Kunshin filastik yana da ƙarancin iskar oxygen da kuma rashin ƙarfi don tsara oxygen da danshi abun ciki kusa da abinci mai adana. Saboda musayar oxygen tsakanin ciki da waje, zai iya hana haɓakar ƙwayoyin cuta anaerobic kuma yana toshe ƙura a cikin iska, ta hanyar haɓaka lokacin abinci. Don haka adana ya hada da "riƙewar ruwa", "Shelf rayuwa", da "kariya na gina jiki". Gabaɗaya magana, abinci wanda ya kamata a nannade cikin kunshin filastik da kyau za'a iya kiyaye shi a zazzabi a ɗakin da ake yi na mako ɗaya.
