Bokosi lolongedza chakudya, monga momwe dzinalo likusonyezera, limagwiritsidwa ntchito polongedza mabokosi a chakudya, likhoza kugawidwa m'magulu malinga ndi zipangizo monga: bokosi lamatabwa, bokosi la mapepala, bokosi la nsalu, bokosi lachikopa, bokosi lachitsulo, bokosi lolongedza lokhala ndi makoko, ndi zina zotero, likhozanso kugawidwa m'magulu malinga ndi dzina la chinthu monga: bokosi lamphatso, bokosi la vinyo, bokosi la chokoleti, bokosi la cholembera, bokosi lolongedza chakudya, bokosi lolongedza tiyi, ndi zina zotero. Tsopano lasanduka mabokosi opangidwa ndi matabwa, mapepala ndi zinthu zina zosakanikirana. Ntchito ya bokosi lolongedza chakudya: kuonetsetsa kuti chakudya chili bwino ponyamula, kukonza mtundu wa zinthu, ndi zina zotero. Cholinga cha bokosi lolongedza chakudya makamaka ndikuteteza chakudya ku mphamvu ya mankhwala ndi tizilombo toyambitsa matenda, kuonetsetsa kuti kapangidwe ka zakudya ndi mtundu wa chakudya sichikusintha, kuti ateteze thanzi la ogula. Kuphatikiza apo, chakudya cholongedza chimakhala ndi zinthu zambiri zosavuta zonyamulira, kusungira, kugulitsa ndi kugwiritsa ntchito, pamene chikulimbikitsa malonda. Kulongedza chakudya moyenera kumatha kutalikitsa nthawi yosungira ndi kusunga nthawi yake, ndikuchepetsa kwambiri chizolowezi cha kuwonongeka kwa chakudya. Zinthu zomwe zimakhudza ubwino wa chakudya ndi izi: - kuwala; Chachiwiri ndi kutentha; Chachitatu ndi mpweya; Chachinayi ndi chinyezi; Chachisanu, tizilombo toyambitsa matenda. Kuchokera pakupanga chakudya, kugulitsa ndi kugwiritsa ntchito kwa mfundo zitatu, cholinga cha bokosi lolongedza chakudya: - ndikuletsa kuwonongeka, kuonetsetsa kuti zinthu zili bwino; Chachiwiri ndikuletsa kuipitsidwa kwa tizilombo toyambitsa matenda ndi fumbi; Chachitatu, kulinganiza ndikufulumizitsa kupanga chakudya; Chachinayi, ndikoyenera kunyamula ndi kufalitsa chakudya; Chachisanu, kuwonjezera mtengo wa chakudya. Bokosi lolongedza chakudya malinga ndi kapangidwe kake ka zinthu zopangira, logawidwa mu polyethylene, polypropylene, polystyrene, polyvinyl chloride ndi mitundu ina, polyethylene, polypropylene ndi pulasitiki yotetezeka, ingagwiritsidwe ntchito kusunga chakudya. Mabokosi apulasitiki otayidwa omwe dzina lake lonse ndi bokosi lodzaza ndi thovu la polystyrene, chinthu chachikulu ndi polystyrene ndi chothandizira thovu, polystyrene ndi ma polima a styrene, kufika madigiri 65 Celsius, padzakhala mkhalidwe waulere wa styrene ndi kusamuka kwa zinthu zovulaza zotchedwa dioxins, kuvulaza thupi la munthu. Kuphatikiza apo, chothandizira chopukutira ndi mtundu wa zinthu zamankhwala zovulaza thupi la munthu. Mabokosi ena otengera chakudya omwe amaphwanya malamulo a dziko lonse ogwiritsira ntchito amanunkhira fungo loipa akadzazidwa ndi chakudya chotentha, chomwe ndi poizoni wotulutsidwa ndi mabokosi apulasitiki odzaza ndi thovu. Zinthu zimenezi zimawononga dongosolo la mitsempha ya anthu ndikuwopseza kwambiri thanzi la anthu.
