Quick Frozen Zaub Taw Qhia

Thaum cov zaub khov khov, qhov nruab nrab kub yuav tsum poob ntawm -1 degree mus rau -5 degree, thiab tom qab ntawd mus rau hauv qab -15 degree hauv 30 feeb. Tsuas yog cov zaub khov uas tuaj yeem ncav cuag lossis tshaj qhov ceev no tuaj yeem hu ua cov zaub khov sai.
Taw qhia
Cov txheej txheem ntau lawm
Siv cov zaub zoo rau blanching. Thaum cov zaub tig ntsuab tsaus, lawv tuaj yeem khaws thiab muab tso rau hauv dej txias kom txias. Tom qab txias, cov zaub yog muab tso rau hauv ib lub centrifuge kom qhuav, thiab ces khov. Ceev nrooj khov rau li 45 feeb nyob rau hauv ib puag ncig cua txias ntawm -33 degree rau -40 degree *Lub sij hawm tsim cov zaub txawv *, thiab ces nkag mus rau hauv dej txias los ua nyias cov dej khov rau ntawm qhov chaw kom tiv thaiv oxidation. .
Lub hom phiaj ntawm blanching yog tua fungi thiab ua tiav lub hom phiaj ntawm kev khaws cia. Dej siab tshaj 40 degree kuj tuaj yeem ua rau cov enzymes lom hauv cov zaub, yog li ua rau cov tshuaj lom neeg lom neeg thiab lub cev muaj zog. Qhov luv luv lub sij hawm khov, qhov zoo ntawm cov zaub khov sai sai.
Lub sijhawm cia:
Nws raug nquahu kom khaws cia li ntawm ib nrab xyoo mus rau ib xyoos (qhib khaws cia ntawm -20± 2 degree raws li qhov xav tau)
Qhov zoo ntawm cov zaub ceev ceev
Ntau tus neeg muaj kev nkag siab tsis zoo txog cov zaub uas khov sai, xav tias cov zaub sai sai poob ntau cov as-ham. Qhov tseeb, cov zaub ceev ceev yog cov zaub mov zoo li cov zaub tshiab, thiab txawm tias muaj txiaj ntsig zoo dua. Qhov no yog vim tias cov khoom siv raw ntawm cov zaub ceev ceev muaj cov kev xav tau siab heev. Lawv yuav tsum yog cov zoo, tsim kom loj hlob, uniform loj thiab ntev, tsis muaj kab mob thiab kab mob, thiab tsis muaj kuab paug. Tsis tas li ntawd, lawv yuav tsum tsis txhob muab tso rau hauv dej, khi, sib tshooj thiab nias tom qab sau, thiab thauj mus rau lub sijhawm. Los ntawm kev sau qoob rau kom khov sai, nws yuav tsum tau tswj tsis pub dhau 4 mus rau 10 teev nyob ntawm ntau yam, yog li ua kom cov khoom tshiab ntawm cov khoom siv raw. Tom qab ceev ceev khov, cov zaub yeej ib txwm tswj nyob rau hauv qhov kub thiab txias ib puag ncig qis dua -18 degree , thiab ntau yam tshuaj lom neeg cov tshuaj lom neeg hauv lawv kuj inhibited. Cov zaub mov hauv cov zaub yuav tsis ploj thaum lub sijhawm khov thiab kev thauj mus los.
Qhov sib txawv ntawm cov zaub ceev-kub thiab cov zaub qeeb-qos
Thaum cov zaub khov sai, vim lub sij hawm luv luv ntawm cov zaub, cov dej tuaj yeem dhau los ntawm qhov siab tshaj plaws crystallization cheeb tsam ntawm xoom mus rau -5 degrees Celsius, thiab cov dej khov nab kuab zoo yog tsim nyob rau hauv cov hlwb thiab cov cell sib txawv ntawm qhov tib lub sij hawm, tsis rhuav tshem cov phab ntsa ntawm tes. Tom qab thawing, cov zaub muaj qhov txo qis thiab tswj cov xim qub, aroma, saj, duab thiab cov as-ham. Tom qab ceev ceev ntawm cov zaub, lawv cov kua txiv tsis tsuas yog muaj dej ntau (feem ntau 65% ​​rau 97%), tab sis kuj soluble as-ham xws li inorganic ntsev, organic acids, qab zib, thiab gelatin.
Thaum cov zaub maj mam khov, cov kua cell yog lub cev qhuav dej, thiab cov dej tsim cov dej khov loj loj, uas ua rau cov phab ntsa ntawm tes ua puas tsuaj loj; Tom qab thawing, cov kua txiv hmab txiv ntoo thiab cov as-ham poob rau hauv qhov ntau, cov nqaij ua spongy, lub brittleness tsis muaj zog, thiab ob qho tib si kom muaj nuj nqis thiab zoo heev poob.