Poly (ethylene terephthalate) (PET)ndi zinthu zonyamula katundu zomwe zimagwiritsidwa ntchito ndi makampani azakudya ndi zakumwa;choncho, kukhazikika kwake kwa kutentha kwaphunziridwa ndi ofufuza ambiri.Ena mwa maphunzirowa atsindika kwambiri za m'badwo wa acetaldehyde (AA).Kukhalapo kwa AA mkati mwa zolemba za PET ndikodetsa nkhawa chifukwa kuli ndi malo otentha kapena kutsika kutentha (21_C).Kutsika kwa kutentha kumeneku kumalola kuti ifalikire kuchokera ku PET kupita kumlengalenga kapena chilichonse chomwe chili mkati mwa chidebecho.Kufalikira kwa AA muzinthu zambiri kuyenera kuchepetsedwa, popeza kukoma/fungo la AA limadziwika kuti limakhudza kukoma kwa zakumwa ndi zakudya zina.Pali njira zingapo zomwe zafotokozedwera zochepetsera kuchuluka kwa AA komwe kumapangidwa panthawi yosungunuka ndi kukonza PET.Njira imodzi ndikuwongolera momwe makonzedwe amapangidwira momwe zotengera za PET zimapangidwira.Zosinthazi, zomwe zimaphatikizapo kutentha kosungunuka, nthawi yokhalamo, ndi kumeta ubweya wa ubweya, zawonetsedwa kuti zimakhudza kwambiri m'badwo wa AA.Njira yachiwiri ndikugwiritsa ntchito ma resin a PET omwe adapangidwa mwapadera kuti achepetse kutulutsa kwa AA panthawi yopanga ziwiya.Ma resins awa amadziwika kwambiri kuti ''water grade PET resins''.Njira yachitatu ndiyo kugwiritsa ntchito zowonjezera zomwe zimadziwika kuti acetaldehyde scavenging agents.

AA scavengers adapangidwa kuti azilumikizana ndi AA iliyonse yomwe imapangidwa pakukonza PET.Zowononga izi sizichepetsa kuwonongeka kwa PET kapena mapangidwe a acetaldehyde.Iwo akhoza;komabe, chepetsani kuchuluka kwa AA komwe kumatha kufalikira mu chidebe ndikuchepetsa zotsatira zilizonse zomwe zapakidwa.Kuyanjana kwa ma scavenging agents ndi AA kumaganiziridwa kuti kuchitike motsatira njira zitatu zosiyana, kutengera kapangidwe ka molekyulu ya mkangaziwisi.Mtundu woyamba wa scavenging limagwirira ndi chemical reaction.Pamenepa AA ndi scavenging agent amatani kuti apange mgwirizano wa mankhwala, kupanga chinthu chimodzi chatsopano.Mu mtundu wachiwiri wa scavenging mechanism, inclusion complex imapangidwa.Izi zimachitika pamene AA imalowa m'kati mwazitsulo zowonongeka ndipo imagwiridwa ndi ma hydrogen bonding, zomwe zimapangitsa kuti ma molekyulu awiri osiyana agwirizane ndi njira zachiwiri za mankhwala.Mtundu wachitatu wamakina osakaza umaphatikizapo kutembenuka kwa AA kukhala mtundu wina wamankhwala kudzera mukuchita kwake ndi chothandizira.Kusandulika kwa AA kukhala mankhwala ena, monga acetic acid, kungawonjezere kuwira kwa munthu wosamukira kudziko lina ndipo motero kumachepetsa mphamvu yake yosintha kakomedwe ka chakudya kapena chakumwacho.