Cov tub yees tuaj yeem muab faib ua cov tub yees kub kub, qhov kub thiab txias tsis tu ncua, txias txias txias, txias txias txias txias, ceev ceev khov tub yees, uas yog, cov tub yees txias. Feem ntau hais lus, nqaij qaib, nqaij nruab deg, cov khoom hauv dej thiab lwm yam yuav tsum tau siv rau hauv cov chaw khaws khoom ceev ceev. Ua tiav cov nyhuv ua ntej txias ua ntej. Quick-krozen warehouse yog hais txog ib txoj hauv kev uas cov zaub mov yuav tsum ncav cuag qhov ntsuas qhov nruab nrab ntawm -18 degree hauv ib lub sijhawm thiab yuav khov sai. Cov zaub mov yuav raug hloov pauv ntau yam thaum lub sijhawm khov, xws li kev hloov pauv ntawm lub cev (ntim ntim, thermal conductivity, tshwj xeeb tshav kub, kev hloov pauv, thiab lwm yam), tshuaj hloov pauv (cov protein hloov pauv, hloov xim, thiab lwm yam), cov ntaub so ntswg hloov pauv ntawm tes, lom thiab microbial hloov, thiab lwm yam. Cov yam ntxwv ntawm cov khoom noj khov ceev ceev yog tswj cov khoom noj khoom haus qub, xim thiab aroma ntawm cov zaub mov kom zoo tshaj plaws. Hauv lwm lo lus, thaum lub sijhawm khov, nws yog ib qho tsim nyog los xyuas kom meej qhov siab tshaj plaws ntawm kev hloov pauv ntawm cov zaub mov saum toj no.
Lub luag haujlwm ntawm lub tsev khaws khoom ceev ceev hauv kev khaws zaub mov:
(1) Tsis txhob tsim cov dej khov loj ntawm cov hlwb.
(2) Txo cov dej tawm hauv lub cev thiab txo cov kua txiv poob thaum lub sij hawm thawing.
(3) Lub sij hawm sib cuag ntawm cov concentrated solutes nyob rau hauv cov ntaub so ntswg ntawm tes thiab cov ntaub so ntswg cov khoom noj, colloids thiab ntau yam khoom yog shortened, thiab kev puas tsuaj ntawm concentration yog tsawg.
(4) Kev txo qis sai sai rau qhov kub thiab txias qhov twg microbial kev loj hlob tshwm sim yog qhov zoo los tiv thaiv kev loj hlob ntawm microbial thiab biochemical tshuaj.
(5) Lub sijhawm luv luv ntawm cov khoom noj khoom haus hauv cov khoom siv khov, qhov zoo dua rau kev txhim kho cov khoom siv thiab kev tsim khoom tas mus li. Cov zaub mov feem ntau pib khov thaum kub poob mus rau -1 degree . Feem ntau ntawm cov dej khov nab kuab yog tsim nyob nruab nrab ntawm -1 degree thiab -5 degree, uas yog hu ua lub siab ice crystal formation theem. Kev khov sai sai tuaj yeem txo lub sijhawm khov ntawm theem no, tshem tawm cov cua sov kom sai li sai tau, thiab txhim kho cov khoom noj khov sai.