Thaum rov ua kom txias cov nqaij, nws cov khoom zoo deteriorates. Hauv kev ua rau kev defrosting, ib feem tseem ceeb ntawm cov khoom tseem ceeb uas ntws tawm ntawm cov nqaij nrog rau kua txiv. Tsis muaj dej khov ua cuam tshuam rau lub cev ntawm cov nqaij. Thaum rov ua kom txias, cov ua kom puas hlwb ua ntau dua, uas cuam tshuam cov saj ntawm cov nqaij cov nqaij.
Ua li cas rau cov nqaij thaum nws rov qab khov
Cov txheej txheem biochemical hauv cov nqaij thaum khov yog cuam tshuam nrog kev ua txhaum ntawm cov qauv protein. Protein muaj cov qauv nthuav dav, thiab muaj dej ncig cov protein nyob hauv cov nqaij. Thaum cov dej khov ua cov ntawv tsim, lawv tsoo cov ntawv molecules, ua rau kev hloov pauv hauv cov qauv ntawm cov protein. Thaum lub sijhawm ua kom txias, cov kua theem ntawm cov dej yog ib nrab tswj mus txog qhov kub txog -68 ° C. Thiab tsuas yog ntawm -70 ° C ua txhua yam dej khov nyob hauv cov leeg nqaij. Nrog rau kev tsim ntawm cov dej khov ua kua hauv cov kua uas seem, cov khoom noj kom yaj tau tsawg hauv nws nce ntxiv. Thaum defrosting, lawv ntws tawm ntawm cov nqaij ua ke nrog kua.
Cov leeg ua ke nrog cov nqaij yog coj los sib nraus los ntawm cov npoo ntse ntawm cov dej khov kom ruaj khov. Ntxiv mus, nrog qeeb khov, khov loj tshwm sim, nrog khov khov ceev ceev, ua qis dua.
Lub tshuab ua kom khov dawb yog nyob ntawm qhov kub ntawm lub taub yees txias thiab qhov loj me ntawm cov nqaij. Qhov no tiv thaiv qhov tsim ntawm dej loj muaju hauv cov nqaij mos ntawm cov nqaij thiab tswj nws cov yam ntxwv zoo. Yog tias cov nqaij, tom qab txias txias, raug xa mus rau chav nrog qhov kub dua, txheej txheem ntawm kev tsim cov dej khov loj yuav pib. Tshwj xeeb tshaj yog tom qab ua tiav yaj.
Raws li qhov tshwm sim, tom qab khov thiab yaj, cov xim ntawm cov nqaij daim tawv hloov pauv, pom cov qauv hloov pauv. Nws ua looser. Thaum lub sijhawm tom qab kho cua sov, qhov hnyav nce ntxiv (xau "kua nqaij").
Hauv cov nqaij yaj, cov leeg mob ua kom rov ua haujlwm ntawm lub xovtooj ntawm kev ua kom lub sijhawm khov. Hauv chav kuaj, pom muaj cov cytochrome oxidase enzyme tuaj yeem siv los txiav txim siab seb cov nqaij tau rov ua rau khov.
Yuav ua li cas kom tsis txhob rov tso cov nqaij khov rau hauv kev coj ua
Kev sib piv ntawm cov nqaij khov thiab kib thiab cov nqaij chilled muab cov lus teb tsis txaus. Cov tais diav ua nrog chilled nqaij yog tastier. Tab sis nws tsis nquag mus yuav cov caj dab lossis cov pob tw ua ntej noj. Nws muaj kev nyab xeeb dua yog khaws cov khoom me me, thaum muaj xwm txheej ceev, npaj cov nqaij hauv tub yees.
Txhawm rau kom tsis txhob ntau lub te nyob rau tib lub sijhawm, nws yog qhov zoo dua los txiav ib daim nqaij uas tau yuav lossis nqaij qaib rau thawj hnub. Teem ib feem los npaj lub hom phiaj npaj rau hnub no, thiab txiav cov seem, npaj hauv feem rau hauv hnab thiab tsuas yog tom qab ntawd khov. Hnub tom qab, koj tuaj yeem tso tawm ntawm cov nqaij tsis khov. Thiab nyob rau hnub tom qab, coj nws tawm thaum yav tsaus ntuj thiab hloov mus rau seem qis ntawm lub tub yees rau qeeb defrosting. Qhov no yuav khaws cia lub siab tshaj plaws saj thiab khoom noj muaj zog ntawm cov nqaij.
