Kungani imiphumela yokubulala inzalo ihluka ngisho noma izinga lokushisa elifanayo lika-121°C? — Embonini yokucubungula ukudla, izinkampani eziningi zinombono ongalungile ovamile mayelana nokubulala inzalo okushisa okuphezulu:
“Uma umkhiqizo uhlanzwa ngokubulala amagciwane ku-121°C, kumele uphephe.” Kodwa-ke, ekukhiqizweni kwangempela, lesi simo esilandelayo sivame ukuvela: ngisho noma uhlanzwa ngokubulala amagciwane ekushiseni okufanayo okungu-121°C, eminye imikhiqizo inokuphila okungaphezu kwezinyanga ezingu-12 eshalofini, kanti eminye ithuthukisa izinkinga ezifana nokuvuvukala kwesikhwama, ukushaqeka noma ngisho nokungcola kwamagciwane phakathi namasonto ambalwa.
Kungani lokhu kwenzeka? Impendulo ayikho nje ekushiseni, kodwa futhi ikwipharamitha ebalulekile ekubulaweni kokudla: inani le-F₀.
Kungani imiphumela yokubulala amagciwane ihluka ngisho noma izinga lokushisa lilingana no-121°C?
Izinga lokushisa liyisici esisodwa nje phakathi kwezimo zokubulala amagciwane. Kuma-microorganisms, okunquma ngempela izinga lokubhujiswa kwawo yilokhu:
umphumela ohlangene wokushisa nesikhathi.
| Umkhiqizo A | 121°C imizuzu eyi-10 |
| Umkhiqizo B | 121°C imizuzu engama-30 |
Nakuba yomibili imikhiqizo ifinyelela izinga lokushisa eliphezulu elifanayo, umphumela wokubulala amagciwane ophumelayo uhlukile ngokuphelele.
Isizathu ukuthi uMkhiqizo B ufinyelela ubungozi obukhulu bokushisa, okwazi ukubulala amagciwane amaningi amelana nokushisa. Ngakho-ke, embonini yokudla, ukusebenza kahle kokubulala amagciwane akunakuhlolwa ngokushisa kuphela, kodwa kunalokho ngenani le-F₀.
Iyini inani le-F₀?
Inani le-F₀ (Inani Lokuhlanza) liyisibonakaliso esaziwa emhlabeni wonke sobukhulu bokuhlanza okushisa.
Kuchazwa njengesikhathi (ngemizuzu) esidingekayo ukuze kufezwe umphumela ofanayo wokubulala amagciwane kuma-microorganisms ku-121.1°C.
Uma inani le-F₀ liphakeme, kulapho ukuqina kokubulala amagciwane kuba kukhulu khona.
| F_0=3 | kukhombisa umphumela olingana nokuhlanza okuqhubekayo ku-121.1°C imizuzu emi-3. |
| F_0=8 | kubonisa umphumela olingana nokuhlanza okuqhubekayo ku-121.1°C imizuzu engu-8. |
Isikhathi sokuthunyelwe: Juni-08-2026