulue faʻatasi, o lea na matou filifili ai e taumafai e faʻafesoʻotaʻi i latou."

"Matou te fiafia tele e vaʻai atu o le matou chimeric enzyme fou e faʻatolu taimi televave nai lo le natura fesuiaʻi vavaeʻeseʻese fualaʻau, lea tatalaina auala fou mo nisi faʻaleleia atili."

Na faʻaaoga foi e le polofesa McGeehan le Diamond Light Source, o se synchrotron o loʻo tu i Oxfordshire. E faʻaaogaina le malosi X-ray 10 piliona taimi pupula nai lo le la e pei o se microscope, e lava lona malosi e vaʻai ai atoma taʻitasi.

O lenei mea na faʻatagaina ai le vaega suʻesuʻe e fuafua le tolu-itu tulaga o le MHETase enzyme ma tuʻuina atu ia i latou se mamanu molemole e amata amataina le vaveina o le tino.

I se faʻaopopoga i le PET, o lenei super enzyme e mafai foʻi ona faʻaaogaina mo le PEF (polyethylene furanate), o le bioplastic e faʻavae i le suka e faʻaaoga mo fagu pia, e ui lava e le mafai ona gagauina isi ituaiga palasitika.

O loʻo tau sailia nei e le 'au ni auala e faʻateleina ai le saoasaoa ole faʻataʻatiaga ina ia mafai ai ona faʻaaogaina le tekonolosi mo pisinisi.

"O le televave o le tatou faia o enzymes, o le vave foi tatou decompose palasitika, ma le maualuga lona tulaga faʻamalosia ola," fai mai Polofesa McGeehan.

Lenei suʻesuʻega na lolomiina i le Taualumaga o le National Academy o Saienisi.

 
 
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