Poly (ethylene terephthalate) (PET)wani abu ne da masana'antar abinci da abin sha ke amfani da shi akai-akai; saboda haka, masu bincike da yawa sun yi nazarin daidaiton zafinsa. Wasu daga cikin waɗannan nazarin sun mai da hankali kan samar da acetaldehyde (AA). Kasancewar AA a cikin abubuwan PET abin damuwa ne saboda yana da wurin tafasa a ko ƙasa da zafin ɗaki (21_C). Wannan ƙarancin canjin zafin jiki zai ba shi damar yaɗuwa daga PET zuwa ko dai yanayin yanayi ko kowane samfuri a cikin akwati. Ya kamata a rage yaɗuwar AA zuwa yawancin samfura, tunda an san ɗanɗano/ƙamshin AA da ke cikinsa yana shafar ɗanɗanon wasu abubuwan sha da abinci da aka shirya. Akwai hanyoyi da yawa da aka ruwaito don rage adadin AA da aka samar yayin narkewa da sarrafa PET. Hanya ɗaya ita ce inganta yanayin sarrafawa wanda ake ƙera kwantena na PET. Waɗannan masu canji, waɗanda suka haɗa da zafin narkewa, lokacin zama, da ƙimar yankewa, an nuna cewa suna da tasiri sosai ga samar da AA. Hanya ta biyu ita ce amfani da resin PET waɗanda aka ƙera musamman don rage samar da AA yayin ƙera kwantena. Waɗannan resins an fi sani da ''resin PET na ruwa''. Hanya ta uku ita ce amfani da ƙarin abubuwa da aka sani da acetaldehyde masu tacewa.

An tsara masu tattara AA don yin mu'amala da kowace AA da aka samar yayin sarrafa PET. Waɗannan masu tattara ba sa rage lalacewar PET ko samuwar acetaldehyde. Duk da haka, suna iya; duk da haka, iyakance adadin AA wanda zai iya yaɗuwa daga cikin akwati don haka rage duk wani tasiri akan abubuwan da aka kunsa. Ana tsammanin hulɗar masu tattara tare da AA za ta faru bisa ga hanyoyi uku daban-daban, dangane da tsarin kwayoyin halitta na takamaiman mai tattara. Nau'in farko na hanyar tattarawa shine amsawar sinadarai. A wannan yanayin AA da wakilin tattarawa suna amsawa don samar da haɗin sinadarai, suna ƙirƙirar aƙalla sabon samfuri ɗaya. A nau'in hanyar tattarawa na biyu ana samar da haɗakar haɗawa. Wannan yana faruwa ne lokacin da AA ta shiga cikin ramin wakilin tattarawa kuma aka riƙe ta ta hanyar haɗin hydrogen, wanda ke haifar da haɗakar ƙwayoyin halitta guda biyu daban-daban da aka haɗa ta hanyar haɗin sinadarai na biyu. Nau'in hanyar tattarawa na uku ya haɗa da canza AA zuwa wani nau'in sinadarai ta hanyar hulɗarsa da mai haɓaka. Canza AA zuwa wani sinadari daban, kamar acetic acid, na iya ƙara zafin tafasar ɗan gudun hijirar, ta haka rage ƙarfinsa na canza ɗanɗanon abincin da aka shirya ko abin sha.