Chakudya cha m'zitini chingasungidwe kwa nthawi yayitali popanda zotetezera

"Chitini ichi chapangidwa kwa nthawi yoposa chaka chimodzi, nchifukwa chiyani chikadali mkati mwa nthawi yosungiramo zinthu? Kodi chikadali chodyedwa? Kodi pali zinthu zambiri zosungiramo zinthu? Kodi ichi ndi chotetezeka?" Ogula ambiri adzada nkhawa ndi kusungidwa kwa nthawi yayitali. Mafunso ofanana ndi omwe amabuka kuchokera ku chakudya cha m'zitini, koma kwenikweni chakudya cha m'zitini chingasungidwe kwa nthawi yayitali kudzera mu kusabereka kwa malonda.

Chakudya cha m'zitini chimatanthauza zinthu zopangira chakudya zomwe zakonzedwa kale, kusungidwa m'zitini ndi kutsekedwa m'zitini zachitsulo, mabotolo agalasi, mapulasitiki ndi ziwiya zina, kenako n'kutsukidwa kuti zigwiritsidwe ntchito m'masitolo ndipo zitha kusungidwa kutentha kwa chipinda kwa nthawi yayitali. Kutsukidwa kwa chakudya cha m'zitini kumagawidwa m'njira ziwiri: chakudya cha asidi wochepa chomwe chili ndi pH yoposa 4.6 chiyenera kutsukidwa ndi kutentha kwakukulu (pafupifupi 118°C-121°C), ndipo chakudya cha asidi chomwe chili ndi pH yochepera 4.6, monga zipatso za m'zitini, chiyenera kutsukidwa (95°C-100°C).

Anthu ena angafunsenso ngati zakudya zomwe zili mu chakudyacho zimawonongekanso chakudya cha m'zitini chikayeretsedwa ndi kutentha kwambiri? Kodi chakudya cha m'zitini sichilinso ndi thanzi? Izi zimayamba ndi kusabereka kwa malonda.

Malinga ndi "Canned Food Industry Handbook" yofalitsidwa ndi China Light Industry Press, kusabala kwa malonda kumatanthauza kuti zakudya zosiyanasiyana pambuyo poziika m'zitini ndi kuzitseka zimakhala ndi pH yosiyana komanso mabakiteriya osiyanasiyana omwe amanyamula okha. Pambuyo poyesa sayansi ndi kuwerengera mosamala, pambuyo poziika pang'ono ndi kuziziritsa kutentha ndi nthawi zosiyanasiyana, vacuum inayake imapangidwa, ndipo mabakiteriya oyambitsa matenda ndi mabakiteriya owononga omwe ali mu chitini amaphedwa kudzera mu njira yoziika, ndipo michere ndi kukoma kwa chakudyacho zimasungidwa kwambiri. Zimakhala ndi phindu la malonda panthawi yomwe chakudyacho chili pashelefu. Chifukwa chake, njira yoziika m'zitini simapha mabakiteriya onse, koma imangoyang'ana mabakiteriya oyambitsa matenda ndi mabakiteriya owononga, kusunga michere, ndipo njira yoziika m'zitini ya zakudya zambiri ndi njira yophikira, zomwe zimapangitsa mtundu wawo, fungo lawo ndi kukoma kwawo kukhala bwino. Zokhuthala, zopatsa thanzi komanso zokoma kwambiri.

Chifukwa chake, kusungidwa kwa nthawi yayitali kwa chakudya cham'zitini kumatha kuchitika pambuyo pokonza chakudyacho pasadakhale, kuchiika m'zitini, kuchitseka ndi kuchiyeretsa, kotero chakudya cham'zitini sichifunika kuwonjezera zinthu zosungira ndipo chikhoza kudyedwa mosamala.