Cov khoom noj nthuav dav uas tsim los ntawm cov khoom noj extruder muaj kev siv siab. Thaum nthuav cov ntaub ntawv, kev kho kub kub ua rau cov hmoov txhuv nplej siab gelatinize, rog kom ruaj khov, thiab cov qauv fiber ntau thiab cov phab ntsa ntawm tes yuav raug rhuav tshem thiab muag muag. Cov qib siab ntawm kev loj hlob tuaj yeem pab txhim kho kev siv ntau yam khoom noj khoom haus, thiab tuaj yeem rhuav tshem cov khoom tsis zoo xws li antitrypsin thiab cov khoom noj khoom haus los tiv thaiv cov khoom siv thaum lub sij hawm puffing.
Extruded pub muaj txiaj ntsig zoo rau kev txhim kho lub palatability thiab digestibility ntawm cov ntaub ntawv raw, thiab muaj kev siv ntau dua li cov hmoov thiab pellet pub. Cov dej nthuav dav pub yuav tsum tau qhuav, yog li cov dej noo thiab cov khoom tawv tawv yog tsawg, thiab cov particle hmoov txo qis. Thaum lub sij hawm puffing txheej txheem, feem ntau cov kab mob thiab cov fungi raug tua, ua rau lub neej ntev thiab yooj yim cia thiab kev thauj mus los. Lub zog ntxiv ntawm extruded pub pab txhawb kev loj hlob ntawm cov tsiaj hauv dej.
